Dave wrote: >...the CW equivalent of PAN PAN PAN (it should be repeated three >times) is XXX XXX XXX...
Ed wrote: >Never heard of such nonsense Even those who have decades of ham Morse experience are often unfamiliar with basic commercial, maritime, or military Morse usage. Sadly, it's worth learning today only for historical reasons. The most common misunderstanding has always been the use of SOS. It must be sent as one character (...---...), never as S O S (... --- ...). When correctly sent, it has a very distinctive sound. That was the intent. Oddly, one of the USAF's 1950s-era emergency Morse keyers, used to automatically key an aircraft transmitter with SOS and aircraft ID, sent S O S rather than the correct SOS. I don't know if that was intentional, or just an error made by the engineer who designed the motorized cam wheel surfaces that determined the keying sequence. I suspect the latter. I've never liked ham-only inventions like QRRR or even KN. They have no reason for existence. Commercial or miltary Morse usage always set the standard wherever Morse communications had importance beyond hobby purposes. Mike / KK5F _______________________________________________ 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
