[Johnson] CHALLENGER STANDBY PLATE CURRENT

[Glen Zook]

Do you have a key plugged into the key jack?  The key jack shorts the cathodes to ground when there is not a key plugged in.  80 mA is not right!  It should be 0!

If you have a key plugged in, and the key is open, then there are 2-capacitors that may be shorted.  The most likely is C-3, a 2 mfd capacitor.  The "modern" replacement will be 2.2 mfd.  Replace with at least the rated voltage on the capacitor and a higher voltage rating is better.

The other capacitor is C-4, a .005 mfd capacitor.  The "modern" replacement will be 0.0047 mfd.
 
Glen, K9STH


Website:  http://k9sth.com



On Tuesday, December 17, 2013 2:50 PM, Ed - K9EW <k9ew57 at gmail.com> wrote:
 
I just got my "new" Challenger set up for my winter station, and I have a
question...

The Plate Current is about 80mA with the Operate switch in the Standby
position (Grid Current is zero).  Does that sound right?

Thanks - ed, k9ew
______________________________________________________________
Johnson mailing list
Home: http://mailman.qth.net/mailman/listinfo/johnson
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Johnson at mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html