[AMPS] FAILURE OF PARASITIC RESISTORS IN AL-811X AMPLIFIER

[Tom Rauch]

> I have had the great misfortune to receive (free) two mfj "3kw" antenna
> tuners.  Pure junk! - mediocre design and very poor implementation.

A tuner sold by Ameritron (ATR-20) using the same inductor is 
rated at 750 watts CW, but there are electrical differences. The 
Ameritron tuner includes a peak reading meter that really reads 
peaks, and has higher capacitance variables.
 
> I had an mfj antenna switch - also junk - it is now contaminating a
> landfill somewhere.  

The four position indoor MFJ antenna switches had a dimension 
error in the casting for the housing that prevented the contacts from 
seating properly. Some worked, and some didn't.


73, Tom W8JI
w8ji@contesting.com

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