[Elecraft] KRC2ACC with K3 and Navigator an P3

[Brian F. Wruble]

Don, does the "Y" connector Elecraft sells work for this?  I have on order
a KAT500 and a KPA500.  I can't quite figure out what the KPAK3AUX does,
but will that address the problem?

Here is the long-term plan.  I want to operate this station (in Maryland)
remotely from our home in Key West.  I will get a K3/0  when the mini comes
out, and the RemoteRig gear.  I will not need the P3 hooked up for that, so
maybe that frees up the needed pathway.  But while I am in MD, I do need
the P3.  I want the KRC2 only for antenna switching.  However, the audible
feedback was the way I was going to be sure the antennas actually switched
--- by monitoring the station remotely (including the readout of the rotor)
using a webcam and mike.  .  If that is the only reason to keep a PC
running, I can give that up.  Of course, I can probably give up the
Navigator (only when operating remotely) if I am getting audio in/out using
RemoteRig.

So my questions are:

Other than the audible cues, what do I give up by loading the KRC2 firmware
vice the KRCACC firmware?  I really only must have antenna switching.

Will the Y cable from Elecraft work with a KRC2 (not ACC) and a P3 and a
Navigator?

What does the KPAK3AUX do for my eventual station (full remotely controlled
K-Line)?  Does the Y cable that comes with that fit my needs?

Thanks so much for your help.

73 de Brian W3BW










*Brian F. Wruble, C.F.A.

*70 is the new 40.*
*
Mail: 1107 Key Plaza, PMB 447 Key West, FL 33040-4077
Summers: P.O.Box 57, 7400 Augustine Herman Highway, Georgetown, MD 21930
eFax  305.768.0278







On Mon, Jun 24, 2013 at 12:01 AM, Don Wilhelm <w3fpr at embarqmail.com> wrote:

> Brian,
>
> The recommended K3 to KRC2 communication is to use the AUXBUS signalling
> for band signalling.  The AUXBUS signal is on pin 2 of the K3 ACC connector
> with the return path at pin 5 (ground).  You can get a "Y" connector to
> bring the ACC signals out to both the Navigator and the KRC2ACC.  Make
> certain the "Y" cable has all pins connected and no pins connected together
> - a VGA "Y" cable will NOT work.
>
> Please not that the solution above will only provide band selection in the
> KRC2ACC - other functions will not work.
>
> One cannot use a "Y" connector on the RS-232 signals unless one device
> only listens to the RS-232 data traffic.  Both the P3 and the KRC2ACC have
> drivers on the RS-232 connection and that will cause much chaos and failure
> of communications for both the KRC2ACC and the P3.
>
> In other words, I do not have a workable solution for you.  Perhaps Jack
> Brindle can make some suggestions, but from my knowledge of the RS-232
> signalling, they will not work together.
>
> My suggestion is to load the KRC2 firmware and forget about the ACC
> option, then you can use the KRC2 for control of your antenna relays with
> the connection to the K3 ACC connector (with the "Y" cable).
>
> 73,
> Don W3FPR
>
>
> On 6/23/2013 4:44 PM, Brian F. Wruble wrote:
>
>> Hi all,
>>
>> OK, I have built my KRC2ACC, and it passes all the tests. I have built the
>> special cable for use with my K3.  Now  am stumped again, so I am hoping
>> someone can "baby-talk" me through this.
>>
>> I use a Navigator interface for digital modes.  That occupies the ACC jack
>> of the K3.  I use a P3 Panadaptor, and that occupies the serial (RS232)
>> port of the K3.  The Navigator uses the RS232 port of the P3.  There is no
>> place left to connect the KRC2ACC.
>>
>> The manual makes reference to "daisy-chaining", but always in connection
>> with the K2, not the K3.  So I am stuck again.
>>
>> Where do I plug it in, and what jumpers do I set?
>>
>> Thanks in advance,
>>
>> Brian W3BW
>>
>>
>>
>>
>> *Brian F. Wruble, C.F.A.
>>
>> *70 is the new 40.*
>> *
>> Mail: 1107 Key Plaza, PMB 447 Key West, FL 33040-4077
>> Summers: P.O.Box 57, 7400 Augustine Herman Highway, Georgetown, MD 21930
>> eFax  305.768.0278
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>