[Elecraft] K3 to Yaesu Quadra Band Data 2 question

[Joe Subich, W4TV]

> 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
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