AMT3000 and AMT5000 AM Radio
Broadcast Transmitter Kits
Setting the Quality
Standard for High Quality, Low Power, FCC Part 15 Transmitters
What our customers are saying...
Actual unedited comments received from some of our many happy
customers (most recent first).
I assembled the AMT3000 kit
today and I have to thank you for creating such a wonderful device.† As a novice at electronics assembly I was
counting on making a mess of it but your instructions are so clear that I
put the kit together with no serious problems and it worked perfectly when
I plugged it in the first time.
The packaging, labeling,
instructions and, of course, the AMT3000 itself are all top-notch.†
Brooklyn, New York
I just have to let you know how pleased
I am with my AMT3000-9KSM low power AM transmitter kit. As a complete
electronics novice and someone who has never soldered in earnest before it
was with some trepidation that I started assembling my kit. However the
excellent instruction manual with detailed, clear instructions were so easy
to follow that within the space of one day the kit was complete. While
waiting for my iPod to charge (bad planning) I set the switches and was
encouraged to hear a response from my radio as I set the desired frequency
and† within minutes my music was
playing loud and clear. It is true testament to the excellent design of the
kit and clear documentation that someone such as I could build it without a
hitch. The kit was also delivered very quickly to the UK and was very well
I keep meaning to sit down and
write you an email.
I purchased my SSTran AMT3000 in December and put it together over the
I just wanted to tell you what a
great product it is and how nice it sounds. It was super easy to put
together and was a great practice of my PC board soldering skills.
Received my AMT3000 about a
month ago and finally got around to building it over 2 days at Christmas.
Took about 4 or 5 hours total I figure while trying to watch Christmas
shows! lol. It reminded me of my youth in the
1960's when I was building Heathkit radios and
computers. I remember designing and etching circuit boards as a kit. Its now
been well over 30 years since I was building electric devices! Alas, being
older the most difficult part of the build was trying to reading colour codes on resistors and the extremely small print
on the capacitors. I think you need to add a magnifiying
glass to the 'tools required' list! :-)
Was pretty careful, although I
had to unsolder a few times due to a few mistakesÖ I remember those
challenges! Had no issues when complete though, it worked right away. I
wired up the audio to an old iTouch I have, downloaded
a bunch old time music and old time radio and now we are thrilled to be
listening to the 1940's and 1950's on our vintage Zenith tube radio we just
had restored. Sounds great!
Thanks again for not only an
excellent product, but for bringing back the days of kit builds. Highly
recommend the AMT3000 to anyone!
Cheers from the north!
Ottawa, Ontario Canada
Just wanted to take a minute and
tell you that your AMT3000 kit is outstanding!
I got the board finished today, did
the final setup and it came up immediately with no problems what-so-ever.
Its online right now
broadcasting to my Dad's old 1936 vintage floor model AM radio that I just
re-capped a couple of weeks ago and it sounds great.†
Congratulations on designing and
manufacturing an excellent product.†
I have built a number of Knight
Kits, Heathkits and Dynakits
in years past and your kit has exceeded them all.†
The product packaging, excellent
labeling of parts, clarity of parts identification, board layout, well
thought out and written step by step instructions, ease of assemble,
simplicity of adjustment and manual content is superb.
Thanks for all the expertise,
hard work and obvious attention to detail that you put into your products.
Hi , I recently purchased a SStran
3000 transmitter and want to say how great it works , I took my time
assembling it over a space of seven days , I checked and doubled checked my
work and also checked the boxes in the manual . The diagram of the whole
chassis layout was especially helpful as I would use colored pencils to
fill resistors , capacitors ,etc. I also used my volt ohm meter to double
check resistors as some of the color bands weren't that distinct ,
amazingly after I was done I fired it up and it works great . I have been
able to broadcast all over the house and also my truck radio while parked
in my driveway. I mounted the assembly in the case and it really looks like
a quality made product . I will tell all my friends that belong to the
Indiana Historical Radio Society about the device as we can play our old
radio shows thru our old radios now .
your AMT3000 kit last month and assembled it last weekend and put it Ďon
lineí in my house. I absolutely love this transmitter and will recommend it
to friends in my antique radio club! I have over 20 working tube type AM
radios in my house and itís lots of fun to transmit a program to them and
be able to compare their sound quality side by side with the programming material
of my choice.
Thanks for such
a wonderful device. Iíd been wanting something like this for years and had
thought about designing one, but just never seemed to be able to get around
to it. Keep up the great work!
