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Creating/Renting a national radio system

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memtech3

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This could be nationwide IF we end up rescuing in other areas. If not, just parts of Texas and other cites on the coast that have previously been hit by flooding etc.

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memtech3

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Budget will be established but I haven't been given a budget yet. I am generating a possible solution and the board will approve or DENY. If I get budget info, I will post if necessary.

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disastercomm

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Understood. My guess is this is for Crowd Source Rescue / Cajun Navy type stuff? I have a small pelican case system that can be put in a boat (or truck) that can talk back into the Zello or other channel. I hear you on Texas and coastal cities however, once you get the radio traffic into an IP network it will go 10, 100, 1000’s of miles.
 

memtech3

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I know about how to make a pelican case doodad. That is the plan. However, I need the radio network itself to go 100s of thousands of miles. I am not sure what to use as the link between repeaters. I also need a pelican case style repeater (could be big if needed) or something that would fit in a truck or van or boat.

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disastercomm

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Agreed on all points. Your radio network (repeater or simplex) needs a RoIP gateway into a Zello or other channel is all. This can be accomplished via MSAT-G3, Cubic, Iridium, etc. Pelican repeater is no problem either just be sure and put in a RoIP gateway with it and backhaul via any medium mentioned above.
 

disastercomm

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You can install vehicle repeaters that are as small as mobile radios and larger ones that go into trailers and SUV’s such as the Red Cross ECRV’s that I was the PM on. there is essentially no one size fits all solution but you can take multiple technologies that have been discussed above and integrate them together to meet your requirements.
 

disastercomm

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No as most of those are rackmount size but not impossible to integrate into a mobile configuration. UHF? 800? 12v? 110? How many watts’ etc.
 

memtech3

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50watt, uhf, 12v and ac (I can use an inverter if needed) I was thinking that batteries could be cycled out.

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memtech3

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Could use slim repeaters, have a rack in the trunk of a suv or truck and have 8 or so repeaters in vehicle (if needed)

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alcahuete

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I would like to avoid itinerint frequencies as they might get busy. If needed, we might have to liscence frequencies for each area that we may need repeaters in. Is there a way to waive the liscencing fees?

That's all good and well, but as was mentioned several posts up, the chances of getting the exact same frequencies to use in multiple states is zero. That means either having equipment on hand for all the combination of frequencies depending on the states (completely unreasonable), or programming the repeaters, re-tuning the duplexers, etc., prior to deploying. Very time consuming and very silly.

As far as the license fees, the FCC highly discounts for non-profit organizations. They won't be waived though. Really the license fee isn't the bad part. It's the frequency coordination that would be extremely costly, unless you know some frequency coordinators that will do it for free. With the itinerant frequencies, it is quite literally a one-time $170 fee ($60 I believe for non-profits), and that's it. No frequency coordination, etc.

That is by far the easiest and cheapest way to go, and honestly the easiest from a logistical point of view. The posts were correct about them possibly being congested. No two ways about that. But getting frequencies to use in every state is just asking for trouble, IMO.
 

TampaTyron

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I am still not clear on why Tier 3, why so many repeaters, why so much data, etc..... maybe scale your system out with one or 2 voice paths and see how the costs break out. Do you really need dozens of voice talkgriups and dozens of data paths available? You will need a Zello ROIP box, MSAT terminal, etc per single voice Talkgroup you are looking to connect to the Zello network.

Also, you have both a technical need AND you are dictating the solution. This is a recipe for ending up dissatisfied with the end product. If you have a list of requirements vs. wants, then sort you needs into a list of priorities. Otherwise, you may be excluding several other viable solutions by demanding Tier 3. TT
 
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