Difference between revisions of "1.25 Meter Ham Radio Band"

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One of the challenges for ham operators is the lack of 1.25-meter radio equipment available on the commercial market.  As of this writing there is no current all-mode amateur transceiver for this band.  Any all mode transceivers are out of production, and the small handful of current production models are FM only.  [[1.25 Meter Ham Radio Transceivers]] are primarily FM mode.
 
One of the challenges for ham operators is the lack of 1.25-meter radio equipment available on the commercial market.  As of this writing there is no current all-mode amateur transceiver for this band.  Any all mode transceivers are out of production, and the small handful of current production models are FM only.  [[1.25 Meter Ham Radio Transceivers]] are primarily FM mode.
  
 +
<div id="content"><div id="ZONE-C"><div id="f-widget-145865" class="f-widget f-text_area">
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 +
== Band Plan ==
 +
 +
<div class="article">
 +
 +
A band  plan refers to a voluntary division of a band to avoid interference between incompatible modes.'''<span><br /></span>'''
 +
 +
=== Resources ===
 +
 +
* [/part-97-amateur-radio Sharing arrangements]
 +
* [/files/file/8803051.pdf Detailed packet frequencies] [PDF]
 +
* [/phone-patch-guidelines Phone patch, autopatch and HF/VHF/UHF operating guidelines]
 +
* [/considerate-operator "Considerate Operator's Frequency Guide"]
 +
 +
=== 160 Meters (1.8-2.0 MHz) ===
 +
 +
{| class="striped"
 +
|- class="alt"
 +
| 1.800 - 2.000
 +
| CW
 +
|-
 +
| 1.800 - 1.810
 +
| Digital Modes
 +
|- class="alt"
 +
| 1.810
 +
| CW QRP
 +
|-
 +
| 1.843-2.000
 +
| SSB, SSTV and other wideband modes
 +
|- class="alt"
 +
| 1.910
 +
| SSB QRP
 +
|-
 +
| 1.995 - 2.000
 +
| Experimental
 +
|- class="alt"
 +
| 1.999 - 2.000
 +
| Beacons
 +
|}
 +
 +
=== 80 Meters (3.5-4.0 MHz) ===
 +
 +
{| class="striped"
 +
|- class="alt"
 +
| 3.590
 +
| RTTY/Data DX
 +
|-
 +
| 3.570-3.600
 +
| RTTY/Data
 +
|- class="alt"
 +
| 3.790-3.800
 +
| DX window
 +
|-
 +
| 3.845
 +
| SSTV
 +
|- class="alt"
 +
| 3.885
 +
| AM calling frequency
 +
|}
 +
 +
=== 60 Meters (5 MHz channels) ===
 +
 +
<nowiki>*Only one signal at a time is permitted on any channel</nowiki>
 +
 +
<nowiki>*Maximum effective radiated output is 100 W PEP</nowiki>
 +
 +
{| class="striped"
 +
|- class="alt"
 +
| 5330.5
 +
|
 +
USB phone[#one <sup>1</sup>] and CW/RTTY/data[#two <sup>2</sup>]
 +
|-
 +
| 5346.5
 +
|
 +
USB phone[#one <sup>1</sup>] and CW/RTTY/data[#two <sup>2</sup>]
 +
|- class="alt"
 +
| 5357.0
 +
|
 +
USB phone[#one <sup>1</sup>] and CW/RTTY/data[#two <sup>2</sup>]
 +
|-
 +
| 5371.5
 +
|
 +
USB phone[#one <sup>1</sup>] and CW/RTTY/data[#two <sup>2</sup>]
 +
|- class="alt"
 +
| 5403.5
 +
|
 +
USB phone[#one <sup>1</sup>] and CW/RTTY/data[#two <sup>2</sup>]
 +
|}
 +
 +
===  ===
 +
 +
'''1. '''USB is limited to 2.8 kHz
 +
 +
