[FedCom] fedcom in the philadelphia area today

Sun Oct 6 23:57:32 EDT 2013

It was just meant to explain why the Pro96 will sometimes round 
frequencies up or down due to its hard coded tuning steps.

It is why 173.9375 was rounded up to 173.940 in your Pro96. 173.9375 
is not a valid frequency in the Pro-96.

That amount of rounding from the true frequency can be enough to 
cause the radio to not decode P25 digital signals.

At 01:40 PM 10/6/2013, you wrote:
>what does this mean though for use of the scanner for the  federal freqs.
>
>
>
>In a message dated 10/6/2013 2:33:40 P.M. Eastern Daylight Time,
>aaaaaazcdf23 at hotmail.com writes:
>
>The  Pro96 as well as some other GRE made radios use odd fixed steps
>sizes in  its different bands so you can't always tune the actual frequency.
>
>This  problem is still present in some of their newer digital models as
>well.
>Below are the bands and step sizes as hardcoded by the Pr096  firmware.
>
>BAND   STEP
>0.0050 -   24.9950     5.00
>5.0000 -   54.0000      5.00
>54.0050 -  107.9950      5.00
>108.0000 -  136.9875     12.50
>137.0000 -  150.7750      5.00
>150.7825 -  150.8125      7.50
>150.8150 -  154.4525      7.50
>154.4562 -  154.4787      7.50
>154.4825 -  154.5050      7.50
>154.5100 -  154.5250      5.00
>154.5275 -  154.5462      6.25
>154.5475 -  154.6075      7.50
>154.6100 -  154.6550      5.00
>154.6575 -  156.2475      7.50
>156.2500 -  157.4750      5.00
>157.4775 -  161.5650      7.50
>161.5700 -  173.2000      5.00
>173.2037 -  173.2225      6.25
>173.2250 -  173.3875      6.25
>173.3900 -  173.4150      6.25
>173.4200 -  174.0000      5.00
>174.0050 -  216.0000      5.00
>216.0025 -  221.9975      5.00
>222.0000 -  225.0000      5.00
>225.0050 -  405.9950      5.00
>406.0000 -  512.0000      6.25
>512.0062 -  805.9937      6.25
>806.0000 -  823.9875      6.25
>849.0000 -  868.9875      6.25
>894.0000 -  960.0000      6.25
>960.0062 - 1239.9937      6.25
>1240.0000 - 1300.0000      6.25
>1300.0062 - 4194.3000      6.25
>
>At 10:38 AM 10/6/2013, you wrote:
> >Not sure then how/why  your radio is rounding off to 173.9400 when the
>actual
> >freq is  173.9375
> >
> >
> >
> >Yes the Pro 96 does  P25
> >
> >
> >
> >Bill - N1KUG
> >
> >Boston,  Mass
> >
> >Cruise Ship Frequencies
> >
> >   <http://scanmaritime.com/>  http://scanmaritime.com/
> >
> >
> >
> >
> >
> >From:  Avram911 at aol.com [mailto:Avram911 at aol.com]
> >Sent: Saturday, October 05,  2013 4:05 PM
> >To: ecps92 at earthlink.net
> >Subject: Re: [FedCom]  fedcom in the philadelphia area today
> >
> >
> >
> >i have a  pro 96 scanner. i thought it does p-25. what would be a better
> >radio  ?
> >
> >
> >
> >
> >
> >In a message dated 10/5/2013  1:48:40 P.M. Eastern Daylight Time,
> >ecps92 at earthlink.net  writes:
> >
> >I think you mean 173.9375
> >Sounds like you have  an older radio that rounds up.
> >
> >What you are hearing is likely  P25, you would want to upgrade your scanner
> >if you plan to listen to  any P25 traffic.
> >
> >
> >Bill - N1KUG
> >Boston,  Mass
> >Cruise Ship  Frequencies
> >http://scanmaritime.com/
> >
> >
> >
> >-----Original  Message-----
> >From: fedcom-bounces at mailman.qth.net
>[mailto:fedcom-bounces at mailman.qth.net]
> >On Behalf Of  Avram911 at aol.com
> >Sent: Friday, October 04, 2013 4:20 PM
> >To:  fedcom at mailman.qth.net
> >Subject: [FedCom] fedcom in the philadelphia  area today
> >
> >
> >today i have been getting des or encryption  on 173.94 which i  have as
>being
> >an fbi  frequency
> >
> >anyone have any info on this in the  philadelphia   area
> >
> >thanks
> >
> >Arthur
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