I am looking for information on the Drake MN-75 tuner and would like to
find a schematic to compare with the MN-7 tuner (I have a manual for the
MN-7).. I think think the MN-75 has a few more positions on the
inductor, but am wondering about other differences in the tuners. Any
commentary or
See http://www.wb4hfn.com/DRAKE/DrakeManuals.htm
73,
Bob WW3QB
--- On Mon, 9/7/09, Jim Zellmer j...@ka0vsl.com wrote:
From: Jim Zellmer j...@ka0vsl.com
Subject: [Drakelist] Looking for info on MN-75
To: drakelist@zerobeat.net
Date: Monday, September 7, 2009, 2:22 PM
I am looking for
Lately, my TR-4C has developed an annoying quirk. Shortly after
turning it on (sometimes immediately, sometimes after 10 minutes or
so), the S meter will go nearly full scale and stay there. Usually
keying the mic several times will stop this and it will return to
normal operation (only has
Loren -
The S-meter current is derived from a bridge that compares the plate
current drawn by V4, V11 and V15 with the current drawn by V17.
From your description, I'd check the cathode resistor and cathode
bypass of V17.
73, Garey - K4OAH
Loren McCullough wrote:
Lately, my TR-4C has
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