[Elecraft] KAT2 Hi Cur warning

[AE0MM]

Don,

Thanks for the info.


--mark/ae0mm

‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
On Saturday, September 29, 2018 12:19 PM, Don Wilhelm <donwilh at embarqmail.com> wrote:

> Mark,
>
> That is not abnormal.
>
> It is normal for the current required for one band to be a bit different
> than for other bands, and yours is not out of line. Yes, the KAT2 draws
> a bit more current than without it - that is true for any option.
>
> Move the CAL CUR setting up to 3.50 Amps.
>
> 73,
> Don W3FPR
>
> On 9/29/2018 12:19 PM, AE0MM wrote:
>
> > Don,
> > I've done the bridge null adjustment several times. The red c55 trimmer capacitor is very touchy. Using a ceramic screwdriver, I'm able to get the reading in the 7 to 10 range, but after a few moments, or hours, it will read 30 and sometimes up to 90 at 7100KHz into a dummy load on 5w requested power.
> > With requested power set to 10w, voltage drops from 13.5 to 12.9 when pressing tune. (atu set to calp)
> > It seems the biggest current change in current (before KAT2 vs after KAT2) is on 30m, 12m, and 10m. Is it normal for current to increase after installing KAT2? Are these numbers in harmony with what you'd expect? I don't have a watt meter, so I'm relying on the RF probe.
> > Here are the before and after measurements:
> > Band Power Current
> > 80 9.7 2.2
> > 40 9.2 2.0
> > 30 9.4 2.1
> > 20 9.7 2.1
> > 17 11 2.1
> > 15 9.3 2.0
> > 12 9.4 2.2
> > 10 9.6 2.3
> > 80 11.2 2.7
> > 40 10.8 2.3
> > 30 10.0 2.9
> > 20 10.8 2.5
> > 17 10.5 2.4
> > 15 10.4 2.5
> > 12 8.2 2.5
> > 10 8.5 2.9
> > What I'm experiencing, is it normal and expected?