>The only possible issue I can think of is that in SSB mode, the frequency >display is the carrier frequency.
Well ... I would caution folks to be careful, I can think of a few other Part 97 problems when generating CW (in a CW sub-band) feeding keyed audio into an SSB transmitter. A "pure" audio sine wave into a zero-distortion, zero noise SSB Tx chain will indeed generate a single frequency signal if the carrier is suppressed so to non-existence. Unfortunately, carriers are not totally suppressed, Tx SSB generation chains are not distortionless and noiseless, audio oscillators (and sound cards) do not always produce exact sine waves, often there is low level hum in all the coupling circuitry, and, unless you start and stop the sine wave exactly at a zero crossing, you will generate some strange stuff that might not qualify as 0.1A1 emissions (or whatever it is called today - I guess I show my age). My laptop's soundcard with MixW and the RigBlaster seems to generate acceptable RTTY despite all of this because there are sidebands around the two tones as a result of the FSK. All of the undesired products are in there too, but it seems to pass the "Part 97 test" for RTTY. QUESTION: At 600 Hz (the default K2 sidetone?), the period of one cycle is 1.667 ms. How many cycles does it take for the normal human ear (that would not include either of mine! to distinguish a dot from a dash? I think the second ticks on WWV are 5 cycles of a 1KHz signal in length? Fred K6DGW Auburn CA CM98lw Ron D'Eau Claire wrote: > > Andrew, NV1B, wrote: > This sounds interesting. I've never heard much about it. Are high speed CW > ops using this in lieu of "the real thing" to get around rigs' limitations? > Since it's on SSB, I assume it's not legal down in the conventional CW > portion of the band. It sounds like it could be an easy way for QRQ CW to > operate from any rig in the 70 to 100 range, or so. > > ------------------ > <conservebandwidth> deleted </conservebandwidth> _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
