[Elecraft] Externmal ATU

[Jack Brabham]

  Bill,

I ran into this problem a few months back and swapped several emails 
with Wayne about it.

Currently there is no specific support for external tuners from the K3, 
so the method you are using is the only possibility.

I did some research on external auto-tuner protocols for Wayne and my 
understanding of the ensuing discussion was that Wayne was going to 
implement Kenwood AT-300 hardware handshake protocol in the K3.  This is 
a the common Kenwood 2 wire/2 way interface and allows for tuner 
initiated auto tune sequences as well as enabling the K3 TUNE button to 
function normally with an external autotuner.

The initial estimate for availability was a couple of months ago.   I 
have no idea where this is currently on the "enhancement list" for the 
K3 but I'm still looking for it, and hopefully soon.

73 Jack KZ5A



On 8/24/2010 10:05 AM, Lyle Johnson wrote:
>    The K3's ATU function is handled within the MCU.  It is an internal
> logic state, not a physically accessible signal, that actuates the ATU.
>
> 73,
>
> Lyle KK7P
>
>>> ...I am looking for a way to access the signal from the K3
>>> that tells the ATU to TUNE.
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