Check the supply voltage under load, Tim. I had a problem with
mine caused by a bad external fuseholder (high resistance)
between the rig and the external power supply I was using. The
rig was fine on receive when the current was low, but the extra
voltage drop from the resistive fuseholder would cause the
power supply voltage to droop under the TX current load. Below
some supply voltage threshold (I think around 10volts DC input),
the Paragon would "whig out" similar to what you describe.
Since I replaced the fuseholder (about 10 years ago), the
problem hasn't re-occured.
Hope this helps.
73 de Mike, W4EF........................
----- Original Message -----
From: "Tim & Darlene Isom" <nannypoo@mnmars.org>
To: <tentec@contesting.com>
Sent: Sunday, September 26, 2004 8:29 PM
Subject: [TenTec] Paragon behavior
> I am a sysop for a MARS PACTOR switch. We are using Paragons for
> the switch operation and I am wondering if anyone has seen the
> following behavior and if so what is the problem and perhaps the cure.
>
> On Saturday, 25 September, I had to check our PACTOR switch
> because no one was able to log into the switch to get traffic. I
> initially found the Paragon working but the audio was just a loud
> buzz and when the tuning dial was turned the display remained on
> the same frequency even though I was moving the tuner. I did a
> hard reset of the rig and things seemed to be cured.
>
> Today, 26 September, I had to again check the switch due to the
> same problem. I turned the rig off and on (without a reset) and
> things were fine, I then had another operator connect to the
> switch - as traffic was being downloaded by the remote operator
> the switch was functioning but then stopped - the TNC (a PK232MBX)
> had the send light lock on, however the rig was no longer
> transmitting, my loud noise was back and the display was blank. I
> do not believe the problem is with the TNC - I believe the issue
> is related to the radio.
>
> Any help would be appreciated.
>
> Tim Isom WD9HDQ/NNN0XEE
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>
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