GB7ZP 70cm D-Star

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.

Status: RF Off - Under maintenance, Gateway connected

Frequency Input 430.4875 MHz, Output 439.4875 MHz   (DVU39)
Transceiver Icom RP4000V and RP2C Logic Controller
Power 25W erp
Antenna Diamond X300 vertical
NGR TL 722 102
Locator JO01FS
Coverage Map GB7ZP

Gateway users should ensure they are registered/valid for the G2/G3 network:

D-Star Guide: A quick one pager on D-Star -

ZP Quick Links:
Sync Status Last Heard



  • The ERG Gallery has pictures of the System units, Duplexer, Logic and Gateway
  • Duplexer: Original-2008, Modified-2010 - hi-res photos


    • GB7ZP runs Icom G3 software, following Gateway hardware and software upgrades in July 2019.
    • Users are free to connect to reflectors - connections are reset by the gateway housekeeping at 4am each day
    • Reflector connectivity requires you to be registered. If you once registered locally on a repeater/gateway that is now out of service, check that your are still valid! This is why we recommend Icom's service - we do not register locally on ZP.