Dual -Watch and KRX3A sub-receiver install in a K3s

[Irwin KD3TB]

From everyone's comments, I realize that to have dual watch ( listen to two
different frequency on the same band) on my K3s, I need to install the KRX3A
sub-receiver. I have two K3s that I have built, one with the KRX3A and the
second without. I am thinking of upgrading the second one with the
sub-receiver now.

To install a KRX3A in an already built K3s do I need to remove the front
panel? I am hoping that I do not as to reinstall the front panel you have
to be very careful not to bend a pin. I realize that I have to install some
new additional stand-offs on the main RF board. I have reviewed the KRX3A
install instructions and it's a little confusing on the difference in a
older K3 versus a K3s. It appears that you have to take the front panel
totally apart?

Looking forward to see everyone at Dayton (Xenia).

Thanks, Irwin KD3TB
--
Irwin KD3TB
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[Don Wilhelm]

Irwin,

When installing the subRX, you have to remove the front panel to install
the DSP2 board.  You will have to separate the front panel from the DSP1
board to install it.

There is little danger of bending pins unless you are quite "ham-handed"
with mechanical things.  The only precaution is to be certain the
connector pins are aligned before putting them in place.  There should
be no need to force anything - if it does not go together with gentle
force, something is wrong with the alignment of the parts.

I do not believe there is any difference between the K3 and the K3s in
this regard.  Older K3s will have to remove a screw from the corner of
the RF board while newer K3s and the K3s have a notch in the DSP board
to clear that 'offending' screwhead.

73,
Don W3FPR

On 5/12/2017 8:34 AM, Irwin Darack wrote:
>
> To install a KRX3A in an already built K3s do I need to remove the front
> panel? I am hoping that I do not as to reinstall the front panel you have
> to be very careful not to bend a pin. I realize that I have to install some
> new additional stand-offs on the main RF board. I have reviewed the KRX3A
> install instructions and it's a little confusing on the difference in a
> older K3 versus a K3s. It appears that you have to take the front panel
> totally apart?
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[Nr4c]

Yes. The DSP board for the sub-rec is installed on the front panel. I too used to dread removing the panel but after the second time, it's no big deal. It is just a case of being careful when re-assembling.

Sent from my iPhone
...nr4c. bill


On May 12, 2017, at 8:34 AM, Irwin Darack <[hidden email]> wrote:

>> From everyone's comments, I realize that to have dual watch ( listen to two
> different frequency on the same band) on my K3s, I need to install the KRX3A
> sub-receiver. I have two K3s that I have built, one with the KRX3A and the
> second without. I am thinking of upgrading the second one with the
> sub-receiver now.
>
> To install a KRX3A in an already built K3s do I need to remove the front
> panel? I am hoping that I do not as to reinstall the front panel you have
> to be very careful not to bend a pin. I realize that I have to install some
> new additional stand-offs on the main RF board. I have reviewed the KRX3A
> install instructions and it's a little confusing on the difference in a
> older K3 versus a K3s. It appears that you have to take the front panel
> totally apart?
>
> Looking forward to see everyone at Dayton (Xenia).
>
> Thanks, Irwin KD3TB
> --
> Irwin KD3TB
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]

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