San Bruno Mountain (Building 7): Difference between revisions

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[[File:San Bruno - HAM Tower.jpg|thumb|San Bruno Ham Tower]]
  
[[File:San Bruno - HAM Tower.jpg|thumb|San Bruno Ham Tower]]
−
Site located on San Bruno Mountain. Near the KTSF transmitter ([https://www.google.com/maps/@37.68675,-122.43525,17z map])([[San Bruno Mountain Photos|photos]])
 +
Site located on San Bruno Mountain, next to Building 7, near the KTSF transmitter ([https://www.google.com/maps/@37.68675,-122.43525,17z map])([[San Bruno Mountain Photos|photos]])
  +
  +
== Nodes ==
  +
[[File:San Bruno Mtn Shack Equipment.jpg|thumb|200x200px]]
  +
  +
=== KN6PLV-SANBRUNO-HAP ===
  +
  +
* Radio: Mikrotik hAP AC2
  +
* Antenna: Built-in (provides onsite wifi access to mesh)
  +
* Location: Inside the HAM Shack
  +
* Altitude: 385m
  +
* Bearing: N/A
  +
  +
[[File:San Bruno - RM5.jpg|thumb|200x200px|On axis view from antenna]]
  +
  +
=== KN6PLV-SANBRUNO-RAC5-1 ===
  +
  +
* Radio: Ubiquiti Rocket 5AC Lite
  +
* Antenna: 120° sector
  +
* Location: 37.68674, -122.43525
  +
* Altitude: 387m
  +
* Bearing: 159° toward Millbrae
  +
  +
[[File:San Bruno NSM5.jpg|thumb|200x200px|On axis view from antenna]]
  +
  +
=== KN6PLV-SANBRUNO-RAC5-2 ===
  +
  +
* Radio: Ubiquiti Rocket 5AC Lite
  +
* Antenna: 120° sector
  +
* Location: 37.68673, -122.43532
  +
* Altitude: 392m
  +
* Bearing: 207° toward Skyline College
  +
  +
=== KN6PLV-SANBRUNO-VNODE ===
  +
  +
* Radio: None
  +
* Antenna: N/A
  +
* Location: 37.68673, -122.43532
  +
* Altitude: 392m
  +
* Bearing: N/A
  +
  +
== Backbone ==
  +
[[File:San Bruno to Fish Ranch.jpg|thumb|200x200px|On axis view from antenna]]
  +
  +
=== Dish to [[Fish Ranch]] ===
  +
  +
* Radio: airFiber 5XHD
  +
* Frequency: 6.025 GHz (FCC OET Experimental License [https://apps.fcc.gov/els/GetAtt.html?id=325016&x=. WN2XRO])
  +
* Bandwidth: 40 MHz
  +
* Antenna: Ubiquiti RD-5G30-LW 30 dBi
  +
* Location: 37.68678, -122.43527
  +
* Altitude: 400m
  +
* Bearing: 56° toward Oakland
  +
  +
[[File:ToSanCarlos.jpg|thumb|200x200px]]
  +
  +
=== Dish to [[San Carlos]], Swallow, [[Fire Station 8]] & [[Black Mountain (Site 4)]] ===
  +
  +
* Radio: UISP LTU Rocket
  +
* Frequency: 5.965 GHz (GCC OET Experimental License [https://apps.fcc.gov/els/GetAtt.html?id=327676 WN2XUD])
  +
* Bandwidth: 40 MHz
  +
* Antenna: Ubiquiti RD-5G30-LW 30 dBi
  +
* Location: 37.68678, -122.43527
  +
* Altitude: 400m
  +
* Bearing: 149° toward San Carlos
  +
* Read Only Access: mesh / aredn-back-bone
   
 
== Site Details ==
  
== 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 "grommets" (not the plastic tube!). All current mounting brackets should be considered unusable. Cable loops are discouraged, as is excessive cable in the shack.
  
   
  +
=== Tower ===
−
The site provide main power (without backup) as well as 24vdc, 12vdc and -24vdc (breakers not provided) with battery backup.
  
