[Boatanchors] TS-505 D/U

[Richard Knoppow]

   The 5651 is a voltage reference tube. Forgot its voltage but its used 
in various voltage regulated supplies to provide a very stable reference 
source. You will find a data sheet at:
<https://frank.pocnet.net/sheets/127/5/5651.pdf

For the TS-505D/U see:
<http://www.bunkerofdoom.com/lit/ts505/ts505d.html>


Preliminary handbook at:
<https://radionerds.com/images/2/20/TS-505_Manufacturer_Instruction_Book.pdf>

    This has a reference to a later handook:
<https://www.radionerds.com/images/c/c6/TM-11-5511.pdf>

     Can't tell you anything specific, I don't think I ever saw one.
     The version in the handbook linked above has two neon lamp 
regulators, perhaps replaced by the 5651 tubes in yours.

    As nearly always start trouble shooting with the power supply.


On 6/17/2024 11:30 AM, Doug Hensley wrote:
> Opening up a clean TS-505 D/U vtvm.  Anyone have any experience with these?  My meter powers up, all 4 fuses are good.  Meter shows an attempt to fluxuate.  But no zeroing or other life.  Has two 5651WA tubes which may be military version of OA3 (??).
> 
> Any memories anyone ?
> 
> TIA,  Doug
> 

-- 
Richard Knoppow
Los Angeles
WB6KBL
SKCC 19998