HFU HF Underground
Technical Topics => Part 15 AM and FM Station Operation => Topic started by: JimIO on October 10, 2020, 1937 UTC
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https://fccid.io/blog/2016/07/09/fcc-rules-home-built-transmitters-not-sale/
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I have, for the 22M 13MHz band in AM, http://boomerthedog.net/13560.html That 2mW, (Ooooooooo, what a flame thrower!), actually covers a few miles to anyone RX'ing with the decent 20M antenna set-up. It was all trashed and recycled parts, except for the 13.560MHz crystal, that was provided by Fearless Fred. (A very nice donation, indeed!) However, I'm not using that anytime soon. Why??? The 22M Beacon freaks went apeschytt on me. Even Glenn Hauser e-mailed to me that it was a bad idea for me to use this mW AM TX. So, O.F.W... However, it was a neat and fun experiment, for a while. So, what's next? An old idea, coming of new, again. A Layman's, Plug & Play, AM Carrier-Current, Medium Wave, Transmitter. And, we have several existing choice ideas to build prototypes from. Stay tuned!!!!!! (Literally.)
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I have, for the 22M 13MHz band in AM, http://boomerthedog.net/13560.html That 2mW, (Ooooooooo, what a flame thrower!), actually covers a few miles to anyone RX'ing with the decent 20M antenna set-up. It was all trashed and recycled parts, except for the 13.560MHz crystal, that was provided by Fearless Fred. (A very nice donation, indeed!) However, I'm not using that anytime soon. Why??? The 22M Beacon freaks went apeschytt on me. Even Glenn Hauser e-mailed to me that it was a bad idea for me to use this mW AM TX. So, O.F.W... However, it was a neat and fun experiment, for a while. So, what's next? An old idea, coming of new, again. A Layman's, Plug & Play, AM Carrier-Current, Medium Wave, Transmitter. And, we have several existing choice ideas to build prototypes from. Stay tuned!!!!!! (Literally.)
It's actually a fine idea. Don't worry about the autistic manchildrens, they just like to cry about everything.
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Could the Black Cat System Beacon transmitter be modulated with AM or FM? That might be an easy way to get something ready to go at the proper power level.
I like The Dood's. I wouldn't worry about those guys either, they don't own the band. Most of what I've heard at 13.56 is just a continuous noise level centered around the middle of the band, it sounds like a hash from so many transmitters.
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Could the Black Cat System Beacon transmitter be modulated with AM or FM? That might be an easy way to get something ready to go at the proper power level.
Not easily.
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I have, for the 22M 13MHz band in AM, http://boomerthedog.net/13560.html That 2mW, (Ooooooooo, what a flame thrower!), actually covers a few miles to anyone RX'ing with the decent 20M antenna set-up. It was all trashed and recycled parts, except for the 13.560MHz crystal, that was provided by Fearless Fred. (A very nice donation, indeed!) However, I'm not using that anytime soon. Why??? The 22M Beacon freaks went apeschytt on me. Even Glenn Hauser e-mailed to me that it was a bad idea for me to use this mW AM TX. So, O.F.W... However, it was a neat and fun experiment, for a while. So, what's next? An old idea, coming of new, again. A Layman's, Plug & Play, AM Carrier-Current, Medium Wave, Transmitter. And, we have several existing choice ideas to build prototypes from. Stay tuned!!!!!! (Literally.)
You get very many more miles-per-watt with a CW signal than you will with AM. Another thing to consider is the fact that an AM signal typically takes up about 3 to 6 khz of bandwidth. That being said, what the heck, give it a try. My guess is you'll need a lot more than 2mw to be heard much beyond your backyard.
Experimentation is a good thing. 8)