[Scan-DC] New P25 control channel found in 380MHz band

[Larry Van Horn]

Hello Robert and all.

The main reason why none of the manufacturers have looked at this range
is because it wasn't even on anyone's radar scope until after we printed
the first news of it in MT's Milcom column. Until that time Uniden, GRE
and others had no reason to program a 12.5 kHz step in that range, 25
kHz was the primary step for this aviation AM mode band.

I guarantee at least one manuafacturer knows what is happening in that
380-400 MHz and don't be surprised that scanner equipment will soon
become available to aid us in trunking those systems.

73 all and good hunting,

Larry Van Horn, N5FPW USN (Ret)
Monitoring Times Magazine Assistant Editor 


-----Original Message-----
From: scan-dc-bounces at mailman.qth.net
[mailto:scan-dc-bounces at mailman.qth.net] On Behalf Of Robert H. Eisner
Sent: Friday, January 28, 2005 5:04 PM
To: scan-dc at mailman.qth.net
Subject: RE: [Scan-DC] New P25 control channel found in 380MHz band


Thanks!  The problem is the Control channel is so weak here I can barely
lock onto because it's 2.5khz off in frequency.  I have no idea why GRE
set the frequency step to 5khz for the 380 to 400 Mhz band. 

I know this range is not officially supported so with the Pro96.  It
just happens to work because I opened it up with the extended
frequencies option in Win96.


--- Gary Mitchelson - N3JPU <n3jpu at speakeasy.net> wrote:

> Base 380.00000, Step 0.01250, Offset 10.00000
> 
> It's to bad RS designed the 96 to not have the proper tuning steps, no

> idea what they were thinking. Program it as close as you can, it still

> should work.
> 
> I'm actually using the PRO-96 as a P25 IF decoder behind a WJ-8618B.
> 
> Gary Mitchelson
> N3JPU Montgomery Co. MD  FM19
> http://www.mitchelson.org/
> 

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