  +
The tower has a 4° slope on the main lower beams. The base of the tower is approximately 23 feet wide. The first horizontal beam is 8 feet from the ground. The second beam is 7 feet above the first. The supporting angled beams, running from the group, are at an angle of 37° from vertical. The ham shack is located on the south side of the tower with a slight peeked roof. The top of the roof peek is 6 feet from the second beam. The edge of the roof is approximately level with the first beam.
  +
  +
The beams themselves are 3.5in horizontally, 3in vertically, and 0.25in thick with a rounded edge. The double beam which forms the second horizontal beam is 1.25in thick.
  +
  +
=== Mounting ===
  +
All equipment must be mounded on galvanized supports which are themselves attached to the tower using beam clamps. All current mounting brackets should be considered unusable. Mounts using "stacked" struts are no longer allowed.
  +
  +
=== Cabling ===
  +
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!). Cable loops are discouraged, as is excessive cable in the shack.
  +
  +
=== Power ===
  +
The site provide main power (without backup) as well as 24vdc, 12vdc and -24vdc (breakers not provided) with battery backup. No solar or generator.
  +
  +
Originally we used the provided backup 24vdc power, but switched to our own 200Ah battery (~2 days of power) to avoid negatively impacting the rest of the site's tenants.
   
 
=== Configuration ===
  
=== Configuration ===
  +
Currently the site has an [https://mikrotik.com/product/hap_ac2 Mikrotik hAP AC2], two Ubiquiti Rocket M5 + 120 degree sector antennas, a Ubiquiti UISP Router, two Ubiquiti AirFiber dish - one pointing at Fish Ranch, the other at San Carlos, and a NUC11 server. All device are power either directly, or via the router, from the our own EdgePower with backup battery.
−
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 [https://store.ui.com/collections/operator-edgemax-control-points/products/edgepoint-r6 Ubiquiti EdgePoint R6] switch, and a Ubiquiti AirFiber dish pointing at Fish Ranch.
  
 
{| class="wikitable"
  
{| class="wikitable"
 
|+Devices
  
|+Devices
Line 15: Line 93:
 
!Notes
  
!Notes
 
|-
  
|-
  +
|[https://mikrotik.com/product/crs112_8p_4s_in MIkrotik Router CRS112-8P-4S-IN]
−
|[https://store.ui.com/collections/operator-edgemax-control-points/products/edgepoint-r6 EdgePoint R6]
  
  +
|DHCP
−
|(AREDN LAN)
  
 
|
  
|
 
|-
  
|-
 
|[https://store.ui.com/collections/operator-airfiber/products/airfiber-5xhd airFiber 5XHD]
  
|[https://store.ui.com/collections/operator-airfiber/products/airfiber-5xhd airFiber 5XHD]
  +
|DHCP
−
|(AREDN LAN)
  
−
|to [[Fish Ranch]]
 +
|to [[Fish Ranch]], Management VLAN 100
  +
|-
  +
|[https://store.ui.com/collections/operator-airmax-and-ltu/products/ltu-rocket UISP LTU Rocket]
  +
|DHCP
  +
|to San Carlos, Management VLAN 100
  +
|-
  +
|[https://ark.intel.com/content/www/us/en/ark/products/217669/intel-nuc-11-essential-kit-nuc11atkc4.html NUC11]
  +
|10.250.201.134
  +
|NUC11ATKC4 + 32GB Memory + 512GB NVME
  +
|-
  +
|EdgePower 24V
  +
|DHCP
  +
|
 
|}
  
|}
 
{| class="wikitable"
  
{| class="wikitable"
Line 33: Line 123:
 
|2
  
|2
 
|AREDN DtD
  
|AREDN DtD
  +
|-
  +
|10
  +
|Swallow XLINK
  +
|-
  +
|13
  +
|Fish Ranch XLINK
  +
|-
  +
|15
  +
|San Carlos XLINK
 
|-
  
|-
 
|100
  
|100
 
|AREDN LAN
  
|AREDN LAN
  +
|-
  +
|911
  +
|Emergency local management
 
|}
  
|}
 
{| class="wikitable"
  
{| class="wikitable"
  +
|+KN6PLV-SANBRUNO-ROUTER (Mikrotik CRS112-8P-4S-IN)
−
|+EdgePoint R6
  
 
!Port
  
!Port
 
!Description
  
!Description
Line 44: Line 146:
 
!PoE
  
!PoE
 
!Notes
  
!Notes
−
|-
  
−
|0
  
−
|(not connected)
  
−
|1, 2, (100)
  
