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2 comms 1 antenna

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gregory.scott1(at)virgin.
Guest

Posted: Mon Dec 17, 2007 7:00 am Post subject: 2 comms 1 antenna

Hi,

 A newcomer to this list so forgive me if this  question(or similar) has been posed before. I am building an RV9 with  2 comm radio's, a Microair M760 with an ICOM A210 and both thru a PM3000  Intercom.  My plan is to have a single Antenna and use a 4 pole 2 way  switch, 3 poles to switch the audio and the 3rd. to control a 50 Ohm Coax  switching relay to connect the antenna.  Any forseen problems with this? if  so should I use 2 Antenna? this I thought would risk damage to the receiver  input of the non transmitting Comm.

 Greg Scott

 RV4  G - RVIV

 U.K.

   [quote][b]

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nuckolls.bob(at)cox.net
Guest

Posted: Tue Dec 18, 2007 7:08 am Post subject: 2 comms 1 antenna

At 02:56 PM 12/17/2007 +0000, you wrote:



 	  Quote: 	
		  Hi,

A newcomer to this list so forgive me if this question(or similar) has 

been posed before. I am building an RV9 with 2 comm radio's, a Microair 

M760 with an ICOM A210 and both thru a PM3000 Intercom.  My plan is to 

have a single Antenna and use a 4 pole 2 way switch, 3 poles to switch the 

audio and the 3rd. to control a 50 Ohm Coax switching relay to connect the 

antenna.  Any forseen problems with this? if so should I use 2 Antenna? 

this I thought would risk damage to the receiver input of the non 

transmitting Comm.


	


    Most schemes to avoid dual antennas are

    either cumbersome or hazardous to the

    radios. Suggest you plan on dual antennas.



    There's been a lot of discussion about

    this on the List. You can search the archives

    at:



http://www.matronics.com/searching/ws_script.cgi



    Search the AeroElectric list for the word

    "duplexer"



    Bob . . .

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