[Elecraft] K3 Auto antenna switching

[Joe Subich, W4TV]

The only "official" use right now is for turning the PR-6 on/off on
six meters.

73,

    ... Joe, W4TV


On 8/25/2011 2:02 PM, Guy Olinger K2AV wrote:
> Joe&  Fred,
>
> Hmm, I was somehow under the impression that was "needed for something", but
> reading it all again from scratch, that is the digout0 which apparently only
> works in relation to some transverter function.  Thanks all for the info.
>   73, Guy.
>
> On Thu, Aug 25, 2011 at 10:57 AM, Cady, Fred<fcady at ece.montana.edu>  wrote:
>
>> Hi Guy and all,
>> You could "kind of" do this with the DIGOUT1 signal from the ACC connector.
>> It can be programmed OFF (floating, open-drain output, you need a pull up if
>> you want a high) or ON (pulled down to ground).
>> The Elecraft Owner's manual describes it on page 55 and here is what the
>> KE7X K3 book says:
>> (Figure 7 16.) This output signal is a general-purpose, open-drain output
>> that may be programmed (OFF = floating, ON = pulled down to ground) on a
>> per-band and a per-antenna basis (if the KAT3 ATU is installed). For
>> example, you might use this feature to turn on the PR6 six meter preamp only
>> when the six meter band and the six meter antenna are selected. To program
>> DIGOUT1, tune the K3 Main receiver to the desired band with the selected
>> antenna and go to CONFIG:DIGOUT1 and set it to ON. The maximum sinking
>> current is 250 mA and the maximum load voltage is 25 VDC.
>>
>> So, "kind of" means you could program DIGOUT1 to be ON (pulled low) when
>> you are on 80 and have ANT2 (for example) selected. For any other
>> combination of band/ant DIGOUT1 would be floating (or pulled up). This would
>> work if you are using an external band decoder to select antennas and you
>> simply want to activate another switch or relay to switch in one of two 80
>> meter antennas.
>>
>> Cheers and 73,
>> Fred KE7X
>>
>>
>> Fred Cady
>> fcady at ieee dot org
>> "The Elecraft K3: Design, Configuration, and Operation"
>> www.ke7x.com
>>
>>> -----Original Message-----
>>> From: elecraft-bounces at mailman.qth.net [mailto:elecraft-
>>> bounces at mailman.qth.net] On Behalf Of Guy Olinger K2AV
>>> Sent: Thursday, August 25, 2011 2:05 AM
>>> To: Oliver Dröse
>>> Cc: elecraft at mailman.qth.net; DBellW6AQ at aol.com; K6YR at aol.com
>>> Subject: Re: [Elecraft] K3 Auto antenna switching
>>>
>>> I would really like an external signal that tells whether ANT1 or ANT2
>>> is
>>> selected.  Any way to do that?  73, Guy
>>>
>>> On Wed, Aug 24, 2011 at 7:28 PM, Oliver Dröse<droese at necg.de>  wrote:
>>>
>>>> Hi Dave,
>>>>
>>>> unfortunately not, it's just one BCD code per band.
>>>>
>>>> 73, Olli - DH8BQA
>>>>
>>>>
>>>>
>>>> ----- Original Message -----
>>>> From:<DBellW6AQ at aol.com>
>>>> To:<elecraft at mailman.qth.net>
>>>> Cc:<K6YR at aol.com>
>>>> Sent: Wednesday, August 24, 2011 8:29 PM
>>>> Subject: [Elecraft] K3 Auto antenna switching
>>>>
>>>>
>>>>> I have two 80 meter  antennas.  Is it possible to program the band
>>> data
>>>>> output on the K3 for 80  meters # 1 and # 2?  I couldn't find an
>>> answer
>>>> to
>>>>> this
>>>>> in the  manual.
>>>>>
>>>>> 73,  Dave
>>>>
>>>> ______________________________________________________________
>>>> Elecraft mailing list
>>>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>>>> Help: http://mailman.qth.net/mmfaq.htm
>>>> Post: mailto:Elecraft at mailman.qth.net
>>>>
>>>> This list hosted by: http://www.qsl.net
>>>> Please help support this email list: http://www.qsl.net/donate.html
>>>>
>>> ______________________________________________________________
>>> Elecraft mailing list
>>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>>> Help: http://mailman.qth.net/mmfaq.htm
>>> Post: mailto:Elecraft at mailman.qth.net
>>>
>>> This list hosted by: http://www.qsl.net
>>> Please help support this email list: http://www.qsl.net/donate.html
>>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>