−
|Off
  
−
|DHCP on VLAN1
  
 
|-
  
|-
 
|1
  
|1
−
|W2GMD-SANBRUNO-NSM5
 +
|KN6PLV-SANBRUNO-RM5
  +
|2
−
|1, 2, (100)
  
 
|24v
  
|24v
 
|
  
|
 
|-
  
|-
 
|2
  
|2
−
|W2GMD-SANBRUNO-RM5
 +
|KN6PLV-SANBRUNO-RM5-2
  +
|2
−
|1, 2, (100)
  
 
|24v
  
|24v
 
|
  
|
 
|-
  
|-
 
|3
  
|3
  +
|KN6PLV-SanBrunoMtn
−
|DISH-TO-FISHRANCH
  
−
|1, 2, (100)
 +
|(100)
−
|Off
 +
|24v
  +
|[[Meshtastic]] node
−
|
  
 
|-
  
|-
 
|4
  
|4
  +
|
−
|W2GMD-SANBRUNO-HAP
  
  +
|
−
|1, 2, (100)
  
 
|Off
  
|Off
 
|
  
|
 
|-
  
|-
 
|5
  
|5
−
|(unused)
  
 
|
  
|
  +
|
−
| Off
  
  +
|Off
  +
|
  +
|-
  +
|6
  +
|
  +
|
  +
|Off
  +
|
  +
|-
  +
|7
  +
|DISH-TO-FISHRANCH
  +
|13, 100
  +
|24v
  +
|
  +
|-
  +
|8
  +
|DISH-TO-SANCARLOS
  +
|10, 15, 16, 100
  +
|24v
  +
|
  +
|-
  +
|sfp9
  +
|
  +
|
  +
| -
  +
|
  +
|-
  +
|sfp10
  +
|
  +
|
  +
| -
  +
|
  +
|-
  +
|sfp11
  +
|KN6PLV-SANBRUNO-HAP
  +
|2, (100)
  +
| -
  +
|hAP provides DHCP address to non-AREDN devices
  +
|-
  +
|sfp12
  +
|KN6PLV-SANBRUNO-SRV
  +
|2, 10, 13, 15, 16, (100)
  +
| -
 
|
  
|
 
|}
  
|}
 
{| class="wikitable"
  
{| class="wikitable"
  +
|+KN6PLV-SANBRUNO-HAP
−
|+hAP
  
 
!Port
  
!Port
 
!Description
  
!Description
Line 89: Line 227:
 
|-
  
|-
 
|1
  
|1
  +
|to EdgePower 24V
−
|
  
−
|(1)
 +
|(U)
  +
|Reconfigured as a "LAN" port to access the EdgePower which also provides PoE
−
|WAN
  
 
|-
  
|-
 
|2
  
|2
 
|
  
|
 
|
  
|
−
|LAN
 +
|
 
|-
  
|-
 
|3
  
|3
 
|
  
|
  +
|(U)
 
|
  
|
−
|LAN
  
 
|-
  
|-
 
|4
  
|4
 
|
  
|
  +
|(U)
 
|
  
|
−
|LAN
  
 
|-
  
|-
 
|5
  
|5
  +
|KN6PLV-SANBRUNO-ROUTER
−
|EdgePoint R6
  
−
|(LAN), 2
 +
|(U), 2
  +
|Provides DHCP addresses to LAN devices
−
|DtD
  
 
|}
  
|}
   
 
=== Notes ===
  
=== Notes ===
−
Part of the [[Bay Area Backbone]] connecting to [[Fish Ranch]].
 +
Part of the [[Bay Area Backbone]] connecting to [[Fish Ranch]], [[San Carlos]] and Swallow.
   
−
=== Plans ===
 +
=== New Mounts ===
  +
New mounts have been design using a 2" galvanized pipe attached to galvanized struts using pipe clamps. The struts are in turn attached to the tower using beam camps. The design can be found [[:File:Mount @ San Bruno Mtn.pdf|here]].
   
  +
All our equipment is mounted on two of these new mounts.
−
* 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 ==
 +
=== Future Plans ===
  +
No current plans.
−
[[File:San Bruno to Fish Ranch.jpg|thumb|200x200px|On axis view from antenna]]
  
   
−
=== DISH-TO-FISHRANCH ===
 +
=== Completed Work ===
−
Radio: airFiber 5XHD
  
   
  +
==== August 2024 ====
−
Frequency: 5.99 GHz (Unlicensed use - [https://www.fcc.gov/document/fcc-opens-6-ghz-band-wi-fi-and-other-unlicensed-uses FCC note])
  
   
  +
* Adjusted azimuth of RAC-1 to provide a better connection to City Hall in San Bruno. From the map, the sector is no longer centered on City Hall (it was before) but for whatever reason, this gives a more reliable connection for the same SNR. Unclear why this is. Mike has suggested moving the sector to a different spot on the tower to see if that works better.
−
Bandwidth: 60 MHz
  
