[Elecraft] Problems with KRX3A

[Nr4c]

I think this only works if there is an ATU. 

Sent from my iPhone
...nr4c. bill


> On May 28, 2020, at 11:37 AM, Gareth M5KVK <gareth.m5kvk at gmail.com> wrote:
> 
> Thanks Mark
> Sadly, Changing the CONFIG KRX3 to be ANT=ATU makes no difference.
> 
> Gareth
> 
> On 28/05/2020, 16:08, "Mark Musick" <markmusick at outlook.com> wrote:
> 
>    HI Gareth,
>    Sorry, I sent my previous e-mail to you before seeing this one.
>    You have jogged my memory.
>    I still believe KRX3 ANT= ATU is correct, but what jogged my memory Gareth is I believe, and I'll have to check, is that if you have the ATU installed with the two antenna ports you can use the non-transmit port for a receive antenna. In other words if you have the ATU and have ANT1 selected as the transmit antenna you can select ANT2 for receive. It may be that setting is set to ANT2 when it should be ANT1. However, I believe the K3 is smart enough to know that ANT1 is the only one available when there is no ATU installed.
> 
>    73,
>    Mark, WB9CIF
> 
>    -----Original Message-----
>    From: elecraft-bounces at mailman.qth.net <elecraft-bounces at mailman.qth.net> On Behalf Of Gareth M5KVK
>    Sent: Thursday, May 28, 2020 14:53
>    To: Nr4c <nr4c at widomaker.com>
>    Cc: elecraft at mailman.qth.net
>    Subject: Re: [Elecraft] Problems with KRX3A
> 
>    Hi Bill
>    The documentation around this is a bit confusing, but my understanding is that this setting defines where the SUB gets its AUX antenna feed from. It can either be BNC (the Aux RF socket on the back panel), or (if you have the ATU installed and therefore two ANT sockets) it can get it from whichever ANT socket is not being used by MAIN. As I do not have ATU installed, the only option that works is bnc.
> 
>    I can choose either MAIN or AUX ant for the SUB by pressing RX ANT
> 
>    Does this make sense?
> 
>    Gareth, M5KVK
> 
>    On 28/05/2020, 14:03, "Nr4c" <nr4c at widomaker.com> wrote:
> 
>        Sorry!  
> 
>        KRX3 Ant=bnc does not agree with both on MAIN. 
> 
>        Sent from my iPhone
>        ...nr4c. bill
> 
> 
>> On May 28, 2020, at 8:54 AM, Gareth M5KVK <gareth.m5kvk at gmail.com> wrote:
>> 
>> I spent last evening checking the installation of the KRX3A. I did find one bit of incorrect plumbing (in the cables that connect the KRX3A to the rest of the K3S): however correcting it made no discernible difference.
>> 
>> The post-installation setup in