Colorado Springs, CO
completed the AMT 5000 and it performed perfectly first time just like the
AMT 3000 that I built last month!
remember the last time I emailed someone about their product that I have
purchased. In your case, I just wanted to let you know how impressed I am
with your kits. The quality of the circuit board, components and
documentation is incredible! In some ways as I reflect back on the
experience it makes me sadÖÖ..in that we no longer have the Heathkits, Knight, etc. in this country that provide
the variety of high quality electronic kits with great explanations of how
they work. I sure enjoyed building their stuff when I was young.
I hope you come
up with something new in the future.
today arrived the ATM3000 Kit in Germany. Many Thanks!
4 hours later I enjoy this perfect working item.
Now I am my own Programm -Director for my 20th to
Now I try the 5000 Kit.
Best regards !
We wanted to write
a review, but it looks like all the words and sentiments have been used by
prior customers. Ours would just be rhetoric.
not a strong enough of a description.
ecstatic about the assembled unit? Absolutely. Of course, it is not because
of what we did; assembly was child's play, thanks to your design and very
well written/informative Instruction Manual.
The years of
research, development, tedious testing, and coming up with the finished
model at almost a give-away price is most certainly shown, and very
appreciated.† We can't thank you
enough, sir. You fill a niche that is virtually non-existent. It makes you
I want to tell
you how much like my SSTRAN AMT3000 Low Power AM Broadcast Radio
Transmitter. Its design, quality, and performance are superb.
the intelligent arrangement of the components on the board and the graphics
on the board itself which not only allow a neat and compact unit but aid
the assembly and soldering process. The assembly instructions are
intelligently written and very clear, exceptionally so in a world in which
the majority of technical manuals seem to have gone through three
translations by people who were not even proficient in their own language much
less English and had only the most rudimentary knowledge of the product
they were attempting to describe.
of the assembled AMT3000 could not be better. It truly surprised me, far
exceeding my expectations. The sound quality is crystal clear. There is no
background noise or interference. The received signal on my old AM radios
sounds like good quality FM.
The range of
this small compact unit is really impressive. I am using only the indoor wire
antenna, six feet or so of which could be attached vertically behind a
bookshelf, and I have not yet connected the dedicated ground wire. But with
this very basic antenna, and the transmitter tuned to an open and very
clear frequency mid-way across the band, I can not only easily and
clearly receive the signal in every room in my house, I can receive it on
my car radio several houses away!
I am a
collector and restorer to "as new" condition of tube-type,
battery powered, multi-band portable radios from the 1940's and 1950's...Halicrafters World Wides, RCA
Strato-Worlds, Stromberg Carlson AWP8's, and
Zenith Trans-Oceanics. I use my AMT3000 in
conjunction with a CD player to play recordings of period radio programs
through my restored portables. It is so much fun to have a friend turn on
the Stomberg Carlson AWP8 or the RCA Strato-World and suddenly hear The Bickersons
or an episode of Amos and Andy.
This is a very
good product. I am impressed.
It took me 5
hours to assemble the transmitter and it is my first DIY
instructions are very simple and easy to follow. I can even
transmission via the lower Short Wave frequency and the
just as good as FM. Nothing beats listening to oldies
via a vintage
tube radio. It just brings out the nostalgia.
My unit is
transmitting 24 hours a day.
THANK YOU for
an excellent product that is very reasonably priced.
I purchased the kits and finished within two days,after a few alignment mention in coming manual,the result I found with my Fisher 100R and
50R,Zenith Z3000-1 and Z7000-1 was one word " EXCELLENT",THE
ALMOST SAME SOUND QUALITY COMPARE TO MY FM TRANSMITTER,thank
you for such good product !!!!!!!!!!
just wanted to drop a line saying how happy i am with your 3000 transmitter. it took me 6 hrs to
assemble and worked excellent. manual was very easy and straight forward. i wish you made an fm transmitter. :)
Hi, I just wanted you to know the SStran
I ordered on Feb 25th was here on March 1st and it took me 3 evenings to
put together, about 9 hours total. It sounds clear as a bell on my old tube
radios. I am using the wire antenna supplied and can hear it all through my
2 story house and even my garage which is 50 feet from my house loud and
clear. I did a lot of research online to look at different AM transmitters
and their reviews, SStran 3000 seemed to be the
right one for me. After building it and using it for 3 weeks 24/7 I can say
I know I made the right choice. It sounds as good or better than the radio
stations that I get around here. I listen to online radio from my computer,
and CD player also, its great to hear my old tube radios play the way they
were made to play, I think they have a sound that cant be beat. Thanks for
such an outstanding product that performs as advertised, as there is a lot
of junk out now days that doesnít even work when you get it, much less than
the advertised performance. Thanks.
