"As has been mentioned - shouldn't be too difficult to do this with an external
Arduino based controller. "
My brain needed something to do while I was watching 30 m for new DX so I
created a rough draft proposal for "power per frequency bin". I created this
to stimulate discussion not
On 6/4/2020 12:36 PM, Josh Fiden wrote:
What feature(s) of KPA1500 would you want in KPA500? Sincere question. I’m not
familiar with the differences other than hardware. Built in tuner, separate
light weight switching PS, legal limit power.
The fan noise in the KPA500 is less awful than in
I don’t know, I just read that there are capabilities in the 1500 that the 500
may not have.
Chuck Jack Hawley
KE9UW
Sent from my iPhone, cjack
> On Jun 4, 2020, at 2:36 PM, Josh Fiden wrote:
>
> What feature(s) of KPA1500 would you want in KPA500? Sincere question. I’m
> not familiar
What feature(s) of KPA1500 would you want in KPA500? Sincere question. I’m not
familiar with the differences other than hardware. Built in tuner, separate
light weight switching PS, legal limit power.
With my antennas I don’t see a big enough power difference across the band with
KPA500.
So...is it possible that the KPA500 could ever be upgraded or be a KPA500A to
be as capable as the KPA1500?
I am not comfortable with having a 1500 watt amplifier and probably would have
to suffer all that noise and bother just to run a couple or few hundred watts.
That is what I love about the
"The K3 has only one way to communicate with the KPA500 and KPA1500, that being
Auxbus. There is no communications on this path that allows setting of specific
power levels in the K3 - there is only the OP/STBY that simply selects either
the K3 high power (STBY) or low power (OPER) modes. You
The K3 has only one way to communicate with the KPA500 and KPA1500, that being
Auxbus. There is no communications on this path that allows setting of specific
power levels in the K3 - there is only the OP/STBY that simply selects either
the K3 high power (STBY) or low power (OPER) modes. You
I am right there with Hank, and probably a lot of others. It's worse when
one has an external antenna switch which the KPA1500 can't sense so it's
necessary to provide low power from the K3 to avoid a fault because of the
different antenna and the tuner can provide the appropriate (already
Here's what happens to me.
I train KPA1500 ATU at center of each frequency bin across a ham band. I
transmit in one bin and KPA1500 output is say 1350 watts.. I transmit in
another bin and KPA1500 output is above 1500 watts. I have to keep
adjusting K3 power as I move around band. A bother and
Regardless of how it would have to be implemented, Hank hit the nail
squarely on the head here. As I go up and down the band (especially low
bands where the antennas are skinny and every increment of power is to be
treasured) I have to either dial back my power when the KPA ATU is working
harder,
It’s not a KPA1500 function, but rather a K3 function. And the K3 has no
concept of KPA ATU bins.
73!
Jack, W6FB
> On Jun 2, 2020, at 3:39 PM, Hank Garretson wrote:
>
> It sure would be nice if KPA1500 remembered K3 power for each frequency bin
> instead of for each band.
>
> Is there a
It sure would be nice if KPA1500 remembered K3 power for each frequency bin
instead of for each band.
Is there a menu item to make this happen? Or is it a feature request.
Contest, Cope Exuberantly,
Hank, W6SX
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