[TrunkCom] Control Frequency Only Mode

[Jeff Kenyon]

Its also noteworthy to say that Motorola radios themselves even have control 
channel only mode.
----- Original Message ----- 
From: "bearcat" <rwnewbould at comcast.net>
To: "'Discussion of Monitoring Trunk Radio Systems'" 
<trunkcom at mailman.qth.net>
Sent: Monday, October 24, 2005 10:02 PM
Subject: RE: [TrunkCom] Control Frequency Only Mode


> Each 800/900 mhz freq has been aasigned a channel no.  The control
> channel data from the system tells the units which channel no. (hence
> freq) to go to.  The scanner gets the information from the system
> control channel so they can add as many new sites as they need and the
> data will then be on the system control channel so the scanner handles
> if just fine.  This is why rebanding is such and issue the channel no.s
> being sent will make no sense to the scanner.  The advantage to using CC
> only programming is that if something would change on the system the
> scanner user will never miss a beat.  If you have all of the freqs
> programmed in a a new site is added you will not hear it.
>
> This is explained to the best of my limited tech knowledge
>
> Rich
>
> -----Original Message-----
> From: trunkcom-bounces at mailman.qth.net
> [mailto:trunkcom-bounces at mailman.qth.net] On Behalf Of JERRY NONE
> Sent: Monday, October 24, 2005 10:58 AM
> To: Discussion of Monitoring Trunk Radio Systems
> Subject: Re: [TrunkCom] Control Frequency Only Mode
>
>
> Does anybody have a copy of this band plan?
>
> --- Jeff Kenyon <at649 at tcnet.org> wrote:
>
>> Hi Jerry, a scanner that doesn't support control
>> only mode will have the
>> frequencies as reference to go to for a
>> transmission.  In control channel
>> only mode, the scanner follows the specific band
>> plan that Motorola has
>> set up for its various bands such as 800 and 900 MHz
>> trunking so that is
>> how this is all possible, and with control only mode
>> you can hear all the
>> transmission, and any subsequent transmission.
>>
>>
>>
>>
>>
>> On Mon, 24 Oct 2005, JERRY NONE wrote:
>>
>> > Question.  Okay, say for instance you have a radio
>> > scanner that does NOT do Control Frequency Only
>> Mode.
>> > So you program in all the frequencies.  So when
>> the
>> > Controller tells Talk group 336 to go to a
>> frequency
>> > of 868.7125, how does a radio scanner in Control
>> > Frequency Only Mode know NOT to go that frequency.
>> > Instead the message is heard on one of the Control Frequencies.
>> > Also by being in Control Only Mode,
>> does
>> > this prevent the radio scanner from hearing all
>> the
>> > transmissions?  I mean if the system you are
>> > monitoring has seven frequencies and then adds
>> three
>> > more frequencies to accomodate extra users but the
>> > Control Frequencies remain @ the same amount,
>> won't
>> > that cut off some transmissions?  What happens
>> then,
>> > do you just hear the priority transmisions?
>> >
>> >
>>
> ========================================================================
>> > County Of Medina Ohio County Scanner Group:
>> > http://groups.yahoo.com/group/medinascanner/
>> >
>>
> ------------------------------------------------------------------------
>> > Southwest_Parma_Strongsville Scanner Group:
>> >
>>
> http://groups.yahoo.com/group/Southwest_Parma_Strongsville/
>> >
>>
> ------------------------------------------------------------------------
>> > There will be a new radio scanner on the market
>> soon.  Here is the Yahoo Group for that Radio
>> Scanner:  http://groups.yahoo.com/group/BCD996T/
>> >
>>
> ========================================================================
>> >
>> >
>> >
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> ========================================================================
> Southwestern Cuyahoga County Ohio, Parma Ohio & Strongsville Ohio Radio
> Scanner Group:
> http://groups.yahoo.com/group/Southwest_Parma_Strongsville/
> ------------------------------------------------------------------------
> County Of Medina Ohio County Scanner Group:
> http://groups.yahoo.com/group/medinascanner/
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