P25 wide modulation

[nhfirefighter]

I know by the end of the month this "should" not be an issue but I thought I would pose the question. We have a local agency using P25 set to wide modulation. The agency uses all Motorola radios which allow this setting. We however are using Kenwood P25 radios which don't appear to allow for wide modulation on P25 channels. Does anyone know of a workaround with the Kenwood radios for this? I can program Motorola and Icom radio to wide modulation and they work fine on the system. The Kenwoods however don't even when setting to mixed mode with 25khz spacing. Specifically we are not able to monitor the traffic, the radio pauses indicating traffic however doesn't open up even on F7E NAC. For what its worth we are using TK-5210 and TK-5720.

[Thunderknight]

Is it simulcast? I think the wide refers to wide pulse modulation, not 25khz wide band.

[nhfirefighter]

Wirelessly posted (Mozilla/5.0 (iPhone; CPU iPhone OS 6_0 like Mac OS X) AppleWebKit/536.26 (KHTML, like Gecko) Version/6.0 Mobile/10A403 Safari/8536.25)

No it is conventional VHF P25 single site repeater. The system uses a Quntar repeater with Motorola Astro Spectras, XTL5000's, xts5000's and xts3000 radios. It is 25khz wide band per the Motorla code plug in the radios.

[cabletech]

I am surprised that you are able to program any thing in P25 wide band mode. Relooking thru the P25 rules/recomindations and other places, P25 is digital AND NARROW BAND ONLY.

Since it is only a couple of weeks away, just reprogram every thing to P25 narrow band digital and get it over with.

Or reprogram every thing to xx.xx frequency narrow band convential.

[W2NJS]

Originally Posted by cabletech

I am surprised that you are able to program any thing in P25 wide band mode. Relooking thru the P25 rules/recomindations and other places, P25 is digital AND NARROW BAND ONLY.

Since it is only a couple of weeks away, just reprogram every thing to P25 narrow band digital and get it over with.

Or reprogram every thing to xx.xx frequency narrow band convential.

Absolutely untrue. Cabletech does it again. You can run P25 in wide or narrow band modes. In my
home area we have ham P25 repeaters on both types.

[stevejacobson]

Out of curiosity, I programmed a APX7000 to see if it could do “P25 wide”.

APX7000 Dualband:

155.000 MHz - P25 Conv. Programmed TX Deviation - 2.5 kHz / 12.5 kHz
Actual TX dev = 3.5-3.7 kHz

155.000 MHz - P25 Conv. Programmed TX Deviation - 5 kHz / 25 kHz
Actual TX dev = 3.5-3.7 kHz

860.000 MHz - P25 Conv. Programmed TX Deviation - 5 kHz / 25 kHz
Actual TX dev = 4.6 kHz

The only way I could get P25 wide was in the 800 band. The channel spacing programming in the APX CPS had no effect on any VHF P25 conv channel; VHF P25 was always narrow.