GB7ZP was first licensed in Sept-2008 to support D-Star Digital Voice activity in central Essex. Formerly based at the qth of Clive G1EUC in Danbury, it is now based in the Chelmsford area and moved to a new site in Jan-2022. In 2024, thanks to generous support from Icom-UK, GB7ZP was upgraded to a new Icom ID-RP4010V repeater unit and was re-engineered to fit a new 19" rack.
Status: RF On - New Gateway under test
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Frequency | Input 430.4875 MHz, Output 439.4875 MHz (DVU39) |
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Transceiver | Icom RP4010V - April-2024 |
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Power | 25W erp |
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Antenna | Diamond X300 vertical |
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NGR | TL 722 102 |
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Locator | JO01FS |
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Coverage Map |
GB7ZP |
Registration:
Gateway users should ensure they are registered/valid for the G2/G3 network:
- Icom UK offer a registration service: Click Here for Registration
- Radio Programming/ICF Files: Icom UK Downloads
- Check if you are (still) valid: Check Registration
D-Star Guide: A quick one pager on D-Star - 
ZP Quick Links:
| Sync Status | Last Heard | Dashboard: Icom-Dplus Updates every 5min |
Reflector: Scheduler |
Alternative Dashboard links: Icom-Dplus, NEW TEST FOLDER
Gateway/Network:
- Sync Status: All
- Others: GB7TE, GB7IC. GB7BP
- DPlus Reflectors: REF079, REF001, REF030, Full List
- The latest Gateway only supports both Icom Dplus reflectors - using vG3.2
Pictures:
- System: GB7ZP System in rack - Sep-2024
- Duplexer: Upgraded-2024
- Gateway: Latest and Previous models (G3.2 Alma-9 vs G3.0 CentOS-7)
- Preamp: old-1,
old-2 -
New:
assembly,
closeup,
rear
- Previous Repeater: System units, Controller
- Original Duplexer: Original-2008 and modified-2010 inside the original Icom RP4000V
Notes:
- GB7ZP runs Icom G3.2 software on Alma-9 Linux, following Gateway hardware and software upgrades in Summer 2024. This is supplemented with 'monlink' dplus scheduling and 'g2_link' for other reflectors.
- If disconnected, after a period, Monlink will relink to a scheduled dplus reflector.
- Users are free to connect to reflectors - connections are reset by the gateway housekeeping overnight
- Note the use of O and T commands for DCS/XRF connections vs L & U for dplus ones
- Please contact the keeper if you wish for alternate refector scheduling (or quiet/DIY hours)
- Reflector connectivity requires you to be registered. If you once registered locally on a repeater/gateway that is now out of service, check that you are still valid! This is why we recommend Icom's service - we do not register locally on ZP.
12-Jul-2026