Author Topic: Itinerant frequencies for SHTF comms- a discussion  (Read 6352 times)

Offline doublehelix

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Itinerant frequencies for SHTF comms- a discussion
« on: August 05, 2009, 02:01:23 PM »
Positives:
Cheap equipment, radios available in the surplus market (especially UHF/VHF)
Encryption is legal (unlike ham) on most of them (except GMRS and MURS)
No license required for most of them, or a simple one-page nationwide itinerant license (except for GMRS)


Negatives:
Lots of people have access to the frequencies
...add your own here

Here's a list (not comprehensive)

027.4900 - Business (Low Power) / (Itinerant)
027.5100 - Business (Low Power)
027.5530 - Business (Low Power)
30.84000 - Business (Low Power)
33.12000 - Business (Low Power) (.5 watt)
33.14000 - Business (Low Power)
33.40000 - Business (Low Power)
35.02000 - Business (Low Power)
35.04000 - Itinerant Business
42.98000 - Business (Low Power)
43.04000 - Itinerant Business (Special Industrial)
151.5050 - Itinerant Business (Special Industrial)
151.6250 - Red Dot Commercial Use, Mobile VHF (Common) / (Itinerant)
151.8200 - Multi Use Radio Service Ch. 1
151.8800 - Multi Use Radio Service Ch. 2
151.9400 - Multi Use Radio Service Ch. 3
151.9550 - Purple Dot Commercial Use
154.5700 - Multi Use Radio Service Ch. 4
154.6000 - Multi Use Radio Service Ch. 5
158.4000 - Itinerant Business (Special Industrial)
451.8000/456.8 - Itinerant Business (Special Industrial)
457.5250 - Business (Low Power)
457.5500 - Business (Low Power)
457.5750 - Business (Low Power)
457.6000 - Business (Low Power)
462.5750 - White Dot GMRS, Non-Commercial Use
462.6250 - Black Dot GMRS, Non-Commercial Use
462.6750 - Orange Dot GMRS, Non-Commercial (Emergency Use or Travel Info Only)
464.5000/469.50 - Brown Dot Commercial Use, Mobile UHF / (Itinerant)
464.5500/469.55 - Yellow Dot Commercial Use, Mobile UHF / (Itinerant)
467.7500 - Business (Low Power)
467.7625 - “J” Dot Business (Low Power)
467.7750 - Business (Low Power)
467.8000 - Business (Low Power)
467.8125 - “K” Dot Business (Low Power)
467.8250 - Business (Low Power)
467.8500 - Silver Star Commercial Use, Base UHF (Low Power)
467.8750 - Gold Star Commercial Use, Base UHF (Low Power)
467.9000 - Red Star Commercial Use, Base UHF (Low Power)
467.9250 - Blue Star Commercial Use, Base UHF (Low Power)


Offline doublehelix

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Re: Itinerant frequencies for SHTF comms- a discussion
« Reply #1 on: August 05, 2009, 02:02:42 PM »
Good discussion of what's available and power outputs.

http://www.tampascanner.info/natnlbs.htm

Offline DeltaEchoVictor

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Re: Itinerant frequencies for SHTF comms- a discussion
« Reply #2 on: August 05, 2009, 06:51:47 PM »
Nice list.

Some of my local radio club members & I have some of those frequencies programmed into our gear for "other than" HAM use.  They come in handy.

Thanks for the link.  +1

Offline Beetle

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Re: Itinerant frequencies for SHTF comms- a discussion
« Reply #3 on: August 06, 2009, 01:04:37 PM »
155.805 is SAR for Oregon

Offline radiomaster

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Re: Itinerant frequencies for SHTF comms- a discussion
« Reply #4 on: June 29, 2013, 12:05:39 AM »
Some itinerant freqs from the main SHTF Survivalist Frequency List
Itinerant channels are great for tactical and patrols.

CHAN. | FREQUENCY MHZ| NOTES
===== | ============ | ==================
20 == | 462.675+ FM =| PL 141.3 REPEATER (ORANGE DOT ITINERANT)
3 === | 151.9400 FM =| PREPPER MURS (ITINERANT)
LOW = | 033.4000 FM =| SHTF SURVIVAL (ITINERANT)
PKDOT | 042.9800 FM =| PREPPER LOW SIMPLEX (PINK DOT ITINERANT) 


LOWBAND VHF | PKDOT | 42.9800 FM | PREPPER LOW SIMPLEX
42.98 MHz is an old Low Band VHF itinerant business channel with a 2 watt limit. It is the Pink Dot channel, for those who are familiar with the Blue Dot, Red Dot, Purple Dot, etc. and similar "Color Dot" series used by 2-way radio marketing and event rental radios. Very few businesses still use VHF Low Band, because most have gone to cell phones. So the handhelds, portables, or mobiles for it are cheap at flea markets, garage sales, and online auctions. Also, 49 MHz walkie talkies and headsets can be modified for this frequency by changing the crystals. Useful for patrols and tactical communications. All scanners can receive this channel.

LOWBAND VHF | LOW | 33.4000 FM | SHTF SURVIVAL
33.4 MHz is an ancient Low Band VHF FM itinerant business channel with a 1 watt limit. Popular among reenactors, survivalists, and bulletproof-radio enthusiasts using old military surplus manpacks or military handheld sets on this channel (especially PRC-77). The reason they use 33.4 is probably because it is the only low power itinerant channel that old green manpacks can select with their 50 kHz or 25 kHz channel spacing dials. At low power in the field, they aren't bothering anybody. Useful for patrols and tactical communications. All scanners can receive this channel.
« Last Edit: June 29, 2013, 12:13:05 AM by radiomaster »

Offline doublehelix

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Re: Itinerant frequencies for SHTF comms- a discussion
« Reply #5 on: June 29, 2013, 09:06:22 AM »
So except for GMRS, are these "prepper" frequencies all carrier squelch TX/RX ?

I'd like to see some prepper standardization on CTCSS, DCS and P25 NAC's like the Federal/State interop channels use.

eg:  156.7 ctcss is standard for analog.


Offline radiomaster

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Re: Itinerant frequencies for SHTF comms- a discussion
« Reply #6 on: June 29, 2013, 01:35:37 PM »
The listings for FM Simplex are all carrier squelch receiver.
=
There is some advantage to transmitting a PL 151.4 to include those who may be using CTCSS.
Continuous Tone Coded Squelch System:
Interoperability with surplus military radios is desirable using Mil Tone Squelch frequency 150 Hz, compatible with PL tone and CTCSS radios using PL 151.4 Hz.  This tone is also known as Motorola Code 4A or National Interagency Fire Center code NIFC 14.
=
P25 can be used on the FM Simplex channels listed.
Recommended Network Access Code NAC $F7E
(Using NAC $F7E, receiver will unsquelch with any incoming NAC)

Everyone - Talk Group ID TGID $FFFF
Individual Unit ID can be anything between $000001 and $98767F
Unit ID for (All Call) everyone, Group call $FFFFFF
=
Digital-Coded Squelch (DCS) or Digital Private Line (DPL) or Digital Channel Guard (DCG)
Not recommended due to interoperability issues.
If used: DCS 023.