Need radio communication help.

[OldmanFCSA]

OK, I know this may not sound like Gun Related Topic, but it is, so bear with me.

In our FCSA 1000 yard competitions, we have shooters on the Line and "pullers" in the Pits.
After 2 relays we switch roles, and transport back from Pits to Line, and back to Pits.

We have serious communication issues sometimes and I am looking for a better method for communication.

Cell phones do not work, no signal in area.
CB Radios do not work.
Handheld inexpensive 2-10 mile radios do not work very well, if at all.
Police or Emergency FM radios work OK, but are expensive, and need recharging daily.

I need a 2-way sound system with Receive & Transmit capabilities on each end.
Sound system such that all individuals can hear range instructions and safety commands, with ear protection in place.
Most shooters use "electronic ear protection" that stops noise over 85 db, but allow hearing commands.

Electrical power is not available at either location, unless I use a battery and inverter, or a generator, of which I have both.

A landline is not practical to install.
I think, but don't know, that an antennae is required at both locations, especially to get reception out of, or into, the steel and concrete lined pit walls, which are below ground level.

Any help would be much appreciated.

[farmerj]

sounds like you want to find some old "out of spec" 2 meter government radios.

These are Part 90 FCC license and rather available for cheap if you can find them on auction. I found one lot of 50 radios go for $75.

They were pulled out of ambulance, fire, police, transportation vehicles because they switched over to 800 mhz systems.

[BemidjiDweller]

Could you set up some sort of closed circuit telephone? I don't know how such a thing would work, but it's an idea.

Edit: Something like this?
http://www.wiki.spacesim.org/index.php/ ... ne_Systems

[farmerj]

http://www.prc68.com/I/TA312.shtml

Good idea.

Get a couple of surplus TA312's or else a couple of TA-1 phones.

[OldmanFCSA]

Source?

Wire source?

Need way to rewind wire on spool after use.

But GOOD IDEAS - Thanks!

[farmerj]

http://www.ebay.com/sch/i.html?_from=R4 ... nkw=ta-312

[yuppiejr]

Wire & Reel:

http://www.american-milspec.com/p-3412- ... 3093a.aspx

http://go-armynavy.com/index.php/vmchk/ ... reels.html

* watch the used/surplus wire, it's often been cut and spliced.. NOS / New Old Stock is probably the way to go.


Phone:

https://www.fairradio.com/catalog.php?m ... &item=3862

Cool stuff in general:

http://www.milspecwire.com/

[Countryfried Frank]

KISS! Get Sound Powered Phones. No power supply except for the speakers voice. They work good on every ship in the Navy. I work at a low voltage company and I can probably get a decent deal on cable. If you're interested PM me once you settle on a system.

[farmerj]

KISS! Get Sound Powered Phones. No power supply except for the speakers voice. They work good on every ship in the Navy. I work at a low voltage company and I can probably get a decent deal on cable. If you're interested PM me once you settle on a system.

Then he would want to get the TA-1 phone system.

[tman]

[JTHubred]

smoke signals, signaling flags...

[farmerj]

signal lamps

[FJ540]

Old satellite dishes can be reconfigured to be used for wifi, so there's probably something you could do with a regular wireless and those dishes.

Signal flags would work too.

[farmerj]

[OldmanFCSA]

Thanks for the ideas, but I would prefer a WIRELESS installation if possible.

I have used Sound Powered systems before - they work great in some applications - but not sure if it will work in this one.

kEEP THE IDEAS COMING - they are appreciated.