Crown Terrace Repeater: Difference between revisions

From PBARC
No edit summary
Line 2: Line 2:


There is also a weather station located at the site; data is available from [https://www.wunderground.com/dashboard/pws/KORBROOK132 Weather Underground, station ID KORBROOK132].
There is also a weather station located at the site; data is available from [https://www.wunderground.com/dashboard/pws/KORBROOK132 Weather Underground, station ID KORBROOK132].
The site is owned by Harbor Water. Only PBARC property is allowed at the site, and all equipment must be labeled. Cameras are forbidden due to privacy concerns.


== Electrical measurements ==
== Electrical measurements ==


The shack has only one 20 A breaker, from the control shack at the site compound. We should not have more load than 16 A on our 20 A breaker, to prevent tripping the breaker in the summertime.
The shack is on a 20 A circuit. However, we should keep our load below 16 A to avoid tripping the breaker during hot weather. It seems that some of Harbor Water's equipment is on the same circuit.


It appears that some water controls use the same multi-conductor cable as power in.
=== AC power ===
 
The power feed to the control shack is 480V, through a transformer, to a breaker subpanel, then to conduit to us.


=== AC power ===
The 2 m repeater draws 12.25 A when transmitting (50 W RF output). This leaves about 3.75 A for other equipment.


* 2 m repeater: 12.25A on 50W TX (not much overhead for other gear)
The DMR repeater draws 1.03 A when transmitting (15 W RF) and 0.25 A when quiescent.
* DMR repeater: 0.25A quiescent, 1.03A on 15W TX
   
   
=== DC battery power ===
=== DC battery power ===


* 2 m repeater: 4.8A on 20W TX (repeater drops to medium RF power while on battery power)
When running on battery power, the 2 m repeater drops to 20 W RF output. At this power level, it draws 4.8A while transmitting and 0.75A while quiescent.
* 2 m repeater: 0.75A while quiescent (listening)
 
* batteries: model 8144, 6-v Deep Discharge (typical Golf Cart type),
* charger: Foval, charges at 1.0 Ah (so it will take a long time to build back a charge after a long outage) (should this be 1.0 A?)
 
== Things to acquire for the site (2022-01-15) ==
 
Waterproof documents box (with desiccant packet)
 
12v Fuse Panel, power pole connectors, ala RigRunner)
 
2-RU rackmount panel (to mount the fuse panel)
 
10x24 machine screws, for use in the Chatsworth 2-post racks
(In a labeled container, with desiccant)
 
== Info from Andy N7SGV, 2022-01-19 ==
 
Harbor Water is in charge of this stie, and we want to stay on their good side...
 
Herman (?) at Harbor Water got us involved at the site... but Herman is leaving Harbor Water...
 
We can ONLY have PBARC property at the site. (PBARC cannot offer access to non-PBARC gear. (Expect that someone from Harbor Water WILL inspect the shack. All our gear should be labeled!)
 
NO cameras will be allowed on-site. Even asking to discuss cameras is likely to make trouble.
(Landowners have extreme privacy concerns. It is a VERY HOT TOPIC.)


== Possible Future Equipment At The Site ==
The batteries are model 8144 6 V deep cycle batteries, typically used in golf carts. The charge controller (made by Foval) only charges at 1 A, so it will take quite some time to recharge after a power outage.


Fire Radio(s): low-power VHF, antenna ~25' up the tower, with solar panels and batteries, being provided by Andy G.
== Things to acquire for the site ==


Water Radio(s) will be 900 MHz SCADA data link radios, antennas mounted on the top section of the tower.
* Waterproof document box with dessicant
* RigRunner or similar fuse panel
* 2-RU rack-mount panel (to mount the fuse panel)
* 10x24 machine screws, for use in the Chatsworth 2-post racks (in a labeled container, with desiccant)


telemetry monitor/reporter ([[Arduino]]/[[Raspberry Pi]], clock, sensors)
{{CC BY-SA}}

Revision as of 15:33, 25 July 2023

The Crown Terrace repeater (146.840 MHz, - offset, 88.5 Hz tone) is one of PBARC's repeaters. It is used for the Health and Welfare Net and Public Service Net.

There is also a weather station located at the site; data is available from Weather Underground, station ID KORBROOK132.

The site is owned by Harbor Water. Only PBARC property is allowed at the site, and all equipment must be labeled. Cameras are forbidden due to privacy concerns.

Electrical measurements

The shack is on a 20 A circuit. However, we should keep our load below 16 A to avoid tripping the breaker during hot weather. It seems that some of Harbor Water's equipment is on the same circuit.

AC power

The 2 m repeater draws 12.25 A when transmitting (50 W RF output). This leaves about 3.75 A for other equipment.

The DMR repeater draws 1.03 A when transmitting (15 W RF) and 0.25 A when quiescent.

DC battery power

When running on battery power, the 2 m repeater drops to 20 W RF output. At this power level, it draws 4.8A while transmitting and 0.75A while quiescent.

The batteries are model 8144 6 V deep cycle batteries, typically used in golf carts. The charge controller (made by Foval) only charges at 1 A, so it will take quite some time to recharge after a power outage.

Things to acquire for the site

  • Waterproof document box with dessicant
  • RigRunner or similar fuse panel
  • 2-RU rack-mount panel (to mount the fuse panel)
  • 10x24 machine screws, for use in the Chatsworth 2-post racks (in a labeled container, with desiccant)

CC BY-SA 88x31.png

Copyright © PBARC Wiki contributors. See the edit history of this page.

This file is licensed under Creative Commons Attribution-ShareAlike (CC BY-SA) 4.0 International.

Retrieved from "https://w7bkg.org/w/index.php?title=Crown_Terrace_Repeater&oldid=2658"