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Great points Dave. I haven't listened to them in quite a while. Cheers Doc W2MFT --- On Tue, 2/12/13, EI0DB <ei...@eircom.net> wrote: From: EI0DB <ei...@eircom.net> Subject: Re: [Spooks] Morse Code Broadcast To: spooks@mailman.qth.net Date: Tuesday, February 12, 2013, 4:45 PM Visit http://mailman.qth.net/mailman/listinfo/spooks to unsubscribe from this list Hi All, First the crud (QRM) out of a cellphone is nothing like a real CW (morse) signal. I offer as a suggestion that your receiver tuned to 1630 was responding to a signal round 2540 kcs what id known as an "image" the image frequency of your set. Since a superhet (Superheterodyne) receiver works by converting the incoming signal to the IF (455 or 465 Kc/s) which reduces the number of stages to tune and improves the selectivity, one of the drawbacks is that there are two frequencies that can be converted to the IF the wanted and the image. Sounds like the station was sending it's ID tape, [so the remote station could net onto him and ] so some other outfit could not steal his frequency. And when there is traffic to send, the operator switches the TX from ID tape to a a message tape, then switches back to the ID tape, when finished. Sounds something like U.S Navy Fleet or NY HF marine radio , message broadcast system (may be?) Key here is messages are just broadcast maybe at a schedule time) as they are issued and acknowledgment is on another channel. Flaw in that reasoning is Navy is just about all RATT or satellite based now. But Haifa Naval Radio 4XZ (spooks id M22) is still behaving exactly like a pre-WMARC 1979 Coast Radio Station. Still sending out their ID tape "VVV = = 4XZ 4XZ repeat ....." , and their encrypted traffic on schedule, as well as lists of call signs for which traffic is held, and acknowledgments received. So much so you would think they are in a time-warp. Could I suggest you compare what you are hearing on your radio with with 4XZ which is very nice machine sent morse around 19 wpm, try 6606Kcs, 6378Kcs, 5500Kcs (a bit weak here) , or 4330,Kcs which are all very strong in Western Europe (9*W) around 2100z (GMT) nightly. best of luck and good hunting Dave ______________________________________________________________ Spooks mailing list Home: http://mailman.qth.net/mailman/listinfo/spooks Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Spooks@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Spooks mailing list Home: http://mailman.qth.net/mailman/listinfo/spooks Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Spooks@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
