Swan 270

[RAY FRIESS]

So Swan was the first to use "spread spectrum transmission"   HI HI
Ray  wa7ITZ
  ----- Original Message ----- 
  From: Glen Zook<mailto:gzook at YAHOO.COM> 
  To: BOATANCHORS at LISTSERV.TEMPE.GOV<mailto:BOATANCHORS at LISTSERV.TEMPE.GOV> 
  Sent: Sunday, August 19, 2007 11:50 AM
  Subject: Re: Swan 270


  I know it!

  But, unfortunately, most Swan units tend to drift and
  many pretty badly.

  This is due to the fact that Swan did not use a fixed
  VFO range (usually 5.0 MHz to 5.5 MHz) and a crystal
  controlled conversion oscillator/mixer for the various
  bands.  Instead every band on the Swan units (with the
  usual exception of 80 / 20 meters) has a different VFO
  frequency that is mixed with the SSB generator.  Since
  the stability of the VFO decreases as the frequency
  gets higher, the stability of the transceiver gets
  worse and worse the higher the frequency of the band. 
  By the time 10 meters is reached most Swan units are
  pretty darn "drifty".

  Glen, K9STH


  --- Bob W5UQ <w5euq at verizon.net<mailto:w5euq at verizon.net>> wrote:

  you guys are terrible... :-D Bob









  Glen, K9STH

  Website:  http://k9sth.com<http://k9sth.com/>


         
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