Re: WA DNR Northwest Area Repeaters.

Posted by CraigH on August 14, 2000 at 23:56:56:

In Reply to: Re: WA DNR Northwest Area Repeaters. posted by spencer on August 14, 2000 at 10:53:28:

: Does narrow-band mean 12.5 khz operation? I knew DNR was testing digital (APCO P25) which is a 12.5 khz emission. Perhaps narrow-band analog for a while, THEN switch to P25?

If you are Spencer B then I don't need to explain this, if not, then this is for the benefit of the rest of our crowd also . . . Please correct me if I am off base here. I think everyone will be "digital" within 10 years by federal mandate. I believe it refers to "modulation" in this case. As far as I know it will be analog for now. I have seen no indications that they will move to a 12.5kc split. It definitely isn't digital modulation today. I recall there were some interferance issues with a certain moutain-top repeater on 159.240 and the Sno. Co. Sheriff at 159.210. Area "B" is now a an offset freq however ? From my observations the narrowband analog modulation is not difficult for one to determine. The voice appears to be diminished (distant) or more "contained" and dosen't seem to occupy as much of the spectrum. Try it on your receiver by tuning + -5kc / 10kc off freqency and see what you get. In the freq lists that I obtained I saw lots of channels, but only a few were "splits" and those belonged to the feds.

Regards,

: : : When did DNR switch NW area to 159.435 mhz? Guess this explains the
: : : lack of comms on 159.240.

: : : Kerwin

: : In a memo dated May 2000, the NW Region notified it's personnel of the coming switch to"narrow-band" repeaters. Where as they had been using 159.240 exclusively with (5) different "area" mountain-top repeaters, they now have switched to multiple "area" (zone) freqs (with different inputs and different outputs).

: : They use a varitey of mobile / portable radios: Astros, Spectras, Bendix Kings. Their freq list for the various "groups" or "banks" of freqs in the radios include about 170 different combinations of freqs including BLM, FS, NP, some local FDchannels, OSCCR, RED NET, SAR, DNR simplex TACs, AIR OPS, etc., etc., so that they can travel anywhere in the state, or in Oregon and communicate effectively. The radios are programed to scan at all times with a "home" channel to revert to.

: : The NW Region is the first to move to the "narrow-band" and they are still working some bugs out of the switch over. The new freqs for the NW DNR are: 159.435(area A), 166.5625(area B), 159.375(area C), 159.240(areas D & E), and 159.285(area G). In addition, they also have the "State" areas repeater freqs programed: 159.420 which is currently used by WILDLIFE and some STATE PARKS. Don't confuse them with the local DNR areas however because they will refer to them as AREA A, B, C, E also.

Follow Ups:

Re: WA DNR NW Area Repeaters FlashP 07:10:41 8/16/100 (3)
- Re: WA DNR NW Area Repeaters CraigH 20:12:40 8/16/100 (0)
- Re: WA DNR NW Area Repeaters CraigH 20:12:32 8/16/100 (1)
  - Re: WA DNR NW Area Repeaters Chris 23:02:18 8/16/100 (0)

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Comments:
: : Does narrow-band mean 12.5 khz operation? I knew DNR was testing digital (APCO P25) which is a 12.5 khz emission. Perhaps narrow-band analog for a while, THEN switch to P25? : If you are Spencer B then I don't need to explain this, if not, then this is for the benefit of the rest of our crowd also . . . Please correct me if I am off base here. I think everyone will be "digital" within 10 years by federal mandate. I believe it refers to "modulation" in this case. As far as I know it will be analog for now. I have seen no indications that they will move to a 12.5kc split. It definitely isn't digital modulation today. I recall there were some interferance issues with a certain moutain-top repeater on 159.240 and the Sno. Co. Sheriff at 159.210. Area "B" is now a an offset freq however ? From my observations the narrowband analog modulation is not difficult for one to determine. The voice appears to be diminished (distant) or more "contained" and dosen't seem to occupy as much of the spectrum. Try it on your receiver by tuning + -5kc / 10kc off freqency and see what you get. In the freq lists that I obtained I saw lots of channels, but only a few were "splits" and those belonged to the feds. : Regards, : : : : : When did DNR switch NW area to 159.435 mhz? Guess this explains the : : : : lack of comms on 159.240. : : : : Kerwin : : : In a memo dated May 2000, the NW Region notified it's personnel of the coming switch to"narrow-band" repeaters. Where as they had been using 159.240 exclusively with (5) different "area" mountain-top repeaters, they now have switched to multiple "area" (zone) freqs (with different inputs and different outputs). : : : They use a varitey of mobile / portable radios: Astros, Spectras, Bendix Kings. Their freq list for the various "groups" or "banks" of freqs in the radios include about 170 different combinations of freqs including BLM, FS, NP, some local FDchannels, OSCCR, RED NET, SAR, DNR simplex TACs, AIR OPS, etc., etc., so that they can travel anywhere in the state, or in Oregon and communicate effectively. The radios are programed to scan at all times with a "home" channel to revert to. : : : The NW Region is the first to move to the "narrow-band" and they are still working some bugs out of the switch over. The new freqs for the NW DNR are: 159.435(area A), 166.5625(area B), 159.375(area C), 159.240(areas D & E), and 159.285(area G). In addition, they also have the "State" areas repeater freqs programed: 159.420 which is currently used by WILDLIFE and some STATE PARKS. Don't confuse them with the local DNR areas however because they will refer to them as AREA A, B, C, E also.

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