NOTES ON THE 430-440 MHz BANDPLAN1.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
- In Europe no input or output channels of FM repeaters shall be
allowed to operate between 432 and 433 MHz.
- Beacons, irrespective of their ERP, will have to be located in the
exclusive beacon part of the band.
1.2. Footnotes
- Telegraphy is permitted over the whole narrow-band DX part of the
band; Telegraphy exclusive between 432.000-432.150 MHz.
- Within IARU Region 1 the frequencies for beacons with an ERP of more
than 50 Watts are coordinated by the IARU Region 1 Beacon Coordinator
- ATV operators should be encouraged to use the microwave
allocations where available, but may continue to use the 430 MHz band
where permitted by the licensing authority. In case of interference
between ATV and the Amateur Satellite Service the Satellite Service
should have priority.
- ATV transmissions in the 435 MHz band should take place in the
segment 434.000-440.000 MHz. The video carrier should be below 434.500
MHz or above 438.500 MHz. National societies should provide guidance
to their members on the exact frequencies to be used, with due
consideration of the interests of other users.
(Noordwijkerhout 1987)
- The words "Sub-regional (national) bandplanning" appearing in IARU
Region 1 VHF/UHF/Microwave bandplans mean the following:
In bands and sub-bands not available throughout Region 1,
band-planning should be coordinated on a sub-regional basis between the
countries where those bands and sub-bands are allocated to the Amateur
Service. The words "national bandplanning" refer to bands/segments which
are available only in a single country (such as the 70 MHz band
allocation), or only in a few widely separated
countries.
(Torremolinos 1990)
- At the IARU Region 1 Conference in Torremolinos (1990) the output
band for linear transponders was extended from 432.700 to 432.800 MHz
under the following condition:
The established use of 432.600 MHz for RTTY (FSK/PSK) and 432.700
MHz for FAX should be respected when installing linear transponders
which use this allocation.
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.
2.1. General
During contests and bandopenings local traffic using narrow-band modes
should operate between 432.500-432.800 MHz.
2.2. Footnotes
- The HB/DL/OE wide-shift repeater system, already in use for a long
time, is valuable with a view to a better utilisation of the whole band.
Hence IARU Region 1 endorses the system.
This also applies for the French repeater channel system, also
adopted by the Netherlands, which IARU Region 1 supports as a useful
measure to fill a hitherto unused part of the band.
For the numbering of NBFM channels see appendix 2 to this section
- In the Usage section of the 435 MHz bandplan the following frequency
segments have been designated for digital communications:
- 430.544-430.931 MHz Extension of the 7.6 MHz repeater system input
for digital comm.
437.194-438.531 MHz Output channels for the
above
- 433.619 - 433.781 MHz
438.019 - 438.181 MHz
- 430.394 - 430.581 MHz For digital communication links
439.794
- 439.981 MHz For digital communication links With due regard
to the band allocated to the Amateur Service by the national
Administration, the interests of other users, possible interference from
e.g. ISM, the specific digital technique or system to be accommodated
etc., a sub-regional, or national choice may be made within the above
segments.
- In those countries where 433.619-433.781 MHz is the only segment of
the 435 MHz band available for digital communications, modulation
techniques requiring a channel separation exceeding 25 kHz should not be
used. If different or incompatible use of this part of the frequency
spectrum in contemplated in neighbouring countries, this use should be
coordinated between the countries concerned with the aim of avoiding
harmful interference.
- On a temporary basis, in those countries where 433.619 - 433.781 MHz
is the only segment of the 435 MHz band available for Digital
Communications:
- Channels with centre frequencies 433.700, 432.725, 432.750,
432.775, 434.450, 434.475, 434.500, 434.525, 434.550 and 434.575 may
be used for digital communications.
- Use of these channels must nor interfere with linear transponders.
- Modulation techniques requiring a channel separation exceeding 25
kHz must not be used on these channels.
(De Haan, 1993)
- At the IARU Region 1 Conference in Torremolinos (1990) the following
recommendation was adopted regarding the segments for repeaters and
links. For a repeater/link to be installed within 150 km of a national
border, the member society should co-ordinate the frequency allocation
and the technical (system) data with the member societies in
neighbouring countries. Special attention should be paid to the common
good practice of using directional antennas and the minimum power
necessary.
As a matter of course this agreement is also valid for any link
experiments carried out on the multi-mode channels in the segment
438.544-438.631 MHz. (De Haan, 1993 ).
- These multi-mode channels are to be used for experimenting with new
transmission technologies (De Haan, 1993)
- In the United Kingdom the use of low-power speech repeaters on
repeater channels in the segment 438.419-438.581 is allowed. Where
necessary, frequencies will be coordinated with neighbouring countries
(De Haan, 1993).
- Experiments using wide band digital modes may take place in the 435
MHz band in those countries that have the full 10 MHz allocation. These
experiments should be in the all modes section around a frequency of 434
MHz, use horizontal polarisation and the minimum power required. (Tel
Aviv 1996)
|
