Wolfback

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Wolfback Ridge

Marin Amateur Radio Society (K6GWE)

Site located off Wolfback Ridge Road, in the Marin Headlands (map)(photos)

Nodes

NZ6J-Wolfback-South

  • Radio: Ubiquiti Rocket M5
  • Frequency: 5.885 GHz / Channel 177
  • Bandwidth: 10 MHz
  • Antenna: 19 dBi, 120° sector (Ubiquiti 5G19-120)
  • Location: -
  • Altitude: -
  • Bearing: -

NZ6J-Wolfback-North-County

  • Radio: Ubiquiti Rocket M5
  • Frequency: 5.865 GHz / Channel 173
  • Bandwidth: 10 MHz
  • Antenna: 19 dBi, 120° sector (Ubiquiti 5G19-120)
  • Location: -
  • Altitude: -
  • Bearing: -

K6GWE-Wolfback-Southern-Marin-NSM5

  • Radio: Ubiquiti NanoStation M5 XW
  • Frequency: 5.865 GHz / Channel 173
  • Bandwidth: 10 MHz
  • Antenna: 16 dBi (built-in)
  • Location: -
  • Altitude: -
  • Bearing: Toward Tam Valley
IMG 6728.jpeg

KN6PLV-Wolfback-HAP

  • Radio: Mikrotik hAP ac2
  • Frequency: -
  • Bandwidth: -
  • Antenna: -
  • Location: -
  • Altitude: -
  • Bearing: -

Backbone

Wolfback AP

  • Radio: Ubiquiti Rocket LTU
  • Frequency: 6.070 GHz (license WN2XTR)
  • Bandwidth: 40 MHz
  • Antenna: 19 dBi, 120° sector (Ubiquiti AM-5G19-120)
  • Location: 37.850961, -122.498317
  • Altitude: 357m
  • Bearing: 86°
  • Read Only Access: mesh / Back-Bone

Site Details

Future Plans

None

Completed Work

March, 2024 / 2

  • Replaced blue cables with outside grade cable. Old cables were not performing at their specified speeds and seemed to have occasional problems providing adequate power.

March, 2024 / 1

  • Replace backbone current 60° sector with 120° sector.
    • While you'd think would be worse, because the AC sector's gain drops off very quickly from the center, the larger sector with a flatter central gain works better for our spread of devices.
    • This is contrary to our original approach (see earlier notes).
  • Replace current dual power injectors with EdgeRouterX SFP to provide PoE power to everything.

April, 2023

  • Installed hAP ac2 to manage the backbone radio.
  • Installed AM-5AC21-60 sector on backbone radio.

March, 2023

  • Link from ORCA to Wolfback installed and operating successfully. Still requires adjustment at Wolfback to improve quality. Switching to a narrow sector antenna might be helpful.

November, 2022

  • Experiment from San Pedro failed to establish a link. We wont pursue a link from this site to Wolfback further.

October, 2022

  • Put a Ubiquiti LTU radio at site connected to a sector antenna, pointing at 40°. We will experiment to see if we can establish links from ORCA, CCCC and San Pedro using Ubiquiti AF5XHD radios and 30 dBi dishes.
  • Experiment (Oct 12th, 2022) from ORCA was inconclusive, but test conditions were challenging (wind and fog). A link could be established, but the signal was intermittent. It might be necessary to adjust to tilt of the Woflback sector to be 2° up to counteract the in-built electronic down-tilt.
  • Experiment from CCCC established a link.

Commercial Neighbors

Unwired Ltd

Unwired Ltd shares tenancy at Wolfback. They license (WQHK581) spectrum in the 18 GHz and 19 GHz range.

Contacts

Site Admin

  • Erick Steinberg - K6ER - ericks@esteinberg.com

Mesh Admin

  • Rob Rowlands - NZ6J - rowlands47@gmail.com