I would just
like to say how delighted I am with the AMT3000 (9kHz channel spacing) low
power Transmitter. The Audio quality is even better than the 'professional'
Broadcasters. I am currently listening to 'Al Bowlly'
singing with 'Ray Noble & his Orchestra' on a (circa.1934) 'His
Master's Voice' Radio set !! (Which is probably what audiences would have
listened too, when the Radio was new). The front controls, allow
a wide range of input levels and compression settings that are
quite impressive. The R.F. stability is excellent. The P.C.B. is of superb
quality as are the components and construction manual. My unit looks and
performs beautifully. I highly recommend this unit !! The
unit was also well packed.
a quick note to say how delighted I am with my AMT3000-9KSM low power AM
The quality of all the parts is excellent, the packaging superb and the
instructions perfectly clear and detailed. The design of this kit is a real
credit to your company.
Without rushing and following the clear and well explained step by step
instructions, I assembled my kit over the course of two evenings without
encountering any problems at all. When all the assembly was completed and
double checked, as recommended in the comprehensive instruction manual, the
time came to power up for the first time. This is always an anxious moment
in any electronic project! Having set the required frequency, power was
applied to the AMT3000 and I am delighted to report that it worked
perfectly first time. (Of course!)
The kit was then housed in its excellent and very professional looking case
ready for action.
I can report that when transmitting radio stations from a digital set top
box, or CD's of vintage radio programmes, the
AMT3000 sounds just like a professional AM radio station. The sound quality
really is excellent - just as other users have reported.
The range of controls very useful indeed. I found that no compression at
all needs to be applied when re-transmitting live or recorded radio programmes because the radio stations have already
applied sufficiently large amounts of audio compression at their studio or
transmitter; In fact adding more compression with the AMT3000's controls
can actually reduce quality in such cases. The compression control of the
AMT3000 is much more useful when transmitting less compressed material such
as music from PC, LP or tape where large variations in amplitude (volume)
are usefully evened out.
This really is a remarkably good product and I highly recommend without any
hesitation or reservation to everyone.
Thank you for such a good design - a truly magnificent product in all
I thought I will send you another testimonial to add to your satisfied
customers list but from the UK.
kit is amazing, the instructions to build it couldn't be simpler, even
someone who has basic knowledge of how a battery works could easily get
this kit made. I followed the instructions to the letter and my BC312 radio
receiver picked up my wartime radio shows and archive material first time
with out fiddling, playing around for hours and messing about. Clear as a
bell but even better, the sound that came out, made the hairs on the back
of my neck stand up with that air of nostalgia as how it would
have sounded all those years ago. For users in the UK you need to get an 18
vac 500mA adaptor from RS or you can use 2 12
volt batteries if using away from a mains power source, it works fine. You
also need a RCA jack plug adaptor from the transmitter that fits to your
MP3 or CD player, these are available at Maplins.
purchased two transmitter kits, one from a different manufacturer, the
SSTRAN AMT3000. I can honestly say that hands-down, there is no comparison
between the two
Being an amateur at electronics, it was a great help to refer to such a
manual. Even the little details of the way the components were
labeled in their respective wrappings thrilled me. The kit even broke down
the soldering process into
of components, which surely made the entire process much more efficient.
Well, when I found
had been created in the board (and just the right size) for meter
leads to be inserted and
freeing up my hands for tuning adjustments, that put me over the top! It
became clear to me
a lot of thought had been put into the design.
kit was assembled in 4 hours, and that was an accomplishment for me. When
it came time
test it, I turned it on, and it worked flawlessly. I really like the fact
that I can change the modulation,
and volume. Now, I have two kits that I compare side by side. They both
cost the same,
only one has won my respect, and that is the SSTRAN AMT3000. I would most
this kit again.
finished assembling my AMT3000 transmitter. From opening the box to going
on the air took about six hours and it worked just as promisedóno problems.
and Operating Instructions are excellent.
I just finished
building my AMT3000-SM. I have a limited amount of experience
soldering, but the kit went together without a hitch! Your assembly instructions
were clear, concise and unambiguous. Initially I was dreading
assembling the unit, but my fears were unfounded. I completed the kit
in three sessions, about 1.5 hours each evening. I read each
instruction step carefully, and used the check boxes upon completion of
each step. As the assembly progressed, my confidence rose. By
the time I had completed the kit, I just knew that it would work when
plugged in......and it did, first time! My old tube radios sound
great playing old time radio shows streamed from the Internet.
recommend this kit to anyone, of virtually any skill level. Read the
instructions, take your time and use the check boxes as each step is
completed. If I can do it, anyone can!
