Topband: RE : Engineering ?? @ relays

[hermans]

-----Message d'origine-----
De : topband-bounces at contesting.com
[mailto:topband-bounces at contesting.com] De la part de K9AY
Envoyé : mercredi 19 octobre 2005 19:15
À : paul at w8aef.com; Ford Peterson; topband at contesting.com
Objet : Re: Topband: Engineering ?? @ relays

Part of K9ay's msg.

As others have pointed out, RX switching relays can be more troublesome
than 
TX switching due to contact oxidation.  I used sealed relays in my K9AY 
loops,
K9AY

We encountered this problem in audio freq switching years ago, even with
sealed relays. The cure, let flow a DC current of some  mA
similtaneously with the micro Amps of the functional AC signal.

Jos on4kj 
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