[Elecraft] KPA Aux cable

[WW2R Elecraft]

I did for a while use that signal for my transverter interface, see
http://g4fre.com/k3vhf.pdf  and http://g4fre.com/K3_PTT_sw.htm

IT got messy when I changed XVn settings, so I moved onto sniffing the
frequency in the rs232 stream and switching transverters based on that, see
http://g4fre.com/K3_RS232_sw.htm

Dave

Ww2r

Date: Tue, 21 Jan 2014 18:40:23 -0800
From: Wayne Burdick <n6kr at elecraft.com>
To: Phil Theis <phil at k3tuf.com>
Cc: "elecraft at mailman.qth.net" <elecraft at mailman.qth.net>
Subject: Re: [Elecraft] KPA Aux cable
Message-ID: <EE6EA1F0-2659-4A4D-A62C-2E61729F7563 at elecraft.com>
Content-Type: text/plain; charset=iso-8859-1

Hi Phil,

When you're using the K3's low-power transverter output (XVTR OUT), the
DIGOUT0 line changes state. We provided this to allow for external hardware
decoding of HF vs. transverters. Check page 19 and let me know if this
helps.

Wayne


On Jan 21, 2014, at 10:58 AM, Phil Theis <phil at k3tuf.com> wrote:

> Hi again Wayne,
> This does work.  My only issue is that when I'm on 40 meters my Microwave
station is on 5760MHz and so on.  I will need to do something to alert my
switching system that the radio is on HF.  You have the benefit of knowing
that inside the radio :-)
> Is there a signal I can find that would allow me to disable the rest of
the microwave system without doing frequency decoding?
> Nice amp btw,
> 73,
> Phil K3TUF
> 
> On 1/20/2014 9:14 PM, Wayne Burdick wrote:
>> OK, Phil. Let me know if this works.
>> 
>> Wayne
>> 
>> On Jan 20, 2014, at 6:01 PM, Phil Theis <phil at k3tuf.com> wrote:
>> 
>>> Wayne,
>>> I hadn't noticed that when I first set this up (years ago).  I will try,
don't see why not.  Only exception is that my 6m is TRN, but that shouldn't
matter since I won't use the KPA on 6m.
>>> Thanks,
>>> Phil K3TUF
>>> 
>>> On 1/20/2014 8:50 PM, Wayne Burdick wrote:
>>>> Phil,
>>>> 
>>>> Could use use the HF-TRN setting of the BAND outputs? (Page 19 of the
K3 owner's manual, right column, first paragraph.)
>>>> 
>>>> This setting was specifically included to handle the situation where
both HF and VHF band switching is required. Further details are provided on
this page.
>>>> 
>>>> If that doesn't work, and you really have to use the TRN setting, you
have two other band-switching options for the KPA500: its own front-panel
switches, and RF sensing.
>>>> 
>>>> 73,
>>>> Wayne
>>>> N6KR