====== GB7WIN Crab Wood, Winchester, Hants IO91hb ======

GB7WIN was commissioned on 23rd March 2025 as a joint project between Alan G8IPG and Jason M0MZF on the radio site at Crab Wood, Winchester as part of [[https://swhr.org.uk/|South West Hampshire Raynet's]] wider project to provide digital voice and data services to amateurs across the wider area. Thanks to Matt 2E0HKD for his continuing involvement in BPQ node configuration!

**Live traffic monitor at [[http://gb7win.ddns.net:50650]]**\\
**Get on WhatsPac :) [[http://whatspac.m0ahn.co.uk:88/]]**

=====Current and planned ports=====
^ Freq.      ^ Pol ^ Mode             ^ NinoTNC mode ^ Status ^ Links ^
| 144.9375 MHz | V   | NinoTNC QPSK 3k6 IL2P+CRC   | 0101 | active | GB7RDG GB7BSK GB7WOD MB7NPW |
| 50.650 MHz | V   | NinoTNC GFSK 4k8 IL2P+CRC | 0100 | planned | GB7RDG MB7NPW GB7IOW? |
| 70.4875 MHz | V   | NinoTNC GFSK 4k8 IL2P+CRC | 0100 | considered | GB7EBN? |
| 432.650 MHz | V   | NinoTNC GFSK 9k6 IL2P+CRC | 0010 | considered | GB7IOW? G7BCS? |

As far as possible we hope to use the forthcoming 6m port for linking and the 2m port for user access; with only the 2m port currently operational locked NETROM routes have been implemented to the following nodes with which we have a (mostly!) reliable circuit:
[[nodes:gb7rdg|GB7RDG]] (Reading, Berks), [[nodes:gb7bsk|GB7BSK]] (Basingstoke, Hants), [[nodes:gb7wod|GB7WOD]] (Woodley, Berks) and [[nodes:mb7npw|MB7NPW]] (Pewsey, Wilts).

=====Technical=====
  * Modified Comet GP-15N @ ~40m AGL / ~200m ASL, 55m Andrews LDF7-50A, 14dBW ERP
  * Raspberry Pi 5 / Raspberry Pi OS (Debian Bookworm)
  * LinBPQ ([[packet:linbpq-apt-installation|latest from Hibby's repo]])
  * [[packet:ninotnc|NinoTNC A4]]
  * Motorola GM380 (data in / flat audio out)

=====Coverage Maps=====
Simulations from radiomobileonline; Base antenna 12m AGL; Strong signal 15dBuV/m, Weak Signal 3dBuV/m

^ 2m plot, 4dBi antenna, 12m AGL ^ 6m plot, 2.2dBi antenna, 12m AGL ^
| {{:nodes:2m_crab_wood_45m_25w_erp_base.png?400}} | {{:nodes:6m_crab_wood_45m_25w_erp_base.png?400}} |

=====Other FAC'd equipment on site=====
  * MB7UUW APRS Digipeater, 144.800 MHz
  * GB7CW DMR Repeater, South West Cluster, DVU48 439.600 MHz -9MHz, CC5, Slot 1 TG 9 Local, Slot 2 TG 950 Cluster