Author Topic: Repeater repairs  (Read 3475 times)

Offline WA9JOB

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Repeater repairs
« on: July 07, 2013, 11:14:20 AM »
You may be wondering just what happened to the 146.97 repeater.  It had been working just fine, it seemed.  Actually, it wasn't.  Well, the radios were fine, but the main controller, an Scom 7K model, had stopped responding to touch tone commands.  That meant we no longer had remote control of basic functions required by the FCC. 

We are required to have a means of turning the repeater off by remote control, and we weren't able to do so.  We also lost the ability to change WX warnings, or extend time out time for the Tuesday net.

After consulting with Bob Schmid WB9FBO, who manufactured the unit years ago, it was decided to follow his advice, and replace a couple of rather ancient chips, and battery backup.  This was supposed to fix the TT problem and provide more years of service.  After the necessary reset however, the TT's still didn't respond, and we had lost the id's, reset beeps and all other programming after a reboot.

The 7K was sent back to Colorado to be fixed, and I put an old 5K controller of mine into service.  It only offers Morse Code beeps for reset, and id's.  The reset is the letter A, for Alternate?  Well that was inadvertent, but will do until the 7K is returned and replaced.  The 5K has the highs rolled off too, but that will go away with the returning 7K. 

73, Nels....
Nels Harvey WA9JOB
The Jolly Ole Bootlegger

Offline WA9JOB

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Re: Repeater repairs
« Reply #1 on: July 11, 2013, 10:22:16 PM »
The temporary controller was reprogrammed, and will work fine until we get the repaired controller back from Scom.  The backup battery died ( probably 25 years old) and was replaced.  The reset A was replaced with the letter T.  The initial CW ID is now W9CQO/R.  The reset T is now 1 full second after your mic is released, and the repaired controller will go back to the .7 second interval we all are used to.

Thank you all for your patience.

73, Nels....
Nels Harvey WA9JOB
The Jolly Ole Bootlegger

Offline N9LOO

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Re: Repeater repairs
« Reply #2 on: July 11, 2013, 11:31:50 PM »
Thanks for the bringing the repeater back to life and for the update Nels.


-Sent from my iPhone using Tapatalk

Offline KC9ONY

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Re: Repeater repairs
« Reply #3 on: July 20, 2013, 02:52:01 PM »
The Scom 7K controller came back from the factory, and Nels reprogrammed it for our repeater.
Bob, at the factory, found that the onboard modem might have been hit by lightning.   Sort of
odd, since we do not have a phone line connected down there.    Since we do not have a use
for the autopatch feature, we opted to not have that modem repaired, and just disconnected
it from the main controller board.    Using the modem was only one way to program the
controller.    Nels was able to program it via one of the other ports on the back.   The touch
tone decoder is separate from the modem.

Nels and I went down to the repeater shack this morning, and adjusted some levels within
the 7K controller before actually going on air again.   Once we were back on air, we re-adjusted
the reset beep tone level, as it sounded too loud.   If you have any complaints about the
audio, CW ID, or reset beep levels, be sure to let us know.

We also found that we must have lost power for an extended amount of time recently,
as the remote receivers had changed to the default channel.   So, for example, the
Germantown receiver was not listening on the correct frequency.    This might have
accounted for some recent issues with receiving Wally, WA9KFR from West Bend.   
While we were down at the shack, we actually heard Wally calling for someone, and his
signal was much better than before.    We will have to look into getting a battery backup
system to prevent this from happening again.

In addition, we found that the control receiver was not working properly.   This might also
be related to the power issue above, but we are looking into replacing that receiver with
a spare receiver that Nels has at home.    We are still able to control the repeater via the
remote receivers, to meet FCC rules for control of a transmitter..

Again, if you are experiencing any issues with any of the club repeaters, be sure to let us know.
If you have any questions, don't hesitate to ask.

73,
Tom KC9ONY



Offline KC9ONY

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Re: Repeater repairs
« Reply #4 on: August 08, 2013, 10:18:01 PM »
The control receiver was replaced on Wed 8/07/2013.   

Thank you to Nels for his radio programming expertise!
All the remote site receivers seem to be operating properly as well.

Let us know if you experience any issues with any of the repeaters.

73,
Tom KC9ONY