[TrunkCom] Offset Setting Information

Mon, 19 Jan 2004 19:25:27 -0600

Hi everyone.  I have a BC250D, and you don't have to E-mail this to the
list, but I am wondering how I would set this using the BC250D and the
keystrokes?
----- Original Message ----- 
From: "Parlini, Flash" <[email protected]>
To: <[email protected]>
Sent: Monday, January 19, 2004 12:59 PM
Subject: RE: [TrunkCom] Offset Setting Information


> The control channel transmits commands that say "go to channel XXX for
talkgroup A".  The radio needs to compute frequency from channel number:
Freq = Base + (XXX minus Offset) * Spacing
>
> The offset is there because the base frequency isn't on channel zero, it's
some channel number in the hundreds.  Normally, systems use a default value
for offset, but sometimes they have two or three offsets, each offset going
with a range of channel numbers.
>
> If you know only the frequencies, then it's trial and error.  If you have
Trunker, it will show the channel numbers in hex, and you can get the base
and spacing from any two channel/frequency pairs (assume offset=380 to
start).
> Flash
>
>
> -----Original Message-----
> From: Rich Newbould [mailto:[email protected]]
> Sent: Sunday, 2004 January 18 06:09
> To: Trunkcom
> Subject: [TrunkCom] Offset Setting Information
>
>
> Is there some mathematical solution to determining the
>
> BASE
> OFFSET
> SPACING
>
> I am not sure where the Base comes from
> The offset seems obvious
> Then the Spacing how is this determined ?
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