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SERA FREQUENCY UTILIZATION PLAN for 420-450
MHz
420.0000 -
420.2000 Repeater Links
420.0000 -
426.0000 ATV Repeater
Output
421.250 Video - 425.750 Audio
426.0000 -
432.0000 ATV
Simplex
427.250 Video - 431.750 Audio
432.0000 - 433.0000 SSB
& Weak
Signal
432.100 National SSB Calling Frequency
433.0125 -
433.2000 Repeater Links
433.0000 -
439.0000 ATV Simplex
Only
434.000 Video - 438.500 Audio
438.7750 - 439.5875
Repeater Links
439.6000 - 440.4750 FM Digital/Packet
Operation
440.5125 - 440.7250 Narrow Band Digital
Repeater Outputs/Duplex Backbones/Link
440.7375 -
440.9000 Simplex Cross Band Voice - Base
440.9125 -
441.1750 Simplex Digital
441.1875 -
441.4875 Links, Control
Frequencies
441.5000
Simplex
Digital
441.000 National Digital Calling Frequency
441.5250 -
441.7750 Duplex Link Repeaters
441.8000 -
444.9750 FM, APCO P25 and D-Star Repeater
Outputs
445.0250 - 445.4750 Digital
445.5125 -
445.7250 Digital Repeater Inputs
445.7375 -
445.9000 Simplex Cross Band Voice -
445.9125 -
446.1750 FM
Simplex
446.000 National FM Calling Frequency
446.1875 -
446.4875 Links, Control
Frequencies
446.5000
Simplex Digital
446.5250 - 446.7750 Duplex Link
Repeaters
446.8000 - 449.9750 FM, APCO P25 and D-Star
Repeater Inputs
Voice FM
Simplex Frequencies
22 Simplex FM Voice
Channels
445.9125
445.9250 445.9375 445.9500
445.9625 445.9750 445.9875 446.0000
*
446.0125 446.0250 446.0375
446.0500 446.0625 446.0750
446.0875 446.1000
446.1125 446.1250
446.1375 446.1500 446.1625
446.1750
* 446.000 is the National FM Voice
Simplex Calling Frequency
Narrow Band
FM Digital/Packet Repeater or
Digital/Packet Duplex
Backbone
18 Duplex Channels, 12.5 KHz
split, 5 MHz split, High input - Low output
445.5125 -
440.5125 445.5250 - 440.5250 445.5375 -
440.5375 445.5500 - 440.5500
445.5625 -
440.5625 445.5750 - 440.5750 445.5875 -
440.5875 445.6000 - 440.6000
445.6125 -
440.6125 445.6250 - 440.6250 445.6375 -
440.6375 445.6500 - 440.6500
445.6625 -
440.6625 445.6750 - 440.6750 445.6875 -
440.6875 445.7000 - 440.7000
445.7125 -
440.7125 445.7250 - 440.7250
Wide Band
Digital/Packet Duplex
Backbones/Links
19 Duplex, Mixed 50/100 KHz, 5
MHz split, High input, Low output, horizontal or vertical polarization
optional
445.0250 -
440.0250 445.0500 - 440.0500 445.0750 -
440.0750 445.1000 - 440.1000
445.1250 -
440.1250 445.1500 - 440.1500 445.1750 -
440.1750 445.2000 - 440.2000
445.2250 -
440.2250 445.2500 - 440.2500 445.2750 -
440.2750 445.3000 - 440.3000
445.3250 -
440.3250 445.3500 - 440.3500 445.3750 -
440.3750 445.4000 - 440.4000
445.4250 -
440.4250 445.4500 - 440.4500 445.4750 -
440.4750
Narrow Band
FM Digital/Packet
Simplex
440.9125
440.9250 440.9375 440.9500
440.9625 440.9750 440.9875
441.0000 *
441.0125 441.0250
441.0375 441.0500 441.0625
441.0750 441.0875
441.1000
441.1125 441.1250
441.1375 441.1500 441.1625
441.1750
* 441.000 is the National Digital Simplex Calling
Frequency
Standard FM
Repeaters
128 Repeater Pairs, 25 KHz
spacing, 5 MHz split, High input, Low output
446.8000 -
441.8000 446.8250 -
441.8250 446.8500 -
441.8500 446.8750 - 441.8750
446.9000 -
441.9000 446.9250 -
441.9250 446.9500 -
441.9500 446.9750 - 441.9750
447.0000 -
442.0000 447.0250 -
442.0250 447.0500 -
442.0500 447.0750 - 442.0750
447.1000 -
442.1000 447.1250 -
442.1250 447.1500 -
442.1500 447.1750 - 442.1750
447.2000 -
442.2000 447.2250 -
442.2250 447.2500 -
442.2500 447.2750 - 442.2750
447.3000 -
442.3000 447.3250 -
442.3250 447.3500 -
442.3500 447.3750 - 442.3750
447.4000 -
442.4000 447.4250 -
442.4250 447.4500 -
442.4500 447.4750 - 442.4750
447.5000 -
442.5000 447.5250 -
442.5250 447.5500 -
442.5500 447.5750 - 442.5750
447.6000 -
442.6000 447.6250 -
442.6250 447.6500 -
442.6500 447.6750 - 442.6750
447.7000 -
442.7000 447.7250 -
442.7250 447.7500 -
442.7500 447.7750 - 442.7750
447.8000 -
442.8000 447.8250 -
442.8250 447.8500 -
442.8500 447.8750 - 442.8750
447.9000 -
442.9000 447.9250 -
442.9250 447.9500 -
442.9500 447.9750 - 442.9750
448.0000 -
443.0000 448.0250 -
443.0250 448.0500 -
443.0500 448.0750 - 443.0750
448.1000 -
443.1000 448.1250 -
443.1250 448.1500 -
443.1500 448.1750 - 443.1750
448.2000 -
443.2000 448.2250 -
443.2250 448.2500 -
443.2500 448.2750 - 443.2750
448.3000 -
443.3000 448.3250 -
443.3250 448.3500 -
443.3500 448.3750 - 443.3750
448.4000 -
443.4000 448.4250 -
443.4250 448.4500 -
443.4500 448.4750 - 448.4750
448.5000 -
443.5000 448.5250 -
443.5250 448.5500 -
443.5500 448.5750 - 443.5750
448.6000 -
443.6000 448.6250 -
443.6250 448.6500 -
443.6500 448.6750 - 443.6750
448.7000 -
443.7000 448.7250 -
443.7250 448.7500 -
433.7500 448.7750 - 443.7750
448.8000 -
443.8000 448.8250 -
443.8250 448.8500 -
443.8500 448.8750 - 443.8750
448.9000 -
443.9000 448.9250 -
443.9250 448.9500 -
443.9500 448.9750 - 443.9750
449.0000 -
444.0000 449.0250 -
444.0250 449.0500 -
444.0500 449.0750 - 444.0750
449.1000 -
444.1000 449.1250 -
444.1250 449.1500 -
444.1500 449.1750 - 444.1750
449.2000 -
444.2000 449.2250 -
444.2250 449.2500 -
444.2500 449.2750 - 444.2750
449.3000 -
444.3000 449.3250 -
444.3250 449.3500 -
444.3500 449.3750 - 444.3750
449.4000 -
444.4000 449.4250 -
444.4250 449.4500 -
444.4500 449.4750 - 444.4750
449.5000 -
444.5000 449.5250 -
444.5250 449.5500 -
444.5500 449.5750 - 444.5750
449.6000 -
444.6000 449.6250 -
444.6250 449.6500 -
444.6500 449.6750 - 444.6750
449.7000 -
444.7000 449.7250 -
444.7250 449.7500 -
444.7500 449.7750 - 444.7750
449.8000 -
444.8000 449.8250 -
444.8250 449.8500 -
444.8500 449.8750 - 444.8750
449.9000 -
444.9000 449.9250 -
444.9250 449.9500 -
444.9500 449.9750 - 444.9750
These
pairs are available for the coordination and assignment of analog FM
repeaters. Their coordination
and
assignment is determined using nominal FM coordination guidelines and other
considerations, and those pertinent
to co-channel and adjacent channel
assignment.
APCO P25
& D-Star Repeaters
128 Repeater Pairs, 25 KHz
spacing, 5 MHz split, High input, Low output
446.8125 - 441.8125 446.8375 -
441.8375 446.8625 -
441.8625 446.8875 - 441.8875
446.9125 -
441.9125 446.9375 -
441.9375 446.9625 -
441.9625 446.9875 - 441.9875
447.0125 -
442.0125 447.0375 -
442.0375 447.0625 -
442.0625 447.0875 - 442.0875
447.1125 -
442.1125 447.1375 -
442.1375 447.1625 -
442.1625 447.1875 - 442.1875
447.2125 -
442.2125 447.2375 -
442.2375 447.2625 -
442.2625 447.2875 - 442.2875
447.3125 -
442.3125 447.3375 -
442.3375 447.3625 -
442.3625 447.3875 - 442.3875
447.4125 -
442.4125 447.4375 -
442.4375 447.4625 -
442.4625 447.4875 - 442.4875
447.5125 -
442.5125 447.5375 -
442.5375 447.5625 -
442.5625 447.5875 - 442.5875
447.6125 -
442.6125 447.6375 -
442.6375 447.6625 -
442.6625 447.6875 - 442.6875
447.7125 -
442.7125 447.7375 -
442.7375 447.7625 -
442.7625 447.7875 - 442.7875
447.8125 -
442.8125 447.8375 -
442.8375 447.8625 -
442.8625 447.8875 - 442.8875
447.9125 -
442.9125 447.9375 -
442.9375 447.9625 -
442.9625 447.9875 - 442.9875
448.0125 -
443.0125 448.0375 -
443.0375 448.0625 -
443.0625 448.0875 - 443.0875
448.1125 -
443.1125 448.1375 -
443.1375 448.1625 -
443.1625 448.1875 - 443.1875
448.2125 -
443.2125 448.2375 -
443.2375 448.2625 -
443.2625 448.2875 - 443.2875
448.3125 -
443.3125 448.3375 -
443.3375 448.3625 -
443.3625 448.3875 - 443.3875
448.4125 -
443.4125 448.4375 -
443.4375 448.4625 -
443.4625 448.4875 - 443.4875
448.5125 -
443.5125 448.5375 -
443.5375 448.5625 -
443.5625 448.5875 - 443.5875
448.6125 -
443.6125 448.6375 -
443.6375 448.6625 -
443.6625 448.6875 - 443.6875
448.7125 -
443.7125 448.7375 -
443.7375 448.7625 -
443.7625 448.7875 - 443.7875
448.8125 -
443.8125 448.8375 -
443.8375 448.8625 -
443.8625 448.8875 - 443.8875
448.9125 -
443.9125 448.9375 -
443.9375 448.9625 -
443.9625 448.9875 - 443.9875
449.0125 -
444.0125 449.0375 -
444.0375 449.0625 -
444.0625 449.0875 - 444.0875
449.1125 -
444.1125 449.1375 -
444.1375 449.1625 -
444.1625 449.1875 - 444.1875
449.2125 -
444.2125 449.2375 -
444.2375 449.2625 -
444.2625 449.2875 - 444.2875
449.3125 -
444.3125 449.3375 -
444.3375 449.3625 -
444.3625 449.3875 - 444.3875
449.4125 -
444.4125 449.4375 -
444.4375 449.4625 -
444.4625 449.4875 - 444.4875
449.5125 -
444.5125 449.5375 -
444.5375 449.5625 -
444.5625 449.5875 - 444.5875
449.6125 -
444.6125 449.6375 -
444.6375 449.6625 -
444.6625 449.6875 - 444.6875
449.7125 -
444.7125 449.7375 -
444.7375 449.7625 -
444.7625 449.7875 - 444.7875
449.8125 -
444.8125 449.8375 -
444.8375 449.8625 -
444.8625 449.8875 - 444.8875
449.9125 -
444.9125 449.9375 -
444.9375 449.9625 -
444.9625 449.9875 - 444.9875
These
interleaved pairs are exclusively available for the coordination and assignment
of APCO P25 and
D-Star digital voice technology (DVT) repeaters. Their
coordination and assignment is determined using nominal
FM coordination
guidelines and other considerations relating to the narrow bandwidth signals of
DVT and those
pertinent to co-channel and
adjacent channel assignment.
FM
Itinerant Voice Repeaters
2 Repeater Pairs, 25 KHz
spacing between channels, 5 MHz split, High input, Low output
445.750 -
440.750 445.800 -
440.800
Reserved for itinerant and
short term use during a special event or emergency with no formal coordination
required.
Trustees/Owners are encouraged to notify their local coordinator to
inform them of system parameters and expected
duration of
use.
FM Cross
Band Repeat Simplex (NBFM)
Channels for Fixed Stations
ONLY, 12 Simplex Channels, for Fixed Cross Band Repeat
440.7375
440.7625 440.7750 440.7875
440.8125
440.8250
440.8375
440.8500 440.8625 440.8750
440.8875 440.9000
Channels for Mobile
Stations ONLY, 12 Simplex Channels, for Mobile Cross Band
Repeat
445.7375
445.7625 445.7750 445.7875
445.8125 445.8250
445.8375
445.8500 445.8625 445.8750
445.8875 445.9000
Link &
Control Channels (Narrow Band FM)
May be paired on "440", or
individually paired with 222 MHz band fixed link frequencies.
May be
individually coordinated. Some may be coordinated as simplex remote base
or
remote control systems.
446.1875 -
441.1875 446.2000 -
441.2000 446.2125 -
441.2125 446.2250 -
441.2250
446.2375 - 441.2375
446.2500 - 441.2500 446.2625 -
441.2625 446.2750 -
441.2750
446.2875 -
441.2875 446.3000 -
441.3000 446.3125 -
441.3125 446.3250 - 441.3250
446.3375 -
441.3375 446.3500 -
441.3500 446.3625 -
441.3625 446.3750 -
441.3750
446.3875 - 441.3875
446.4000 - 441.4000 446.4125 -
441.4125 446.4250 -
441.4250
446.4375 - 441.4375
446.4500 - 441.4500 446.4625 -
441.4625 446.4750 - 441.4750
446.4875 -
441.4875
Duplex
"Hub" Linking Repeaters
11 Repeater Pairs, 25 KHz
spacing, 5 MHz split, High input, Low output, maximum 100w ERP.
446.525 -
441.525 446.550 - 441.550 446.575 -
441.575 446.600 - 441.600 446.625 -
441.625
446.650 - 441.650 446.675 -
441.675 446.700 - 441.700 446.725 -
441.725 446.750 - 441.750
446.775 -
441.775
These repeater pairs are
reserved for use as a wide area linking "hub" repeater that tie a group of
standard FM voice
repeaters together. The SERA strongly recommends this
method of linking rather that using in band or remote base
type
linking.
Link
Channels (Narrow Band FM)
These link channels share
designated ATV Bandwidths using horizontal antenna
polarity.
Frequencies will be coordinated with a maximum 25 watts ERP
and directional antenna systems.
420.0125
420.0250 420.0375 420.0500
420.0625 420.0750 420.0875
420.1000 420.1125
420.1250 420.1375
420.1500 420.1625 420.1750
420.1875 420.2000 433.0125
433.0250
433.0375 433.0500 433.0625
433.0750 433.0875 433.1000
433.1125 433.1250 433.1375
433.1500
433.1625 433.1750 433.1875
433.2000 438.7750 438.7875
438.8000 438.8125
438.8250 438.8375
438.8500 438.8625 438.8750
438.8875 438.9000 438.9125
438.9250
438.9375 438.9500 438.9625
438.9750 438.9875
439.0000*
439.0125* 439.0250* 439.0375*
439.0500* 439.0625* 439.0750*
439.0875*
439.1000* 439.1125* 439.1250*
439.1375* 439.1500* 439.1625*
439.1750* 439.1875*
439.2000*
439.2125* 439.2250* 439.2375*
439.2500* 439.2625* 439.2750*
439.2875*
439.3000* 439.3125*
439.3250* 439.3375* 439.3500*
439.3625* 439.3750* 439.3875*
439.4000*
439.4125* 439.4250* 439.4375*
439.4500* 439.4625* 439.4750*
439.4875*
439.5000* 439.5125* 439.5250*
439.5375* 439.5500* 439.5625*
439.5750* 439.5875*
* Link
frequencies above 439 MHz may use vertical polarity at the coordinator's
discretion.
NOTE:
Contact your respective SERA Director, Vice
Director, or Frequency Coordinator, for information about the need
for
coordination of your system, before installing and operating the system. Most
simplex voice and digital-packet operations
are itinerant in nature, and as
such will not be coordinated by SERA. Digital-Packet operators should contact
their local
digital-packet organization for additional information.
Simplex cross band voice, as is possible with most over the counter
dual band
radios, is also considered itinerant in nature and will not be coordinated;
however, users are asked to use the
assigned frequencies shown in this
document.
Approved
version 02/14/2000 @10:29 AM/EDT
FAL/HAHjr
Typographical error
CORRECTED 01/04/01 @ 23:20 PM/EST
HAHjr
Amended by action of the SERA Board
of Directors - 01/06/01
HAHjr
Changes to the SERA 144-148 MHz FUP approved by action of
the SERA Board of Directors on January 05, 2008.
HAHjr
interested viewers
since 02/07/08
Prior to amendment this page had been viewed 5,889
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