p

IKeighley RAYNETI 

Emergency Communication Provided for the Community by Licensed Radio Operators

p
 
 

  Main

 
bullet Home Page
bullet Committee
bullet Photos
bullet Frequencies
bullet Can we help
bullet Can I Join
bullet Link
bullet Meetings
bullet Download Page
bullet E-mail us
bullet Events
 

Keighley News

Wuthering Hike
Saturday 13th March 2010
  • 14 Operators
Organiser - M3VGH

Event Order

Updated 25/02/10 Password_protected


BIGK 10K Run
Sunday 14th March 2010
  • User Services
    • Police
    • St Johns Ambulance
    • Bradford Council
    • Bradford EPO
Organiser M3VGH-G7HEN

 

News

 

                    

Keighley's preferred Operational Frequencies

All good radio amateurs are constrained to using certain bands of frequencies. Within each band, voluntary band plans assign "emergency priority" frequencies that RAYNET uses.

Keighley's preferred choice of operating frequencies are below but may be changed for operational reasons

Keighley's

Main - 144.6750 NBFM
Secondary - 144.6250 NBFM
Engineering - 144.7250 NBFM
Main - 433.725 NBFM
Main - 70.4000 NBFM
Main - 51.970 NBFM
The Leeds RAYNET Group net is on 144.625 MHz on Monday at 20:00

80 meters

3.663 MHz SSB National co-ordination during emergencies and the 80 meter RAYNET News every Sunday at 08:30 local time

40 meters

7.090 MHz SSB National co-ordination during emergencies

6 meters

51.210 NBFM
51.950 NBFM
51.960 NBFM
51.970 NBFM
51.980 NBFM
51.990 NBFM
 A large number of Internet Gateways use 51.950, effectively making it unusable for RAYNET in many areas

4 meters

70.3500 NBFM
70.3750 NBFM
70.4000 NBFM


70.3500 is listed for digital mode use as well as emergency communications

2 meters

144.260  USB
144.625 NBFM
144.650 NBFM
144.675 NBFM
144.775 NBFM
144.800 NBFM
144.825 NBFM
145.200 NBFM
145.225 NBFM

144.800 NBFM - Data communication (shared with APRS)

145.200 Emergency Communications Groups utilising this frequency should take steps to avoid interference to ISS operations    in non-emergency situations.

There is still some residual packet operation on 144.650 and the French band  plan still uses the 144.6xx part of the band for packet. Frequencies should be chosen with care, particularly when using talk-through units

70 centimetres

433.700 NBFM
433.725 NBFM
433.750 NBFM
433.775 NBFM

433.700 is listed as IARU Region 1 packet as well as emergency communications.

438.400 - 430.800 NBFM, Voice repeater

Base TX on 438.400 mobiles TX on 430.800 (-7.6MHz repeater shift. This has been chosen so that usage is compatible with most modern radios which have a wide negative shift available as standard).

This is a 7.6MHz split repeater pair in the 70cm "wide" repeater section. Further information about this portion of the band can be found on the RSGB's Repeater Management Committee website.

432.775 - 434.375 NBFM, Voice repeater

Base TX on 432, mobiles TX on 434 (standard +1.6MHz repeater shift)

The International Space Station

As a result of feedback from last week's GB2RS news item regarding the use of 145.200MHz and 145.800MHz by the International Space Station, the RSGB Spectrum Forum feels some clarification is needed and the following joint statement has been agreed with the IARU Region 1 Satellite Co-coordinator, the RSGB's Radio Communications Voluntary Services and The Radio Amateurs' Emergency Network Spectrum Forum members.

Although both the frequencies 145.200MHz and 145.800MHz have historically been used for domestic UK emergency communications, it was agreed at the IARU Region 1 Conference in 1996 to allocate 145.200MHz as an FM uplink channel with 145.800MHz serving as the downlink side of the pair. This particular frequency pair, which applies only for Region 1, had earlier been agreed by IARU internationally after discussions with NASA and AMSAT.

The likelihood of an active ISS pass taking place at the same time as bona fide UK emergency communications operations using 145.200MHz and / or 145.800MHz is considered low and due to the nature of circumstances would only be for a brief period in any case. In addition, the UK amateur radio emergency communications community has for many years discouraged the use of 145.800MHz as far as possible, and even then only using low power and vertical polarisation, due in any case to its proximity to the satellite sector.

UK terrestrial stations are therefore again requested to check for activity from ISS before transmitting. Details of the ISS orbits can be found on the Internet.