[TenTec] Separate receive antenna for Eagle.

[Rick - DJ0IP / NJ0IP]

SRI, but I think that is VERY DANGEROUS, Carl.

The RX ANT line has a protection relay that grounds the line during TX.
This protects the RX front end.  Unfortunately it is before the Cable #2
your are referring to.

Cable #2 is AFTER this relay, so the RX is no longer protected by that
relay.
I STRONGLY ADVISE NOT TO DO THIS!
(Unless of course you use your own external relay to protect the Eagle's
RX).

73 - Rick, DJ0IP
(Nr. Frankfurt am Main)


-----Original Message-----
From: TenTec [mailto:tentec-bounces at contesting.com] On Behalf Of Carl
Moreschi
Sent: Thursday, January 15, 2015 10:29 PM
To: Discussion of Ten-Tec Equipment
Subject: Re: [TenTec] Separate receive antenna for Eagle.

There's a much easier way with no relays at all.  You would end up with a
spdt switch to select the receive only antenna.

Inside the Eagle, you will find cable #2.  This cable carries the receive
signal to the Eagle receiver.  All you have to do is cut this cable and
bring the two connections out of the back of the Eagle. One end of the cable
would go to the common of the spdt switch.  The other end of the cable would
to the normally closed contact of the switch. 
The receive antenna would go to the normally open contact of the switch.

That's all you need.  No relays at all.

Carl Moreschi N4PY
58 Hogwood Rd
Louisburg, NC 27549
www.n4py.com

On 1/15/2015 4:17 PM, Katz Ajamas wrote:
> Any suggestions?
>
> I'm thinking  3 SPST reed relays . One to switch the Tx antenna. One 
> to switch detuner for the Tx antenna. One to switch the Rx antenna. 
> The reed relays switch in ~1ms so the 17ms transmit antecedent is 
> plenty. They are rated for 10**7 cycles.
>
> 73, Bob ah7i/w4
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