MCSO Noise

[chris480]

Ok im on a roll with questions lately LOL. I asked this in another thread but the thread was not really meant for this question and no one really knew why this is happening.

When listening to MCSO, you will hear a noise like someone's mic is open normally on a dispatch channel. Then after about 5 seconds of hearing what sounds like an open mic you will hear as someone else put it like the squelch is open on the channel for another 5 or so seconds. Its really annoying when you aren't expecting to hear that. Others have heard it but no one knows what it is or why it happens. Hopefully someone knows or we can figure out how to get it to stop LOL!

Thanks

[chris480]

Another thing that I just noticed as well is when I stop on a channel so I can stay with that call be it on Dispatch East or West, sometimes I hear the dispatcher responding to a unit but I never heard the unit at all but then once the dispatch responds back I hear the unit respond back.

Do I have something wrong?

I'm off of the 101 Cave Creek area and have these freqs:

859.262500
860.262500
868.912500
868.937500
857.762500
858.762500
866.775000
868.825000

I have the system as a MOT 800/900 multi site is stationary and fleet map type 2. I'm using a Pro106 with ARC500 software and importing directly from RR with my premium subscription.

Thanks

[KB7MIB]

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IIRC, the Search 8 repeater (159.090) is handled by the East dispatcher. If s/he keys up, they may be keying up on both. But unless they're patched together, you won't hear the deputy/posse member reply.

[KB7MIB]

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There may be two or more TG's handled by the same dispatcher, & you may or may not hear the deputy/posse member reply on both, depending on if/how they're patched, but you'll hear the dispatcher seemingly talking to themselves, or someone who's not there.

[KB7MIB]

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As for the squelch burst, I still don't know why it occurs.

[kb7kfc]

Im also hearing the Open Carrier after they unkey on East, West, Lakes talk groups and im useing
the Uniden 996XT and 396XT.

[Phoenix805]

Strange. Hopefully someone smarter than me will have a good answer. I've never heard what you're talking about, I get MCSO and other County stuff just fine. I have 2 separate systems programmed. I have MCSO only on White Tanks and use 868.9125 and 868.9375 for the control freqs. I get east, west, central, and Sun City West Posse talk groups.

I also have misc. County operations (jails, probation, flood control, etc.) on Downtown and use control freqs 866.775, 868.825, and 868.650. I also have the settings for Mot 800/900 and fleet map type II.

About the only difference I see is I use a GRE 500 radio. I wouldn't think that would make any difference, but who knows.

BTW, I'm near 43 Ave & Northern

[Phoenix805]

Originally Posted by KB7MIB

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There may be two or more TG's handled by the same dispatcher, & you may or may not hear the deputy/posse member reply on both, depending on if/how they're patched, but you'll hear the dispatcher seemingly talking to themselves, or someone who's not there.

Hmmm, I never really gave it any thought. I know I have heard both sides of the conversation, but never gave it any thought as to weather that's the way it always is. The other day I heard a 2 minute conversation between the dispatcher and the deputy about doing a welfare check on someone who wasn't answering his phone. Turned out he was working in the garage and never heard the home phone ring.

[KB7MIB]

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Go to the GRE Scanner forum, and look for the "PSR-600 Motorola End Code" thread. The Radio Shack PRO 106 and 197 are the same as the GRE PSR-500 and 600, and this end code issue may or may not have something to do with what you're dealing with.

[W8RMH]

Originally Posted by chris480

I have the system as a MOT 800/900 multi site is stationary and fleet map type 2.

That issue does sound like an end code problem.

Also in a Type II system you don't use a fleet map.

[Phoenix805]

This was on another thread regarding squelch settings. I thought the squelch knob only works with analog signals. Does it also work with digital, or is there somewhere else where it can be software controlled?

<quote> When set too low, if the scanner misses the end code it will hang on the channel with open-squelch noise and "bleed" over to the next comm on that voice channel. It will also take much longer for the scanner to determine the control channel for the system.

When set too high, if the control channel signal is not strong enough to break squelch, the system won't be scanned. If it is strong enough but the voice channel is not always strong enough, you'll get interrupted comms.

[KB7MIB]

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You won't (normally) hear the rush of squelch noise, but yes, it will slow down the scanning of a trunked system if the squelch setting is too low, or prevent you from hearing things if it's too high.

[optize]

The east dispatcher usually responds to lake traffic on both east and lakes. If you hear them talking to lakes but lakes not responding that's why. They respond on their own channel.