Re: [Elecraft] Using T1 with KX2 or KX3

[Heinz Bärtschi]

Indeed, that has been done (also by me) and works fine. 
http://www.jtmiller.com/t1_tuner_project.html
The only drawback by the insertion of a bias tee could be that the path for 
discharging static charges on the antenna is interrupted.

73, Heinz HB9BCB


> Am 15.11.2017 um 19:42 schrieb Steve Sergeant :
> 
> Hmmm. That means that it should be trivial to make a DC-blocking circuit
> that would allow you to pull the ring of J3 to DC (and not RF) ground
> over the coax to initiate tuning. Then you would have part of the remote
> control puzzle solved.
> 
> That's nearly enough to finally get me to buy a T1.
> 
> 
>> On 11/15/17 10:29 AM, Dave Fugleberg wrote:
>> Understood.
>> The T1 manual indicates that you can manually initiate tuning remotely by
>> pulling the ring of J3 to ground, so running an extra control line from the
>> operating position to the remote T1 could work.
>> It also details the protocol for sending band info to the T1 to recall the
>> previous tuner settings on a per band basis. The special cable for the
>> FT-817 uses this.
>> The KX2 can be configured to send the current band out its serial port as a
>> CAT command. I imagine one could build a device using an Arduino or similar
>> to grab that CAT band data and send it to the T1 when requested Might
>> be a fun project for someday. So many project ideas, so little time...
>> 73 de W0ZF
>>> On Wed, Nov 15, 2017 at 8:11 AM Barry N1EU  wrote:
>>> 
>>> Yes, different use case.  All my KX's have the internal tuner.  But I was
>>> thinking of an antenna configuration which would benefit from having a T1
>>> mounted away from the operating position.
>>> 
>>> 73, Barry N1EU
>>> 
>>> On Wed, Nov 15, 2017 at 9:00 AM, Dave Fugleberg 
>>> wrote:
>>> 
 Barry, I went through that thought exercise before I ordered my KX2,
>>> since
 I already own a T1. In the end I ordered the internal tuner with the
>>> KX2. I
 have not regretted it for a minute. No extra cables, batteries, or fuss.
 And it works very well.
 Since you're concerned about remoting the tuner, your use case might be
 different than mine, but for a grab and go portable radio, the internal
 tuner is the way to go.
 On Wed, Nov 15, 2017 at 5:02 AM Heinz Bärtschi <
>>> heinz.baerts...@bluewin.ch>
 wrote:
 
> It is correct understood, Barry.
> 
> 73, Heinz HB9BCB
> 
> 
> 
>> Am 15.11.2017 um 11:44 schrieb Barry N1EU :
>> 
>> I'm looking for confirmation on how I understand the T1 would work
>>> with
> my
>> KX2 or KX3.  When I change bands, I will need to go through a manual
>> re-tune process.  The memories in the T1 won't automatically recall a
>> setting based on the newly transmitted frequency.  In the case of the
> KX2
>> or KX3, I understand that the memories may speed up the re-tune
>>> process
> but
>> it will still require me pressing the Tune button manually and I
> wouldn't
>> be able to mount the T1 remote to the operating position.  The T1 will
> only
>> do an automatic recall of settings without a manual re-tune when used
> with
>> an FT817 with the special interface cable.  A special interface cable
>>> is
>> NOT available for the KX2 or KX3.
>> 
>> Do I have this right?
>> 
>> Thanks & 73,
>> Barry N1EU
> __
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Re: [Elecraft] Using T1 with KX2 or KX3

[Steve Sergeant]

Hmmm. That means that it should be trivial to make a DC-blocking circuit
that would allow you to pull the ring of J3 to DC (and not RF) ground
over the coax to initiate tuning. Then you would have part of the remote
control puzzle solved.

That's nearly enough to finally get me to buy a T1.


