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Re: Topband: Detuning Relay Flyback Diode

Subject: Re: Topband: Detuning Relay Flyback Diode
From: Ward Silver <>
Date: Sat, 23 Dec 2017 17:15:58 -0600
List-post: <>
If you have any diodes in a switch box or the like, be sure to add a bypass cap across the diode - 0.01 uF will do.  Diodes are great harmonic generators (and mixers) and equipment connected to control cables or feed lines often is pretty hot with RF current. That includes rotator controllers, too.

73, Ward N0AX

On 12/23/2017 11:00 AM, wrote:
If the radio is keying both the detuning relay and an amp, you want to use
some series diodes to prevent sneak paths between amp key voltage and your
detuning relay voltage. These isolation diodes do not add any delays.

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