20/06/18 ..... All four JB repeater systems are fully operational.
- All the facilities provided by jbrepeaters.org.uk are funded solely by donations from their users and supporters.
- There is no club or group to join and no annual membership fee.
- Despite what some still think, there is no central funding for repeaters and no financial support from the RSGB or Ofcom etc.
- We rely totally on our systems users good will and generosity.
GB3JB 2m FM
GB3JB is perceived as a 'GREEN' repeater, being powered by Solar Panels and a Wind Turbine.
It is located close to the junctions of the A303 and A350, in South Wiltshire. It is a simple to use, good old fashioned, basic 2m analogue FM, voice repeater, with no frills, bells or whistles. Neither is it connected to the Internet. Channel RV63, 145.7875 Mhz output at 14 dBw (25w) ERP, 145.1875 Mhz input, 103.5 Hz ctcss tone. The ident is the Callsign + Locator, i.e "GB3JB IO81VC" The invitation to transmit is a single dit. There is no 1750hz tone burst access. The timeout is set to 3 minutes. Being on 2m, mobile coverage typically extends to towns and citys like Dorchester, Bath, Bristol, Salisbury, Taunton and Yeovil. Plus, Salisbury Plain, the Blackmore Vale and Cranborne Chase are also within its range. |
GB7JB 70cm DMR
GB7JB is located on the North Western side of Wincanton.
It is a Digital Voice Repeater, based on DMR TDMA technology. Thus providing the significant benefit of two effectively simultaneous communications channels, or slots. Channel DVU37, 439.4625 Mhz output at 14 dBw (25w) ERP, 430.4625 Mhz input, Colour Code 1. The ident is the Callsign + Locator, i.e "GB7JB IO81TB". This is sent in analogue FM. The timeout is set to 3 minutes. Slot 1, which only accepts Talk Group 9, is intended as a local nattering channel, much the same as any other 70cm repeater. Slot 2, which only accepts Talk Group 950, is linked into the South West Cluster, which additionally consists of GB7AA, GB7BS, GB7DR, GB7KT, GB7SD and GB7YS DMR repeaters. |
GB3YS 70cm FM
GB3YS is located on the Eastern side of Yeovil.
It is a simple to use, 70cm analogue FM, voice repeater, with no frills, bells or whistles. Neither is it connected to the Internet. Channel RB02, 433.050 Mhz output at 14 dBw (25w) ERP, 434.650 Mhz input, 88.5 Hz ctcss tone. The ident is the Callsign. The invitation to transmit is a single dit. The timeout is set to 3 minutes. There is no 1750hz tone burst access. |
GB7YS 70cm DMR
GB7YS is located on the Northern Eastern side of Yeovil.
It is a Digital Voice Repeater, based on DMR TDMA technology. Thus providing the significant benefit of two effectively simultaneous communications channels, or slots. Channel DVU57, 439.7125 Mhz output at 14 dBw (25w) ERP, 430.7125 Mhz input, Colour Code 1. The ident is the Callsign + Locator, i.e "GB7YS IO80QW", sent in analogue FM. Timeout is set to 3 minutes. Slot 1, which only accepts Talk Group 9, is intended as a local nattering channel, much the same as any other 70cm repeater. Slot 2, which only accepts Talk Group 950, is linked into the South West Cluster, which additionally consists of GB7AA, GB7BS, GB7DR, GB7JB, GB7KT and GB7SD DMR repeaters. |
Availability and Coverage
GB3JB being powered by Solar and Wind energy, unfortunately means that sometimes there will be outages. We aim to ensure that it is available for use as near to 100% of the time, as is possible. However, during the winter months this can be a little difficult at times, with reduced sunlight hours and intensity, and periods when there is little wind of any consequence. Not over dis-charging the storage batteries is a priority.
The coverage maps are computer predictions based on specific criteria. As is always the case with VHF & UHF operation, the ability to communicate is of course dependant upon the users actual location, their installations and antenna positioning, the topography in the path, sufficient rf power, and the prevailing propagation conditions.
The availability of any specific repeater at any specific time cannot be guaranteed due to the possible failure of electronic, electrical or mechanical components or equipment, specific site power supplies, internet connections, structural issues, general maintenance requirements, official notice to switch the repeater off, or any other unforeseen circumstance.
The coverage maps are computer predictions based on specific criteria. As is always the case with VHF & UHF operation, the ability to communicate is of course dependant upon the users actual location, their installations and antenna positioning, the topography in the path, sufficient rf power, and the prevailing propagation conditions.
The availability of any specific repeater at any specific time cannot be guaranteed due to the possible failure of electronic, electrical or mechanical components or equipment, specific site power supplies, internet connections, structural issues, general maintenance requirements, official notice to switch the repeater off, or any other unforeseen circumstance.
Funding and Association
All the facilities provided by jbrepeaters.org.uk are funded solely by donations from their users and supporters. There is no club or group to join and no annual membership fee. Despite what some still think, there is no central funding for repeaters and no financial support from the RSGB or Ofcom etc.
We rely totally on our users good will and generosity.
For information about making a donation, you can click HERE.
The South West Cluster of DMR Repeaters is an independent network of repeaters that is NOT centrally controlled or funded. Each repeater in the SWC is managed independently by it's own team and with it's own resources.
Our thanks to Lindars Radio, PC Zone, and the Yeovil Amateur Radio Club, for their interest and support of our Yeovil repeaters, GB3YS and GB7YS.
G3ZXX provides technical advice and is also the keeper for GB7KT (Andover) and GB7MJ (Romsey). Repeater keepers have to hold a full licence. Both these systems are solely owned and financed by Steve, 2E0DUJ. GB7KT is part of the South West Cluster, whilst GB7MJ is currently in stand alone mode. 2E0DUJ provides assistance at the JB site, such as tower climbing and antenna installation.
We rely totally on our users good will and generosity.
For information about making a donation, you can click HERE.
The South West Cluster of DMR Repeaters is an independent network of repeaters that is NOT centrally controlled or funded. Each repeater in the SWC is managed independently by it's own team and with it's own resources.
Our thanks to Lindars Radio, PC Zone, and the Yeovil Amateur Radio Club, for their interest and support of our Yeovil repeaters, GB3YS and GB7YS.
G3ZXX provides technical advice and is also the keeper for GB7KT (Andover) and GB7MJ (Romsey). Repeater keepers have to hold a full licence. Both these systems are solely owned and financed by Steve, 2E0DUJ. GB7KT is part of the South West Cluster, whilst GB7MJ is currently in stand alone mode. 2E0DUJ provides assistance at the JB site, such as tower climbing and antenna installation.
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Page last updated: 22/06/2018 @ 1047 UTC
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(c) copyright g3zxx 2016 - 2018
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