High-speed multimedia radio (HSMM), colloquially referred to as the hinternet, is the implementation of wireless data networks over amateur radio frequencies using commercial off-the-shelf (COTS) hardware such as 802.11 access points and D-Star equipment. Licensed amateur radio operators may use amplifiers and specialized antennas to increase the power and coverage of the 802.11 signal.
The name hinternet comes from a combination of the words ham and Internet and can be used to refer to any high speed data network over amateur radio, not just 802.11 networks.
more info on:
http://en.wikipedia.org/wiki/High-sp...ltimedia_radio
Because the meaning and nature of amateur transmissions may not under ANY circumstances be obscured, security measures that are implemented must be diabled. Is there some way to enable/disable the WEP encryption under linux ?
As with any amateur radio mode stations must identify at least once every 10 minutes. One acceptable method for doing so is to transmit one’s call sign inside an ICMP echo request (commonly known as a ping). If the access point is set to "master" then the user’s call sign may be set as the "SSID" and therefore will be transmitted at regular intervals.
It is also possible to use a DDNS "push" request to automatically send an amateur callsign in plain text (ASCII) every 10 minutes. This requires that a computers hostname be set to the callsign of the amateur operator and that the DHCP servers lease time be set to less than or equal to 10 minutes. With this method implemented the computer will send a DNS "push" request that includes the local computers hostname every time the DHCP lease is renewed. This method is supported by all modern operating systems including but not limited to Windows, Mac OS X, BSD, and Linux. A optional method is that the RF output are keyed to generate the callsign in morse code. In morse code ( CW ) a carrier wave is keyed on and off to represent the dots and dashes of the code elements. The carrier's amplitude and frequency remains constant during each code element.
Is it possible to lock the wlan card to the specific band, and WLAN frequency for radioamateur work?
Is it possible to include the stations location in the transmission?
We hams use the Maidenhead locator system, this can be set as gps cordinates or perhaps fetced from a GPS receiver:
http://en.wikipedia.org/wiki/Maidenhead_Locator_System
maximum legal output in Norway is 100W of RF measured at the transmitter output.
There are NO LIMITS on ERP power!
http://en.wikipedia.org/wiki/Effective_radiated_power
some modes that can possibly be used for long distance wlan is:
moonbounce:
http://en.wikipedia.org/wiki/EME_%28communications%29
meteor scatter
http://en.wikipedia.org/wiki/Meteor_scatter
tropospheric scatter:
http://en.wikipedia.org/wiki/Tropospheric_scatter
Atmospheric ducting
http://en.wikipedia.org/wiki/Atmospheric_duct
Tropospheric ducting
http://en.wikipedia.org/wiki/Tropospheric_ducting
high gain antennas and enough ERP is needed for this.
The frequency allocations for IARU (hamradio use ), region 1 europe is:
2.4 GHz (802.11b/g/n)
2.3 GHz (13cm)
Necessary
IARU Recommendation Bandwidth
2,310.000-2,320.000 MHz 2,310.000-2,310.500 MHz Repeater links
Sub-regional 200 kHz 2,310.100 MHz Packet radio
(National band plans) 200 kHz 2,310.300 MHz Packet radio
2,310.000-2,310.500 MHz *Remote control
2,311.000-2,315.000 MHz High speed data
2,320.000-2,320.150 2,320.000-2,320.025 MHz Moonbounce
CW exclusive
2,320.150-2,320.800 2,320.200 MHz SSB centre of activity
CW and SSB
2,320.750-2,320.800 MHz Local Beacons, 10W erp max
2,320.800-2,321.000 2,320.800-2,320.990 MHz Propagation Beacons only
Beacons exclusive
2,321.000-2,322.000
Simplex and repeaters
(Note 1)
2,322.000-2,400.000 2,322.000-2,355.000 MHz ATV and ATV repeaters
2,355.100-2,364.000 MHz Repeater links
200 kHz 2,355.100 MHz Packet radio
200 kHz 2,355.300 MHz Packet radio
2,356.000-2,360.000 MHz *High speed data
1,000 kHz 2,364.000 MHz *Packet radio
2,365.000-2,370.000 MHz Repeaters
2,370.000-2,390.000 MHz ATV and ATV repeaters
2,390.000-2,392.000 MHz Moonbounce
2,400.000-2,450.000 2,435.000 MHz ATV repeater outputs
Satellites 2,440.000 MHz ATV repeater outputs
Note 1: Stations in countries which do not have access to the all modes section 2,322-2,390 MHz, use the simplex and repeater
segment 2,320-2,322 MHz for data transmission.
Note 2: Stations in countries that do not have access to the narrow band segment 2,320-2,322 MHz, use the alternative narrow
band segment 2,304-2,306 MHz and 2,308-2,310 MHz.
Note 3: The segment 2,433-2,443 MHz may be used for ATV if no satellite is using the segment.
LICENCE NOTES: Amateur Service - Secondary User: Users must accept interference from ISM users.
Amateur Satellite Service: 2,400-2,450 MHz - Secondary User: Users must accept interference from ISM users
ISM = Industrial, scientific and medical.
