[GreenKeys] BC-610

[Lee Mushel]

Dale,

Since you are talking about a WWII radio I assume you are old enough to be familiar with mature circuits.   If you check a 1960's era ARRL Handbook you will find simple circuits for FSKing both crystal and VFO oscillators.   On page 334 of the 1960 edition you will find both assuming the use of vacuum tubes..

And if you move up a few years to the 1971 edition which I got from Dave Hackl, K0HCD, you will find "solid state" equivalents.  I can't provide you with any claims of "experience" since I never even bothered to build the FSK board for the ST-6 and always used AFSK for the local QSO's popular in those days.....

If you happen to have access to Ron Guentzler's articles in RTTY Journal he sort of passes off the topic as being a simple matter of "switching a capacitor on and off of the frequency determining circuit" of a transmitter.   I guess he was on the leading proponents of using radio theory for political purposes!

Yes, I did have a BC-610 but used it only as a source for radio parts (1954).

73

Lee   k9WRU

----- Original Message ----- 
  From: dhagert 
  To: greenkeys at mailman.qth.net 
  Sent: Monday, January 27, 2014 10:40 AM
  Subject: [GreenKeys] BC-610


  Has anyone FSK'd a BC-610 transmitter? Looking for an easy way to do it.

   

  Thanks

  Dale W0IR



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