@mark Yes, a very good presentation on audio recording science. I have an additional recommendation when recording voices for FM stereo radio. Be...

@artisan-radio Good going with your changes. I enjoy checking out your SDR from time to time.

I asked ChatGPT what treatments could be added to the ground to improve AM radio signal propagation. The reply... >To improve AM radio si...

Back when I operated a carrier current system there was a definite increase in range when the ground moisture was high. Dry ground reduced the range. ...

Maybe there is a way of building a frequency shifting circuit to come up with other frequencies (???)

@mark Very well reasoned comments about the niche factor and high cost of producing part 15 equipment. I believe even if we have limited income, it...

+@richardpowers Ha, Ha, Ha! I can't stop laughing!

@richardpowers - Richard Powers said "Something doesn't sound right Carl. Not sure what it is." My guess would be that the thing that "doesn't sou...

@rugster Yes, there is a differentiation in the Rules between 'home-built' and 'kits'. Look at 15.23 about 'Home Built'... "Equipment authorization n...

@rugster Oh wow! Your building skills (Rugster) are top drawer! What a fine looking piece of equipment! Your wish list for better field strength al...

@richardpowers Are you sure Neil AKA radio8Z died? I hadn't previously heard that. What a loss that would be, he provided much electronic expertise t...

@rugster Maybe I can do the R7 measurement. I will be rigging an AMT3000 to operate at 1500kHz to aim for vintage radio listeners who may or may not ...

@richardpowers How?