On 11/15/17 10:29 AM, Dave Fugleberg wrote:
> Understood.
> The T1 manual indicates that you can manually initiate tuning remotely by
> pulling the ring of J3 to ground, so running an extra control line from the
> operating position to the remote T1 could work.
> It also details the protocol for sending band info to the T1 to recall the
> previous tuner settings on a per band basis. The special cable for the
> FT-817 uses this.
> The KX2 can be configured to send the current band out its serial port as a
> CAT command. I imagine one could build a device using an Arduino or similar
> to grab that CAT band data and send it to the T1 when requested Might
> be a fun project for someday. So many project ideas, so little time...
> 73 de W0ZF
> On Wed, Nov 15, 2017 at 8:11 AM Barry N1EU  wrote:
> 
>> Yes, different use case.  All my KX's have the internal tuner.  But I was
>> thinking of an antenna configuration which would benefit from having a T1
>> mounted away from the operating position.
>>
>> 73, Barry N1EU
>>
>> On Wed, Nov 15, 2017 at 9:00 AM, Dave Fugleberg 
>> wrote:
>>
>>> Barry, I went through that thought exercise before I ordered my KX2,
>> since
>>> I already own a T1. In the end I ordered the internal tuner with the
>> KX2. I
>>> have not regretted it for a minute. No extra cables, batteries, or fuss.
>>> And it works very well.
>>> Since you're concerned about remoting the tuner, your use case might be
>>> different than mine, but for a grab and go portable radio, the internal
>>> tuner is the way to go.
>>> On Wed, Nov 15, 2017 at 5:02 AM Heinz Bärtschi <
>> heinz.baerts...@bluewin.ch>
>>> wrote:
>>>
 It is correct understood, Barry.

 73, Heinz HB9BCB



> Am 15.11.2017 um 11:44 schrieb Barry N1EU :
>
> I'm looking for confirmation on how I understand the T1 would work
>> with
 my
> KX2 or KX3.  When I change bands, I will need to go through a manual
> re-tune process.  The memories in the T1 won't automatically recall a
> setting based on the newly transmitted frequency.  In the case of the
 KX2
> or KX3, I understand that the memories may speed up the re-tune
>> process
 but
> it will still require me pressing the Tune button manually and I
 wouldn't
> be able to mount the T1 remote to the operating position.  The T1 will
 only
> do an automatic recall of settings without a manual re-tune when used
 with
> an FT817 with the special interface cable.  A special interface cable
>> is
> NOT available for the KX2 or KX3.
>
> Do I have this right?
>
> Thanks & 73,
> Barry N1EU
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Re: [Elecraft] Using T1 with KX2 or KX3

[Dave Fugleberg]

Understood.
The T1 manual indicates that you can manually initiate tuning remotely by
pulling the ring of J3 to ground, so running an extra control line from the
operating position to the remote T1 could work.
It also details the protocol for sending band info to the T1 to recall the
previous tuner settings on a per band basis. The special cable for the
FT-817 uses this.
The KX2 can be configured to send the current band out its serial port as a
CAT command. I imagine one could build a device using an Arduino or similar
to grab that CAT band data and send it to the T1 when requested Might
be a fun project for someday. So many project ideas, so little time...
73 de W0ZF
On Wed, Nov 15, 2017 at 8:11 AM Barry N1EU  wrote:

> Yes, different use case.  All my KX's have the internal tuner.  But I was
> thinking of an antenna configuration which would benefit from having a T1
> mounted away from the operating position.
>
> 73, Barry N1EU
>
> On Wed, Nov 15, 2017 at 9:00 AM, Dave Fugleberg 
> wrote:
>
> > Barry, I went through that thought exercise before I ordered my KX2,
> since
> > I already own a T1. In the end I ordered the internal tuner with the
> KX2. I
> > have not regretted it for a minute. No extra cables, batteries, or fuss.
> > And it works very well.
> > Since you're concerned about remoting the tuner, your use case might be
> > different than mine, but for a grab and go portable radio, the internal
> > tuner is the way to go.
> > On Wed, Nov 15, 2017 at 5:02 AM Heinz Bärtschi <
> heinz.baerts...@bluewin.ch>
> > wrote:
> >
> >> It is correct understood, Barry.
> >>
> >> 73, Heinz HB9BCB
> >>
> >>
> >>
> >> > Am 15.11.2017 um 11:44 schrieb Barry N1EU :
> >> >
> >> > I'm looking for confirmation on how I understand the T1 would work
> with
> >> my
> >> > KX2 or KX3.  When I change bands, I will need to go through a manual
> >> > re-tune process.  The memories in the T1 won't automatically recall a
> >> > setting based on the newly transmitted frequency.  In the case of the
> >> KX2
> >> > or KX3, I understand that the memories may speed up the re-tune
> process
> >> but
> >> > it will still require me pressing the Tune button manually and I
> >> wouldn't
> >> > be able to mount the T1 remote to the operating position.  The T1 will
> >> only
> >> > do an automatic recall of settings without a manual re-tune when used
> >> with
> >> > an FT817 with the special interface cable.  A special interface cable
> is
> >> > NOT available for the KX2 or KX3.
> >> >
> >> > Do I have this right?
> >> >
> >> > Thanks & 73,
> >> > Barry N1EU
> >> >
> >> __
> >> Elecraft mailing list
> >> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> >> Help: http://mailman.qth.net/mmfaq.htm
> >> Post: mailto:Elecraft@mailman.qth.net
> >>
> >> This list hosted by: http://www.qsl.net
> >> Please help support this email list: http://www.qsl.net/donate.html
> >> Message delivered to dave.w...@gmail.com
> >>
> >
> __
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Re: [Elecraft] Using T1 with KX2 or KX3

[Barry N1EU]

Yes, different use case.  All my KX's have the internal tuner.  But I was
thinking of an antenna configuration which would benefit from having a T1
mounted away from the operating position.

