[Elecraft] K2 and X144

Edward R Cole kl7uw at acsalaska.net
Mon Mar 24 13:49:49 EDT 2014


Luc,

The subject line, above, says "K2" but below you ask about a K3.  I 
can answer if you mean a K3.
I assume the K3 has the KXV3 option for transverter interface.  If so 
the Tx and Rx are separated.  I do not have a XV144 but will assume 
it has separate Rx and Tx connections to the KXV3.  If all this is 
true then the solution is easy:

Buy or make a RF splitter (cheap cable splitter for VHF TV will 
work).  Connect the Tx output to the splitter and route cables to 
both XV144 Tx input connectors.  To make a splitter use a BNC or UHF 
Tee and run 6.25 inch of RG-59 (or odd multiples of this length) to 
the Tx input of each XV144.  You will have run the K3 drive twice as 
high as what is needed by one XV144.

The TV splitter uses F-connectors so you might need to buy three coax 
lines with BNC on one end and F-connector on the other (this might be 
found in the TV section of your local store so the cable will be 
RG-59, that will not matter at the low level signals from the KXV3).

For Rx you will need either a coax relay or coax switch (cheap CB 
coax switch will work).  Route the Rx to the switch/relay and route 
the two connections of the switch to each Rx output at each XV144.

How you connect each XV144 to each antenna is up to you. Here is a 
block diagram:
Http://www.kl7uw.com/Dual_XV144.jpg

73, Ed - KL7UW

------------------
Hello, I have and odd and maybe difficult question :

Is it possible to have one (and only one) K3 transmitting into two XV144
on the same frequency, but swaping between them on receive?

The idea is to have a contest configuration with two antennas and two
PA. The two PA are transmitting together but the receiving signal ist
picked up from one or the other receiving chain.

Thanks for any idea !

73
Luc/F6HJO/HB9ABB





73, Ed - KL7UW
http://www.kl7uw.com
     "Kits made by KL7UW"
Dubus Mag business:
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