[Yaesu] Transistor replacements

NPAlex at aol.com NPAlex at aol.com
Mon Jun 15 17:45:40 PDT 2009


 
Joe,
 
I doubt if the device requirements for a squelch circuit are very demanding 
 and therefore almost any matching type of silicon NPN or PNP device will  
work.  The squelch circuit is usually not very sophisticated as it detects  
the change in noise in the IF limiter, and ends up switching the audio amp  
circuit on.  All devices working a essentially audio or DC  levels.   
Therefore I think most utility devices of the same type  (NPN) will be 
satisfactory.
 
Norm W4QN
--------------------------------------------------------------------------

Message:  1
Date: Sun, 14 Jun 2009 22:14:00 -0500 (CDT)
From:  crawfish at surfmore.net
Subject: [Yaesu] 2SC372Y Transistors
To:  yaesu at contesting.com
Message-ID:
<3747.63.85.209.89.1245035640.squirrel at webmail.surfmore.net>
Content-Type:  text/plain; charset=iso-8859-1

Dos anyone have any 2SC372Y transistors?  I need 3 to fix the squelch
circuit in an FT-227R( I have the service  manual).
Joe W4AAB





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