HFU HF Underground

Technical Topics => Part 15 AM and FM Station Operation => Topic started by: ThaDood on October 14, 2025, 1619 UTC

Title: Information and modifications for the AMT3000 and AMT5000, SSTRAN TX's!
Post by: ThaDood on October 14, 2025, 1619 UTC
https://internetwork.com/radio/sstran.htm  I don't have an SSTRAN AM Part 15 transmitter, yet, but for those of you that do, here's a link, that was FWR'ed to me, of a lot of great INFO here. And, bonus INFO on AM modulation and testing as well.
Title: Re: Information and modifications for the AMT3000 and AMT5000, SSTRAN TX's!
Post by: tybee on October 14, 2025, 2322 UTC
There's an SSStran AMT3000 on eBay for $399 OBO https://www.ebay.com/itm/389044025538

I'd probably snag it but I already have one and 2 Rangemasters to boot. I don't need another.
Title: Re: Information and modifications for the AMT3000 and AMT5000, SSTRAN TX's!
Post by: Dave Richards on October 15, 2025, 0446 UTC
That AMT3000 and AMT5000 page was written by broadcast engineer Clark Burgard N1BCG and, as you say ThaDood, is full of great information. I think that the majority of folk who own SSTRAN transmitters bought them to broadcast to radios around the house, and are not inclined to go to a lot of time and effort to maximize the effectiveness of their installations. If it helps just one or two people though, it's worth it.
Title: Re: Information and modifications for the AMT3000 and AMT5000, SSTRAN TX's!
Post by: tybee on October 16, 2025, 1045 UTC
.. I think that the majority of folk who own SSTRAN transmitters bought them to broadcast to radios around the house, and are not inclined to go to a lot of time and effort to maximize the effectiveness of their installations. ...

I noticed the one on eBay is set for broadcast on 700, at first I thought that odd (I didn't even realize the AMT3000 could transmit that low of a frequency), but as you point out; antique radio collectors primary concern is not range.. so maybe that explains why such a low frequency was chosen by the previous owner of the xmtr on eBay. Maybe that was the actual intention, to limit the range and keep it in the room.