[Elecraft] Connections to K3 ant 1 & 2

[N3XX]

Thanks to everyone for your responses and suggestions.
I have decided to order a "TwoPak" rf switch from Array solutions.
There are less costly ways to go, but I like the specs I see on their 
website.
High pwr handling, good well above the highest frequency I intend to use, 
and >80 dB isolation between ports.
I will still measure power on the unused port when transmitting through the 
other, to see how much I would be putting back into the K3.  Only after this 
will I connect everything up to both antenna connectors on the K3 if all 
looks good.
Will post here again when I have tested and have all connected & working.

73,
Tim - N3XX

----- Original Message ----- 
From: "N3XX" <n3xx at charter.net>
To: "Elecraft Reflector" <Elecraft at mailman.qth.net>
Sent: Thursday, May 20, 2010 6:18 AM
Subject: [Elecraft] Connections to K3 ant 1 & 2


> Hi to all on the list,
>
> I just finished building my K3 kit a few weeks ago (4175).  All went well,
> and the new xcvr is up & running with no problems.
> The antenna setup at my qth is a single cable from the entrance panel at 
> the
> house going out to tower #1, through a remote antenna switch to select 
> from
> antennas on that tower or another connection going to tower #2.  At tower 
> #2
> is another remote antenna switch to select various antennas on that tower.
> In the shack I have an amp for 160-10 meters, and an amp for 6 meters.
> I would like to connect my single cable coming in from the entrance panel 
> to
> a 2 way coax switch,  with one of the ports going to my 160-10 meter amp,
> and the other going to my 6 meter amp.  Then the 160-10 amp would be
> connected to the K3 antenna connector 1, and the 6 meter amp would be
> connected to K3 antenna connector 2.
> Both amps will operate at the legal limit easily, and my concern is that
> when xmitting through one of the antenna connectors & amp, I will put too
> much rf back through the coax switch to the unused K3 antenna connector, 
> and
> possibly damage the K3.
> I have been changing cabling manually but would really like to be able to
> just operate a switch to make the change.
> So, if anyone on the list doing something similar to what I have in mind, 
> I
> sure would like to hear about your setup, what kind of switch you are 
> using,
> how much port to port isolation is necessary to be safe, etc.
>
> Tnx & 73,
> Tim - N3XX
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html