SSTRAN for a GREAT product!
I finished my SSTRAN yesterday
afternoon and listened to it all afternoon and evening Ė WOW what a
difference in that and the old Vectronics
transmitter I was using. I canít believe the difference in sound
quality, it sounds much better than any of the OTA broadcast stations in
the area and is light years ahead of the old Vectronics.
The range is also much better Ė the Vectronics
was limited to pretty much one room while I can pick up my SSTRAN all over
the house. I really enjoyed building the kit and liked the challenge
of soldering the surface mount IC Ė thatís the first time Iíve ever done
anything with a surface mount component.
I have a
suggestion Ė I used one of those Sears ďHandi-cutĒ
cutter-pliers to separate the 6 2-pin headers instead of a utility knife
and it really made the job easy, no pieces flying anywhere and no damage at
all to the headers. Very easy to make nice clean straight perpendicular
cuts; you do have to use some common sense safety and keep your fingers out
of the way:
pleased, this is one of those rare products that has far exceeded my
expectations and is already making me very glad I bought it. Thanks
I just want to let
you know that I'm very satisfied with the AMT3000 kit I purchased recently.
A high quality kit, and with the assembly and operating
instruction detailed as they are, it makes it very easy to
assemble the kit in a short time. It took me about 5 hours from
unpacking the box to listen to music through the transmitter. The
quality of the transmitter is excellent.
A very happy
kit today and it works perfect.
Hooked to my
computer to broadcast to an old tube radio.
a Heathkit oscilloscope, a Heathkit
TV, & a Knight SW.
Your speed of
delivery, packaging and instructions are second to none.
It was a lot of
fun doing a kit again. Nothing like the smell of rosin core solder.
February, I built my first AM 3000. Finished in a few hours, up and
running the next day and is still running like a charm! It has been
powered up 24/7 since that day, withstood many wind storms, tornado warnings,
heavy rains, snow, ice, etc and still keeps plugging away. I wish
everything I built was that reliable. Audio quality is still supurb and nothing, has changed quality wise.
I have no clue
if others have found the signal here in the small town I live in but, if
not, they are missing something fun to listen to. I was up on the
roof today, opened up the box just to take a look, it all still looks as
new, no weather problems etc. Anyway, just wanted to say thank you
again for the excellent transmitter you have designed, it is second to
Just a quick
note to commend you on developing such a brilliant professional product.
Kit arrived quick and safely, easy to assemble and set up. I have not heard
such excellent quality AM broadcasts on my old sets for years!
St Albans. UK
THANK YOU!†† THANK YOU!†† THANK YOU!†† THANK YOU!†† THANK YOU!
after dinner and the kit is done.†
Third night and itís tuned in and running.
you advertised!!!† Clear signal and
PLEASE DO AN FM
VERSION AND GROW YOUR LINE!!!!
Just wanted to
thank you for the great AMT3000 kit. I assembled it in my spare time over the
course of 3 evenings. My jaw almost dropped to the floor when I heard my
old 1924 Victoreen Superhet
receiver go quite when I plugged the finished transmitter in. I was
even more astonished when I turned up the gain and compression and heard
beautiful hi-fedelity AM audio pouring through
the ancient speaker. Far better range than any of the local AM
stations. I marvel that the transmitter worked first try! (Nothing
has ever worked first time before!) The documentation was really
great, and the assembly was a terribly rewarding
experience. Collectively, I spent about 4 hours.
I plan to purcase another for a friend for Christmas. He
will be as delighted as was I!
Just wanted to
pass along a note of thanks for offering a quality product at a reasonable
price. I ordered your AMT3000 a few weeks ago and just found the time to
assemble it this weekend. Being an electronic technician for 27 years, I
appreciate the quality of this well thought out kit. It not only lives up
to your claims; it surpasses my expectations with audio quality unrivaled
in a kit with such a modest price. The assembly instructions had no
surprises and were fairly well presented. From the time I opened the box,
until I was "on the air", was less than 4
I received the
AMT3000 and assembled it in about 3 hours. I was very pleased with the
quality of the kit in every way. The audio quality is fantastic, the
instructions are clear and the price is reasonable.
I have played
around designing and building my own homebrew transmitters, and yours is by
I use it to transmit Old time radio shows throughout
my house.....It's great.
and working fine! I now have lots of good programmes
to listen to on my old sets.
