[Collins] 312B-4

Glen Zook gzook at yahoo.com
Tue Feb 21 23:32:26 EST 2006


Often baking will bring a resistor back into
tolerance.  However, it is going to go out of
tolerance again.  How fast depends on several factors.
 But, you can be assured that within a period of time
that the resistor will be out of tolerance again.

Here is the URL where the 312B-4 / 312B-5 manual can
be downloaded for free:

http://www.collinsradio.org/312B-4-5_3rd-ed-09-62_.pdf

Glen, K9STH


--- Cam and Juli Hedrick <walnutcreek at appstate.net>
wrote:

I've noticed that my 312B-4 and 312B-5 read output
power levels lower by about 12% and 20% respectively
than my Bird or Drake which give identical readings. 
I've used two different plugs in the bird and gotten
the same reading.  What's up...Caps out of value, or
maybe carbon resistors? By the way, an engineer with
IRC has informed me that you can bake a carbon
resistor and bring it back into tolerance.  Has anyone
ever heard such a thing before?







Glen, K9STH

Web sites

http://home.comcast.net/~k9sth
http://home.comcast.net/~zcomco

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