The Amateur Radio hobby is moving on and one of the most rapidly expand areas is digital.
Cheap low powered processors and clever applications are fuelling experimentation and development.
The world is increasingly interconnected and technological advances are progressing at an ever
faster rate. Corporate entities are evolving ever faster and our hobby is following suit.
The WIA looks set to enable digial modes for foundation licences.
2.4 or 5.8 GHz wireless bridge to an ISP access point with unlimited, highspeed, fibre connection.
Microlink
There are many vartions to this solutions and usualy involve using a members privare or business premises to provide a link. Bear in mode that this solution simply move the commercial connection (ISP) to another location. It does introduce many other variable and potentially costs.
Issues to investigate.
Type of modems at each end
Type of antenna dishes? HB or purchased
Distance run and signal attenuation
Confirm clear path at stays that way
Locations to mount antennas and install kit.
What is the "agreement" with the owner of the node. Is it formal or informal?
Access to the node premises for service equipment
Is be compensation to be paid?
How do you protect privacy of the clubs and the node network
Licence and Legal aspects of the emissions. Does it need licensing?
see the LIPD legislation and it says Radio Local Area Network transmitters must be used indoors (Frequency hopping, WiFi and RLAN transmitters note 61 and 62).”
Carrier-grade NAT (CGN), also known as large-scale NAT (LSN), is an approach to IPv4 network design in which end sites, in particular residential networks, are configured with private network addresses that are translated to public IPv4 addresses by middlebox network address translator devices embedded in the network.
Consumer Grade NAT (CGN) or Large Scale NAT (LSN)
We are left with a number of applications (and application types) that currently break when Large Scale NAT is introduced.
What isn’t broken by NAT444/LSN:
Web browsing
Email
FTP download
Small files
BitTorrent and Limewire
Leeching (download)
Skype video and voice calls
Instant messaging
Facebook and Twitter chat
What NAT444/LSN breaks:
FTP download
Large files
BitTorrent and Limewire
Seeding (upload)
On-line gaming
Xbox
PlayStation Etc.
Video streaming
Hulu
Netflix
Slingcatcher Etc.
Webcam
Remote viewing
Tunneling
6to4
Teredo Etc.
VPN & Encryption
IPSec
SSL
VoIP
Limited ALG/SIP support
All custom applications with the IP embedded. Lack of ALGs
Ubiquiti Rocket M5 5GHz airMAX BaseStation MIMO 802.11n WiFi Access Point. airMAX® BaseStation. Rocket M is a rugged, hi-power, very linear 2x2 MIMO radio with enhanced receiver performance. Rocket M combines the “brains” in one robust unit; it can be paired with your choice of AirMax BaseStation or Rocket Antennas.
MIMO Antennas
Multiple–Input Multiple-Output (MIMO) antennas have two or more antennas in a single physical package and are designed for use in IEEE 802.11n WiFi networks. By utilizing multiple antennas, data throughput and range are increased compared to a single antenna using the same radio transmit power. Additionally MIMO antennas improve link reliability and experience less fading than a single antenna system. By transmitting multiple data streams at the same time, wireless capacity is increased.
MIMO technology uses Multipath (when wireless signals “bounce” off of objects and arrive at the receiver at different times) to improve wireless performance. MIMO technology takes a single data stream and breaks it down into several separate data streams and sends it out over multiple antennas. This provides redundancy. The receiving MIMO antenna will “look” at each stream being sent to determine the strongest one to choose.