[Collins] Reluctant filter switch on 51J-4 - Solutions?
Wn4i
wn4i at arrl.net
Sun Dec 25 19:30:32 EST 2005
Never in my life ......I remember working for Motorola using a 51J4 back
in the 1970-1980 every days as a frequency meter ( recalibrated on every
bands ) with no Problems whatsoever ...in order to recalibrate two way
Radios for polices , fires , ambulances and taxi driver ....At the time a
frequency meter was over $ 50.000
Never had any problems as you describe ....but yes the switch needed a
clean every years only after many years of uses .
73
Yves Wn4i .....mine is still for sale ...make me an offer ?
----- Original Message -----
From: "Chris Kepus" <ckepus at comcast.net>
To: <collins at mailman.qth.net>
Sent: Sunday, December 18, 2005 8:24 PM
Subject: [Collins] Reluctant filter switch on 51J-4 - Solutions?
> My 51J-4 plays and works very nicely with a few odd exceptions:
(previously
> noted on this list) but the one thing that now concerns me most is the
> amount of effort that it takes to switch from one filter position to the
> next. It seems like that small switch lever behind the knob is about to
> bend or break every time it finally moves to the next position
(regardless
> of rotational direction). Out of concern that the lever might break, I
have
> stopped using the switch until I have time to pull the unit out of the
rack
> and examine it. Is this rotational resistance just one of the switch's
> characteristics...or ???. For those of you who use a 51J-4, is it
"easy" to
> change filter positions using your filter switch lever or do you feel
like
> the lever is about to bend or break each time you use it? If the normal
> state of affairs is a switch on which the positions can be easily
changed,
> does anyone have an idea of where I should look for a problem with my
switch
> mechanism? If anyone has successfully corrected a similar problem,
would
> you be kind enough to share your method?
>
> Thanks, 73, Merry Christmas, Happy Honnuka, and Seasons greetings to
all!!
> Chris
> W7JPG
>
>
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