|[AMRadio] Stock or modify? BC rig "value" -- Shorting Sticks|
rickbras at airmail.net
Thu Jun 1 15:37:40 EDT 2006
Speaking of "shorting sticks", I saw one a while back on the e-place,
but didn't seriously bid on it. Can one of you guys enlighten me as to
the best material to use for the insulator and about how long to make it?
> Not only is a shorting stick not a bad idea, not using one is a
> terrible idea. As someone who has spent many hours working on high
> power transmitters, I would NEVER touch anything inside a transmitter
> without first touching it with a shorting stick. When I do not have
> a proper shorting stick available, I connect a grounded wire to a
> well insulated screw driver and use that as a makeshift shorting
> stick. There is are no allowable exceptions to the shorting stick
> rule, as far as I am concerned.
> Never rely on meters, pilot lamps or switch positions to tell you if
> HV is present. Switches can short and pilot lights can burn out.
> I've seen at least one high power uplink amplifier where the
> designers used the bleeder resistor as part of the meter multiplier
> string. An open bleeder meant zero HV on the meter but possibly a
> full charge on the filter caps. In that situation a shorting stick
> could be the difference between life and death. Never, ever, touch
> anything inside of a high power transmitter without using a stick.
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