[CQ-Contest] SO2R technical questions

[john at kk9a.com]

Both of these devices are for receive antennas only and you should still use
bandpass filters with them in a multi-transmitter environment. When running
HP, I typically just short the RX antenna when transmitting however this
only works when using a Beverage with a single radio. Yesterday I purchased
the DX Engineering RG-5000 hoping to eliminate the shorting relay.

John KK9A


To:	"'Jeff Blaine'" <jeff at ac0c.com>,	"'Mike & Coreen Smith
VE9AA'" <ve9aa at nbnet.nb.ca>,	<cq-contest at contesting.com>
Subject:	Re: [CQ-Contest] SO2R technical questions
From:	"Bill Hider" <n3rr at erols.com>
Date:	Wed, 21 Jan 2015 11:33:44 -0500

I use the AS-RXFEP RX Front End Protector on each of my IC-7800s.
http://www.arraysolutions.com/images/AS-RXFEPdatasheet.pdf

I operate my station as a SO2R, M/S or Multi-2 station.  The AS-RXFEPs have
been in service since I 
purchased my 2nd radio.

I am a satisfied customer with no financial interest in Array Solutions.

Bill N3RR


-----Original Message-----
From: CQ-Contest [mailto:cq-contest-bounces at contesting.com] On Behalf Of
Jeff Blaine
Sent: Tuesday, January 20, 2015 11:41 PM
To: Mike & Coreen Smith VE9AA; cq-contest at contesting.com
Subject: Re: [CQ-Contest] SO2R technical questions

Putting some sort of front end protection on the rig when working out the
coupling and isolation issues is a great idea.  I've never fried anything in
the last 6 years of So2r fooling about.

However, it can happen.  A couple of weeks back I literally got my wires
crossed when running a test on a rig and ended up dumping 100W into my main
station rig.  Fortunately replacing the ailing board was not difficult but
it was expensive.

Assuming your rig has facilities for a RX antenna, something like this is
really cheap insurance...

http://www.dxengineering.com/parts/dxe-rg-5000

73/jeff/ac0c
www.ac0c.com
alpha-charlie-zero-charlie