From: apogosso@tpg.com.au   
      
   "flipper"  wrote in message   
   news:djumu79p9rea3ptlhfn1m5benuifce3l94@4ax.com...   
   > On Wed, 27 Jun 2012 16:21:53 +1000, "Alex Pogossov"   
   >  wrote:   
   >>Oops, surely you are not an RF guy.   
   >>Then do another trick instead.   
   >>Tune any AM radio into a strong local AM station within tuning range of   
   >>your   
   >>transmitter. Then tune your transmitter to a close frequency so that you   
   >>hear beat frequency on the radio. It is better to have the signal from the   
   >>transmitter stronger than this station so that you do not hear the audio   
   >>but   
   >>only the beat whining (with some sideband chatter of course). Then proceed   
   >>with the above described tests. (A carrier of an AM station is even more   
   >>stable than any communications receiver.)   
   >>   
   >>Regards,   
   >>Alex   
   >   
   >   
   > Wouldn't my frequency counter be simpler? hehe   
   >   
   > With carrier at 640 KHz frequency deviation from idle to twice idle is   
   > roughly 70 Hz. Actual measurement was .64015 MHz (resolution limit) to   
   > .64022 MHz.   
      
   It is not bad. I expected worse. Probably 6ME8 has less space charge   
   coupling than a regular heptode.   
   Still 70Hz is not acceptable for listening on a synchronous or SSB detector.   
   In these cases parasitic FM index shall not exceed about 0.25, so with the   
   lowest audio frequency of 50Hz, FM deviation shall not exceed 15Hz.   
      
   But who would deliberately listening to your transmitter on an SSB radio? No   
   one.   
      
   So, well done anyway!   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)