136KHz To 30m IARU Band Plans - G7SYW's amateur radio bits & bobs...
 
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136KHz To 30m IARU Band Plans

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General notes to the Band Plan

ITU-R Recommendation SM.328 (extract)
Necessary bandwidth: For a given class of emission, the width of the frequency band which is just sufficient to ensure the transmission of information at the rate and with the quality required under specified conditions.

The use of Amplitude Modulation (AM) is acceptable in the all modes segments but users are asked to consider adjacent channel activity when selecting operating frequencies.

Foundation and Intermediate Licence holders are advised to check their licences for the permitted power limits and conditions applicable to their class of licence.

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136KHz band

Frequency Bandwidth Preferred Modes and Usage
135.7 – 137.8 KHz   200 Hz CW, QRSS and narrow band digital modes

Notes

  1. RR 5.67A Stations in the amateur service using frequencies in this band shall not exceed a maximum radiated power of 1 W (e.i.r.p.) and shall not cause harmful interference to stations of the radio navigation service operating in countries listed in No. 5.67. (WRC-07)
  2. RR 5.67B The use of this band in Algeria, Egypt, Iran (Islamic Republic of), Iraq, Libyan Arab Jamahiriya, Lebanon, Syrian Arab Republic, Sudan and Tunisia is limited to the fixed and maritime mobile services. The amateur service shall not be used in the above-mentioned countries in the band 135.7-137.8 kHz, and this should be taken in account by the countries authorising such use. (WRC-07)

160m (Top Band – 1.8 MHz)

Frequency Bandwidth Preferred Modes and Usage
1.810 – 1.838 MHz   200 Hz CW – 1.836 MHz: QRP (low power) Centre of activity
1.838 – 1.840 MHz   500 Hz Narrow band modes
1.840 – 1.843 MHz   2.7 KHz All modes
1.843 – 2.000 MHz   2.7 KHz Telephony – Lowest LSB carrier frequency (dial setting) should be 1.843 MHz

Notes

  1. 1.810-1.850 MHz – Primary User: 1.810-1.830 MHz on a non-interference basis to stations outside of the UK.
  2. 1.850-2.000 MHz – Secondary User: 32W (15dBW) Maximum
  3. AX25 packet should not be used on the 1.8 MHz (160m) band.

80m (3.5 MHz)

Frequency Bandwidth Preferred Modes and Usage
3.500-3.510 MHz   200 Hz CW – Priority for inter-continental operation
3.510 – 3.560 MHz   200 Hz CW – contest preferred – 3.555 MHz: QRS (slow CW) Centre of Activity
3.560 – 3.570 MHz   200 Hz CW – 3.560 MHz: QRP (low power) Centre of Activity
3.570 – 3.580 MHz   200 Hz Narrow band modes
3.580 – 3.590 MHz   500 Hz Narrow band modes
3.590 – 3.600 MHz   500 Hz Narrow band modes – automatically controlled data stations (unattended)
3.600 – 3.620 MHz   2.7 KHz All modes – automatically controlled data stations (unattended) (Note 1)
3.600 – 3.650 MHz   2.7 KHz All modes – Phone contest preferred (Notes 1 and 2)
3.650 – 3.700 MHz   2.7 KHz All modes – Telephony, CW
3.663 MHz may be used for UK emergency comms traffic.
3.690 MHz SSB QRP (low power) Centre of Activity.
3.700 – 3.775 MHz   2.7 KHz All modes – Phone contest preferred
3.735 MHz Image mode Centre of Activity
3.760 MHz IARU Region 1 Emergency Centre of Activity
3.775 – 3.800 MHz   2.7 KHz All modes – Phone contest preferred
Priority for inter-continental telephony (SSB) operation

Notes

  1. Lowest LSB carrier frequency (dial setting) should be 3.603 MHz.
  2. 3.630 MHz – digital voice Center of Activity
  3. Shared with other user services

60m (5 MHz)

Frequency Bandwidth Preferred Modes and Usage
5.258 – 5.264 MHz   5.5 KHz 5.262 MHz – CW QRP (low power) Centre of Activity
5.276 – 5.284 MHz   8 KHz 5.2785 MHz – may be used for UK emergency comms traffic
5.288 – 5.292 MHz   3.5 KHz Beacons on 5.290 MHz (Note 2), WSPR
5.298 – 5.307 MHz   9 KHz
5.313 – 5.323 MHz   10 KHz AM – 5.317 MHz with 6kHz max. bandwidth
5.333 – 5.338 MHz   5 KHz
5.354 – 5.358 MHz   4 KHz
5.362 – 5.3745 MHz   12.5 KHz 5.362-5.370 MHz – Digital mode activity in the UK
5.378 – 5.383 MHz   4 KHz
5.395 – 5.4015 MHz   6.5 KHz
5.403 – 5.4065 MHz   3 KHz 5.4035 MHz – USB common international frequency

Notes

  1. Upper Sideband is recommended for SSB activity.
  2. Activity should avoid interference to the experimental beacons on 5.290 MHz
  3. Amplitude Modulation is permitted with a maximum bandwidth of 6kHz, on frequencies with at least 6kHz available width
  4. Full Licensees only – Secondary User: 100W max
    Note that specific conditions regarding operating, transmission bandwidth, power and antennas are specified in the Licence.

40m (7 MHz)

Frequency Bandwidth Preferred Modes and Usage
7.000 – 7.040 MHz   200 Hz CW – 7.030 MHz QRP (low power) Centre of Activity
7.040 – 7.047 MHz   500 Hz Narrow band modes (Note 2)
7.047 – 7.050 MHz   500 Hz Narrow band modes, automatically controlled data stations (unattended)
7.050 – 7.053 MHz   2.7 KHz All modes, automatically controlled data stations (unattended), (Note 1)
7.053 – 7.060 MHz   2.7 KHz All modes, digimodes
7.060 – 7.100 MHz   2.7 KHz All modes, SSB Contest Preferred Segment
7.070 MHz: Digital voice
7.090 MHz: SSB QRP Centre of Activity
7.100 – 7.130 MHz   2.7 KHz All modes, 7.110 MHz – Region 1 Emergency Centre of Activiity.
7.130 – 7.200 MHz   2.7 KHz All modes, SSB Contest Preferred Segment
7.165 MHz: Image Centre of Activity
7.175 – 7.200 MHz   2.7 KHz All modes, priority for intercontinental operation

Notes

  1. Lowest LSB carrier frequency (dial setting) should be 7.053 MHz.
  2. PSK31 activity starts from 7.040 MHz

30m (10 MHz)

Frequency Bandwidth Preferred Modes and Usage
10.100 – 10.130 MHz   200 Hz CW – 10.116 MHz – QRP (low power) Centre of Activity
10.130 – 10.150 MHz   500 Hz Narrow band modes

Notes

  1. Automatically controlled data stations (unattended) should avoid the use of the 10 MHz band
  2. The 10 MHz band is allocated to the Amateur Service only on a Secondary basis.
  3. The IARU has agreed that only CW and other narrow bandwidth modes are to be used on this band. Likewise the band is not to be used for contests and bulletins.
  4. SSB may be used on the 10 MHz band during emergencies involving the immediate safety of life and property, and only by stations actually involved with the handling of emergency traffic
  5. The band segment 10,120-10,140 kHz may only be used for SSB transmissions in the area of Africa south of the equator during local daylight hours.