About the 60 meter 'band', remember that it is NOT an "Amateur Band". We have *no* channelized Amateur Bands (at least in the USA). The ARRL was unable to shoehorn in an Amateur Band at 60 meters in spite of a pretty good case for having one there in order to ensure more reliable emergency net communications - especially in hurricane country. Since they couldn't get an Amateur Band assigned to us, they secured us permission to *share* a series of channels assigned to commercial services on a secondary, non-interference basis. As you pointed out, commercial SSB is invariably USB. That makes sense in a channelized environment because you can put the channels closer together and there's no need to switch the BFO to swap sidebands.
That sounds right about the SSB Jr. I barely remember it and never had one. I do recall some schemes that created SSB at 455 kHz (455 kc/s back then) and that led to a problem with image suppression if it was heterodyned directly to frequencies as high as 14 MHz. It was easy to transmit a substantial amount of signal at the "image" frequency only 900 kc/s away from the carrier. So a lot of rigs were built for the lower frequencies and used a transmit mixer for the higher bands. Ron AC7AC -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Sandy W5TVW Sent: Thursday, June 17, 2004 6:55 PM To: [EMAIL PROTECTED]; [EMAIL PROTECTED] Cc: [email protected] Subject: Re: [Elecraft] Re: K1 on USB CW It goes back to the original "SSB Jr." which was ultimately the basis for the FIRST real commercially built SSB transmitter, the Central Electronics 10A...Didn't they state that on the 60 meter channels? (USB only?) ...I supposed ARRL has too many irons in the fire now with the "rehashing" of the amateur classes/privileges and BPL to worry about 60 meter mode expansion? 73, Sandy W5TVW ----- Original Message ----- F _______________________________________________ Elecraft mailing list Post to: [email protected] http://mailman.qth.net/mailman/listinfo/elecraft You must subscribe to post. Subscriber Info (Addr. Change, Unsub etc): http://mailman.qth.net/subscribers.htm Elecraft page: http://www.elecraft.com
