[GCARC] Fwd: [KPA1500] KPA1500 Panic Button: Forcing a FirmwareLoad

Daniel McCormick daniel at kd2tus.com
Sat Dec 23 17:34:30 EST 2023


I have been starting to use the remote more often and was able to use the amp today to make some SSB pota contacts. Prior to today, I was unable to use the amp with SSB contacts. I was doing about 3-5W in and getting about 350W out of the amp. Fine copies all the way to 6 CA land.

Is it possible all components just need a reboot every now and again with a proper power cycle sequence? I would be happy to look into this after Christmas. I however have not been physically in the clubhouse in a year or so.

Dan
KD2TUS

On Sat, Dec 23, 2023, at 15:59, Jim n2gxj wrote:
> It is strange, but 1 hour into a session, suddenly the remote showed the
> swr. So i was like, lets turn from standby to active. Lo and behold, i got
> it to sow 300 watts out with about 8-9 watts in!
> Later, when i connected in that night i remote saw no swr and no power out,
> even in standby. But get this - with radio out at. 20w i still completed
> qso, even though remote kpa showing 0 out.
> 
> On Sat, Dec 23, 2023, 12:33 PM JOHN HILL <john.e.hill at comcast.net> wrote:
> 
> > Bad news.  The KPA1500 Panic Button / Forcing a Firmware Load does NOT
> > restore PA operation as expected.  No faults have been added to the
> > "KPA1500 FAULTS list since August.  No POWER or SWR is indicated in
> > OPERATE.  POWER is indicated STANDBY but no SWR.  Any ideas?
> >
> > > On 12/03/2023 12:09 PM EST JOHN HILL <john.e.hill at comcast.net> wrote:
> > >
> > >
> > > You may find this of interest!
> > >
> > > John W2HUV
> > >
> > > ---------- Original Message ----------
> > > From: John Hill W2HUV <john.e.hill at comcast.net>
> > > To: KPA1500 at groups.io
> > > Date: 12/02/2023 8:26 PM EST
> > > Subject: [KPA1500] KPA1500 Panic Button: Forcing a Firmware Load
> > >
> > >
> > > If you are in the middle of a contest and suddenly there is no output
> > (zero output, zero VSWR), don't panic, try the "Forcing a Firmware Load"
> > procedure on p-38 of the manual.
> > >
> > > Pressing and holding the front-panel AUX key for more than 10 seconds
> > opens the "KPA1500 Utility Program" to the "Firmware" tab, which you may
> > also do manually (necessary if you are operating remotely).  Click the
> > "Check Version Now" button.  The utility won't be able to read the current
> > version if other software is connected to the port required.  Click the
> > "Send Firmware to the KPA1500" button after the current version appears.
> > You will be notified when the firmware has been restarted.
> > >
> > > You guessed it, during the 2023 CQWW CW contest, I panicked, and was
> > without my amplifier for the remainder of the contest.  Mysteriously, the
> > amp started working again about three days later.  What could cause that?
> > I know that we have an issue with RFI in the shack. I suspect that the
> > firmware memory was contaminated by static charge.  It took three days for
> > it to return to normal.
> > > _._,_._,_
> > >
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> > >
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