[R-390] 3TF7 resistor replacement

Bob Camp ham at cq.nu
Sun Nov 14 18:19:15 EST 2004


Hi

The resistor goes between pins 2 and 7. Page 115 in the Y2K manual .....

There was a fairly extensive thread on this back a couple of months 
ago. You can probably find it in the archives. All of the plusses and 
minuses of the various ballast tube modifications were brought up.

Best bet is if you have a plug that will go into the tube socket. That 
way you can replace the mod if you find a ballast tube later. 
Alternately you can solder the resistor to the tube socket pins under 
the IF module.

	Take Care

		Bob Camp
		KB8TQ


On Nov 14, 2004, at 4:52 PM, Charles B wrote:

> Can some one give me the specifics on how to replace the 3tf7 Ballast 
> tube with a 42 OHM resistor?  I am wondering where the resistor leads 
> are placed in the tube pin holds etc.  Any help would be appreciated.
>
> Chuck
>
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