Dave, To add to the replies which you have received, the width of your USB signal should also include those intermodulation products which appear at frequencies less than that of the suppressed carrier frequency, i.e. in the LSB region. If you tuned your K3 to 14.225 MHz, these IMD products would fall outside of your General Class portion of the band and could create interference. To be safe I would suggest that you do not operate your K3 in USB mode below 14.228 kHz.
In Europe the top end of our 80m allocation is 3.800 MHz, and some European hams operate LSB on or very close to 3.800 MHz. This practice has caused some non-amateur users operating just above 3.800 MHz to complain about interference from amateur IMD products. Fortunately those complaints which I have heard are still at the "muttering" stage. 73, Geoff LX2AO On July 14, 2012 at 10:39 PM, David Guernsey wrote: > If I tune my K3 to 14.225 MHz will I be in the General Class portion > of the 20 meter band, or do I have to allow for the width of my USB > signal when I transmit? ______________________________________________________________ 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