I ran the
Electronics Prototype Dept at Lucas aerospace in Birmingham UK (now
Goodrich) before retiring after 38 years and recognise
a good well thought out product when I see one.
I just wanted
to let you know that I built my AMT3000 last week (a
present from my family - chosen by me :).†
What a joy to
build!† The instructions
are excellent and the kit very well organized.
Maybe the most
fun I have ever had building a kit and I am very
Phil, the SSTRAN AMT 3000 is one great little
transmitter. It has superb sound and is constructed of quality material.
With the wire antenna and grounded to the telephone ground I'm getting
about 500' crystal clear signal and about 500' more with distant signal. At
1000' there are hot spots and like such at 1500'. I would highly reccomend this to anybody who wants a great sounding
transmitter. And best of all, it's affordable and worth every penny. I
would even pay twice the amount. In fact it sounds as good as or better
than the commercial stations.
Thanks Phil for this magnificent transmitter.
Sincerly, Travis Allred
Great little AM transmitter. The compression,
modulation and overall audio quality is far better than many full
size broadcast units and Optomod processors I've
worked with at commercial stations.
As you mention, a lot of the old recordings aren't
very good quality. That's generally what I expect when I buy OTR. I've fed
them into my computer and, as time permits, I'll bring them up in Cool Edit
Pro and see if they can be improved any. You can do a lot with that software.
Once again, thanks for a quality product and such fast
Itís not often these days that you buy something that
exceeds your expectations but I just finished building the AMT3000 kit and it
did just that! Iíd like to thank you for a well-engineered product that
worked perfectly as soon as I powered it up.
This was the first significant electronics project I
have ever tackled and I was initially concerned about working on a PC
board. Your instructions were excellent and had exactly the information I
needed at each step. I had no problems whatsoever with assembly or setup.
The sound quality is excellent and the audio
adjustments have a wide range without being finicky. We live in an area with
limited radio reception and Iím finally able to listen to my old tube
radios with a strong clean signal. Iím using the Internet as a source and
itís wonderful to have so much choice in the programs we can listen to on
our old (and new) radios.
Completed assembly of my AMT3000. Powered up and WOW.
I've built several kits in the past but without a doubt this one has the
most detailed easy to follow instructions of all. And for the sound, I
could not believe it. Sounds so good I am retiring an older version of
another brand that I thought was the best. Tuning was a snap.
I highly recommend Phil and SSTran, he took time
to answer all of my questions before I ordered and everything worked
exactly as he said it would. I would not hesitate to order from him again.
Deserves an A+ rating in every category, especially CUSTOMER SERVICE.
Eight or ten old radios, including my faithful Philco 41-280 console and post-war rolltop,
a Zenith or two, a dashboard Crosley, an eye-tube
Truetone and a Stromberg Carlson tabletop are
keeping this chill out of the air this evening at the Homestead.
When you are an
electronically under-enhanced Baby Boomer Vietnam Vet Newspaper Editor
English major Machine Tool Tech Support Engineer born in 1946 and you can
fire up a soldering iron and Follow Directions and make a box of itty bitty
little doodads do what they are supposed to do it gives me a Warm Fuzzy
feeling. I hope you get the same Warm Fuzzy that you have a completely
satisfied customer who can recommend your transmitter without hesitation.
Attaboy to you and
attempts at trying to obtain an AM transmitter, first the LIL7, then the Graymark 505, Then the Knight version, then Ocean
Electronics $10.95 kit, all of which are, and were, just plain hype and
junk, I broke down and bought a SSTRAN AMT3000, For about $100.00 with
shipping. It took 3 days to get here, then I spent 4 hours two nights in a
row assembling the kit. Very straight forward, the board is a little
cramped, and unless you have a fine tipped soldering iron, and good
soldering skills you may have trouble. I opted to wear magnifying glasses
to wire it up. Then inspected carefully with a jeweler glass.
I turned it on and tuned it according to instructions, which were very
straight forward. I found no mistakes or confusing parts of the manual.
It works exceptionally well, has excellent control factors and selection
options. The controls are Gain, Modulation, and compression. These are
located on the front panel. So between those controls and the controls of
the computers MP3 player and my radio, it is like having equalizer/mixer
control over the quality of the broadcast.
SSTRAN has got it
100% right on the money. Like Ron Popeill says,
"SET IT AND FORGET IT." You leave the unit on all the time, and
unless you move the antenna you do not have to adjust the unit ever again.
Unless of course you are a tweek freak.
