Communications

Internal

Wireless phone system - GSM/Bluetooth/WIFI accesspoints feeding into a PBX such as Asterisk.

Paging system - "Smart system" where everyone wears a transponder so the communications system knows where to page/ring you?

Fire/Life Safety systems - Detection and Warning

Entertainment - Internal Fiberoptic network to move large quantities of data - movies, etc? Cable TV analog

External

Satellite Communications Satcomms could cover phone, internet and TV. Our current provider at my 'remote location' is all SatBased to the UK. We have a sat Modem, and on the London end our VOIPS connect to a call manager and Public Internet\Phone is provided in this way as well. Costs about 60k a year for a very well sustained (no double sale of bandwidth) 4mb up/dn and can serve 300 people easily. The price of this will come down as the technology for Seasteading goes up.

Internet

Phone - HF Radio using PPP with VOIP/IAX2/MELPe would be extremely cumbersome to setup, but is doable (might require bonding which makes it even crazier). MELPe is a military codec operating at 600/1200/2400 bps. With PPP/IAX2 you have very little networking overhead. The quality of MELP is hard to describe, but with carefully tweaked jitterbuffer settings, cell phone quality should be possible. The advantage is that you avoid the annoying lag. This setup would require an extremely hacked Asterisk.

Satellite Entertainment TV/Radio

Multiple dishes?

High Frequency Radio - 2-30MHz

Worldwide Coverage, very large antennas (30+ meters long, or longer?)

Troposcatter Over the horizon communications <ref>http://en.wikipedia.org/wiki/Troposcatter</ref>

Range is something like 100 to 1200 miles. Datarate to 40 Mbps. <ref>http://goliath.ecnext.com/coms2/gi_0199-5769172/RADYNE-TROPOSCATTER-MODEMS-BREAK-NEW.html</ref>

Possible 'Pirate' Radio Station(s)?

GMDSS System Global Maritime Distress Signal System, SOLAS requirement

VHF-FM Radio Marine Band 156-158 MHz SOLAS requirements to maintain a listening watch on distress frequencies

Coordinate small boat activities around SeaStead, each small boat equipped with one of these too.

Relatively small radios, low power (~25w ERP), small antennas (2 meters or less in length, max. Handhelds ~8" long)

VHF-AM Radio Aircraft Band 118-136MHz

Coordinating air traffic inbound and outbound.

Several frequencies: Departure/Approach, Tower (landing), Ground (ground movement), coordination frequencies

Air Traffic Control radar

Air Navigation aids? VOR/DME/ TACAN or rely on GPS?

Tactical Radios - Trunked 800 MHz systems? Used for:

Firefighting / EMS

Maintenance

Defense

Law Enforcement?

Need to investigate frequency propagation through structures.

Other radios - Ability to monitor/speak on military frequencies, ie

30-70 MHz FM (Military Tactical Net);

220-400 MHz AM (Military aviation band), etc?

"Company" radios for SeaStead operations, similar to business-band frequencies (VHF-FM High at 150MHz or UHF-FM at 450-470MHz and/or 800 MHz trunked system. Will probably require robust encryption.

References

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