Seems to me that lots of Corona have done it again in this topic.
There's no washer for that. :)
Best regards
Guillermo - LU8EYW.
dj2001@mn.rr.com escribi?:
>
> >----- Original Message -----
> >From: "k7fm" <k7fm@teleport.com>
> >To: <W0YR@aol.com>; <amps@contesting.com>
> >Sent: Thursday, March 06, 2003 9:22 AM
> >Subject: Re: [Amps] Use of Manual T/R Switches
> >
> >
> >> The T/R switch can be a point of concern, as you pointed out. The problem
> >> with a knife switch, however, is after the operator has had too much
> >Corona.
> >
> >
> >What I used to do was hang my feedlines down from the top of a plywood board
> >nailed to the wall. The board was covered with thin copper foil. The shields
> >were connected to the copper by wood screws.
> >
> >My main feeder from THE AMPLIFIER had a foot long braid, and it was screwed
> >to the copper.
> >
> >I bent a hook in the center conductors of each cable, and would simply let
> >gravity make the connection. To change feeders, I just lifted the coax and
> >hooked it on another antenna line. If there was a poor connection, THE
> >AMPLIFIER (as opposed to "amplifier") would weld the cables. To release them
> >it only a sharp twist and a tug, or a ping with a small hammer.
>
> Did the cables jump as they welded the connection? Second thought
> forget that question, we don't want to go there again.
>
> Still trying to understand
> Humbly
> Dale K9VUJ
>
> >I was never able to get this system to work well on QSK, so I used a pair of
> >10 watt 250 volt lightbulbs as a series limiter (they lit like flashbulbs,
> >and doubled as a reminder the power was on) and a 6AL5 tube as a clamp for
> >the receiver, followed by a 6J6 to make up for gain loss.
> >
> >I'm actually serious about this, I used this system for years as an antenna
> >and TR switch. It worked quite well.
> >
> >73 Tom
> >
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