Dave,
Yes, it is at 500 which is the default, and I've used it at the setting
for the past 13 years.
I tried changing it to 350 which is the minimum, and it now shows about
440W, so that seems about right for 350/500 * 873W.
But it seems there isn't enough range to pull it in to 100W, so I don't
think that is the problem.
73,
-- Dave, N8SBE
On 2023-04-07 16:39, Dave (NK7Z) wrote:
Have you looked at the calibration setting in it yet? Not sure if it
can pull it that far, but that may be what is off.
73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist, RFI
ARRL Asst. Director, NW Division, Technical Resources
On 4/7/23 11:12, Dave New, N8SBE wrote:
So, I was the guy that had a P3 display/boot problem recently.
I sent it to the mother ship for repair, and they found that (get
this) the 12V supply was shorted to the 3.3V supply (eep!).
So, a new(er) I/O board (which contains the supplies) and a
replacement blown 3.3V LCD controller later, I have an (almost) fully
functional P3 again.
EXCEPT, the TX Monitor function is now funky. It claims that my K3s
is putting out 873 (or so) watts! I've tried both sensors (I had a
200W HF sensor on the shelf since I added a KPA500 and changed to a
2KW HF sensor), and although the scale max changes on the P3 display
when I change sensors, it still way overstates my output power. The
KPA500 is showing 1360 watts on the P3!
I unplugged/re-plugged everything, did a visual inspection of the TX
Monitor adapter board under a lighted magnifying glass, looking for
missing/broken SMD resistors or caps, but so far no soap.
I'm wondering if the new revision I/O board is somehow incompatible
with the older TX Monitor board, or maybe there is a missing 1M-ohm
resistor to ground on the I/O board at the sensor connector, or an
incorrect series resistor value there.
And yes, I sent a note to support, but I haven't heard back, yet.
Wondering if anyone (Alan?) has any ideas where this behavior is
coming from. The wattmeter in both my K3s and KPA500 are working
normally. It's just the P3 wattmeter that's gone off the deep end,
now.
Thanks, and 73,
-- Dave, N8SBE
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