Graham Farmer Freeway Tunnel

General questions on scanning from 30 to 3000Mhz. Not sure what you can receive in your area? Here's the place to ask!

Moderator: yorky

Post Reply
numloxx
Moderator
Moderator
Posts: 468
Joined: Fri Feb 25, 2005 3:39 pm
Amateur callsign: VK6PCB
Location: Maylands, Perth, WA
Contact:

Graham Farmer Freeway Tunnel

Post by numloxx »

Hi all,

I remembered reading when the tunnel first opened, it would have a radio repeater system for AM and FM channels.
I think this included CB, UHF, VHF, car radios etc,

Does anyone know anything about the type of setup/

Cheers
yorky
Moderator
Moderator
Posts: 2630
Joined: Tue Sep 13, 2005 7:46 pm
Location: Perth

Re: Graham Farmer Freeway Tunnel

Post by yorky »

I don't know about the setup but I remember one of the old analogue Police channels was crystal clear driving through it.
"VKI, NJ050 will you be attending the job?"
"Negative VKI, my desk is bolted to the floor".
WARSUG General Scanning Moderator
Zebedee
Site Admin
Site Admin
Posts: 3022
Joined: Thu Feb 24, 2005 10:42 pm
Amateur callsign: VK6DB
Location: Perth
Contact:

Re: Graham Farmer Freeway Tunnel

Post by Zebedee »

numloxx wrote:Hi all,

I remembered reading when the tunnel first opened, it would have a radio repeater system for AM and FM channels.
I think this included CB, UHF, VHF, car radios etc,

Does anyone know anything about the type of setup/

Cheers
No information I could find on CB radios and UHF/VHF commercial radios, but there's definitely an emergency warning system that can "take over" the broadcast radio band in the event of an emergency or incident...

Ref 1: A blog post

Ref 2: Hansard - which mentions "a radio rebroadcast system and variable message signs."

Ref 3: PDF document - mentions "radio re-broadcast system to transmit safety messages to vehicle occupants via the vehicle’s AM/FM radio"
Doug Bell (Zebedee) VK6DB
WARSUG Forum Administrator.

It is very dark.
You are likely to be eaten by a grue.
Tyranus
Moderator
Moderator
Posts: 3746
Joined: Sun Feb 18, 2007 5:41 pm
Amateur callsign: VK6FWDH
Scanners and Receivers: UBC93XLT
Location: Helena Valley
Contact:

Re: Graham Farmer Freeway Tunnel

Post by Tyranus »

There is a repeater built into the tunnels which SES have access to as one of the auxillery channels outside of their normal channels...it's logged as either FRS A or FRS B (on the old radio's) I'd initially thought those were simplex however 2 of our unit members are FRS and advised that one of them was the tunnel.
Stirling SES
Team Leader (Stirling 53)
Vertical Rescue Team Member
K9 7 Support

VK6FWDH
ex-Darlington FB
WARSUG Demi-God I mean Mod
If stupidity got me into this mess, why can't it get me out.
Image
Fastlane
WARSUG top poster
WARSUG top poster
Posts: 1658
Joined: Wed Jul 06, 2005 4:24 pm
Amateur callsign: VK6FLMZ

Re: Graham Farmer Freeway Tunnel

Post by Fastlane »

Tyranus wrote:There is a repeater built into the tunnels which SES have access to as one of the auxillery channels outside of their normal channels...it's logged as either FRS A or FRS B (on the old radio's) I'd initially thought those were simplex however 2 of our unit members are FRS and advised that one of them was the tunnel.
Either chan 57 or 55 works in the Tunnel (I forget which). The 2 x FRS UHF channels are both simplex.
vk6hgr
Site Admin
Site Admin
Posts: 2610
Joined: Thu Feb 24, 2005 10:33 pm
Amateur callsign: VK6HGR
Scanners and Receivers: Various Yaesu, Kenwood, Tait, Simoco and Philips'
Location: Perth, Western Australia
Contact:

Re: Graham Farmer Freeway Tunnel

Post by vk6hgr »

Fastlane wrote: Either chan 57 or 55 works in the Tunnel (I forget which).
I think they rebroadcast both into the tunnel.
Gavin Rogers; VK6HGR
http://vk6hgr.ampr.org/
WARSUG forum administrator
Site and stream donations: https://www.paypal.me/vk6hgr
BuddahFRS
150+ posts
150+ posts
Posts: 460
Joined: Wed Oct 31, 2007 7:28 pm
Location: Armadale

Re: Graham Farmer Freeway Tunnel

Post by BuddahFRS »

Tyranus wrote:There is a repeater built into the tunnels which SES have access to as one of the auxillery channels outside of their normal channels...it's logged as either FRS A or FRS B (on the old radio's) I'd initially thought those were simplex however 2 of our unit members are FRS and advised that one of them was the tunnel.
yes this is correct. Its called FRS Tunnel
it is on the Motorolla UHF Portable Radios.
----BUDDAH VFRS----
VK6DF
Posts: 89
Joined: Sun Jun 08, 2008 9:49 pm
Location: karratha w.a

Re: Graham Farmer Freeway Tunnel

Post by VK6DF »

all the emergency services have rebroadcast systems through the tunnel, commercial and CB repeaters how ever do not.
all the FM and AM broadcast channels are re transmitted through there as well.

there is also a dedicated computer in the comms room with win radio so the techs can monitor the comms inside the tunnel as well. the am transmitters would cook them selfs coz the fans would die.. pain in the bum. :) gee thats going back a few yrs now.
yorky
Moderator
Moderator
Posts: 2630
Joined: Tue Sep 13, 2005 7:46 pm
Location: Perth

Re: Graham Farmer Freeway Tunnel

Post by yorky »

On another rebroadcast note through the tunnel, I noted that Three 3G had perfect signal and the best ping I've ever seen, I normally get between 300-1500ms around town but through the tunnel got 100-150ms :smt007
"VKI, NJ050 will you be attending the job?"
"Negative VKI, my desk is bolted to the floor".
WARSUG General Scanning Moderator
Post Reply