The price, ease
of assembly, quality of the product, and the quality of the broadcast
signal, I WOULD NOT WASTE MY TIME EVEN CONSIDERING ANY OTHER AM
YOU CAN TAKE THAT TO THE BANK...
Antique Radio Forum 11-10-2005)
I have just
completed my transmitter kit. Assembly took me about four
and a half hours
and the unit worked flawlessly at first try. Signal /
quality and frequency stability are outstanding, equal to a
electronics engineer, I can tell that a lot of effort,
knowledge, and experience
went into this design. Also, I'm quite
you guys are able to do it for this price.
To sum it up,
this is by far the best AM transmitter I've ever had and
Thank you so
I just wish to
thank you from 'down-under' for an excellent product.
designed, engineered, and documented.
instructions are by far the best I have ever seen for a kit.
It was a
pleasure to assemble the kit and it worked first up.
Thank you again.
I have learned
to do a bit of research before buying anything. Everything I could find
about AM transmitters said your unit was the best. It is not the most expensive,
or least expensive. It is a great unit at a reasonable price. I had a good
experience with your company from the start. The order confirmation via
e-mail and shipping confirmation from the Post Office surprised me. The kit
reminded me of a Heathkit project. I believe your
kit is of a higher quality than Heathkit.
worked fine from the start. The audio IC†
handles volume level changes of the mp3 files. I enjoy listening to
the old radio shows played as they were meant to be heard, on AM radio.
Thanks for a
Received my AM Broadcast Kit. 2 Hours Plug and Play.
Can't say enough Good about your Product. PC Board worth the
Been a Tech for 35 years so I appreciate the Quality.
I just purchased and constructed one of your AMT3000-SM
kits. What a great product! The design of the kit made
putting it all together a very enjoyable experience. Your
documentation is excellent and the design of the transmitter is first rate.
I'm extremely pleased with the performance of this little box. I've
been listening to it on my Carver TX-11a in wideband AM mode and my Sony
SRF-A100. The audio is very clean.
Thanks again and keep up the great work. If you ever offer
an FM product, I'll buy one!
The AMT3000 Transmitter is quite the little
I started with the wire because I had the coil on order from Carl who makes
the vertical antenna for the AMT3000. I had built the antenna from the easy
to use diagram and specs provided on the sstran.com site and requested him
to make the coil, because I wanted it done right.
With everything put together and tuned properly the transmitter gets out
great. I think I have a good range of over a mile, maybe farther in hot
spots. The sound is incredible and sound just as good if not better than
the other commercial stations in my area.
Just make sure you have the antenna clear of any obstacles and have it well
grounded and possibly elevated if you have buildings or houses close by and
you should be more than happy with it.
I can only imagine how well this puppy would get out if I had it 50 feet
Thanks Phil and Carl for being so helpful and patient with me.
kit about two months ago, and it worked the first time! It really really sounds good. Tell the engineer that designed the
kit that he did an amazing job. Honest!
and fired up my AMT3000-SM xmtr. All I can say is
- WOW! I can see you take your motto "Dedicated to Quality
Engineering" very seriously; what a little gem!† With just the ground and antenna wires
lying around, I can hear the signal out to about 300+ feet before it fades
into the noise at 1700kHz.† The audio
is robust (those sidebands really ROCK!) and the quality is excellent.† Also, the unit is dead on frequency. I've
been disappointed with another AM transmitter kit, but your's
worked beautifully the first time.†
The assembly instructions are clear and all of the parts (in
addition to being included) are clearly labeled.† What an amazing value for the price, it's
worth every penny I paid.† Also, you
responded immediately to a question I had; appreciate the great customer
service.† Thanks for putting so much
care and effort into producing an excellent product. Now I'm going to get
to work on building an antenna!
I just received the AMT3000 kit and completed it last night.
I couldn't wait to put the power to it and see what it
sounded like. Man, was I surprised! From recommendations, I had
expected a nice sound, but after tweaking it a little, I was floored. A rich
mellow, drift free sound that puts the big boys to shame. No hum
whatsoever. Instructions are precise and well laid out. Old
Time Radio is now alive and kicking in my community on 1610!
I built your
transmitter kit in a couple of hours. Great kit! Very easy to build, it
worked first try and the fidelity is superb. My old Grundig
sounds spectacular playing old time radio.