'''2. '''CW and digital emissions must be centered 1.5 kHz above the channel frequencies indicated in the above chart
 +
 +
=== 40 Meters (7.0-7.3 MHz) ===
 +
 +
{| class="striped"
 +
|- class="alt"
 +
| 7.040
 +
| RTTY/Data DX
 +
|-
 +
| 7.080-7.125
 +
| RTTY/Data
 +
|- class="alt"
 +
| 7.171
 +
| SSTV
 +
|-
 +
| 7.290
 +
| AM calling frequency
 +
|}
 +
 +
=== 30 Meters (10.1-10.15 MHz) ===
 +
 +
{| class="striped"
 +
|- class="alt"
 +
| 10.130-10.140
 +
| RTTY
 +
|-
 +
| 10.140-10.150
 +
| Packet
 +
|}
 +
 +
=== 20 Meters (14.0-14.35 MHz) ===
 +
 +
{| class="striped"
 +
|- class="alt"
 +
| 14.070-14.095
 +
| RTTY
 +
|-
 +
| 14.095-14.0995
 +
| Packet
 +
|- class="alt"
 +
| 14.100
 +
| NCDXF Beacons
 +
|-
 +
| 14.1005-14.112
 +
| Packet
 +
|- class="alt"
 +
| 14.230
 +
| SSTV
 +
|-
 +
| 14.286
 +
| AM calling frequency
 +
|}
 +
 +
=== 17 Meters (18.068-18.168 MHz) ===
 +
 +
{| class="striped"
 +
|- class="alt"
 +
| 18.100-18.105
 +
| RTTY
 +
|-
 +
| 18.105-18.110
 +
| Packet
 +
|}
 +
 +
=== 15 Meters (21.0-21.45 MHz) ===
 +
 +
{| class="striped"
 +
|- class="alt"
 +
| 21.070-21.110
 +
| RTTY/Data
 +
|-
 +
| 21.340
 +
| SSTV
 +
|}
 +
 +
=== 12 Meters (24.89-24.99 MHz) ===
 +
 +
{| class="striped"
 +
|- class="alt"
 +
| 24.920-24.925
 +
| RTTY
 +
|-
 +
| 24.925-24.930
 +
| Packet
 +
|}
 +
 +
=== 10 Meters (28-29.7 MHz) ===
 +
 +
{| class="striped"
 +
|- class="alt"
 +
| 28.000-28.070
 +
| CW
 +
|-
 +
| 28.070-28.150
 +
| RTTY
 +
|- class="alt"
 +
| 28.150-28.190
 +
| CW
 +
|-
 +
| 28.200-28.300
 +
| Beacons
 +
|- class="alt"
 +
| 28.300-29.300
 +
| Phone
 +
|-
 +
| 28.680
 +
| SSTV
 +
|- class="alt"
 +
| 29.000-29.200
 +
| AM
 +
|-
 +
| 29.300-29.510
 +
| Satellite Downlinks
 +
|- class="alt"
 +
| 29.520-29.590
 +
| Repeater Inputs
 +
|-
 +
| 29.600
 +
| FM Simplex
 +
|- class="alt"
 +
| 29.610-29.700
 +
| Repeater Outputs
 +
|}
 +
 +
=== 6 Meters (50-54 MHz) ===
 +
 +
{| class="striped"
 +
|- class="alt"
 +
| 50.0-50.1
 +
| CW, beacons
 +
|-
 +
| 50.060-50.080
 +
| beacon subband
 +
|- class="alt"
 +
| 50.1-50.3
 +
| SSB, CW
 +
|-
 +
| 50.10-50.125
 +
| DX window
 +
|- class="alt"
 +
| 50.125
 +
| SSB calling
 +
|-
 +
| 50.3-50.6
 +
| All modes
 +
|- class="alt"
 +
| 50.6-50.8
 +
| Nonvoice communications
 +
|-
 +
| 50.62
 +
| Digital (packet) calling
 +
|- class="alt"
 +
| 50.8-51.0
 +
| Radio remote control (20-kHz channels)
 +
|-
 +
| 51.0-51.1
 +
| Pacific DX window
 +
|- class="alt"
 +
| 51.12-51.48
 +
| Repeater inputs (19 channels)
 +
|-
 +
| 51.12-51.18
 +
| Digital repeater inputs
 +
|- class="alt"
 +
| 51.5-51.6
 +
|
 +
Simplex (six channels)
 +
|-
 +
| 51.62-51.98
 +
| Repeater outputs (19 channels)
 +
|- class="alt"
 +
| 51.62-51.68
 +
| Digital repeater outputs
 +
|-
 +
| 52.0-52.48
 +
| Repeater inputs (except as noted; 23 channels)
 +
|- class="alt"
 +
| 52.02, 52.04
 +
| FM simplex
 +
|-
 +
| 52.2
 +
| TEST PAIR (input)
 +
|- class="alt"
 +
| 52.5-52.98
 +
| Repeater output (except as noted; 23 channels)
 +
|-
 +