73, Barry N1EU

On Wed, Nov 15, 2017 at 9:00 AM, Dave Fugleberg  wrote:

> Barry, I went through that thought exercise before I ordered my KX2, since
> I already own a T1. In the end I ordered the internal tuner with the KX2. I
> have not regretted it for a minute. No extra cables, batteries, or fuss.
> And it works very well.
> Since you're concerned about remoting the tuner, your use case might be
> different than mine, but for a grab and go portable radio, the internal
> tuner is the way to go.
> On Wed, Nov 15, 2017 at 5:02 AM Heinz Bärtschi 
> wrote:
>
>> It is correct understood, Barry.
>>
>> 73, Heinz HB9BCB
>>
>>
>>
>> > Am 15.11.2017 um 11:44 schrieb Barry N1EU :
>> >
>> > I'm looking for confirmation on how I understand the T1 would work with
>> my
>> > KX2 or KX3.  When I change bands, I will need to go through a manual
>> > re-tune process.  The memories in the T1 won't automatically recall a
>> > setting based on the newly transmitted frequency.  In the case of the
>> KX2
>> > or KX3, I understand that the memories may speed up the re-tune process
>> but
>> > it will still require me pressing the Tune button manually and I
>> wouldn't
>> > be able to mount the T1 remote to the operating position.  The T1 will
>> only
>> > do an automatic recall of settings without a manual re-tune when used
>> with
>> > an FT817 with the special interface cable.  A special interface cable is
>> > NOT available for the KX2 or KX3.
>> >
>> > Do I have this right?
>> >
>> > Thanks & 73,
>> > Barry N1EU
>> >
>> __
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:Elecraft@mailman.qth.net
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>> Message delivered to dave.w...@gmail.com
>>
>
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Re: [Elecraft] Using T1 with KX2 or KX3

[Dave Fugleberg]

Barry, I went through that thought exercise before I ordered my KX2, since
I already own a T1. In the end I ordered the internal tuner with the KX2. I
have not regretted it for a minute. No extra cables, batteries, or fuss.
And it works very well.
Since you're concerned about remoting the tuner, your use case might be
different than mine, but for a grab and go portable radio, the internal
tuner is the way to go.
On Wed, Nov 15, 2017 at 5:02 AM Heinz Bärtschi 
wrote:

> It is correct understood, Barry.
>
> 73, Heinz HB9BCB
>
>
>
> > Am 15.11.2017 um 11:44 schrieb Barry N1EU :
> >
> > I'm looking for confirmation on how I understand the T1 would work with
> my
> > KX2 or KX3.  When I change bands, I will need to go through a manual
> > re-tune process.  The memories in the T1 won't automatically recall a
> > setting based on the newly transmitted frequency.  In the case of the KX2
> > or KX3, I understand that the memories may speed up the re-tune process
> but
> > it will still require me pressing the Tune button manually and I wouldn't
> > be able to mount the T1 remote to the operating position.  The T1 will
> only
> > do an automatic recall of settings without a manual re-tune when used
> with
> > an FT817 with the special interface cable.  A special interface cable is
> > NOT available for the KX2 or KX3.
> >
> > Do I have this right?
> >
> > Thanks & 73,
> > Barry N1EU
> >
> __
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>
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Re: [Elecraft] Using T1 with KX2 or KX3

[Heinz Bärtschi]

It is correct understood, Barry.

73, Heinz HB9BCB



> Am 15.11.2017 um 11:44 schrieb Barry N1EU :
> 
> I'm looking for confirmation on how I understand the T1 would work with my
> KX2 or KX3.  When I change bands, I will need to go through a manual
> re-tune process.  The memories in the T1 won't automatically recall a
> setting based on the newly transmitted frequency.  In the case of the KX2
> or KX3, I understand that the memories may speed up the re-tune process but
> it will still require me pressing the Tune button manually and I wouldn't
> be able to mount the T1 remote to the operating position.  The T1 will only
> do an automatic recall of settings without a manual re-tune when used with
> an FT817 with the special interface cable.  A special interface cable is
> NOT available for the KX2 or KX3.
> 
> Do I have this right?
> 
> Thanks & 73,
> Barry N1EU
> 
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