When Don wrote the paragraph quoted below, I started to think why I would want to use one of these modes. AM doesn't seem very likely except as a demo.
But ESSB might be useful to transmit a wide-band, high bit rate digital mode via a computer sound card. Those sound cards have at least 15KHz bandwidth, which would need to be reflected in the transmitter (and receiver) bandwidths. That amount of spectrum would be reasonable in bands where FM is commonly used. I find the regulations for 160M-10M confusing as to the maximum bit rate* and bandwidth permitted, but on 6 meters, the authorized bandwidth is up to 20 kHz with a maximum baud rate of 19.2K baud/second. Cheers - Bill, AE6JV * The regulations speak in terms of maximum baud rate, but you can send more than one bit/baud, if you have enough bandwidth. On 9/22/12 at 18:19, [email protected] (Don Wilhelm) wrote: >I too would like to see the FM filter also usable for AM and >ESSB. I really never anticipate transmitting in AM or ESSB, >there is always the possibility I would like to use it for some >demo sessions showing off the K3 capabilities. The >cost/benefit ratio is too high for that kind of occasional application. --------------------------------------------------------------------------- Bill Frantz |"Web security is like medicine - trying to do good for 408-356-8506 |an evolved body of kludges" - Mark Miller www.pwpconsult.com | ______________________________________________________________ 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
