new hampshire digital

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Asmitty0010

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NHSP does run in full Digital Mode, also known as APCO 25 mode. A digital scanner is required to monitor them. They also, on rare occasion, been know to use encryption with some of their communcation. No scanner will decode those transmissions, again this is very rare.
 

steele_lpd

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The OP wasn't worded very well, IMO. However, Alex summed up pretty much everything that could be pieced together from the OP.
 

zerg901

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sandman1991 - The chirps that you hear might be data signals going to and from the computers in the cars. I am pretty sure that NHSP runs their voice comms and their data comms on the same channels. Peter Sz
 
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You may think I'm insane but has anyone heard DEA NH if you want to call it that? Here's how I hear them...

I have a Pro-106 scanner and my town's PD is set up CTCSS on a repeater. The first channel is set up specifically with the CT code. The second channel is the same mhz but has no code. I did this specifically because some assisting towns talk with P25 on this channel and don't have the repeater code in it so I would miss the P25 if I didn't have the setup.

So I have heard a group of guys on digital on the second channel pick up but when I clicked the squelch mode as none and search, then saved it, my radio would double chirp (I put that in on purpose) every time they talked but would not code it and heard nothing. I ended up putting it back to none pecause I don't know the assiting town's PL codes.

This evening they were passing my town on 101 and one of them called another and asked for their location and they happened to be an exit behind the other. Then one goes "I'm not too far away and I can hear you loud and clear on D.E.aaaa." The "A" was pronounced like "oo lala."

I don't want to record it because they talk about their UC and other info not needed online but...I just think it's wierd how they opperate on my town's PD frequency and I can get it still. I'm sure the officers would also hear it. With their radios, once the mic is off the hook, it's on Monitor mode and also can pick up another analog frequency when it's off the clip.
 

sandman1991

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chirps

that may be true how ever it sounds like voices so im thinking it encripted. has any one heard about narrow banding starting in 2012? and how is this going to effect scanningon low and high band? thanks for the help
 

Matt0691

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As far as I know, P-25 does not have to change anything to comply with the narrowbanding. VHF Analog freq's do, but if they switch to P-25 (Which most departments already have access to) then they will not be effected.
 

steele_lpd

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As far as I know, P-25 does not have to change anything to comply with the narrowbanding. VHF Analog freq's do, but if they switch to P-25 (Which most departments already have access to) then they will not be effected.


Not correct. P25 can be wideband or narrowband. All agencies will need to switch (VHF, UHF, and 800 MHz) to narrowband no later than Jan 1, 2013. That means they should start (and a lot already have) switching soon. Some P25 channels in my area are already narrowband while others are still wideband and will need to be changed.

As far as monitoring them goes... I have an older BC-796D (in addition to several P25 mobile and portable radios... but let's just talk about the scanner for now)... I have the option to program each channel as wide, narrow, or auto. If it's on auto there won't be a noticeable difference. If it's set to wide on a narrow channel the audio will be low. The opposite is to be said if the scanner is set to narrow and the channel is wide the audio will be louder than would be expected.

Another misconception is that the narrowband mandate means everyone has to go digital. That is 100% not true. If said agency wishes to remain on an analog system they are more than welcome to provided they are using a 12.5 kHz channel and not a 25 kHz channel.

Another concern about narrowbanding is that the coverage area will decrease. If the radio system is built properly and is maintained the way it should be this is not going to be the case. Yes, if you're listening to a radio system that is distant and was never designed to cover your area you may notice a difference or they may just go away completely.

As far as low band VHF... that is being allowed to stay wideband.
 
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Matt0691

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I was probably thinking more along the lines that most P-25 capable radios are already capable of Narrobanding. I hear the HT1000 that a lot of Police Dept's have used throughout the years cannot do narrow band and will need to be replaced.
 

steele_lpd

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I was probably thinking more along the lines that most P-25 capable radios are already capable of Narrobanding. I hear the HT1000 that a lot of Police Dept's have used throughout the years cannot do narrow band and will need to be replaced.

That is correct. Only a select number of HT1000's are able to do narrowband. And even then they are not able to do 2.5 kHz spacing like 158.3025.

New Hampshire law enforcement radios should all be either ASTRO Spectra's with a P25 flashcode or newer.
 
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What about .8075 VHF? That's a transmit freq for a repeater for my dept and I read back in the day they used HT1000s. They have since gone to the XTS but still stay analog and a repeater.
 

steele_lpd

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What about .8075 VHF? That's a transmit freq for a repeater for my dept and I read back in the day they used HT1000s. They have since gone to the XTS but still stay analog and a repeater.

.8075 is a 2.5 kHz channel. How long have they used the repeater? My thought is they got a new repeater pair or started using the repeater when the state issued grant radios (ASTRO Spectra mobiles and XTS3000 portables) to the PDs 10+ years ago.

But without knowing more about the system its hard to say.
 
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You may be right. I think the last time I saw an FCC license for it was 2001ish. Maybe their old system was direct to direct but they use astro spectras and xts models now.
 

sandman1991

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wi was asking someone how do you program in the pl number . i looked in my manual for pro-197 and pro 2096 . lokked in the manual and didnt find any thing in either one can any one help me?
 

blangell

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wi was asking someone how do you program in the pl number . i looked in my manual for pro-197 and pro 2096 . lokked in the manual and didnt find any thing in either one can any one help me?

Page 63 of the 2096 User Manual and pg. 101 of the 197 User Guide should get you going in the right direction
 

sandman1991

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i think we are talking two differant pls. i have the local freqs ie Rx155.400-pl 127.3--TX053.890 PL127.3 i got these from my local radio shack in claremont n.h. doug is very good at scanners sorry i didnt explain my self i wasnt asking about permanent lock out. thanks
 
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