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#11
October 7th 05, 07:36 AM
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am/narrow-fm/wide-fm/lsb/usb what else?
On Thu, 06 Oct 2005 20:37:32 -0700, matt weber
said in rec.radio.scanner: On Wed, 05 Oct 2005 21:18:23 -0400, Al Klein wrote: On Tue, 04 Oct 2005 10:39:59 GMT, (Peter Newman) said in rec.radio.scanner: On 29 Sep 2005 21:18:12 -0700, wrote: there has to be some other modes that normal scanners wouldn't decode. any thoughts? ISB, DSB ? Any receiver that will receive SSB will also receive DSB, since both sidebands are the same. ISB too, but only 1 at a time. Only if the IF is narrow enough to keep the other sideband out, otherwise you get both at once..... A SSB receiver is one that has a bandwidth narrow enough to receive only 1 sideband. If it's 6 KHz wide it's a DSB receiver. (Yes, almost any ham receiver is either SSB or DSB, depending on the filter you have running at the moment.) Of course finding DSBSC signals on the air today is a bit difficult. (They used to be much more prevalent, but ARC5s are expensive antiques today, not cheap transmitters. And is there still 1 operational DSB-100?) |
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