[Elecraft] K3's Transmit Inihibit function (TX INH)

[W4sc]

Wayne

Adding TX Inhibit was a great feature to have.  Looking at the details 
though it seems this function is NOT available when the transverter 
interface is enabled.  This would have been a very nice feature for us guys 
wanting to an "interlock" for T/R sequencing to protect pre-amps in uwave 
setups.  Any chance XVRT-ON control being moved to the DIGOUT-1 pin, 
keeping TX-INH where it is and adding fuctionality for transverter setups 
both LP/HP??

Patiently waiting for my assembled K3.

Ben W4SC



----- Original Message ----- 
From: "Joe Subich, W4TV" <w4tv at subich.com>
To: "'Elecraft Reflector'" <elecraft at mailman.qth.net>
Cc: "'wayne burdick'" <n6kr at elecraft.com>
Sent: Friday, December 21, 2007 1:12 PM
Subject: RE: [Elecraft] K3's Transmit Inihibit function (TX INH)


>
> Wayne,
>
> Very good!  For the record the K3 ACC output be mapped to the
> Yaesu "Band data" Jack as follows:
>
> Function            K3         Yaesu
>                   DB15HD      DIN8/262
> ------------------------------------------------------
>  +13               n/a           1
>  TX Gnd             10           2
>  Ground            5,12          3
>  Band A             13           4
>  Band B              3           5
>  Band C              9           6
>  Band D             14           7
>  Inhibit/~Enable     7           8  (low to tx)
>
> Note: unless the pin 7 of the K3 ACC connector includes an internal
> pull-up, it will be necessary to provide an external pull-up (10K
> to +5V (max) source).
>
> This should be useful for the large number of accessories (both
> commercial and home built) that are compatible with the Yaesu
> "Band Data" interface.
>
> Any progress on an input that places the K3 into low power transmit
> (programmable level) for setting a RF activated remote tuner or
> amplifier/tuner like the Quadra, PW1, etc.?
>
> 73,
>
>   ... Joe, W4TV
>
>
>
>
>> -----Original Message-----
>> From: elecraft-bounces at mailman.qth.net
>> [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of wayne burdick
>> Sent: Thursday, December 20, 2007 12:40 PM
>> To: Elecraft Reflector
>> Subject: [Elecraft] K3's Transmit Inihibit function (TX INH)
>>
>>
>> Hi all,
>>
>> I've just added the TX INH function and its associated menu entry to
>> the K3. Just in case you have no clue what this is: it provides a way
>> for an external station controller to determine which of two or more
>> transceivers can have access to resources such as an amplifier. It's
>> typically used in multi-op contest situations.
>>
>> By popular demand, the TX inhibit level can be *either* active-low or
>> active-high. Thus the TX INH menu entry has three settings:
>>
>>     OFF     (no TX inhibit)
>>     LO=INH  (a logic 0 inhibits transmit)
>>     HI=INH  (a logic 1, 5 V, inhibits transmit)
>>
>> I'm testing this feature right now, and it should be in the next
>> production firmware release.
>>
>> 73,
>> Wayne
>> N6KR
>>
>> ---
>>
>> http://www.elecraft.com
>>
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>
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