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Re: LF: TS-590S and WSJT-X TX Delay option question please?

To: LF Group <[email protected]>
Subject: Re: LF: TS-590S and WSJT-X TX Delay option question please?
From: Riccardo Zoli <[email protected]>
Date: Sun, 11 Nov 2018 17:41:42 +0100
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Hi Chris,

I think the safest switching method for your PA is to inhibit the driving circuitry in RX mode and introduce a "physical" delay, for example with a simple RC on the logic input of the same inhibit circuitry. The RC time constant should be obviously slightly higher than switching delay of your antenna relay.

All the best

73 de Riccardo IW4DXW

Il giorno Dom 11 Nov 2018, 14:21 Chris Wilson <[email protected]> ha scritto:

Hello  LF'ers.

 Hi, I run a fairly odd set up. TS-590 in split mode, TX'ing at 272 kHz
from the DRIVE socket into a 1kW amp which by design halves the
frequency. I use the X2 function in WSJT-X to give the correction
needed. On RX I receive on 136kHz dial frequency.

I use the 590's RX antenna socket for reception and use the same
antenna for RX and TX. I use a home built antenna change over box
using a high power Russian coaxial relay. This has a 20mS change over
time. The maximum delay I can put in the 590 menu for TX delay is
20mS. Can I use the WSJT-X TX delay to add 0.5 seconds of delay before
RF is issued from the amp to give more time for the relay box to
change antenna from the RX Antenna socket of the 590 to the DRIVE

Thanks,  I  hope  the above is clear enough! Ask for any clarification
please :)


Best regards,
 Chris                          mailto:[email protected]

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