[1000mp] Strange bahaviour on 80 meters
Bernd Bracher
[email protected]
Fri, 26 Dec 2003 05:12:09 -0000
hallo
on my mp was the same problem
but only on a smal part of 20m..
the memory of the tuner was full
make a master - reset
see this
I was using the antenna tuner on 15m and noticed that the tuner did not tune
anymore. Actually when I press tuner- button, the "tuner" and the "wait"
light was on, hen I press tune-button and nothing happened exept swr in the
mp-meter was 3.0:1, but it did not tune at all. I check other bands 40-10m,
where I have antennas
and all has the same thing, swr was even more than on 15m and tuner did not
work at all. So I took power down from the front panel, I took power down
from the separate power supply and wait, thinkin at the same, that what the
heck I made wrong. After a while, less than a minute, I heard tiny "klik...
klik" sound, maybe two of them. I decided to put power back on and
everything seemed to be normal again, it does tune on every band properly.
So I do not know what happened, but time made the trick this time. I did not
"reset", nor "boot" my mp. I wonder, what was it? Normal? or just maybe
overheating. Does someone else had the same problem? I remember tuner
troubles wroute before here on reflector, was mine the same thing and does
it have a cure, or should it be cured?
73's & DX de Tor / OH2BV
I have experienced two inexplicable incidents recently in which after I
switched bands, the SWR maxed out with or without the tuner in line. The
only way I have been able to correct the high SWR condition is to turn the
power off and then on. This is the first time I have observed this behavior
in three years.
73 Joe
Solutions/Comments:
It's because you exceeded the 39 memory channels allocated to the antenna
tuner. There has been much said about this. Search through the archives,
there is a ton of information on this subject. John Winward, K3AOT
Press SUB/CE and ENT together while powering up. The will reset the tuner
memories (and all other memories). It will not reset the menu settings.
You do not have to run TUNE for the antenna tuner every time you change
bands. It remembers tuner settings 39 times. It is suggested that you use
TUNE only two times for each band -- once for the low end (CW) and once for
the high end (SSB). The tuner does a good job of tracking between these two
memorized settings. If you do this, you will never fill up the 39 tuner
memories again.
73, de Earl, K6SE
73 de bernd dl8scg
----- Original Message -----
From: <[email protected]>
To: <[email protected]>
Cc: <[email protected]>; <[email protected]>
Sent: Thursday, December 25, 2003 10:30 PM
Subject: Re: [1000mp] Strange bahaviour on 80 meters
> Thanks for the reply. Given some of the other things we
> have seen, that will probably have an effect, but isn't that
> dealing with symptomes rather than the real problem?
>
> cheers, Paul - VA7NT
>
> On Thu, 25 Dec 2003 13:45:07 -0800 [email protected] wrote:
> > Has he tried changing the length of the cable between rig and amp?
> >
> > -----Original Message-----
> > From: [email protected]
> > [mailto:[email protected]]On Behalf Of [email protected]
> > Sent: Thursday, December 25, 2003 12:19 PM
> > To: [email protected]
> > Cc: [email protected]; [email protected]
> > Subject: [1000mp] Strange bahaviour on 80 meters
> >
> >
> > A friend has recently aquired a 1000mp, and in the process of
> > setting it up, we discovered that for some reason it has trouble
> > driving his Alpha 86 on 80 meters. The internal metering indicates
> > a high swr in the cw portion of that band, this resulting in a
> > power fold back. The tuner can be used to compensate however, I don't
> > think that this is dealing with the problem. Initially we thought
> > the problem might be with the input circuit of the 86, but with
> > another swr bridge in the line between the rig and the amp, the
> > bridge shows a flat swr when the rig "tuned" with the antenna
> > tuner. If the problem were with the input circuit one would expect
> > the amp input swr to remain constant even though the rig could
> > be fooled into full output by using the tuner. I suspect that
> > the MP is putting out out of band energy in 80 meters, thus giving
> > the poor swr indication. This is further confirmed by placing
> > an ICE 80 meter bandpass filter between rig and the amp.
> >
> > Other rigs in the shack have no difficulty driving the 86 and
> > do not give the same high swr indication.
> >
> > Am I on the right track here, or am I missing something?
> >
> > Has anyone else encountered this, and if so what must be done
> > to fix it?
> >
> > Thanks in advance.
> >
> > cheers, Paul - VA7NT ex VE7CQK - email: [email protected]
> > "Those who hear not the music. . . think the dancers mad."
> > _______________________________________________
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>
> cheers, Paul - VA7NT ex VE7CQK - email: [email protected]
> "Those who hear not the music. . . think the dancers mad."
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