Elecraft

K4 Remote Antenna button

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Jim AB3CV

K4 Remote Antenna button

This is mentioned in the online manual. However there's no suggestion as to
how it would interact with an external device. Obviously some code inside
the K4 would need to do some signalling, perhaps written by an approved ISV.

How would it physically transmit commands? USB, Ethernet?

I don't see many other choices.

Thanks

Jim ab3cv
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wayne burdick

Re: K4 Remote Antenna button

Administrator

> On Nov 2, 2020, at 7:51 AM, Jim Miller <[hidden email]> wrote:
>
> This is mentioned in the online manual. However there's no suggestion as to
> how it would interact with an external device. Obviously some code inside
> the K4 would need to do some signalling, perhaps written by an approved ISV.
>
> How would it physically transmit commands? USB, Ethernet?

USB, Ethernet, or RS232. There's no limit on how this could be done, but it hasn't been added yet. Do you have a particular antenna switch or other device in mind? It could also be a rotator, etc.

73,
Wayne
N6KR

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Jim AB3CV

Re: K4 Remote Antenna button

Nothing yet. I'm waiting to see what is possible.

Thanks!

jim ab3cv

On Mon, Nov 2, 2020 at 11:18 AM Wayne Burdick <[hidden email]> wrote:

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Phil Genera

Re: K4 Remote Antenna button

In reply to this post by wayne burdick

I have neither a K4 nor a loop controller from Loftur[0], but my dream is
adding an ethernet interface to the latter and controlling it from the
former.

[0]
https://sites.google.com/site/lofturj/to-automatically-tune-a-magnetic-loop-antenna

--
Phil

On Mon, Nov 2, 2020 at 11:20 AM Wayne Burdick <[hidden email]> wrote:

>
> > On Nov 2, 2020, at 7:51 AM, Jim Miller <[hidden email]> wrote:
> >
> > This is mentioned in the online manual. However there's no suggestion as
> to
> > how it would interact with an external device. Obviously some code inside
> > the K4 would need to do some signalling, perhaps written by an approved
> ISV.
> >
> > How would it physically transmit commands? USB, Ethernet?
>
>
> USB, Ethernet, or RS232. There's no limit on how this could be done, but
> it hasn't been added yet. Do you have a particular antenna switch or other
> device in mind? It could also be a rotator, etc.
>
> 73,
> Wayne
> N6KR
>
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]
>

Elecraft mailing list

Re: K4 Remote Antenna button

+1 to this.

> On Nov 2, 2020, at 2:18 PM, Phil Genera <[hidden email]> wrote:
>
> I have neither a K4 nor a loop controller from Loftur[0], but my dream is
> adding an ethernet interface to the latter and controlling it from the
> former.
>
> [0]
> https://sites.google.com/site/lofturj/to-automatically-tune-a-magnetic-loop-antenna
>
> --
> Phil
>
>
> On Mon, Nov 2, 2020 at 11:20 AM Wayne Burdick <[hidden email]> wrote:
>
>>
>>> On Nov 2, 2020, at 7:51 AM, Jim Miller <[hidden email]> wrote:
>>>
>>> This is mentioned in the online manual. However there's no suggestion as
>> to
>>> how it would interact with an external device. Obviously some code inside
>>> the K4 would need to do some signalling, perhaps written by an approved
>> ISV.
>>>
>>> How would it physically transmit commands? USB, Ethernet?
>>
>>
>> USB, Ethernet, or RS232. There's no limit on how this could be done, but
>> it hasn't been added yet. Do you have a particular antenna switch or other
>> device in mind? It could also be a rotator, etc.
>>
>> 73,
>> Wayne
>> N6KR
>>
>>
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:[hidden email]
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>> Message delivered to [hidden email]
>>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]

David Box-2

Re: K4 Remote Antenna button

In reply to this post by wayne burdick

Wayne

Just looking at the updated manuals and wanted to know about the DC
input power range limits. On page 4 of the new update its ays power of
13.8 to 14.2V preferred. I have been running my K3s with an input power
of 14.8V based on IMD tests I have done. What is the safe range for DC
input and is the 14.2V recommendation based on an IMD sweet spot or can
I leave my existing supply at 14.8V. I can adjust down to 14.2V if that
is better operating point.

Thanks for updates on docs.

de Dave K5MWR

On 11/2/2020 10:18, Wayne Burdick wrote:

>> On Nov 2, 2020, at 7:51 AM, Jim Miller <[hidden email]> wrote:
>>
>> This is mentioned in the online manual. However there's no suggestion as to
>> how it would interact with an external device. Obviously some code inside
>> the K4 would need to do some signalling, perhaps written by an approved ISV.
>>
>> How would it physically transmit commands? USB, Ethernet?
>
> USB, Ethernet, or RS232. There's no limit on how this could be done, but it hasn't been added yet. Do you have a particular antenna switch or other device in mind? It could also be a rotator, etc.
>
> 73,
> Wayne
> N6KR
>
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]
>

David Box-2

K4 Input Power

In reply to this post by wayne burdick

Wayne

Just looking at the updated manuals and wanted to know about the DC
input power range limits. On page 4 of the new update its says power of
13.8 to 14.2V preferred. I have been running my K3s with an input power
of 14.8V based on IMD tests I have done. What is the safe range for DC
input and is the 14.2V recommendation based on an IMD sweet spot or can
I leave my existing supply at 14.8V. I can adjust down to 14.2V if that
is better operating point.

Thanks for updates on docs.

de Dave K5MWR

On 11/2/2020 10:18, Wayne Burdick wrote: