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Old 09-06-2010, 10:45 PM
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Default police and fire frequencies

Is there a directory somewhere that lists all of our local police and fire frequencies? would be nice to have in the truck.

I'm trying to listen to the fire effort tonight. there is some chatter on 153.950, and 154.220 is more active and sounds like Gold Hill fire?

what other ones do you know.
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Old 09-07-2010, 06:02 AM
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http://www.radioreference.com/apps/db/?ctid=247
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Old 09-07-2010, 08:17 AM
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Quote:
Originally Posted by DaveInDenver View Post
Yeah that's the stuff, thanks Dave.
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Old 09-07-2010, 08:51 AM
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How does someone with a 2m radio access these freq's?
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Old 09-07-2010, 09:00 AM
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You just punch it in and monitor away. You're not allowed to transmit obviously, and your radio wouldn't allow it anyway unless you went in and hacked it up. But anyone can listen!
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Old 09-07-2010, 09:48 AM
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Quote:
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How does someone with a 2m radio access these freq's?
Like Nak says, most radios we have in our trucks can listen to wide swaths of spectrum outside the ham bands. Not all radios can do that, but it's pretty common for the past 15 years or so to have wide band RX. Go to VFO mode and punch it in your mic or twirl the tune knob.

That said, many larger police and fire departments have gone to 800MHz and trunked systems. Some (most) are also digital. Like Denver EMS, PD and FD are on EDACS, which is G.E.'s digital trunked system. Being digital our analog radios can only tune the carrier and hear the information, but are unable to decode it back into voice. This is the modem-ish sounds you sometimes hear tuning around. Could also really be just a modem, someone doing digital modes.

Some radios can figure out the protocol and trunking pool map, although the information itself can be encrypted so that it remains scrambled despite being decoded. There are few competing protocols, EDACS, P25, Motorola Type I and Type II, etc. That's not the hard part to figure out if you want to listen to public service. PSK31 (data) and D-STAR (voice) are forms of digital radio, although they're not trunked or anything. Scanners can decode the digital signal and often figure out the squelch tones, but they usually can't descramble the signals if they are encrypted.
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Old 09-07-2010, 10:01 AM
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Guess I've never tried it. Thanks for the info.
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Old 09-07-2010, 11:58 AM
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For what it's worth, there is one, if not more repeaters at the property in Evergreen for the Firefighters.
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