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Old 18th Jul 2013, 11:02 pm   #3
Radio Wrangler
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Join Date: Mar 2012
Location: Fife, Scotland, UK.
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Default Re: Mutek Masthead preamp info needed

RF sense switching as said is best avoided. It switches the relay with power on it and shortens its life. It lets your power amp run up before it gets switched to a load, and they do not like it back up 'em Captain Mainwaring, they most certainly do not!

Use PTT initiated change-over if you possibly can. If the relay contacts are burned, you can guess the cause.

Chris Bartram can still be found on the web if all else fails... I last saw him playing the fiddle at the Microwave Roundtable meeting, playing in a trio with Ian (G3SEK) and Nadine on concertina and auto-harp respectively. RF gurus are versatile people....

David
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