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Bucks County emergency communications plan
#1
I'm going to set up a repeater at my house for emergency communications between members of Bucks County, specifically around the Doylestown area. I'm getting this repeater for free, because of an FCC mandate that requires narrowbanding, and this repeater is not capable of narrowband operation. That means it will be for emergency use only, and not for general use/chatter. In fact, the repeater will remain OFF unless there is an emergency.

I'm reaching out to you guys so we can figure out what frequencies to operate on. It's UHF and will be a 5 MHz split. I believe it will be a 45 watt repeater. We also need to decide what PL codes are to be used.

If anyone around my area has UHF radios and wants to be involved in this, either post in this thread or send me a PM. Ultimately I want to keep the frequencies and PL's secret, and only shared by members of this site, so keep that in mind while posting.

Also, if anyone else already has a repeater and are willing to use it for this purpose, speak up.
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#2
How much power does it draw, and does it have the ability to be powered by 12 or 24vdc? I'm just thinking in the case of an emergency it would be great if it could be powered by a battery bank and recharged by solar.
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#3
streaker69;77441 Wrote:How much power does it draw, and does it have the ability to be powered by 12 or 24vdc? I'm just thinking in the case of an emergency it would be great if it could be powered by a battery bank and recharged by solar.

Yes, it can be powered by 12 volts, but I'm not sure what the draw is. It's actually two mobile radios (one for RX, one for TX) stacked on top of a 12V power supply. So in the case of my generator failing, or running out of gas, the power supply could be removed and you could power each radio off of an alternative 12V power source.
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#4
Just stick an ammeter inline and power them up, see how much the draw, but I'd also think that there should be specifications for them somewhere on their draw. I'm gonna guess they'll draw around 4A.
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#5
streaker69;77445 Wrote:Just stick an ammeter inline and power them up, see how much the draw, but I'd also think that there should be specifications for them somewhere on their draw. I'm gonna guess they'll draw around 4A.

It won't be a problem to figure it out. I work in an electronics lab at a radio shop. Wink

The best way is to actually measure it, because the power output is adjustable. And there are two radios, and they wont draw the same amount. The receive radio will draw practically nothing when idle, and barely more than that when receiving. The transmit radio will draw the bulk of the power, probably over 90% of the total consumption.
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#6
Anyone interested? Shrug

*crickets*
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#7
Is this amateur freqs or public service? You aware of FCC regs and all? No offense but I don't know your background in all this. I'm an advanced class amateur radio op.
Inline, proud to be a member of pa2a.org since Jan 2013.
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#8
Inline;78152 Wrote:Is this amateur freqs or public service? You aware of FCC regs and all? No offense but I don't know your background in all this. I'm an advanced class amateur radio op.

I decided to get a license for commercial operation, narrowband. Despite the repeater being "wideband only," it can actually be tuned to 12.5kHz of deviation with the RSS. This way the repeater can be on air 24/7, and still be FCC compliant. Also there will be less chance of interference since I'm getting a license. No one will need to have a ham license to use it.

FWIW, I'm located right by Lake Galena which is an outstanding repeater site. The only problem is I wont be able to get the antenna above the trees. It will be a Super Stationmaster placed about 6 feet above my roof. We'll see how well it works.
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#9
bac0nfat;78144 Wrote:Anyone interested? Shrug

*crickets*

PM me with the relevant info. I'm just down the road from you.

(I know very little about radios).
A gun rack in a pick-up is not for holding guns. Its a place for women to hold on to. Smile
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#10
bac0nfat;78144 Wrote:Anyone interested? Shrug

*crickets*

Band or frequency?? UHF has many meanings.

PM me. I'm a couple of counties away, don't know if I can play depending on wavelength & propagation. I'll contribute what I can, tho.
Subject matter expert on questions no one's asking.
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