[Collins] Fwd: 51S1 reception gone

[Dr. Gerald N. Johnson]

On Mon, 2008-09-08 at 12:26 -0500, Jaime Gomez wrote:
> Hello friends,
> I have a 51S1 that I use as second receiver. My rigs have been out of the
> air for over 6 months, because I was out of country. Yesterday I turned on
> the 51S1 and it was receiving fine, I changed the bands to 760 KCs and now
> when I turned it back to 7 MHz it is receiving very very low, with full
> audio gain I can barely hear anything. Any suggestions? I have the original
> operators manual and I saw that there is a S6 switch in the band switch, I
> checked it and it seems to be working OK,
> Appreciate any hints
> 
> -- 
> Jaime Gomez HK1N
> Barranquilla, Colombia
> Tel: +57 312 6642680
> 
Probably it will recover (like an S-line) with vigorous operation of the
bandswitch to clean the contacts. Less violently it would be preferable
to apply a quarter drop of DeoxIT to each switch contact and run the
band switch through all positions a few times, vigor not needed. Its not
a good idea to use the spray version because the insulation wafer of the
rotary switch are not improved by being soaked with DeoxIT. Its better
to use the dropper bottle and then quite sparingly.


-- 
73, Jerry, K0CQ, Technical Advisor to the CRA
All content copyright Dr. Gerald N. Johnson, electrical engineer