NCSHP Low Band

[blueline72]

Can anyone give me some ideas of how I can have a better chance of monitoring SHP? I have scanners. I have access to a low band radio that I can get programmed to receive transmissions. I can hear the dispatch centers fine. I just want a better chance of hearing the troopers in the field talking back to the dispatch centers and car to car. I know there is a conversion to 800 going on, but a lot of troopers in my area are still using low band. Thanks to all who respond!!
B

 

[LarrySC]

Some areas are moving to 800. The secret to Low Band and 800 is the antenna. A motor home without fuel want make the trip. A scanner without that special antenna want hear the signal. There is a WNC [western NC] antenna at this site. It's a mobile that can be converted to base with the factory base adp. 3db gain VHF and 49" long still good for low band. A 42MHz antenna just for NCHP would do even a better job. www.bncantenna.com or larryscan@charter.net

 

[BryanTheRed]

but just to let you know most of the time you wont hear the troopers on low band unless they are pretty close, of course the antenna will pull em in a little better but low band they have to be pretty close.

 

[INDY72]

If you are high eneough up with the antenna mounting, youll have more success... Say on a 30 to 50 foot tower???? Or even a roof mount on a home if you live say on top of a mountian.

 

[K4ASJ]

Your Point Is ?

 

[drew6553]

Your Point Is ?

hey just to let you know u need to watch how u post come off sounding bro... this one sounded kinda cocky for a guy who had only made 5 post and joined this month

 

[INDY72]

The point being that the higher up your ant is the better the reception of mobiles. Reception of the Lo Band mobiles for NCSHP is just like any of the agencies using Lo Band NOT on a repeater system.. sketchy at best...... If they are over ten miles away from you.. 99 percent of the time, you will never hear them. Of course thier is the rare chance that you might catch a short skip.

 

[K4ASJ]

If They Are Out Of Their Car It Automatically Switches Over To 154.445 Witch Is Thier Vehicle Repeater. In This Case If They Are Near By And Are Out Of Thier Car You Will Hear All Of The Radio Traffic From Thier Radio Because Of Thier Repeater

 

[BryanTheRed]

well actually the mobile radio is being broadcasted over the siren speaker. Our first responder Tahoe and Suburban were setup the same way!

 

[JerGoTV3]

I was driving through some rural stretches last night at picked up the low-band in Columbus County, but never heard a trooper talk back. I did notice some activity off of the 154 band, but never heard anything.

 

[BryanTheRed]

I know here in Onslow even though they have the VIPER up and running I hear Dispatch oh 42.600 and the troopers back on a 458 channel I think they are keeping everything up and running until VIPER it completed in its entirety.

 

[jplyler]

FYI, The crossband repeater is 155.445 not 154.445.

Jon
N4ZVY

 

[jeffmulter]

If you have a scanner that can receive mid-band (72-76 MHz), you might also give a listen to 72.10 MHz / 103.5 Hz PL tone.

At one time, NCHP maintained a remote receiver on a tower in Seven Springs. Whatever the receiver picked up was rebroadcast to the comm center in Raleigh via the 72.10 link. All the links are directional, but you might get a good signal if you are located along the signal path, or in a side lobe of the antenna pattern.

Although many of the NCHP links have been replaced by microwave, some of the links appear to still be in place as back-ups to the primary voice network.

The advantage on monitoring the link is that the link antenna is usually several hundred feet up, and often receives the NCHP vehicles countywide.

With regards to 155.445 MHz., the range is very limited. The mobile extender channel - channel 1 in the high band radio - is set for low power.

And, if there is a trunked system in your area that NCHP officers have a dispatch talkgroup on, they may be relying on the trunked system handheld much more than the mobile extender radio for their out-of-car communications with dispatch.


Jeff Multer
Fort Mill, S.C.

 

[CCHLLM]

Somebody ain't reading the previous threads on this subject. Again, if the troopers have been issued 800 portables, then the vhf vehicular repeater has most likely been removed from the car, especially if it was one of the older Tait systems. Per the plan, the only cars getting the very few new VHF vehicular repeaters and HT1000 portables are those in districts where the SHP 800 mHz system is going to be a while, like western NC. ALL SHP cars have the capability of radio rebroadcast over the Siren/PA, and some troopers favor using that instead of the junk Tait repeater system, and rightfully so.

If a trooper was/is lucky, his car was/is equipped with the complete Motorola system which consists of a Motorola Syntor X 9000 with the siren unit and the vehicular repeater unit, all controlled from the Syntor control head, and a Motorola MaxTrac 25 watt mobile radio. Then there are the ubiquitous Tait vehicular repeater/charger/VHF mobile radios combos with Tait-labled portables that were built by Repco in Florida when Repco was still in business, there are Vertex VXR-1000 repeater systems (5 watt) with HT1000 Motorola portables, and those are usually accompanied by Motorola MaxTrac 25 watt mobile radios. There are a few Midland low band mobiles with companion VHF high band mobile repeater/mobile radio with Midland portables. There are even some Standard (pre-VertexStandard era) combinations and some Kenwood combos. Pick yer poison, most of the Standard and all of the Kenwoods are gone to my knowledge. The Tait junk could be considered sorta reliable only with constant maintenace, the Motorolas were very reliable, and the Midlands were OK if you could stand the Uniden scanner-like audio quality. The Kenwoods and Standards were miserable failures.

 

[jeffmulter]

>> Somebody ain't reading the previous threads on this subject.

I'm guilty ... sorry, Wx.

I live about 1/2 a mile from Union County / Waxhaw, so I hear their troopers using both 800 MHz (CMPD system), and the mobile extenders. I didn't give it a thought that it was an "either-or" setup, rather than having both radios available.


Jeff Multer

 

[CCHLLM]

I wasn't directing anything toward you, nor was it meant as any kind of criticism toward anyone. There are at least three threads on here that have discussed this subject to death, and one of 'em is a sticky, ha ha! And hey, the last thing the state is, is consistent. There are some troopers out there with both systems, but the reason those haven't been removed from those cars is that the car is close enough to "miling out" that nothing will be removed, but his new one won't very likely have a high band system if he's toting an 800 radio. If the high bander in his old car is in decent shape, it'll very likely be placed in a car working a district where there's no 800 up and running yet.

 

[CFP387]

In this county, our troopers were issued 800 radios but they still have low-band radios in their cars too. I live one mile from the SHP office/com center and most of the time I can hear car to base traffic county-wide with a 25 ft outdoor antenna.

What's funny is this: about one week out of the month I can't hear any SHP base traffic. I think the signal is being "blown" over me because their transmitter antenna is 106 ft high.

 

[blinddog50]

Viper traffic is starting to pick up in the Charlotte area.
The busiest is Troop H mutual aid and some ALE.

Nothing on a consistent basis as of yet.

 

[CCHLLM]

CFP387, there aren't any SHP cars anywhere in the state that don't have low band radios, no matter what other radio system is also in use in the district it's assigned to. And the signal is being "blown" over you? Gee, maybe the Mt Mitchell/Clingman's Peak site at 6600 feet needs to be lowered.

 

[BryanTheRed]

actually its 6,684 feet, I remember that from fourth grade!