UBAUnion royale belge des amateurs-émetteurs a.s.b.l.

slideshow 1

Photo: Couloir

Le bandplanning entre 144 et 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

1. IARU REGION 1 BANDPLAN

  

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.
 

1.1. General

i. In Europe no input or output channels of telephony repeaters shall be allowed to operate between 144.000 and 144.794 MHz.

ii. Except in the part of the band allocated to the Amateur Satellite Service and the lineartransponders it is not allowed to use input- or output frequencies in the 145 MHz band for repeaters with in- or output in other amateur bands (Miskolc-Tapolca 1978, San Marino 2002).

iii. No packet-radio networks will be set up in the 145 MHz band (revised Lillehammer 1999)

It is recognised that in some parts of Region 1 the introduction of packet-radiomay require the use of access frequencies in the 144 - 146 MHz band for a limited time (Düsseldorf 1989).


Note.

The parts of Region 1 meant are those parts with low amateur population and/or those at the periphery of the Region, where exceptions can be tolerated as these do not harm the orderly use of the band in the parts of Region 1 where there is a greater pressure on the available spectrum space. In the latter part of the Region the second paragraph of the footnote should never be used to justify ignoring the first part for a considerable time.
 

 

 

1.2. Footnotes

a. Telegraphy is permitted over the whole band, but preferably not in the beacon band; Telegraphy exclusive between 144.000 - 144.110 MHz.
 

b. Refer to Beacons Chapter [ of the IARU Region 1 VHF manager's handbook ] for coordination of beacons in the beacon sub-band
 

c. For technical standards on FM and repeaters see section 8

If there is a real need for more repeater channels (see section10), 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 FM repeater and simplex operation in the 144 to 146 MHz band IARU Region 1 will change to a genuine 12.5 kHz channel spacing system.
Furthermore in Tel Aviv, 1996 it was decided that societies shall promote the use of the 12.5 kHz channel spacing standard for FM channels in order to effectively implement the 12.5 kHz system .
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.

   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)
 

g. Attention is drawn to section 1.1. point iii of these Bandplan notes!
 

h. Network stations shall only operate in the part of the 145 MHz band allocated to Digital Communications and will be permitted only for a limited time.

Such network stations should also have access ports on other VHF/UHF or Microwave bands and should not use the 145 MHz band to forward traffic to other network stations. In view of the time limitation the set-up of new network stations is not encouraged (De Haan, 1993).
 

Unmanned packet radio stations are only allowed in the segment 144.800 - 144.990 MHz. Outside of this segment the signal level produced by those stations shall be not larger than 60 dB below the carrier level (measured in a 12 kHz bandwidth). Any other unmanned packet radio and digital access points must cease operation not later than 31 December 1997.(Tel Aviv 1996).
 

 

 

 

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
 

2. 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.

EME activity using MGM is commonly practised between 144.110-144.160MHz
 

2.1. Footnotes

m. See procedures set out in section 7.4
 

n. Publicity should be given to the usage of frequencies around 144.600 MHz by RTTY stations, in order to keep these frequencies clear from other traffic and to avoid interference with those RTTY stations.
 

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)