[Elecraft] K3 to Yaesu Quadra Band Data 2 question

[KENT TRIMBLE]

Additional Quadra information . . .

According to a phone conversation I had several years ago with Yaesu 
Support, the Quadra's INPUT 2 was intended to accommodate a six-meter 
exciter, not another HF rig.  Because of internal changes made by Yaesu 
during final design planning (literally at the last minute) to 
incorporate other applications, INPUT 2 does not support the same 
features as INPUT 1.  However, I have received emails from a few K3 
owners saying they indeed HAVE successfully used INPUT 2 with a second 
HF transceiver but none have testified to resolving the issues Joe 
alludes to below.  Neither Tom Hammond nor I pursued further INPUT 2 
issues for the simple reason that I had no interest in using it.  
Moreover, Elecraft's KPA500 was in the final development stages and I 
knew I would be using it with the K3.  To my knowledge, Yaesu has never 
addressed these INPUT 2 issues and the circuitry remains the same as 
originally designed.  If someone has information to the contrary, please 
let me know.

As for Dick's eyesight problems (join the crowd), I suggest taking a 
look at the appropriate Winford Slim Breakout Board 
(http://www.winford.com/products/brksd15.php) as an easy alternative to 
cabling.

73,

Kent  K9ZTV




On 10/10/2013 10:01 AM, Joe Subich, W4TV wrote:
>
>> I'd like to have my 2nd K3 control the Quadra via the Quadra's Band
>> Data 2 connector. I'm wondering if this is possible,
>
> Yes.  Note however, there are some issues in using two exciters -
> particularly the lack of switching for the TF (tuning) output from
> the Quadra.  There are a couple modifications on-line that add an
> external relay to provide that function.
>
> Also note that Exciter 1 (Band Data 1) and antenna 1 are automatically
> selected when the Quadra is off/bypassed.  Exciter 2 will have no
> antenna and the Inhibit line is forced high (no RF from Exciter 2).
>
>> if so, if anyone manufactures the needed cable to go between the K3's
>> accessory connector and the Quadra's Band  Data 2 jack?
>
> Not to my knowledge.  Further,  do not recall any published info on
> wiring such a cable - it was not included in N0SS's work - although
> one could derive the information from the Quadra Service Manual or
> the general interfacing documentation at VA7OJ/AB4OJ's Quadra web
> site.
>
> Yaesu offer the CT-178 Connection cable for connecting the FT3000
> to the Quadra.  One could modify that cable by replacing the DA15P
> on the exciter end with the appropriately wired DE15P.  Similarly,
> one could modify the Yaesu CT-118 cable for the FT-450/950/1200 and
> Quadra by replacing the miniDIN-10 on the transceiver end with the
> appropriately wired DE15P.
>
> 73,
>
>    ... Joe, W4TV
>

>
> On 10/10/2013 1:29 AM, RLVZ at aol.com wrote:
>> Hi Guys,
>>
>> Wondering if anyone has successfully used a K3 to control a Yaesu Quadra
>> by using the Quadra's Band Data 2 jack?  My K3's has  been controlling a
>> Quadra via the Quadra's Band Data 1 and it works  well.  But I'd like 
>> to have my
>> 2nd K3 control the  Quadra via the Quadra's Band Data 2 connector.  I'm
>> wondering if this is  possible, and if so, if anyone manufactures the 
>> needed
>> cable to go between the K3's accessory connector and the Quadra's 
>> Band Data 2
>> jack?  (I've got eye problems and cannot wire  small cables)
>>
>> Thanks & 73,
>>
>> Dick- K9OM