Ted,
The answer is if you want to go to some bit of trouble, yes you can use
the KAT100 in the EC2 enclosure. If you want to do it only once in a
while, then you can, but if you think you will do it frequently, you
will want another KAT100.
You will have to electrically disconnect the KPA100 in the EC2. You can
disconnect it by removing the right side panel and unplugging the ribbon
cable, the power cable and the input coax.
Disconnect the short PL-259 to PL259 coax from the KAT100 RF IN jack and
connect a longer cable from your new K2/100 to this RF IN jack.
You will have to power the KAT100 from the 2.1mm coaxial jack.
You will need to have a control cable from the K2/100 AUX IO to the DE-9
connector on the KAT100. (if you are using this connector in your
current configuration, plug it into the KPA100 - the one in the EC2
enclosure - AUX IO connector instead, it can stay there).
You will need to build a 2nd control cable as shown in the KAT100 manual
(it can have the cable to the computer too, but that is not required).
If desired, put the right side panel back on the EC2 enclosure, although
it will operate just fine with it off.
When you are finished using the KAT100 with your new K2/100, restore the
internal cables between the KPA100 and KAT100 and re-do your external
cables.
With the KPA100 on the base K2 enclosure, you will not need the KIO2 -
in fact, there will be no place to put it.
73,
Don W3FPR
On 7/26/2016 1:57 PM, Dauer, Edward wrote:
I am just about to order my second K2 – principally for the experience of
building it, but also to have an additional configuration in the station. I
have a question about using a K2/100 with an existing KAT100 already in an EC2
with another KPA100.
Specifically: I already have a K2/10 with the internal low power tuner, the
KAT2. And I have a KPA100 with a KAT100 in an EC-2 enclosure. What I am about
to order will be a K2/100, i.e. another K2 with its own internal KPA100.
There may be occasions when I will need an ATU for that soon-to-be K2/100. The
easiest option would be to build another KAT100 in the low-profile box. But to
lower the total cost I was thinking I might on those occasions use my existing
KAT100 in the EC-2. Can I do so? The problem is that the existing KAT100 is
wired into the existing KPA-100 within the EC-2. There is an 8 connector
ribbon cable, as I recall, conveying power and control data from one to the
other. That makes me wonder whether the KAT100 already tethered to its KPA100
in the EC-2 could work with an outside KPA100 in the new K2/100, without having
to open the EC-2 and undo the control line connection every time?
A second question is whether, for the same purpose, I would need a KIO2 in the
soon-to-be K2/100, assuming I can use the EC-2’s ATU with it? The KPA100 in
the new K2/100 will have its own RS232. Will that be sufficient?
Thanks for any insights anyone can offer.
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