   
  +
==== March 2024 ====
−
Antenna: Ubiquiti RD-5G30-LW 30 dBi
  
   
  +
* Replaced Mikrotik CRS112-8P-4S-1N with Mikrotik RB5009UPr+S+in
−
Location: 37.68678, -122.43527
  
   
  +
==== January 2024 ====
−
Altitude: 400m
  
   
  +
* Replaced RAC-2's 90° sector with 120°sector.
−
Bearing: 56° toward Oakland
  
   
−
=== W2GMD-SANBRUNO-HAP ===
 +
==== August 2023 ====
−
Radio: Mikrotik hAP
  
   
  +
* Replace Rocket M5s with Rocket 5AC Lites
−
Antenna: -
  
   
  +
==== July 2023 ====
−
Location: Inside the HAM Shack
  
  +
* Switched airFiber radios to support multipoint radio at [[Fish Ranch]].
   
  +
==== June 2023 ====
−
Altitude: -
  
  +
* Based on Mike's feedback from the May visit, rerouted all our cables from the "downspout" entry into the shack to the "gland" entry point. Now all our cables go in the official way.
  +
* Rerouted the south cabling on the tower to follow and hide behind the tower beams (per Mike) to make the install much cleaner.
  +
* Move the NUC11 ethernet cable to the switch to allow experimenting using the NUC to manage the backbone traffic.
  +
* Installed the new rubber entry "thingy", rerouted cables through it, and trimmed and re-terminated.
  +
* Installed new Mikrotik Router CRS112-8P-4S-IN
  +
* Removed UISP Router and the rack shelf it was on.
   
  +
==== May 2023 ====
−
Bearing: -
  
  +
* Non-AREDN related work at the site, but also involved tidying up cabling for various devices, including some of AREDN's ethernet.
−
[[File:San Bruno - RM5.jpg|thumb|200x200px|On axis view from antenna]]
  
   
−
=== W2GMD-SANBRUNO-RM5 ===
 +
==== April 2023 ====
  +
* Added separate power backup system using EdgePower 24V with a 200Ah LiFePo4 battery.
−
Radio: Ubiquiti Rocket M5
  
  +
* Added a NUC11 (minipc) to experiment with service hosting. Idle power draw is ~4W. NUC runs Proxmox to allow virtualization of services.
   
  +
==== March 2023 ====
−
Antenna: 120 degree sector
  
  +
* Re-terminated the cable to KN6PLV-SANBRUNO-RM. Radio was replaced thinking the connector was broken, but looks like it was bad termination. Note that the cable to this radio is only single skinned rather than the double skinned burial grade we now use.
   
  +
== Hosted Services ==
−
Location: 37.68674, -122.43525
  
  +
An on-site NUC11 running Proxmox provides locally hosted services. The platform was chosen for its low idle power consumption (4 watts) and flexibility.
   
  +
=== Services ===
−
Altitude: 387m
  
   
  +
* Mesh Map
−
Bearing: 159° toward Millbrae
  
  +
* KN6PLV-SanBruno-VNode (virtualize AREDN node)
−
[[File:San Bruno NSM5.jpg|thumb|200x200px|On axis view from antenna]]
  
   
−
=== W2GMD-SANBRUNO-NSM5 ===
 +
== Meshtastic ==
  +
A [[Meshtastic]] node '''KN6PLV-SanBrunoMtn''' is mounted above the radio KN6PLV-SANBRUNO-RM5. We plan to remove this node in the future.
−
Radio: Ubiquiti NanoStation M5
  
−  
−
Antenna: Build in
  
−  
−
Location: 37.68673, -122.43532
  
−  
−
Altitude: 392m
  
−  
−
Bearing: 236° toward Colma
  
   
 
== Coordination ==
  
== 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 [http://lists.lns.com/pipermail/sbruno_shack/ Sbruno_shack]. Unfortunately this is an invite only group with no public archives.
 +
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 [http://lists.lns.com/pipermail/sbruno_shack/ Sbruno_shack]. Unfortunately this is an invite only group with no public archives.
   
