[Elecraft] KRx3a Install

Sat Feb 20 17:31:18 EST 2016

Sorry it's "scary" installing the KRX3. It is less than reassuring not to be
able to see exactly what the connectors are doing, but it does work - as you
found out. 

To your comment, if you have Rev H of the manual, that step is immediately
before Figure 47 on page 43. Figure 47 it identifies the length of the cable
as 5" (13 cm) for the  J5->J82 cable and 10" (25 cm) for the J84 -> J85
cable.

So that 5" cable was originally scheduled for the J5->J82 run. The left over
cable should have been the 12" (30 cm) cable that would run between J92 and
the KAT3 ATU. It was installed as described on pages 28 and 19 "Installing
the Auxiliary KRX3A Antenna Input via the KAT3A". 

Yes, the current firmware (5.38) displays KRX3 instead of KRX3A. I thought
that was being changed, but apparently not. I'll make a note of that in the
manual for others. Thanks for noting it. 

73, Ron AC7AC

-----Original Message-----
From: Elecraft [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Bob
Novas
Sent: Saturday, February 20, 2016 1:16 PM
To: elecraft at mailman.qth.net
Subject: [Elecraft] KRx3a Install

Today I installed a KRX3A in a K3S.  Not my favorite day.  On the plus side,
I plugged the K3S in and everything seems to be working. Big grin!  On the
negative side.

1.      I do not believe there is anywhere described installing the TMP
cable between KREF3 J5 and KRX3A J82, other than in Figure 47. I didn't know
which length TMP cable to use, so I used a 10" one.

2.      I have a 5" TMP cable left over (I chose to go the Aux Antenna BNC
Connector route).  Is this expected?

3.      I hate the way the KRX3A has to be blindly inserted onto the
input/output connectors.  I guess I got it right.

4.      The config menu says that a KRX3 is installed (not a KRX3A). Is that
ok? (latest firmware all around).

All in all, a harrowing 4 hour experience I don't want to repeat. Hopefully
the results will be worth it!

Bob, W3DK

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