CRW is a point-of-presence site at the City of Olive Branch, MS’s water tower nearby Craft Rd and US-78 (34.97440959491132, -89.86623979530327). The top of tower is estimated to be 168.554m elevation.
This deployment is treated as a TIA-606 class 1 deployment. Cabling is not labeled however.
There are two locations for equipment at this site: cabinet 2.2 on the 2nd floor and mast1 on the top of the tower.
This is a square-hole 42 RU tall server cabinet. There are no locks, and the cabinet has no sides, a single glass front, and a single mesh back door. Due to a water leak reported in 2023-03, the cabinet is currently covered by 5 mil plastic on the top and open sides to reduce the amount of water entering. The front and rear were left uncovered to ensure adequate airflow.
|RU||Use, Front||Use, Rear|
|41||cable manager (2u)|
|40||cable manager (2u)|
|37||cable manager (2u)|
|3||ups.crw (2u)||ups.crw (2u)|
|2||ups.crw (2u)||ups.crw (2u)|
Unlocated: 3x 1u full depth racks, 1x 2u part depth rack.
The mast is a P272 2-3/8" x 72" schedule 40 galvanized pipe and is mounted to the structure using two crossover plates SCX7-u. Attached to this mast is a microwave dish (hil.crw), an omnidirectional antenna (omn1.crw), and a length of unistrut houding two switches (r2.crw, r3.crw) and two conduit boxes with network cameras (cam1.crw, cam2.crw, cam3.crw).
Unistrut clamped to mast1. To it there is a 6x6x4 conduit box holding cam2.crw and cam3.crw. There is also attached a 4x4x4 conduit box for cam1.crw. r2.crw and r3.crw are affixed to the unistrut using metal cable tie.
Two cat5e shielded cables going from 2.2-42 to mast1. Two unshielded cat6 cables going from 2.2-42 to 2.1 (OBARC).
2.2-42 is a 24 port CAT5E patch panel mounted in the top of cabinet 2.2.
|3||x-con to cab 2.1 (obarc)|
|4||x-con to cab 2.1 (obarc)|
4 (or 6?) AWG THHN (black) is attaching the cabinet chassis to a grounded conduit on site. There is no dedicated lightning protection or grounding of the cabling interconnects currently. There is no bus bar in the cabinet or at the site.
Single 120VAC 15 Amp AC line running to the cabinet connected to an APC SMT2200RM2U Smart-UPS. All devices connect to this currently. This has a remote management card. The APC RBC43 batteries were last replaced in 2023-03.
psu1 and psu2 are Meanwell MDR-100-24 PSUs located on a shelf-mounted DIN rail in cat2.2. psu3 is a mikrotik 24vdc power supply.
This rack-mount POE injector is a ws-poe-12-1u located in cabinet 2.2. It provides 12 ports 24 VDC passive POE and is powered by a dedicated Meanwell PSU located on a shelf-mounted DIN rail.
|Data+Power 9||2.2-42:? (r3)|
r1.crw is located in cabinet 2.2. It is an MikroTik RB3011UiAS-RM.
|ether7||2.2-42:? (obarc 2.1)|
|ether8||2.2-42:? (obarc 2.1)|
MikroTik PowerBOX mounted on the unistrut on mast1.
MikroTik PowerBOX mounted on the unistrut on mast1.
MikroTik 921UAGS-5SHPacD. hil.crw is a point-to-point link to East Memphis providing backhaul for the CRW site. It is connected via MikroTik Flex-guide cabling to a MikroTik mANT30 that has a MikroTik Sleeve30 installed. It is mounted about 2/3rds of the way up mast1. One end of a mast mount U bolt’s threads have stretched and so it is not easily put on or off.
coconut.crw is located in cabinet 2.2. It is an HP proliant server. It has a single ethernet port and a dedicated iLO port for OOB management. This device is currently on standby – it has no workloads deployed. Long term, the intent is to deploy a k3s cluster to this hardware and have a 2nd availability zone for k3s workloads. This would provide redundancy for systems like DNS and NTP and allow us to migrate services as needed.
Mounted on a 6x6x? conduit box shared with cam3. Currently the lens is full of water and so it is not functional.
Mounted on a 6x6x? conduit box shared with cam2. This can be accessed via BlueIris.
See entries tagged “CRW” on the Subnetting page.
The equipment on this site uses a mixture of licensed and unlicensed spectrum. There are two radios today.
For an estimate of coverage, view the coverage map.
|Frequency||Width||Operations Regulations & License||Emission designator||Mode||Location||EIRP||Radio|
|5825 mhz (802.11an-165)||20 mhz||Part 15, unlicensed||802.11n||mast1||hil.crw|
|5865 mhz (Omni1-5)||5 mhz||Part 97, KM4ECM||nv2||mast1||omn1.crw|
This location has multiple hazards. They include:
- Fall risk associated with working on elevations and elevated platforms both with and without railing
- Falling objects striking personnel below, both associated with the work being performed and generally
- Weather exposure, as there are work areas that have no overhead covering and there are no temperature controlled areas on site
Also, there is no on-site restroom or accessible water.
Access to the top requires climbing multiple sectioned ladders with built-in fall arrest systems. Standard industrial safety harness and cable grip should be used. When working in areas without railing such as the top of the water tower, tethers should also be used. When working on top of the tower, anticipate that about 15 feet of rope will be required to travel from the top hatch to the work area.