What do you plan to use the repeater for? The 10 national MED frequencies are used only for emergency medical communications between ambulances, dispatchers, and hospitals. Generally, a couple of the channels are reserved for dispatch, and the rest are assigned for the ambulances to communicate with hospital emergency rooms. The exact use for each channel, as well as frequency coordination for these channels, must be approved by your state's emergency medical service (EMS) regulatory agency - and the EMS regulatory agency must sign off on your application if you plan to use the MED frequencies, or other frequencies reserved for medical use.
For example, in Connecticut (I'm a Connecticut EMT, and former Director of an ambulance service), ambulances use frequencies other than MED channels as their primary dispatch channel. We use MED 9 and MED 10 to communicate with the regional dispatch centers. The state is divided into regions, and each region will use either MED 9 or MED 10 as its primary regional frequency (neighboring regions use the alternate MED dispatch channel to reduce interference). There is a different PL tone for each region, but the radios also have a state-wide PL tone so that an ambulance from one region can communicate when operating in a different region. If we need to communicate from an ambulance to the hospital, one of the other MED channels (1-8) is assigned by the regional dispatch center on a case-by-case basis. My point is, that use of the MED channels is highly structured, and you need to make sure that what you want to do fits in with your state's plan. The folks in charge of your emergency room should be able to tell you which agency regulates EMS in your state. Stan It sounds like you want to ----- Original Message ----- From: "Ray Brown" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Sunday, April 11, 2004 11:42 PM Subject: [Repeater-Builder] Looking at a UHF repeater... > Howdy, everyone. I have an option to buy a working, used repeater from a friend of mine. > It's a Motorola, formerly owned by our local ambulance company. Looks like it was in > operation from 1988 until at least 1994. > > The model is C64RCB-3105AT. According to Kevin's info on the web page, it is a > Compra-Station, between 70 and 99 watts, 403-512 MHz, RC series (?), 120 VAC, > PL, Narrow channel, T1/R1, DC remote, and RT repeater. It's on 462.975 / 467.975, > with a PL. > > It looks like everything's there... PA, exciter, card cage, reciever, power supply, and > the 4 cavities. It has the Squelch Gate, TimeOut timer, DC transfer, Station control > and Line driver cards installed. I have NOT turned it on yet, wondering if there might > be some issue with the p/s caps, being suddenly turned on after being off for several > years, don't want it to go up in smoke, eh? :-) > > SO... this brings up a bunch of questions. Some directly apply, others, well, we're not > all amateurs here, are we? :-) > > 1) He's asking $200. Does that sound like a good price for it? :-) > > 2) What's the duty cycle? And, if it said narrow channel, is it 12.5 MHz spacing, > or 25? I'm eventually going to put it in my hospital, which ironically does NOT have > any equipment on this frequency or any of the local med frequencies, but it'd be > nice to put in 12.5-capable equipment, otherwise I may just convert it to amateur. > > 3) Our competing hospital, 1.5 miles away (only 2 of us left here in town) is licensed > for all the med frequencies but I don't think they use any of them. The ambulance system > (our hospitals jointly owns the ambulance) dropped all its' med licenses a couple of years > ago... In fact, I'm not sure they have current licenses for their HEAR radios, and they use > city-owned radios for dispatch and talking to the hospitals. So... what kind of traffic is > allowed on a med freq? > > 4) And finally, I know I got to go thru our radio coordination (IAFC, I believe) > before I file with the FCC but... trying to look at FCC form 1070, I think we'd be > under LMRS, PMRS, below 470 MHz, which would be $150... right? And I > wonder if I really need to go thru the IAFC? :-) > > I thank you for your time. > > _Ray_ KB�STN > > > > > > > > Yahoo! Groups Links > > > > > > Yahoo! Groups Links Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
