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Re: IC910H

I am not sure why you need to do this, but you could place a coaxial relay  with its common port at the antenna connector of the radio and utilize the PTT function from the radio to switch between the T and R ports. Of course you will need to make sure that the radio can provide a PTT function which tracks the 2 M band exclusively and will sequence appropriately when transmitting to prevent damage to your external equipment.

Otherwise, you will have to tear into the radio and isolate the RX port from the internal antenna switch. This is probably a 50 OHM cable between the PA and the receiver front end.


Message: 13
Date: Wed, 13 Jul 2005 20:34:08 -0000
From: "Jacques RAMBAUD" <f6bki@wanadoo.fr>
Subject: Re: [amsat-bb] IC910H

Hello again , based on the answers I received it seems that I have not
formulated my question correctly.
Yes there are 2 or 3 ( with the 1.2GHz option) RF connectors on the IC910 ,
I do not want to combine the 3 bands to a common cable .
For my 2 meters EME station I want to add an aditional RF connector on the
back panel of the 910 to serve as a separate RX input for 2 meters , The
original 2 meters RF connector will be the RF out for 2meters . To achieve
this goal some modifications have to be done inside the radio , I wanted to
know if some people have done it and how.
Jacques F6BKI 
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