Mike,
No, the KPA100 wattmeter will display the actual power being produced if
it is well calibrated.
That is not necessarily the same as the requested power, although with a
properly working KPA100 and a calibrated KPA100 wattmeter, the reading
should be the same.
73,
Don W3FPR
On 6/28/2020 9:41 PM, Mike Kopacki wrote:
I can run through some of the items you suggest. But I don’t have an
external wattmeter that can measure 100 watts. I do have a QRP wattmeter.
I will start tomorrow to try and work through the question.
But to be completely accurate...you are saying that the KPA100
wattmeter (which is what I see when pressing TUNE and DISPLAY
together), should read the same as the REQUESTED power (which is what
the power knob sets)?
Thanks,
Mike NJ2OM
On Jun 28, 2020, at 8:58 PM, Eric Norris <norrislawfi...@gmail.com>
wrote:
Congratulations, Mike! Please let us ALL know how it goes, as we of
the K2 clan learn something with every post.
73 Eric WD6DBM
On Sun, Jun 28, 2020, 2:12 PM Mike Kopacki <mikekopa...@gmail.com
<mailto:mikekopa...@gmail.com>> wrote:
Well, that gives me something to do! I’ll let you know how it goes.
Thanks,
Mike NJ2OM
> On Jun 28, 2020, at 4:41 PM, Don Wilhelm
<donw...@embarqmail.com <mailto:donw...@embarqmail.com>> wrote:
>
> Mike,
>
> Congratulations on finishing the K2/100.
>
> On the power output variation, that is not normal.
> First check the voltage delivered to the K2 while in transmit.
> You should do that by tapping DISPLAY and scrolling to the
voltage display. Your power source should provide at least 13.8
volts, but higher (up to 15 volts) is better. If the voltage
shown by the K2 display during transmit is less than 12.6, make
certain all power cable connections are tight.
>
> If the power supply voltage is not the problem, then remove the
KPA100 from the base K2 and realign the bandpass filters.
Connect a dummy load to the base K2 BNC ANT jack. After that,
check the maximum power from the base K2 - you should have at
least 10 watts on each band. Record the power for each band.
>
> Using a dummy load takes away any question about your
antennas. Always check into a dummy load - with an in-line
wattmeter if necessary.
>
> The other possibility is that you have a problem in the Low
Pass Filter in the KPA100. To check for that, re-install the
KPA100, but power the base K2 from the coaxial power jack (no
power to the KPA100 - connect the dummy load to the SO2339 jack
on the KPA100.
> Again check the maximum power on each band from the base K2.
It should be no more than 5% less than you found with the base K2
only.
> If there is a substantial difference in power, then check the
KPA100 Low Pass Filter - particularly checking the number of
turns on the toroids.
>
> 73,
> Don W3FPR
>
>
>> On 6/28/2020 4:04 PM, NJMike wrote:
>> I did notice a variation on the power output on different bands:
>> 80m - 100w
>> 40m - 100w
>> 20m - 80w
>> 15m - 50w
>> 10m - 30w
>> SWR was never above 1.3-1.
>> Does that sound normal?
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