[ARC5] Odd Freq FT-243 you looking for

[Ken]

I have purposely bought as many FT-243  crystals as I could in any frequency below the 40 meter band, then I etch them to a chosen frequency with Whink Rust Remover. It is slow, but works well. I am slowly accumulating 40 meter crystals beginning at 7000 kHz every 5 kHz to the top of the band.80 meter crystals are hard to find and 160 meter rocks are just plain scarce to non-existent. 60 meter crystals might be a bit easier.One can also get artist's glass etcher at hobby stores. Both contain hydro-flouric acid, which is dangerous stuff even at low strength.Ken W7EKBSent via the Samsung Galaxy S21 5G, an AT&T 5G smartphone
-------- Original message --------From: Glenn Little WB4UIV <glennmaillist at bellsouth.net> Date: 7/31/23  18:29  (GMT-08:00) To: arc5 at mailman.qth.net Subject: Re: [ARC5] Odd Freq FT-243 you looking for 
    Are the frequencies on the crystals
      channel or crystal frequency?
      If channel frequency and receive crystal, the crystal frequency
      could be a by offset by an if frequency and a multiple of the
      crystal frequency.
      
      Glenn
      WB4UIV
    
    On 7/31/2023 3:12 PM, Paul Thekan
      wrote:
    
    
      
      Thanks again to all that responded to my post
        yesterday for info on crystal mfr's during the war.
         As I slowly go througj the pile of xtals
          here...I'll be happy to keep a look out for any non ham band
          freqs you may want. So far out of 350 xtals looked at , only
          two 40 mtr xtals were found. 
        So far the highest freg found is around 8mcs.
          The bulk so far is around 5 -6.9 mcs and others in the 4mc
          range.
        
        
        Also have quite a few DC 34 xtals as used on the
          BC669 , these all in the 4 mc range.
        
        
        Let me know what you your looking for.
        
        
        Paul 
        N6FEG
        
        
        
        
        
        
        
        
        
        
      
      
      
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    -- 
-----------------------------------------------------------------------
Glenn Little                ARRL Technical Specialist   QCWA  LM 28417
Amateur Callsign:  WB4UIV            wb4uiv at arrl.net    AMSAT LM 2178
QTH:  Goose Creek, SC USA (EM92xx)  USSVI, FRA, NRA-LM    ARRL TAPR
"It is not the class of license that the Amateur holds but the class
of the Amateur that holds the license"
  

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