APCO 25 Ham Systems

[RA3APW]

Hi All,

are you need a special permission in USA from local authority to install/use P25 system for HAM radio operators ?

We widely use in Europe a similar digital PMR standard - TETRA (TETRA Association) but I never heard that TETRA standard was used for HAM radio service in EU.

Karen, ra3apw

 

[Baylink]

> hams don't rely on their radios like public safety agencies do. Most ham repeaters aren't passing life-threatening traffic all day and all night.

Sure. But if P25 radios uniformly have trouble with high-noise environments, and they haven't been able to deal with it in the equipment design, then "failure" isn't all that strong a word anymore, is it?

(Clearly, I have no dog in this fight.)

 

[newsphotog]

N0NDP put up a qantar in KCMO on 147.015


To our knowledge t's the first and only one in the area.

We were actually getting just a little bit better range than analog at one point.


mancow

Anyone know if this repeater is still on? I'm sitting in my family's living room about 4 miles away from the tower site and I don't hear it on either analog or P25. I couldn't hear anything on my way in even at Highways 291 and 50.

 

[mancow]

No, as amazing as it may seem the mode wasn't appreciated and it went back to analog. I don't know if the repeater is still on at all though. When it lost P25 I left it. It's too bad too because it had excellent range. The P25 functionality is now at 444.450 in Lee's Summit, Mo. That machine works great and has IRLP node 3309 attached.

There is a mixed mode P25 Vhf machine in Ottawa about 50 miles S/W of KC on I-35 on 147.390 but you can't generally hit it mobile until about Gardner. It has an IRLP node of 7989 attached to it.

 

[newsphotog]

No, as amazing as it may seem the mode wasn't appreciated and it went back to analog. I don't know if the repeater is still on at all though. When it lost P25 I left it. It's too bad too because it had excellent range. The P25 functionality is now at 444.450 in Lee's Summit, Mo. That machine works great and has IRLP node 3309 attached.

There is a mixed mode P25 Vhf machine in Ottawa about 50 miles S/W of KC on I-35 on 147.390 but you can't generally hit it mobile until about Gardner. It has an IRLP node of 7989 attached to it.

Wow, that is a shame. Trying out a ham P25 repeater for the first time was going to be the highlight of my travel down here :lol:. I only have a VHF XTS2500, so I'll have to come back at a later date with a UHF version...

Is the UHF P25 repeater located on the MHP tower in LS, or is it elsewhere in the city? I'm located near West High for the holidays.

 

[w5jrlp-25]

new to P-25 need advice about equipment

I am new to digital radio and reciently purchased 2 xts 5000 radios. one is vhf,the other one is uhf. they both have the FPP option. i would like to get together with other P-25 users in the Dallas/Fort worth area. Help! Also would like to obtain nation wide P-25 repeater data base if one exists.Thanks,w5jrlp-25.

 

[SCPD]

New P25 machine in Indiana

Finally got a couple of friends together and put up a UHF Quantar in South Bend, IN. Running in ASTRO Mode only with portable coverage throughout St. Joseph County. If you're driving through on the toll road, feel free to say Hi.

N9UPW/R
440.475/445.475
NAC 788


KS4VT, do you still have your map of P25 systems?

 

[N4DES]

New P25 machine in Indiana

Finally got a couple of friends together and put up a UHF Quantar in South Bend, IN. Running in ASTRO Mode only with portable coverage throughout St. Joseph County. If you're driving through on the toll road, feel free to say Hi.

N9UPW/R
440.475/445.475
NAC 788


KS4VT, do you still have your map of P25 systems?

Unfortunately I do not. There is a yahoo group (APCO25hamradio) that has a really good listing in their files section that you can update and download to excel.

 

[W2NJS]

I am new to digital radio and reciently purchased 2 xts 5000 radios. one is vhf,the other one is uhf. they both have the FPP option. i would like to get together with other P-25 users in the Dallas/Fort worth area. Help! Also would like to obtain nation wide P-25 repeater data base if one exists.Thanks,w5jrlp-25.

The ARRL Repeater Directory, which obviously is not up to date in the immediate sense, shows only four P25 Texas repeaters, in Austin, Cedar Park, and two in El Paso, which are respectively on 146.68/123, 442.65/114, 146.92/293, and 443.85/293. The numbers after the "/" are the NACs for the repeaters.

 

[mikewazowski]

The 147.2850Mhz repeater in Edgar, Ontario (near Barrie) is now linked digitally with the 444.750Mhz machine in Toronto.

There's also a standalone dual mode repeater in Berkely, Ontario (south of Owen Sound) on 145.2900Mhz.

Sorry, the repeater in Toronto is on 444.4500Mhz.

 

[ts548]

A question for those of you That have quantars as repeaters. To make it work in digital mode I was told I needed an interface of some sorts, is this True? And if so What should I be looking for? I would hate to get this quantar which has the ability to do mix mode only to have to run it in analog mode.

 

[grem467]

As long as your quantar has digital capable firmware in it, it is simply a matter of telling the station to operate mixed mode. No special outboard hardware needed. Now if you want to hook up another device to the station and have it available in digital mode, you need to get a DIU as the station does not have a built in vocoder.

 

[ts548]

As long as your quantar has digital capable firmware in it, it is simply a matter of telling the station to operate mixed mode. No special outboard hardware needed. Now if you want to hook up another device to the station and have it available in digital mode, you need to get a DIU as the station does not have a built in vocoder.

Thanks. It has the latest firmware in it 20.x.x
x. So as a stand alone then I need nothing. What would it take to add it to a link system? Can it still work on the link system in mix mode or would I have to take it to analog only as its a analog system.

 

[ZeroGravity]

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.....

 

[62Truck]

Just wondering if any one knew of any P25 repeaters in the southern New York area like between Dutchess County and NYC

 

[Daniel_Boone]

Did you do a internet search?

Did you look at the different club profiles for those areas to see if any of the clubs advertised that they had that type of repeater?

Chances are - there is not any of that type in that area due to the fact that the digital mode does not work well if at all - except at close range of the repeater.
Hence if you are not LOS - line of sight - or NLOS - near line of sight, those repeaters do not work because of the design.

Truthfully many of the public service modes that started out using the P 25 or POCO 25 if you really want to get technical about it has looked at abandoning it - even before it became popular because of all the problems they have with that type of system.

 

[mikewazowski]

Wow, somebody doesn't know what he's talking about.

 

[newsphotog]

Don't feed the trolls.

 

[smokeybehr]

Wow, somebody doesn't know what he's talking about.

Not a single effing clue.

 

[62Truck]

Did you do a internet search?

Did you look at the different club profiles for those areas to see if any of the clubs advertised that they had that type of repeater?

Chances are - there is not any of that type in that area due to the fact that the digital mode does not work well if at all - except at close range of the repeater.
Hence if you are not LOS - line of sight - or NLOS - near line of sight, those repeaters do not work because of the design.

Truthfully many of the public service modes that started out using the P 25 or POCO 25 if you really want to get technical about it has looked at abandoning it - even before it became popular because of all the problems they have with that type of system.

Ummm...OK?