Total posts : 45366
Hi Chad, and welcome to the board.
You should check the links provided by SCWIS. Since I own and have used both the Ramsey AM-25 and the SSTRAN, I thought you might be interested in my impressions.
My observation is that there is a big difference in audio quality between the two. The Ramsey distorts above about 70% modulation whereas the SSTRAN is clean up to 100%. The Ramsey running below about 70% sounds OK but I prefer the SSTRAN. The Ramsey has a single audio input which requires that you mix the stereo source to mono and the SSTRAN has dual audio inputs and mixes them internally. The SSTRAN has a built in compressor/limiter and provides front panel controls for adjustment, though I have found that once I set them to my satisfaction I need not touch them again.
Both kits have excellent assembly instructions.
The only down side to the SSTRAN for me is that the antenna is a bit tricky to tune, but it works fine once set up according to the instructions. If not tuned properly, the audio and carrier can distort.
The Ramsey does not require tuning beyond installing some parts according to the frequency range of expected operation. This unit, according to my tests, drives low impedance antennas (20 to 100 ohms such as is given by a base coil loaded antenna) well.
I use a base coil loaded/resonant linked antenna mounted on the ceiling of my basement, so any range claims I would make would not compare to an outdoor vertical with ground radials. All I can offer is that the range was pretty much the same with both transmitters using this antenna.
I now operate with the SSTRAN and my Ramsey is retired.