[TenTec] TenTec Digest, Vol 47, Issue 45

[Art]

Tim
I use a relay powered from switched TX voltage in the rig to dump rx ant power into a 47 ohm 2W resistor during transmit. My rx ant was much closer than yours. It got warm so I'm glad I chose 2W. I just used a small cheap relay. It was fast enough to follow the QSK.

2W heat came from using an amp. Barefoot, 1/4 wave away, you might not have to worry about it. If you have the time, test the theory out. Ground your rx ant thru a 50 ohm resistor, measure the induced volts with a rf meter or o-scope for your power calculation. Someone on the reflector will know what the dissipation capability of the rx ant input is. Sorry I don't.

73 Art

Message: 1
Date: Mon, 27 Nov 2006 08:03:23 GMT
From: "k3hx at juno.com" <k3hx at juno.com>
Subject: [TenTec] RX input  Orion 1
To: tentec at contesting.com
Message-ID: <20061127.000412.10554.1334144 at webmail18.nyc.untd.com>
Content-Type: text/plain


In the upcoming 160M contest, I plan to TX on ANT 1.

My RX antenna is about 1/4 wave away (that is as far as I can get it

away from the TX anenna)and will likely couple a 

considerable amount of energy from the TX antenna.  No amp, barefoot.

I have the original Orion.

Does the radio short out or open the RX antenna input during TX?

73

Tim Colbert  K3HX



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