Re: [Drakelist] TR7 Driver Stage on PA Board Questions

2014-03-22 Thread Gary Poland
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

Re: [Drakelist] TR7 Driver Stage on PA Board Questions

2014-03-22 Thread J. Steven Cochrane
Thanks Jim Oh boy, yes T2302. I don't know why I said 2802, I guess that's what happens when your old, tired and frustrated. I figured that's where my 13.6 volts was going by following the schematic but wanted to confirm it before I started dissecting T2303 to get to T2302. I wonder if I could

Re: [Drakelist] TR7 Driver Stage on PA Board Questions

2014-03-22 Thread Jim Shorney
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