[Elecraft] Not hearing signals in K2 with EC2 enclosure KPA100/KAT100 combo

[Brian Pepperdine]

On the weekend, I picked up  a nice K2 set - a K2 with internal tuner and battery, plus the remoting of the
KAT100 and KPA100 built into an EC2 enclosure.

All set up for QRP in  field/portabl/patio or full 100 watts in the shack.



But an odd thing... this all came from a very reliable ham (a techical guy of long standing circa. 1957 onward) and it was 
built according to the KK7P web page guidelines, with a printout of Lyle's pages on this from the web site.

It does NOT hear RF signals when in the paired mode with amp/tuner connected.
I have it set up as per the photos.. with DB9 cable between the I/O Aux jacks on the PA/KAT and the base K2, and antenna attaches to ANT 1 UHF jack on the PA/KAT box.

I hear RF fine if I put the antenna line on the basic K2 BNC Antenna 1 jack, but nothing heard in the full setup.

I read the pages.. it seems the K2 is to have the tuner set at CAL from what I read, but whether in CAL or in Auto.. I still get nothing heard.

I am assuming the RF somehow, somewhere passes from the K2 to the PA/KAT via this IO Aux line?

Any ideas...?

I figured it would be all ready to go.. sort of direct from his shack table onto mine, but something seems amiss.

tnx
Brien
VE3VAW