Johnson Ranger Problem

[Garey Barrell]

Bill -

There was a Johnson modification that addressed this problem.  I can't
find it in my "files" :-)

All I can tell you from memory is that it involved a .02 cap and 220
ohm resistor on SW4-B of the function switch that were removed.  There
was also a wire or two that had to be moved to another terminal on the
switch.

I have to get to the office now, but if no one else comes up with it I
will try again this evening.  It is probably on some web page
somewhere, but ...

73, Garey - K4OAH
Atlanta

----- Original Message -----
From: Bill Evans <bevans at EBSYS.MB.CA>

> I own two Johnson Rangers, both of which have been totally
> restored and operate perfectly. However, one of the units
> has always had a problem which concerns me. The problem is
> arcing at the "OPERATE" switch whenever one is going in or
> coming out of the "PHONE" and "CW" positions - in other
> words, whenever B+ voltage is applied to the tubes.
>
> This "spitting", which can be heard (and seen when it is
> dark), always occurred with the one Ranger, even after it
> was totally restored. However, the other unit is and always
> has been absolutely void of this problem. Both units have
> the CW  Keyer board and PTT modifications - and are
> identical, as best I can tell, in every way.
>
> Does anyone have anything to suggest with respect to the
> cause of this arcing and what might be done to extinguish
> it?
>
> Bill Evans, VE4UD
> 313 Carpathia Road
> WINNIPEG, Manitoba, Canada
> R3N 1T2
> PH:   (204) 489-7434
> FAX:  (204) 487-7199
> E-MAIL: bevans at ebsys.mb.ca