Cross-Band Repeater Question
Moderator: Queue Moderator
-
- Posts: 194
- Joined: Sun Feb 16, 2003 10:18 pm
Cross-Band Repeater Question
OK everyone that has been helping me in the past...
We have our system up and running. Only one problem; EMS is on VHF High-Band and PD is on 800mHz Type II. My question now is, with our two respective systems, isn't there a way to do a cross-band repeater where one of our channels on the VHF radios will talk to them on their 800 system and same for them? Let me know what all we need. Is this a more expensive way to do it or is it better just to have to carry 2 radios when you're on that sort of call? Thanks!
Dereck Pristas, EMT-B
Chief
Wright State University
Emergency Medical Services
pristas.2@wright.edu
We have our system up and running. Only one problem; EMS is on VHF High-Band and PD is on 800mHz Type II. My question now is, with our two respective systems, isn't there a way to do a cross-band repeater where one of our channels on the VHF radios will talk to them on their 800 system and same for them? Let me know what all we need. Is this a more expensive way to do it or is it better just to have to carry 2 radios when you're on that sort of call? Thanks!
Dereck Pristas, EMT-B
Chief
Wright State University
Emergency Medical Services
pristas.2@wright.edu
There are at least a couple of ways to do this.
First is a cross band repeater - sometimes called a linker - that consists of on radio that talks to each system.
Second would be a control station radio that talks to the VHF system and is connected to the Central Electronics of the 800 system. The control station can be cross connected through the console system to whatever talkgroup is required. This can be done on the fly as needed or can be programmed as a permanent 'hard patch'.
The advantage of the console connected configuration vs. the 'linker' is faster response and the fact that when there is traffic on the VHF side no channel will be assigned on the 800 side unless there are units affiliated, thereby conserving channel resources.
A variation of the console connected method would be a direct [e.g. wire line] connection from the Central electronics to the VHF repeater instead of a control station, saving the cost of a control station and optimizing response time.
The 800 system administrator and/or maintenance organization need to be involved to select the optimum configuration for their system.
First is a cross band repeater - sometimes called a linker - that consists of on radio that talks to each system.
Second would be a control station radio that talks to the VHF system and is connected to the Central Electronics of the 800 system. The control station can be cross connected through the console system to whatever talkgroup is required. This can be done on the fly as needed or can be programmed as a permanent 'hard patch'.
The advantage of the console connected configuration vs. the 'linker' is faster response and the fact that when there is traffic on the VHF side no channel will be assigned on the 800 side unless there are units affiliated, thereby conserving channel resources.
A variation of the console connected method would be a direct [e.g. wire line] connection from the Central electronics to the VHF repeater instead of a control station, saving the cost of a control station and optimizing response time.
The 800 system administrator and/or maintenance organization need to be involved to select the optimum configuration for their system.
Ask "Will" If He Can Do It With Two Radios.
Ask "Will" If He Can Help You By Using Two Radios And
An Extender?
- firemanbatt
- Fail 01/90
- Posts: 356
- Joined: Fri Dec 06, 2002 6:51 pm
Here is a product that goes beyond a simple linker or RICK.
This should be just the ticket for public safety applications.
http://www.linkcomm.com/security.html
This should be just the ticket for public safety applications.
http://www.linkcomm.com/security.html
- chipjumper
- Batboard $upporter
- Posts: 629
- Joined: Thu Nov 21, 2002 10:14 pm
- What radios do you own?: XTS5000 for work
The Mobexcom unit by Futurecom is excellent for this purpose as well. It integrates directly with a W4 Spectra or MCS2000 Model III. We have a couple of the units in service, they work great. Their website's a bit of a pain, best veiwed with a high-speed connection. Here's an excerpt from their website:
Provides extended portable radio coverage.
Ready for In-Band or Cross-Band applications.
Operates in VHF/UHF/800 bands (25 or 12.5 kHz channel spacing).
Fully synthesized operation.
Field programmable, up to 64 channels.
Full duplex operation.
Simplex mobile extender version also available.
Supports major Trunking and Conventional Systems.
Field (flash) upgradeable.
Application specific customization available.
Mobile, System, and Local mode of operation.
Seamless interface to a mobile radio through the control head bus.
Local control from a mobile radio control head.
Remotely controlled by a dispatcher.
Remotely controlled by a portable user.
Supports trunking queue tones.
Supports trunking group calls.
Supports trunking individual calls.
Supports emergency calls.
Futurecom’s Mobexcom II radio is designed to be physically linked to a mobile radio, thus providing a vehicular repeater communications interface between potentially far ranging portables and a central dispatch station. The repeater’s mode of operation is selected by:
mobile radio operator from the control head
portable radio operator via DTMF signaling
dispatcher via digital or tone signaling
Todd
Provides extended portable radio coverage.
Ready for In-Band or Cross-Band applications.
Operates in VHF/UHF/800 bands (25 or 12.5 kHz channel spacing).
Fully synthesized operation.
Field programmable, up to 64 channels.
Full duplex operation.
Simplex mobile extender version also available.
Supports major Trunking and Conventional Systems.
Field (flash) upgradeable.
Application specific customization available.
Mobile, System, and Local mode of operation.
Seamless interface to a mobile radio through the control head bus.
Local control from a mobile radio control head.
Remotely controlled by a dispatcher.
Remotely controlled by a portable user.
Supports trunking queue tones.
Supports trunking group calls.
Supports trunking individual calls.
Supports emergency calls.
Futurecom’s Mobexcom II radio is designed to be physically linked to a mobile radio, thus providing a vehicular repeater communications interface between potentially far ranging portables and a central dispatch station. The repeater’s mode of operation is selected by:
mobile radio operator from the control head
portable radio operator via DTMF signaling
dispatcher via digital or tone signaling
Todd
No trees were harmed in the posting of this message...however an extraordinarily large number of electrons were horribly inconvenienced.
Welcome to the /\/\achine.
Welcome to the /\/\achine.