[Boatanchors] Need Pictures of 275W Johnson Matchbox Interior
Michael D. Harmon
mharmon at att.net
Fri Feb 3 20:08:37 EST 2012
I purchased a 250-23-3 (275W with the SWR meter option) Johnson Matchbox
recently at a local hamfest. When I opened it up to figure out what the
extra UHF connectors were hooked to, I discovered that it had been "hacked".
I'm not sure what the unit is supposed to look like inside, but I'm
pretty sure that the two plastic strips on standoffs in line with the
coil are actually supposed to be SUPPORTING the coil! In my unit, they
are there, but running down through the center of the coil and not
supporting anything. The bandswitch is tilted about 5-10 degrees down
from horizontal. The bushing appears to be correctly mounted to the
vertical bracket, so the frame of the bandswitch may be bent. I don't
know how much trouble it's going to be to get this thing back to
operational status, but it looks like I have my work cut out for me!
I have the manual downloaded from BAMA with the schematic, but it would
be really nice to see how the wiring and components are supposed to be
oriented inside the case. As I mentioned earlier, there are two UHF
additional connectors mounted to the rear panel, and they are connected
to some of the 12-gauge tinned wiring inside the case.
Could someone take a pic or two inside a 275w Matchbox for me so that I
can see how the coil is mounted to the supports. Also, it would be nice
to see how the original wiring was dressed inside the case. I'm pretty
sure what I have is definitely NOT all factory wiring.
Thanks!!!
Mike Harmon, WB0LDJ
mharmon at att dot net
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