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Old 03-01-2009, 4:16 PM
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Default UMass Amherst PD

I have umpd in my scanner. it is annoying because it seems like 20 seconds it sounds like a mic is key'd up for less than a second. Is there anyway to program arc330 to wait for a longer transmission? or does anyone know what it is?
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Old 03-02-2009, 11:19 AM
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UMA is an LTR you need to program the Radio for LTR Trunking with the channels in Logical Order. What you hear is the system polling.

Nothing new has been submitted since early 2008
so any changes from the RR DB would be great.

I would suggest reading the WIKI on LTR and it will help you deceipher
the info, to post to the RR DB with some valid updates.

Logic Trunked Radio - The RadioReference Wiki


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I have umpd in my scanner. it is annoying because it seems like 20 seconds it sounds like a mic is key'd up for less than a second. Is there anyway to program arc330 to wait for a longer transmission? or does anyone know what it is?
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Old 03-02-2009, 12:36 PM
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so what is system polling
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Old 03-02-2009, 12:49 PM
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Typically on LTR systems, each of these controllers periodically sends out a data burst (approximately every 10 seconds on LTR Standard systems) so that the subscriber units know that the system is there. The idle data burst can be turned off if desired by the system operator. Some systems will broadcast idle data bursts only on channels used as home channels and not on those used for "overflow" conversations. To a scanner user the idle data burst will sound like a short blip of static like someone keyed up and unkeyed a radio within about 1/2 second. This data burst is not sent at the same time by all the channels but happen randomly throughout all the system channels.

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so what is system polling
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Old 03-02-2009, 1:16 PM
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Originally Posted by ecps92 View Post
Typically on LTR systems, each of these controllers periodically sends out a data burst (approximately every 10 seconds on LTR Standard systems) so that the subscriber units know that the system is there. The idle data burst can be turned off if desired by the system operator. Some systems will broadcast idle data bursts only on channels used as home channels and not on those used for "overflow" conversations. To a scanner user the idle data burst will sound like a short blip of static like someone keyed up and unkeyed a radio within about 1/2 second. This data burst is not sent at the same time by all the channels but happen randomly throughout all the system channels.
so is it possible to block that out on a scanner?
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Old 03-02-2009, 1:53 PM
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Yes, by setting your Scanner up in Trunked Mode for an LTR Trunk.

What model scanner? Have you read the Wiki link, yet?

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so is it possible to block that out on a scanner?
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Old 03-02-2009, 1:55 PM
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its a BR330T scanner
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Old 03-02-2009, 2:16 PM
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BR330T - The RadioReference Wiki

Your Radio can handle LTR trunking, take some time to read the manual
for entering Trunked Frequencies. Remember on LTR you need to put the frequencies in Logical Order.

Logic Trunked Radio - The RadioReference Wiki

Also, please update your profile to indicate a location

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its a BR330T scanner
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Old 03-20-2009, 1:09 AM
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Also, please update your profile to indicate a location
I wish they would make that mandatory..
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Old 03-20-2009, 7:10 AM
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Have you been able to ID the LCNs ?? Yet.

Quote:
Originally Posted by kemmer View Post
I have umpd in my scanner. it is annoying because it seems like 20 seconds it sounds like a mic is key'd up for less than a second. Is there anyway to program arc330 to wait for a longer transmission? or does anyone know what it is?
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