[TowerTalk] MFJ-998 autotuner problem
Roger D Johnson
n1rj at roadrunner.com
Sat Dec 16 15:10:03 EST 2017
I recently discovered a problem with my MFJ-998 tuner that might also be a
problem with other tuners.
There are two banks of series/parallel capacitors that are switched on the input
side of the L network to
match low impedance loads. One bank consists of (8) 3900pf capacitors that total
1950 pf. In my tuner
these caps were only 390pf!!
If these PC boards were populated using a machine getting parts from a reel,
there are probably more
tuners out there with the wrong caps.
73, Roger N1RJ
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