San Bruno Mountain (Building 7)
Site located on San Bruno Mountain. Near the KTSF transmitter (map)(photos)
Site Details
Tower has a 4° slope. All equipment must be mounded on galvanized supports which are themselves attached to the tower using beam clamps. Cabling must be run with beam camps and stainless steel zip ties and cannot be directly attached to the tower. Cables run into the shack via rubber cable glands (not the plastic tube!). All current mounting brackets should be considered unusable. Cable loops are discouraged, as is excessive cable in the shack.
The site provide main power (without backup) as well as 24vdc, 12vdc and -24vdc (breakers not provided) with battery backup.
Configuration
Currently the site has an Mikrotik hAP, a Ubiquiti NSM5 (bearing 236° toward Colma), a Ubiquiti Rocket M5 + 120 degree sector antenna (bearing 160° toward Millbrae), a Ubiquiti EdgePoint R6 switch, and a Ubiquiti AirFiber dish pointing at Fish Ranch.
| Device | IP | Notes |
|---|---|---|
| EdgePoint R6 | (AREDN LAN) | |
| airFiber 5XHD | (AREDN LAN) | to Fish Ranch |
| VLAN | Description |
|---|---|
| 1 | AREDN WAN |
| 2 | AREDN DtD |
| 100 | AREDN LAN |
| Port | Description | VLANs | PoE | Notes |
|---|---|---|---|---|
| 0 | (not connected) | 1, 2, (100) | Off | DHCP on VLAN1 |
| 1 | W2GMD-SANBRUNO-NSM5 | 1, 2, (100) | 24v | |
| 2 | W2GMD-SANBRUNO-RM5 | 1, 2, (100) | 24v | |
| 3 | DISH-TO-FISHRANCH | 1, 2, (100) | Off | |
| 4 | W2GMD-SANBRUNO-HAP | 1, 2, (100) | Off | |
| 5 | (unused) | Off |
| Port | Description | VLANs | Notes |
|---|---|---|---|
| 1 | (1) | WAN | |
| 2 | LAN | ||
| 3 | LAN | ||
| 4 | LAN | ||
| 5 | EdgePoint R6 | (LAN), 2 | DtD |
Notes
Part of the Bay Area Backbone connecting to Fish Ranch.
Plans
- Phase 1
- Add a rack shelf
- Move the hAP onto the rack shelf
- Replace the R6 with a UISP router on shelf
- Remove any injectors
- Add 24vdc/5a breaker
- Run new power cabling to hAP & router from 24v system
- Run a wifi scan at the proposed antenna mount point to see how noisy it is.
- Phase 2
- Add galvanized support for new radios to tower
- Add airFiber link to San Carlos
- Reposition W2GMD-SANBRUNO-RM5 to point at Daly City
- Replace W2GMD-SANBRUNO-NSM5 with Rocket + Sector Antenna
- Reposition airFiber link to Fish Ranch for optimal signal strength
Nodes
DISH-TO-FISHRANCH
Radio: airFiber 5XHD
Frequency: 5.99 GHz (Unlicensed use - FCC note)
Bandwidth: 60 MHz
Antenna: Ubiquiti RD-5G30-LW 30 dBi
Location: 37.68678, -122.43527
Altitude: 400m
Bearing: 56° toward Oakland
W2GMD-SANBRUNO-HAP
Radio: Mikrotik hAP
Antenna: -
Location: Inside the HAM Shack
Altitude: -
Bearing: -
W2GMD-SANBRUNO-RM5
Radio: Ubiquiti Rocket M5
Antenna: 120 degree sector
Location: 37.68674, -122.43525
Altitude: 387m
Bearing: 159° toward Millbrae
W2GMD-SANBRUNO-NSM5
Radio: Ubiquiti NanoStation M5
Antenna: Build in
Location: 37.68673, -122.43532
Altitude: 392m
Bearing: 236° toward Colma
Coordination
The San Bruno Mountain HAM site is own and managed by Matthew Kaufman as part of the WB6ECE Repeater Group. Coordination of changes to the site (e.g. new radios) is managed on the mailing list Sbruno_shack. Unfortunately this is an invite only group with no public archives.
Commercial Neighbors
The local WISP in this area is Etheric although they use a different tower. They license (WQTV709) spectrum from 11.2 GHz to 11.7 GHz.
Contacts
- Tim Wilkinson - KN6PLV - tim@sfwem.net
- Steve Ligtelyn - KC6SVW - steve@tcomeng.com
- Matthew Kaufman - KA6SQG - matthew@eeph.com