InterceptRadio.com Forums

They're also running Seattle South Area on the Grass Mtn IWN site.

_________________
Richard
Do you know Bunnery?

Because nothing says 'interoperability' more than a phase 1 vhf system linked to a phase 2 700 system, simulcast on a conventional channel using an IMBE vocoder.

BTW, both north and south are complaining of coverage issues...troopers stopping on the side of the road and having no coverage....


sigh...

_________________
Oh! Come and see the violence inherent in the system! Help, help, I'm being repressed!

Because nothing says interoperability more than multiband, multimode radios capable of roaming onto nearly any system in the state? Like WSP and WDFW using the Pierce County 7/800 system lately? Wide area trunking/roaming via the IWN system?

If wideband analog is best, please ditch your HDTV and go back to a 3-channel OTA set with rabbit ears (feel free to augment reception with coat hangers as needed).

FWIW, I too have noticed Troops complaining of dead zones, usually with the caveat that "signal is excellent on the portable, bad on car radio". Additionally, lots of busy bonks by users who have never had a PTT tone before (training issues).

_________________
President-in-Exile, Seattle Area Radio Communications And Scanner Traffic Intercept Crew (SARCASTIC)
Don't feel bad if you can't use your STD100/200; there are still people using Digital Frequency Search!
Bunnery definition for the under-fives

Yep, I've heard the same complaints. I wonder if some of the car radios were not programmed correctly and/or have the wrong settings.

_________________
"A well regulated breakfast, being necessary to the healthy start of the day, the right of the people to keep and eat food shall not be infringed."

Digital does not like multipath. Multipath happens allot more when one uses high gain transmit antennas and lots of power. Especially on VHF. Said agency tends to use this combo.

_________________
"A well regulated breakfast, being necessary to the healthy start of the day, the right of the people to keep and eat food shall not be infringed."

From what I understand, the APX mobiles were ordered in 50w versions,not 110w like the x9000 spectra orion m7100 and kenwoods before them.

_________________
Oh! Come and see the violence inherent in the system! Help, help, I'm being repressed!

Im talking about the base station installs but yes you are correct about the 50 watt outputs on VHF of their new mobile radios.

_________________
"A well regulated breakfast, being necessary to the healthy start of the day, the right of the people to keep and eat food shall not be infringed."

If you are designing for 3 watt portable on the hip, you really can't expect a Tower Top Amp to have a dynamic range for a 110 Watt mobile with a gain antenna. Physics win every time....

_________________
I generate Board Warnings

The cops fought the law...and the law won..

lololol

_________________
Oh! Come and see the violence inherent in the system! Help, help, I'm being repressed!

ok, updated my scanners today with the new P25 (not using the VHF channel). Using my PSR-500, so far they sound awful.

So what P25 system are you monitoring then..? The 700 or IWN?

700, I had put in IWN but everything was annoyingly encrypted. Haven't had much time to listen yet, mostly I focus on the fire dept. :-)

There are some things where wideband analog is best.

Public Safety LMR is one of them... The human ear is still a better decoder than any chip in the radio. Having a radio that wont at least attempt to break static is unacceptable to many of us. If the radio is making some kind of noise the user can at least adjust his position to try and listen. With digital they may never know their getting a call to try and adjust... In fringe areas or in heavy multipath where the signal is questionable.

Digital hides interference from the user. Analog users can report that they are hearing a beat tone/other users on system/ect.

_________________
"A well regulated breakfast, being necessary to the healthy start of the day, the right of the people to keep and eat food shall not be infringed."

Yup, in addition, the more complicated it is, the easier it is for someone to screw it up. There's always brute force, which works better the more complicated the system is. Jam a digital signal and you'd never know you're being jammed....just wouldn't have any audio...

Jam a single analog channel and someone switches to an alternate freq.

Jam a control channel and....watch the radios go into failsoft one by one....and hope it's analog, as site trunking won't work if it uses the control channel if it loses its link to the other zones.

I can't believe that so called security experts are so concerned about people being able to listen in and not cloning radios....but have a chain link fence and a gate with a dollar store padlock to secure critical infrastructure... This tells me that it's not about security ay all.

But that's for another thread....

/vent

_________________
Oh! Come and see the violence inherent in the system! Help, help, I'm being repressed!