[TenTec] 238A rotary switch knobs

[Bill Miner]

I have an older 238 tuner and the knobs were just fine for several
years.  It became necessary to replace the elastic dial cord and when I
put everything back together I over tightened one of the knobs and it
cracked!  

I was able to repair the knob by taking a turn of solid wire around the
core of the knob that goes over the shaft.  I tightened the solid wire
by twisting the end and then soldered the twisted end and then tucked it
inside the knob.  So far my repair has held. A short  piece of metal
tubing  (if you can find the correct diameter) over the inside of the
knob for reinforcement would probably be an even better solution.

Stronger material and/or  knobs with two set screws would be an even
more elegant solution.

73, Bill - K6WLM

Richard Robinson wrote:
> 
> TenTecians,  I have a 238A about 6 months old and zero problems with the
> knobs. Are we talking
> about older 238A's or did I just ..............
> 73  Richard   NW4P
> 
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