Johnson Kilowatt Matchbox help
 

Anyone have a problem with the the swr indicator being hard to set in the
calibrate position? The calibrate pot seems to be VERY touchy to get the
meter to hold at full scale, and changing the meter to a 0 to 1ma shows the
same problem.(With a kilowatt input) I went back to the 100 ua meter and now
I am wondering if it is the pot. Of course the 0 to 1 ma meter has a hard
time getting to calibrate with 100 watts into the tuner so I can't see the
same effect because I dont get to the same area on the pot.

The tuner works great otherwise..

Clean the pot perhaps?

Dan/W4NTI

"John" wrote in message
news:lsidc.217108$1p.2506757@attbi_s54...
Anyone have a problem with the the swr indicator being hard to set in the
calibrate position? The calibrate pot seems to be VERY touchy to get the
meter to hold at full scale, and changing the meter to a 0 to 1ma shows
the
same problem.(With a kilowatt input) I went back to the 100 ua meter and
now
I am wondering if it is the pot. Of course the 0 to 1 ma meter has a hard
time getting to calibrate with 100 watts into the tuner so I can't see the
same effect because I dont get to the same area on the pot.

The tuner works great otherwise..