Just wanted to
take a moment to tell you what a great product you have.† You shipped my kit 08JUN04 and I received
it a couple of days later.† Assembled
the kit and was ready for a "smoke test" after two easy
evenings.† Not to my surprise, it
worked flawlessly!† Setup was exactly
as described in your exceptionally well-written manual.† The transmitted signal has fabulous
audio. I listen to it on a vintage 1946 Stromberg-Carlson console (among
others) and the sound is just incredible!†
However, I do have one suggestion:†
Please design a kit of this caliber for FM stereo!† Is something like this in the
works??† I've tried many similar
products over the years and have come to
most of them are merely toys.† Thank
you for a truly superlative product!!!
I just completed
the AM transmitter and it works like a charm.† Building the kit reminded me of the days
It was a pleasure to hear Classical music on an AM radio again.
I just finished
my kit and I wanted to let you know what a terrific product it is!! I
am very impressed with the assembly manual and the organization of the
parts. Everything was there and easily identifiable. The kit
instructions were very straight forward and it went together smoothly--it
worked right away! It is so cool to be able to listen to music on my
antique radios!! In this area, the is virtually no music--only talk
radio stations. This is such a welcome change.
for a wonderful product!!
I did not
expect so high quality a design, and excellent documentation. A few hours
later and I was broadcasting.† With
only the wire whip laying about, I can get crisp clear reception on my car
radio hundreds of feet away. Wow, with a decent (still legal) antenna, this
will be quite a 100mw performer!
ham radio license holder.)
I finished my
transmitter a few hours ago and can't turn it off long enough to get it into
it's case. Happy, elated, and any other adjective that you could think
of! It's given life to otherwise worthless radios, the Stratosphere
included. It was a joy to put together thanks to such a well thought
out design, package and assembly manual. I can't say enough and I
plan to be saying plenty to every radio buff I know. This is some of the
best money I ever spent. Thanks so much!
arrived.† I plugged everything in,
my Dad's 1941
Zenith Universal (6G601D) is playing satellite
radio!† Commander McDonald would be amazed at
arrangement.† No more commercials and
according to the Universal, it sounds better than
stations, too.† (I think dish does a
pre-compressing the Sirius signal, so I turned the
beautiful product, simple, well-packaged, documented,
-- very professional.† Thank you -so-
Now all I have
to do is find a 12S265 or 12S267 and then I
I am very impressed with the audio quality that the SSTRAN kit
offers. With the built-in compressor/limiter, you can't go
wrong! I am broadcasting my Internet radio station www.ClassicHeartland.com now
at 1610 KHz with the outdoor antenna that you can build using the plans on
this site. One note, I tested the antenna on the ground in the
backyard and then with it 25 feet off the ground. The range is
phenomenal considering that this is a legally unlicensed station!
Reception is solid within a mile radius. It can get spotty after
that, but I have been able to pick it up with a clear signal in a few hot
spots as far away as 4 miles away! If you want to legally
broadcast to your local community, I highly recommend this kit AND the
outdoor antenna. Oh, and if you are as afraid to solder as I am,
spend the extra couple of bucks to get the surface-mount IC already
soldered to the board.
Granada Hills, CA
I am truly
impressed with the AMT3000.† I had
been looking for a decent AM transmitter to transmit music to my collection
of working vintage radios for a long time.†
Your little AMT3000 is just the thing! It's audio quality is as
close to a commerical AM station as one can get.
Some people who have listened to mine can't tell the difference.† A good friend of mine who was an AM radio
DJ in the mid-70s was so impressed,†
he bought one and had me to assemble for him.†† Keep up the good work.
Check out the SSTran Am
without a doubt the best mini-transmitter I've ever had (and
at least 6 of them over the years). I built a Ramsey MP3FM
the best of the FM transmitters I've had, but the SSTran
transformed the way I listen to OTR for two main reasons.
1) It is
a high fidelity unit...it sounds as good as a real am
and all the other am transmitters I had sounded considerably
than real broadcast stations (poor audio quality, whining
and hums and distortion).
contains an audio limiter/compressor which you can adjust to
taste. It allows volume leveling so the audio doesn't fade into
background or blast you when you least expect it. This alone
OTR shows sound much more enjoyable than they do listening
off the PC or on a boom box. As a person who works in the
industry I'm aware of the processing radio stations
their audio before broadcast. It makes the stations loud and
sounding and is the reason most small transmitters sound anemic
comparison. Although the SSTrans limiting is
elegantly simple, it
allows you to tailor the compression anywhere from fully off
heavily processed. A very light setting can be used to prevent any
compression artifacts and to allow a quiet background while
maintaining a fairly natural sounding, constant modulation
It works very very well.
