[Motorola] Service Monitor

[Eric Lemmon]

Don,

The way to do this is with a computer sound card.  The company will e-mail you
a sound file, probably in *.wav format.  When you play this file through your
computer's speakers, it sounds like packet data.  Set up your service monitor
to generate a carrier on one of the weather channels, and tune your receiver to
that channel.  (It's best not to do this test on the primary channel, because
the two signals may interfere with each other.)

Run a shielded cable from the mono audio output of your sound card to the
external modulation input on the service monitor.  Adjust the audio level to
get deviation in the 3-4 kHz range.  Once everything is set up, just play the
SAME code file and your receiver should respond.

The turn-off code is sent three times, so it should work.  One possible reason
why it might not work is that the repeater may be active at the time, and may
be desensing the weather receiver.  Try moving the weather radio antenna well
away and physically shielded from the repeater antenna.  A VHF preselector may
be needed if severe desensing occurs.

73, Eric Lemmon WB6FLY

Don wrote:

> Well I think I opened My mouth and ask A question , Now I  Think I got a
> Good Answer , Now I have No idea How to Do this ? Now that I Got Everyone
> attention With This confusing statement,  Let Me try and Explain the
> problem,  I have A Weather Alert Receiver on My 440 Repeater , Activates
> When it gets the Programmed Weather Alerts and Also Every Wednesday  11:00
> --12:00 Chicago Time, And this is the only time I can test it To See if it
> Will Turn ON And Most importantly Turn OFF The Repeater.  Last Wednesday It
> Activated the Test Signal but it did not Turn OFF. and A Repeater Control
> Op turned it off. Now not Wanting to wait Until a Weather Alert or A Week
> to see if it Would work . I just E-Mailed The Company that Made the unit
> and Explained the Problem , and Told them that I had access to A Motorola
> 2001 Service Monitor, And would their  Be A Way for Me to Send the Turn On
> and Off signal and Alerts? Well He Was Very Help full and Stated He Would
> E-Mail me Some Test Wav Files for Me to feed into the Service Monitor,  And
> Test the Receiver Wow that is Great News,  But for One thing ? How Do I Do
> This ? Any Help other the Recommending Psychiatric help ,  Will be Greatly
> Appreciated
>
>                                Thanks Don KA9QJG
>
> Wish Motorola Equipment Liked Me
>
> As much As I like it.
>
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