 
== Commercial Neighbors ==
  
== Commercial Neighbors ==
Line 195: Line 321:
 
== Contacts ==
  
== Contacts ==
   
  +
=== Site Admin ===
−
* Tim Wilkinson - KN6PLV - tim@sfwem.net
  
 
* Steve Ligtelyn - KC6SVW - steve@tcomeng.com
  
* Steve Ligtelyn - KC6SVW - steve@tcomeng.com
 
* Matthew Kaufman - KA6SQG - matthew@eeph.com
  
* Matthew Kaufman - KA6SQG - matthew@eeph.com
  +
  +
=== Mesh Admin ===
  +
  +
* Tim Wilkinson - KN6PLV - tim@sfwem.net

Latest revision as of 09:28, 14 August 2024

San Bruno Ham Tower

Site located on San Bruno Mountain, next to Building 7, near the KTSF transmitter (map)(photos)

Nodes

San Bruno Mtn Shack Equipment.jpg

KN6PLV-SANBRUNO-HAP

  • Radio: Mikrotik hAP AC2
  • Antenna: Built-in (provides onsite wifi access to mesh)
  • Location: Inside the HAM Shack
  • Altitude: 385m
  • Bearing: N/A
On axis view from antenna

KN6PLV-SANBRUNO-RAC5-1

  • Radio: Ubiquiti Rocket 5AC Lite
  • Antenna: 120° sector
  • Location: 37.68674, -122.43525
  • Altitude: 387m
  • Bearing: 159° toward Millbrae
On axis view from antenna

KN6PLV-SANBRUNO-RAC5-2

  • Radio: Ubiquiti Rocket 5AC Lite
  • Antenna: 120° sector
  • Location: 37.68673, -122.43532
  • Altitude: 392m
  • Bearing: 207° toward Skyline College

KN6PLV-SANBRUNO-VNODE

  • Radio: None
  • Antenna: N/A
  • Location: 37.68673, -122.43532
  • Altitude: 392m
  • Bearing: N/A

Backbone

On axis view from antenna

Dish to Fish Ranch

  • Radio: airFiber 5XHD
  • Frequency: 6.025 GHz (FCC OET Experimental License WN2XRO)
  • Bandwidth: 40 MHz
  • Antenna: Ubiquiti RD-5G30-LW 30 dBi
  • Location: 37.68678, -122.43527
  • Altitude: 400m
  • Bearing: 56° toward Oakland
ToSanCarlos.jpg

Dish to San Carlos, Swallow, Fire Station 8 & Black Mountain (Site 4)

  • Radio: UISP LTU Rocket
  • Frequency: 5.965 GHz (GCC OET Experimental License WN2XUD)
  • Bandwidth: 40 MHz
  • Antenna: Ubiquiti RD-5G30-LW 30 dBi
  • Location: 37.68678, -122.43527
  • Altitude: 400m
  • Bearing: 149° toward San Carlos
  • Read Only Access: mesh / aredn-back-bone

Site Details

Tower

The tower has a 4° slope on the main lower beams. The base of the tower is approximately 23 feet wide. The first horizontal beam is 8 feet from the ground. The second beam is 7 feet above the first. The supporting angled beams, running from the group, are at an angle of 37° from vertical. The ham shack is located on the south side of the tower with a slight peeked roof. The top of the roof peek is 6 feet from the second beam. The edge of the roof is approximately level with the first beam.

The beams themselves are 3.5in horizontally, 3in vertically, and 0.25in thick with a rounded edge. The double beam which forms the second horizontal beam is 1.25in thick.

Mounting

All equipment must be mounded on galvanized supports which are themselves attached to the tower using beam clamps. All current mounting brackets should be considered unusable. Mounts using "stacked" struts are no longer allowed.

Cabling

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!). Cable loops are discouraged, as is excessive cable in the shack.

Power

The site provide main power (without backup) as well as 24vdc, 12vdc and -24vdc (breakers not provided) with battery backup. No solar or generator.

Originally we used the provided backup 24vdc power, but switched to our own 200Ah battery (~2 days of power) to avoid negatively impacting the rest of the site's tenants.

Configuration

Currently the site has an Mikrotik hAP AC2, two Ubiquiti Rocket M5 + 120 degree sector antennas, a Ubiquiti UISP Router, two Ubiquiti AirFiber dish - one pointing at Fish Ranch, the other at San Carlos, and a NUC11 server. All device are power either directly, or via the router, from the our own EdgePower with backup battery.

