Yes it needs to be connected. It is not a fuse but a test point for driver bias.
73, Gary
http://home.roadrunner.com/~w8pu
R-4A T4-X R-4B T4-XB R-4C T4-XC MS-4 L-4B RCS-4
2A 2B 2C 2NT 2CQ 2AS 4-LF
TR-4 TR-4C TR-4CW/RIT RV-4C MC-4
TR-7 RV-7 CW-75 MS-7
WH-7 W-4 WV-4 MN-2700 MN-4C MN-2000
UV-3
to buy one.
Steve w7jsc
--
From: Jim Shorney jshor...@inebraska.com
Sent: Friday, March 21, 2014 8:14 PM
To: J. Steven Cochrane w7...@msn.com; drakelist
drakelist@zerobeat.net
Subject: Re: [Drakelist] TR7 Driver Stage on PA Board Questions
I
I assume you are referring to T2302, there are no 28xx parts on the PA deck. I
suspect what you are seeing is one of the lead wires from T2302, which is part
of the RF filtering system for the collector voltage to the drivers. It looks
to be bifilar wound, so yes, a break in the common lead would
I have two TR7 questions:
1. There is a VERY fine wire, like fuse wire, that runs next to T2802 toroid
(side closest to the final amp stage), it is broken. Could that be why I don't
have 13.6 volts going to the Driver Transistors (there is 13.6 volts at the
Test Jumper for the Bias
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