The SSTran was a bit more complex to assemble than the
Ramsey, but I
by sorting out ALL THE PARTS in advance so I didn't
read color codes during assembly. It took me a weekend to do
I love this toy and leave it on most of the time. If I'm not
to OTR or music from my PC, I leave it on a streaming
so I can tune in whenever the mood strikes.
if you happen to have an am radio with a wide bandwidth
9such as the GE SRIII, this thing sounds just like FM...it
response to 20K which is much further than any OTR I've got.
never had souch a wonderful experience as turning
and playing my old shows through my old Zenith Trans-Oceanic
creates a reality I just don't feel listening on my PC!
was a nice review of it a few months ago in Popular
love this little gem and can't recommend it highly enough!
(From Yahoo Groups post)
you for such a great product. The sound quality is great, there's no hum whatsoever,
and the range is excellent. I've used two other AM transmitters and neither
one comes close to your kit. I appreciate the ability to set it precisely
to any AM band frequency, and the well written instructions were most
just finished mine a few moments ago. I set the dip switches according to
the charts, plugged in the mini disk, plugged in the wall wart, tuned the Philco console to the frequency and listening to Jack
Benny as I type this, and with NO HUM!! Will have time to try some big band
music and play with the settings later. Phil did an *excellent* job with
this kit, first class all the way.
Colorado Springs. Colorado
kit arrived today and I haven't had time to do anything but look itover and read the manual.
This is one of the most handsomely conceived and packaged kits I have seen.
My building experience goes back as far as a Philmore
one-tube radio kit.)
Every blunder a builder might commit seems to have been anticipated and
The packaging makes it very unlikely for the unwary constructor to confuse
similar-appearing parts. And photographs and descriptions in the manual
reduce the likelyhood further. The descriptions
of the circuits, their operation and proper adjustment should satisfy
anybody ready to tackle such a project.
Additionally, a minor and easily implemented (if necessary) revision to the
design is provided, suggesting that users will be well-supported if
difficulties are encountered.
(I don't know how you do it for the price, Phil.)
I am going to have to purchase a soldering iron suitable for mounting the
single, surface-mount chip in the kit before I begin building, but I am
looking forward to the experience.
San Francisco, California
finished the kit and it works great. The audio quality is superb, as close
as broadcast audio could be. I have built many kits over the years and the
AMT3000 has to be on of the best quality and the instructions were very
complete and accurate.
Just had to tell you how
much I like my new AMT3000 transmitter kit. It arrived about 1:00 pm and I
was "on the air" about eight hours later. I have built many
kits over the years and this one is as good as any. This transmitter works
exactly as described, especially on the distance it can cover and the
professional sound quality it puts out. It is dead on frequency with no hum or oscillations.
Thanks for engineering
such a top notch product and for pricing it low too.
- I received the transmitter and just finished building/aligning the
unit.† Like many people over on the rar+p newsgroup, I have tried many (including a couple
of my own) versions of low power am transmitters, both tube and solid
state, but had never found one that really worked satisfactorily until
now.† Kudos to you all - this one is
outstanding not only in operation, but your assembly instructions/manual
are top notch! Thanks a million.
San Jose, California
to some 50's/60's oldies right now from my PC playing through my tubed Zenith Trans-Oceanic. I've been playing around
with Part 15 am transmitters since I was a kid and this is the first time
I've ever had a home transmitter that sounded as good as regular broadcast
stations! The sound is full, strong and clear and doesn't
have any of the
background hum and whine I get with the other mini
own. My radios sound their best and the adjustable audio processing let's
me compensate for mp3 files and CD's of different volume levels. The
processing "punch" brings lots of details out of Old Time Radio
Shows I've got on mp3 that used to be lost down in the soup. I bet the
shows didn't sound as good when they originally aired!
I had fun
building the kit and think this is a great product. Plus your service and
support are without peer.
Thanks so much!
I can't say
enough about how pleased I am with this xmiter.
I have been a SW listener for many years and recently I decided that after listening
to them for so many years, I really wanted to learn more about how a
radio transmitter works. At this time HAM radio just does
not appeal to me, so I considered buying a base CB Radio and seeing what I
could learn from that. I read the article about you in Pop
Communications and I was sold. I have already learned quite a bit
through this exercise and by studying the Theory of Operation section
of your documentation and by following up with things I can find on
the internet about the ICs etc. Thank you so much for producing a truly
good product, at a good price, and standing behind it with excellent
customer support. It seems today that so many companies produce poor
quality, over priced products. It is nice to find a company such as yours. You
live up to everything that was said about you and the AMT3000 in
the Popular Communications article and more!