On 6/25/2025 9:34 AM, Fred Jensen wrote:
Very interesting discussion. I'm not a SSB op but I do listen some and occasionally chat with friends. On my P3 with a fairly narrow span, I notice that a lot of signals [like most] seem to have most of their power concentrated close to the suppressed carrier frequency.
Yes, and that power close to the suppressed carrier is all wasted low-frequency transmitter power. About 3 dB!
From the
discussion here, I get the impression that the microphone is the primary driver of the transmit audio spectrum.
Yes, and with some mics, how close it is to our mouth. Directional mics, called a "cardioid" because of the shape of their pattern, emphasize bass when very close to the source. Virtually mics for live musical performance have this characteristic.
I use a K3 with a Yamaha CM500 and have the TX EQ set to K9YC specs and my spectrum is fairly flat, maybe a little weakish in the lows.
Yep. 73, Jim K9YC ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