| 52.525
 +
| Primary FM simplex
 +
|- class="alt"
 +
| 52.54
 +
| Secondary FM simplex
 +
|-
 +
| 52.7
 +
| TEST PAIR (output)
 +
|- class="alt"
 +
| 53.0-53.48
 +
| Repeater inputs (except as noted; 19 channels)
 +
|-
 +
| 53.0
 +
| Remote base FM simplex
 +
|- class="alt"
 +
| 53.02
 +
| Simplex
 +
|-
 +
| 53.1, 53.2, 53.3, 53.4
 +
| Radio remote control
 +
|- class="alt"
 +
| 53.5-53.98
 +
| Repeater outputs (except as noted; 19 channels)
 +
|-
 +
| 53.5, 53.6, 53.7, 53.8
 +
| Radio remote control
 +
|- class="alt"
 +
| 53.52, 53.9
 +
| Simplex
 +
|}
 +
 +
=== 2 Meters (144-148 MHz) ===
 +
 +
{| class="striped"
 +
|- class="alt"
 +
| 144.00-144.05
 +
| EME (CW)
 +
|-
 +
| 144.05-144.10
 +
| General CW and weak signals
 +
|- class="alt"
 +
| 144.10-144.20
 +
| EME and weak-signal SSB
 +
|-
 +
| 144.200
 +
| National calling frequency
 +
|- class="alt"
 +
| 144.200-144.275
 +
| General SSB operation
 +
|-
 +
| 144.275-144.300
 +
| Propagation beacons
 +
|- class="alt"
 +
| 144.30-144.50
 +
| New OSCAR subband
 +
|-
 +
| 144.50-144.60
 +
| Linear translator inputs
 +
|- class="alt"
 +
| 144.60-144.90
 +
| FM repeater inputs
 +
|-
 +
| 144.90-145.10
 +
| Weak signal and FM simplex (145.01,03,05,07,09 are widely used for packet)
 +
|- class="alt"
 +
| 145.10-145.20
 +
| Linear translator outputs
 +
|-
 +
| 145.20-145.50
 +
| FM repeater outputs
 +
|- class="alt"
 +
| 145.50-145.80
 +
| Miscellaneous and experimental modes
 +
|-
 +
| 145.80-146.00
 +
| OSCAR subband
 +
|- class="alt"
 +
| 146.01-146.37
 +
| Repeater inputs
 +
|-
 +
| 146.40-146.58
 +
| Simplex
 +
|- class="alt"
 +
| 146.52
 +
| National Simplex Calling Frequency
 +
|-
 +
| 146.61-146.97
 +
| Repeater outputs
 +
|- class="alt"
 +
| 147.00-147.39
 +
| Repeater outputs
 +
|-
 +
| 147.42-147.57
 +
| Simplex
 +
|- class="alt"
 +
| 147.60-147.99
 +
| Repeater inputs
 +
|}
 +
 +
'''Notes:''' The frequency 146.40 MHz is used in some areas as a repeater input. This band plan has been proposed by the ARRL VHF-UHF Advisory Committee.
 +
 +
=== 1.25 Meters (222-225 MHz) ===
 +
 +
{| class="striped"
 +
|- class="alt"
 +
| 222.0-222.150
 +
| Weak-signal modes
 +
|-
 +
| 222.0-222.025
 +
| EME
 +
|- class="alt"
 +
| 222.05-222.06
 +
| Propagation beacons
 +
|-
 +
| 222.1
 +
| SSB &amp; CW calling frequency
 +
|- class="alt"
 +
| 222.10-222.15
 +
| Weak-signal CW &amp; SSB
 +
|-
 +
| 222.15-222.25
 +
| Local coordinator's option; weak signal, ACSB, repeater inputs, control
 +
|- class="alt"
 +
| 222.25-223.38
 +
| FM repeater inputs only
 +
|-
 +
| 223.40-223.52
 +
| FM simplex
 +
|- class="alt"
 +
| 223.52-223.64
 +
| Digital, packet
 +
|-
 +
| 223.64-223.70
 +
| Links, control
 +
|- class="alt"
 +
| 223.71-223.85
 +
| Local coordinator's option; FM simplex, packet, repeater outputs
 +
|-
 +
| 223.85-224.98
 +
| Repeater outputs only
 +
|}
 +
 +
'''Note:''' The 222 MHz band plan was adopted by the ARRL Board of Directors in July 1991.
 +
 +
</div></div></div></div>
  
