Try this test.
Hook the meter up backwards, I.e. switch the coax cables.
now the reflected position will read forward power and the forward
position will read reflective power
see if the reflective meter position moves now when you squirt some RF
into it. if it doesn't check the output of the diode before you start
with the pot.
you could have a solder problem (not unusual with mfj) on the selector
switch
Mike, WB8VGE
SunLight Energy Systems
The Heathkit Shop
http://www.theheathkitshop.com/
J e e p
o|||||||o
A man with one clock knows what time it is. A man with two clocks is
never sure.
On Jan 16, 2010, at 8:46 PM, Luther Nallie wrote:
Now that I can get on all bands with my TR4Cw, my tuner went on the
blink. It is an MFJ 941D (which is a cheapie, but has worked good for
me). I had no meter movement and I changed out the two germanium
diodes (1N34A) and got my meter working on forward power but not
reflected power. There is a variable resistor located between the two
diodes labeled 500K RL that is shot. I don't know the power rating of
that component or where to find it, but I think that would fix my
reflected power problem. Any help would be appreciated. I know this
is off topic, but I need it to use my Drake!
Thanks,
Luther, KQ5O
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