[Elecraft] KRX3 ANT input flexibility

[Ken Kopp]

I purchased the KRX3 to monitor 6M while the radio is in use
on other bands  I connect a 6M omni antenna to the KRX3
and use the KAT3's #2 antenna to feed a 6M array when
the K3 is switched to 6M.  The resulting diversity receive
-is- impressive!

The as-designed choices to select what antenna is routed 
to the KRX3 is limited (IMHO) and here's my method of 
achieving more flexibility in using the KRX3:

The BNC(F) to TMP(M) cable is installed in the normal manner
and is routed to the area atop the rear of the KRX3.  The cable
from the KAT3 tuner is also routed to the same area.  

I've made a short TMP(M) to TMP(F) extension cable to run 
from the KRX3's TMP(F) input connector to the same area atop 
the KRX3.  This allows me maximum flexibility in what source 
is fed to the KRX3's antenna input by just removing the K3's 
top cover and swapping connections to suit my need.

The board-mounted TMP(F) jacks are somewhat fragile and if 
one attempts to "sneak" the extension cable into the KRX3's 
jack from above and the shell will likely be expanded, resulting 
in a loose fit.  To keep stress on the jack to a minimum, I secure 
the extension cable to the knurled nut on the top of the KRX3.

It's -much- easier to make the connection to the KRX3 input
jack if the KIO3 panel is removed to allow easy access to the
rear of the KRX3.

73! Ken Kopp - K0PP
      ElecraftCovers at rfwave.net
      http://tinyurl.com/7lm3m5