  

Revision as of 14:16, 31 July 2016

The 1.25-meter amateur radio band is a portion of the VHF radio spectrum, comprising frequencies stretching from 222 MHz to 225 MHz. Other names for this ham band include the 220 band and the 222 band. The FCC took away from ham operators frequencies from 220 MHz to 222 MHz in 1988. There remains a secondary allocation for amateur use at 219-220 MHz, however, FM voice is not permitted within this secondary allocation.

In 2001 the FCC allocated the 216-220 MHz band to the fixed and mobile services (co-primary), although some government systems in the band will remain. The decision was made that limited secondary allocation to the Amateur Service at 219-220 MHz is being maintained. The amateur allocation at 219-220 MHz is secondary to the Automated Maritime Telecommunications System (AMTS). Within the 1 MHz of spectrum, Amateurs may install and operate point-to-point digital message-forwarding systems, but only under strict limitations that require coordination with and sometimes approval by AMTS licensees. As the FCC takes more spectrum away from other users, including hams, and auctions it off for private business use, the ARRL and ham operators will continue to lose ground unless a change occurs in the current political climate.

One of the challenges for ham operators is the lack of 1.25-meter radio equipment available on the commercial market. As of this writing there is no current all-mode amateur transceiver for this band. Any all mode transceivers are out of production, and the small handful of current production models are FM only. 1.25 Meter Ham Radio Transceivers are primarily FM mode.

Band Plan

A band  plan refers to a voluntary division of a band to avoid interference between incompatible modes.

Resources

  • [/part-97-amateur-radio Sharing arrangements]
  • [/files/file/8803051.pdf Detailed packet frequencies] [PDF]
  • [/phone-patch-guidelines Phone patch, autopatch and HF/VHF/UHF operating guidelines]
  • [/considerate-operator "Considerate Operator's Frequency Guide"]

160 Meters (1.8-2.0 MHz)

1.800 - 2.000 CW
1.800 - 1.810 Digital Modes
1.810 CW QRP
1.843-2.000 SSB, SSTV and other wideband modes
1.910 SSB QRP
1.995 - 2.000 Experimental
1.999 - 2.000 Beacons

80 Meters (3.5-4.0 MHz)

3.590 RTTY/Data DX
3.570-3.600 RTTY/Data
3.790-3.800 DX window
3.845 SSTV
3.885 AM calling frequency

60 Meters (5 MHz channels)

*Only one signal at a time is permitted on any channel

*Maximum effective radiated output is 100 W PEP

5330.5

USB phone[#one 1] and CW/RTTY/data[#two 2]

5346.5

USB phone[#one 1] and CW/RTTY/data[#two 2]

5357.0

USB phone[#one 1] and CW/RTTY/data[#two 2]

5371.5

USB phone[#one 1] and CW/RTTY/data[#two 2]

5403.5

USB phone[#one 1] and CW/RTTY/data[#two 2]

1. USB is limited to 2.8 kHz

2. CW and digital emissions must be centered 1.5 kHz above the channel frequencies indicated in the above chart

40 Meters (7.0-7.3 MHz)

7.040 RTTY/Data DX
7.080-7.125 RTTY/Data
7.171 SSTV
7.290 AM calling frequency

30 Meters (10.1-10.15 MHz)

10.130-10.140 RTTY
10.140-10.150 Packet

20 Meters (14.0-14.35 MHz)

14.070-14.095 RTTY
14.095-14.0995 Packet
14.100 NCDXF Beacons
14.1005-14.112 Packet
14.230 SSTV
14.286 AM calling frequency

