[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 <stevesgt at effable.com>:
> 
> 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 <n1eu.barry at gmail.com> 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 <dave.w0zf at gmail.com>
>>> 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.baertschi at bluewin.ch>
>>>> wrote:
>>>> 
>>>>> It is correct understood, Barry.
>>>>> 
>>>>> 73, Heinz HB9BCB
>>>>> 
>>>>> 
>>>>> 
>>>>>> Am 15.11.2017 um 11:44 schrieb Barry N1EU <n1eu.barry at gmail.com>:
>>>>>> 
>>>>>> 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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