[Top] [All Lists]

[TenTec] Amp Keying w.o. hot switching

To: <TenTec_Eagle@yahoogroups.com>, "'Discussion of Ten-Tec Equipment'" <tentec@contesting.com>, <Ten-Tec-Omni-VII@yahoogroups.com>
Subject: [TenTec] Amp Keying w.o. hot switching
From: "Rick - DJ0IP / NJ0IP" <Rick@DJ0IP.de>
Reply-to: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: Mon, 16 Dec 2013 20:18:52 +0100
List-post: <tentec@contesting.com">mailto:tentec@contesting.com>
There has been a lot of discussion on this topic recently on all of the

I will copy all three groups with this, and I apologize to those of you who
receive it three times.


I have created a web page on this topic, show pictures of three typical
types of T/R relays you may find inside an amplifier.

BTW, ?T/R? means Transmit/Receive.  It is the relay inside the amp that
bypasses the amp in RX mode, connecting the antenna directly to the


I point out the different sequential timings of the Orion, OM7, and Eagle.

I also explain why I think TEN-TEC should extend these parameters of them on
all three models.


I suggest several different ways of addressing this problem.


Which method will work best for each of us depends on several things:

¨      Which amplifier we have and what kind of relay technology it has

¨      Whether we want full-QSK or simply clean (not hot) switching

¨      Which transceiver we have


In some cases additional hardware is required.

I show a couple of products that will work and I contrast them.


GUYS, I have put this together quickly, mostly from memory.

I am not the sharpest tack in the pack.

Indeed most of my friends are a lot sharper than me, but with their help, my
web site keeps getting better.


PLEASE SHARE FEEDBACK with me, especially corrections!




Rick, DJ0IP




TenTec mailing list

<Prev in Thread] Current Thread [Next in Thread>