[Test-Equipment] What are "cathode jacks" on a tube tester?

[Richard Knoppow]

    I don't think so. Perhaps your tester is not quite the same 
as the commercial version. I don't know what the cathode jacks 
are but perhaps for measuring cathode current with an external 
meter. In this case it appears the grid bias at the socket is 
being measured, maybe something else.
    KS items are those made for Bell System but not by Western 
Electric. The initials mean "Kearney Specification" for the WE 
plant at Kearney N.J. WE bought a lot of commercial items or had 
them made to spec that were for some reason not economical for WE 
to supply. When I worked for Hewlett-Packard we had a  number of 
instruments, like transmission testers, that were pretty much 
standard -hp- items with WE KS labels. Sometimes with some 
changes, usually minor stuff like terminal impedances or meter scal

On 6/29/2019 10:35 AM, Doug Hensley wrote:
> Guys,
> 
> I trying to troubleshoot a HICKOK 539x type tube tester and following some pointers being sent to
> me by the pros at AWA.  The next test is to connect my VOM this way:
> 
> " set the selectors for a 6L6 leaving the the rest the same as out last test. Put 1 lead of your multimeter in one of the the cathode jacks at the top of the tester and the other in pin 3 of the octal socket with the meter set for 200 VDC. Remember count counterclockwise on the socket for pin 3. Now press P4 and do the same rotation on the VR knob. Your multimeter should now show the voltage that that we were looking for on the main meter.
> 
> My actual tester is a KS-15750-L1 which looks like the same.
> 
> Could he possibly be calling the pin straightener's 'cathode jacks' ??
> 
> Doug W5JV


-- 
Richard Knoppow
1oldlens1 at ix.netcom.com
WB6KBL