Topband: Detuning TX ant + QSK

[CUTTER DAVID]

Jim
This will be an issue for me shortly: which part of your tx antenna do you switch for de-tuning? I'm building an inverted L on an FCP and I'm looking for the most convenient place, physically and RF-wise.
David G3UNA/G6CP

> On 28 November 2018 at 13:18 John Kaufmann <john.kaufmann at verizon.net mailto:john.kaufmann at verizon.net > wrote:
> 
> 
>     Jim,
> 
>     I use Gigavac GH-1 vacuum relays for detuning my TX antennas when receiving. The contact closure/release time is 6 msec. You have to dial in enough QSK delay in your radio so that you don't hot-switch the relays.
> 
>     73, John W1FV
> 
>     -----Original Message-----
>     From: Topband [mailto:topband-bounces at contesting.com mailto:topband-bounces at contesting.com ] On Behalf Of Jim Thomson
>     Sent: Wednesday, November 28, 2018 5:26 AM
>     To: TopBand List
>     Subject: Topband: Detuning TX ant + QSK
> 
>     For you folks that have to de-tune your TX ant, so your dedicated RX ant works correctly,
>     if you also operate qsk, how do you do it ? Are you using a sped up vac relay to de-tune
>     the TX ant ? I don’t see any other way to accomplish that task. Or do you use vox cw ?
> 
>     Jim VE7RF
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