17 Meters (18.068-18.168 MHz)

18.100-18.105 RTTY
18.105-18.110 Packet

15 Meters (21.0-21.45 MHz)

21.070-21.110 RTTY/Data
21.340 SSTV

12 Meters (24.89-24.99 MHz)

24.920-24.925 RTTY
24.925-24.930 Packet

10 Meters (28-29.7 MHz)

28.000-28.070 CW
28.070-28.150 RTTY
28.150-28.190 CW
28.200-28.300 Beacons
28.300-29.300 Phone
28.680 SSTV
29.000-29.200 AM
29.300-29.510 Satellite Downlinks
29.520-29.590 Repeater Inputs
29.600 FM Simplex
29.610-29.700 Repeater Outputs

6 Meters (50-54 MHz)

50.0-50.1 CW, beacons
50.060-50.080 beacon subband
50.1-50.3 SSB, CW
50.10-50.125 DX window
50.125 SSB calling
50.3-50.6 All modes
50.6-50.8 Nonvoice communications
50.62 Digital (packet) calling
50.8-51.0 Radio remote control (20-kHz channels)
51.0-51.1 Pacific DX window
51.12-51.48 Repeater inputs (19 channels)
51.12-51.18 Digital repeater inputs
51.5-51.6

Simplex (six channels)

51.62-51.98 Repeater outputs (19 channels)
51.62-51.68 Digital repeater outputs
52.0-52.48 Repeater inputs (except as noted; 23 channels)
52.02, 52.04 FM simplex
52.2 TEST PAIR (input)
52.5-52.98 Repeater output (except as noted; 23 channels)
52.525 Primary FM simplex
52.54 Secondary FM simplex
52.7 TEST PAIR (output)
53.0-53.48 Repeater inputs (except as noted; 19 channels)
53.0 Remote base FM simplex
53.02 Simplex
53.1, 53.2, 53.3, 53.4 Radio remote control
53.5-53.98 Repeater outputs (except as noted; 19 channels)
53.5, 53.6, 53.7, 53.8 Radio remote control
53.52, 53.9 Simplex

2 Meters (144-148 MHz)

144.00-144.05 EME (CW)
144.05-144.10 General CW and weak signals
144.10-144.20 EME and weak-signal SSB
144.200 National calling frequency
144.200-144.275 General SSB operation
144.275-144.300 Propagation beacons
144.30-144.50 New OSCAR subband
144.50-144.60 Linear translator inputs
144.60-144.90 FM repeater inputs
144.90-145.10 Weak signal and FM simplex (145.01,03,05,07,09 are widely used for packet)
145.10-145.20 Linear translator outputs
145.20-145.50 FM repeater outputs
145.50-145.80 Miscellaneous and experimental modes
145.80-146.00 OSCAR subband
146.01-146.37 Repeater inputs
146.40-146.58 Simplex
146.52 National Simplex Calling Frequency
146.61-146.97 Repeater outputs
147.00-147.39 Repeater outputs
147.42-147.57 Simplex
147.60-147.99 Repeater inputs

Notes: The frequency 146.40 MHz is used in some areas as a repeater input. This band plan has been proposed by the ARRL VHF-UHF Advisory Committee.

1.25 Meters (222-225 MHz)

222.0-222.150 Weak-signal modes
222.0-222.025 EME
222.05-222.06 Propagation beacons
222.1 SSB & CW calling frequency
222.10-222.15 Weak-signal CW & SSB
222.15-222.25 Local coordinator's option; weak signal, ACSB, repeater inputs, control
222.25-223.38 FM repeater inputs only
223.40-223.52 FM simplex
223.52-223.64 Digital, packet
223.64-223.70 Links, control
223.71-223.85 Local coordinator's option; FM simplex, packet, repeater outputs
223.85-224.98 Repeater outputs only

Note: The 222 MHz band plan was adopted by the ARRL Board of Directors in July 1991.

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