Devices
Device IP Notes
MIkrotik Router CRS112-8P-4S-IN DHCP
airFiber 5XHD DHCP to Fish Ranch, Management VLAN 100
UISP LTU Rocket DHCP to San Carlos, Management VLAN 100
NUC11 10.250.201.134 NUC11ATKC4 + 32GB Memory + 512GB NVME
EdgePower 24V DHCP
VLANs
VLAN Description
1 AREDN WAN
2 AREDN DtD
10 Swallow XLINK
13 Fish Ranch XLINK
15 San Carlos XLINK
100 AREDN LAN
911 Emergency local management
KN6PLV-SANBRUNO-ROUTER (Mikrotik CRS112-8P-4S-IN)
Port Description VLANs PoE Notes
1 KN6PLV-SANBRUNO-RM5 2 24v
2 KN6PLV-SANBRUNO-RM5-2 2 24v
3 KN6PLV-SanBrunoMtn (100) 24v Meshtastic node
4 Off
5 Off
6 Off
7 DISH-TO-FISHRANCH 13, 100 24v
8 DISH-TO-SANCARLOS 10, 15, 16, 100 24v
sfp9 -
sfp10 -
sfp11 KN6PLV-SANBRUNO-HAP 2, (100) - hAP provides DHCP address to non-AREDN devices
sfp12 KN6PLV-SANBRUNO-SRV 2, 10, 13, 15, 16, (100) -
KN6PLV-SANBRUNO-HAP
Port Description VLANs Notes
1 to EdgePower 24V (U) Reconfigured as a "LAN" port to access the EdgePower which also provides PoE
2
3 (U)
4 (U)
5 KN6PLV-SANBRUNO-ROUTER (U), 2 Provides DHCP addresses to LAN devices

Notes

Part of the Bay Area Backbone connecting to Fish Ranch, San Carlos and Swallow.

New Mounts

New mounts have been design using a 2" galvanized pipe attached to galvanized struts using pipe clamps. The struts are in turn attached to the tower using beam camps. The design can be found here.

All our equipment is mounted on two of these new mounts.

Future Plans

No current plans.

Completed Work

August 2024

  • Adjusted azimuth of RAC-1 to provide a better connection to City Hall in San Bruno. From the map, the sector is no longer centered on City Hall (it was before) but for whatever reason, this gives a more reliable connection for the same SNR. Unclear why this is. Mike has suggested moving the sector to a different spot on the tower to see if that works better.

March 2024

  • Replaced Mikrotik CRS112-8P-4S-1N with Mikrotik RB5009UPr+S+in

January 2024

  • Replaced RAC-2's 90° sector with 120°sector.

August 2023

  • Replace Rocket M5s with Rocket 5AC Lites

July 2023

  • Switched airFiber radios to support multipoint radio at Fish Ranch.

June 2023

  • Based on Mike's feedback from the May visit, rerouted all our cables from the "downspout" entry into the shack to the "gland" entry point. Now all our cables go in the official way.
  • Rerouted the south cabling on the tower to follow and hide behind the tower beams (per Mike) to make the install much cleaner.
  • Move the NUC11 ethernet cable to the switch to allow experimenting using the NUC to manage the backbone traffic.
  • Installed the new rubber entry "thingy", rerouted cables through it, and trimmed and re-terminated.
  • Installed new Mikrotik Router CRS112-8P-4S-IN
  • Removed UISP Router and the rack shelf it was on.

May 2023

  • Non-AREDN related work at the site, but also involved tidying up cabling for various devices, including some of AREDN's ethernet.

April 2023

  • Added separate power backup system using EdgePower 24V with a 200Ah LiFePo4 battery.
  • Added a NUC11 (minipc) to experiment with service hosting. Idle power draw is ~4W. NUC runs Proxmox to allow virtualization of services.

March 2023

  • Re-terminated the cable to KN6PLV-SANBRUNO-RM. Radio was replaced thinking the connector was broken, but looks like it was bad termination. Note that the cable to this radio is only single skinned rather than the double skinned burial grade we now use.

Hosted Services

An on-site NUC11 running Proxmox provides locally hosted services. The platform was chosen for its low idle power consumption (4 watts) and flexibility.

Services

  • Mesh Map
  • KN6PLV-SanBruno-VNode (virtualize AREDN node)

Meshtastic

A Meshtastic node KN6PLV-SanBrunoMtn is mounted above the radio KN6PLV-SANBRUNO-RM5. We plan to remove this node in the future.

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

Site Admin

  • Steve Ligtelyn - KC6SVW - steve@tcomeng.com
  • Matthew Kaufman - KA6SQG - matthew@eeph.com

Mesh Admin

  • Tim Wilkinson - KN6PLV - tim@sfwem.net
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