UBARoyal Belgian Amateur Radio Union

slideshow 1

Photo: Couloir

Bandplanning between 144 and 146 MHz

Frequency Max Bandwidth Mode Usage
144.000

144.025

2700 Hz

All modes

                          Satellites only (downlink)
144.025

144.100

500 Hz

Telegraphy (a)
144.050               Centre of activity

144.100               Random MS (m)
144.100

144.150

500 Hz
Telegraphy
MGM

144.110 - 144.160 EME MGM
 
144.150

144.400

2700 Hz
Telegraphy
SSB
MGM
144.195 - 144.205 Random MS activity SSB (m)

144.300                SSB center of activity
144.400

144.490

500 Hz

Telegraphy
MGM

                            Beacons exclusive (b)
144.491

144.493

500 Hz

EMGM

                           Experimental MGM
144.500



144.794


20 KHz


All modes (f)
144.500                Image mode center (SSTV,FAX...)

144.600                Data center of activity

144.750                ATV talk back
144.794





144.9625



12 KHz



MGM (h)
Digital Communications
144.800                APRS

144.8125              DV Internet voice gateway
144.8250              DV Internet voice gateway
144.8375              DV Internet voice gateway
144.8500              DV Internet voice gateway
144.8625              DV Internet voice gateway
144.994

145.194

12 KHz

FM / Digital Voice

                           Repeater input exclusive (c)
145.194

145.206

12 KHz

FM / Digital Voice (i)

145.200                Space communication (p)
145.206



145.5625

12KHz

FM / Digital Voice (i)
145.2375              FM Internet Voice Gateways
145.2875              FM Internet Voice Gateways
145.3375              FM Internet Voice Gateway
145.375                digital voice Calling
145.500                Mobile calling
145.5750

145.7935

12 KHz

FM / Digital Voice

                            Repeater output exclusive (c) (d)
145.794

145.806

12 KHz

FM / Digital Voice (i)

                            Space communication (p)
145.806

146.000

12 Khz

all modes (e)

                             Satellites exclusive

The following notes are part of the officially adopted IARU Region 1 bandplan, and all member societies should strongly promote adherence to the recommendations made in these notes.
General:
i. In Europe no input or output channels of telephony repeaters shall be allowed to operate between 144.000 and 144.794 MHz.

Footnotes:
a. Telegraphy is permitted over the whole band, except in the beacon band; Telegraphy exclusive between 144.000 - 144.110 MHz. (except satellite output downlink to earth)
b. Refer to Beacons Chapter for coordination of beacons in the beacon sub-band
c. For technical standards on FM and repeaters PART 3 section 8.2 If there is a real need for more repeater channels, it is recommended that Societies or Repeater Groups consider setting up a repeater system on the higher frequency band(s).
Further to this subject the following recommendation was adopted in. De Haan, 1993: For the numbering of FM telephony channels, see annex 2 to this section.
d. Established simplex frequencies on repeater output channels may be retained.
e. In view of the important public relations aspect of amateur satellite activities, it was decided at the IARU Region 1 Conference in Miskolc Tapolca (1978) that:
     i. AMSAT will be allowed to use the band 145.8 - 146.0 MHz for amateur satellite activity.
    ii. This decision was re-confirmed at the IARU Region 1 Conference in Brighton (1981).
    iii. see also footnote p
f. No unmanned stations shall use the all-mode segment, except for linear transponders and ARDF beacons. (Tel Aviv 1996, San Marino 2002)
i. This segment is for simplex use only with no Digital Voice gateways. Embedded data traffic is allowed along with digital voice. Digital Voice users should check that the channel is not in use by FM.
j. Amateur Satellite Linear Transponder down-links. Subject to agreement with Region-2 and Region-3

Usage:
The following notes are referring to the Usage column in the bandplan. As already set out in the introduction to section IIc, in the right amateur spirit operators should take notice of these agreements which are made for operating convenience, but no right to reserved frequencies can be derived from a mention in the Usage column or from the following notes.
Footnotes:
k. Not used
l. Not used
m. See procedures set out in section 4.4
n. Deleted (Varna 2014)
o. Not used
p. For FM voice communications with special stations like manned spacecraft it is recommended to use 145.200 MHz for simplex operation or 145.200/145.800 MHz for split-channel operation (Vienna 1995/Tel Aviv 1996).
q. It is recognised that in the IARU Region 1 rules for the Championships in Amateur Radio Direction Finding (ARDF) competitions, the frequencies for the unmanned beacons are in the segment 144.500 – 144.900 MHz. These beacons run low power and are on the air only during ARDF events. (Davos 2005)
r. No transmission shall be made below 144,0025 MHz* (Varna 2014) *so that a necessary guard band is provided at the bottom edge

National usage notes Some countries have existing use at:
• • 144.660-144.690 Linear Transponder Inputs
• • 144.630-144.660 Linear Transponder Outputs