[R-390] R-390A Alternatives for regulator 3TF7 - 12BH7, 12BY7, etc

[Craig]

Another option to replace the 3TF7, thus saving money for good whiskey: Jumper pins 2 & 7 on the 3TF7 socket and replace the 6BA6 tubes for the BFO & PTO with 12BA6 tubes. 

Regards,
Craig

-----Original Message-----
From: R-390 [mailto:r-390-bounces at mailman.qth.net] On Behalf Of Larry H
Sent: Thursday, April 07, 2016 9:35 PM
To: 390 List
Subject: [R-390] R-390A Alternatives for regulator 3TF7 - 12BH7, 12BY7, etc

If you have the 2 wire change on the regulator socket, these can be plugged in and work well: 12BH7, 12BY7, 12CT8, 12DQ7, and 12FX8. Regards, Larry

     
  
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