3.6 GHz (802.11y)
3.4 GHz (9cm)
IARU Recommendation
3,400.000-3,402.000 MHz 3,400.100 MHz Centre of activity (Note 1)
Narrow band
CW/EME/SSB 3,400.750-3,400.800 MHz Local Beacons, 10W erp max
3,400.800-3,400.995 3,400.800-3,400.995 MHz Propagation Beacons only
Propagation Beacons
3,401.000-3,402.000 MHz Remote control
3,402.000-3,410.000
All modes (Notes 2, 3)
3,410.000-3,475.000
All modes (Note 4) 3,456.000 MHz (Note 1)
Note 1: EME has migrated from 3456 MHz to 3400 MHz promote harmonised usage and activity
Note 2: Stations in many European countries have access to 3400-3410 MHz as permitted by ECA Table Footnote EU17
Note 3: Amateur Satellite downlinks planned
Note 4: Parts of this range are subject to regulatory change. Contact the Microwave Manager for further information
LICENCE NOTES: Amateur Service - Secondary User.
ISM = Industrial, scientific and medical
Notes to the Band Plan
ITU-R Recommendation SM.328 (extract)
Necessary bandwidth: For a given class of emission, the width of the frequency band which is just sufficient to
ensure the transmission of information at the rate and with the quality required under specified conditions.
The use of Amplitude Modulation (AM) is acceptable in the all modes segments but users are asked to consider
adjacent channel activity when selecting operating frequencies.
Foundation and Intermediate Licence holders are advised to check their licences for the permitted power limits and
conditions applicable to their class of licence.
5 GHz (802.11a/h/j/n)
5.7 GHz (6cm)
IARU Recommendation
5,650.000-5,668.000 MHz
Satellite uplinks
5,650.000-5,670.000
Narrow band 5,668.8 MHz Beacons
CW/EME/SSB
5,670.000-5,680.000
All modes
5.755.000-5,760.000
All modes
5,760.000-5,762.000
Narrow band 5,760.100 MHz
CW/EME/SSB 5,760.750-5,760.800 MHz
5760.800-5760.995 5,760.800-5,760.995 MHz Propagation Beacons only
Propagation Beacons
5,762.000-5,765.000
All modes
5,820.000-5,830.000
All modes
5,830.000-5,850.000
Satellite downlinks
some interesting links and facts:
A distance of 304km (189 miles), was achieved using Ubiquiti’s XtremeRange5 High-Power mini-PCI radio and 35dBi 5 GHz parabolic dish antennas.
The link extends from Sardinia to Central Italy achieving data-rates of about 5Mbps. The Italian Center for Radio Activities (C.I.S.A.R), an association founded by a group of Italian radio amateur operators, oversaw the project.
http://www.dailywireless.org/2007/08...stance-record/
Modifying Consumer Off the Shelf Wireless LAN devices for specialized amateur use
http://www.qsl.net/kb9mwr/projects/wireless/modify.html
The name hinternet comes from a combination of the words ham and Internet and can be used to refer to any high speed data network over amateur radio, not just 802.11 networks.
more info on:
http://en.wikipedia.org/wiki/High-sp...ltimedia_radio
Because the meaning and nature of amateur transmissions may not under ANY circumstances be obscured, security measures that are implemented must be diabled. Is there some way to enable/disable the WEP encryption under linux ?
As with any amateur radio mode stations must identify at least once every 10 minutes. One acceptable method for doing so is to transmit one’s call sign inside an ICMP echo request (commonly known as a ping). If the access point is set to "master" then the user’s call sign may be set as the "SSID" and therefore will be transmitted at regular intervals.
It is also possible to use a DDNS "push" request to automatically send an amateur callsign in plain text (ASCII) every 10 minutes. This requires that a computers hostname be set to the callsign of the amateur operator and that the DHCP servers lease time be set to less than or equal to 10 minutes. With this method implemented the computer will send a DNS "push" request that includes the local computers hostname every time the DHCP lease is renewed. This method is supported by all modern operating systems including but not limited to Windows, Mac OS X, BSD, and Linux. A optional method is that the RF output are keyed to generate the callsign in morse code. In morse code ( CW ) a carrier wave is keyed on and off to represent the dots and dashes of the code elements. The carrier's amplitude and frequency remains constant during each code element.
Is it possible to lock the wlan card to the specific band, and WLAN frequency for radioamateur work?
Is it possible to include the stations location in the transmission?
We hams use the Maidenhead locator system, this can be set as gps cordinates or perhaps fetced from a GPS receiver:
http://en.wikipedia.org/wiki/Maidenhead_Locator_System
maximum legal output in Norway is 100W of RF measured at the transmitter output.
There are NO LIMITS on ERP power!
http://en.wikipedia.org/wiki/Effective_radiated_power
some modes that can possibly be used for long distance wlan is:
moonbounce:
http://en.wikipedia.org/wiki/EME_%28communications%29
meteor scatter
http://en.wikipedia.org/wiki/Meteor_scatter
tropospheric scatter:
http://en.wikipedia.org/wiki/Tropospheric_scatter
Atmospheric ducting
http://en.wikipedia.org/wiki/Atmospheric_duct
Tropospheric ducting
http://en.wikipedia.org/wiki/Tropospheric_ducting
high gain antennas and enough ERP is needed for this.
The frequency allocations for IARU (hamradio use ), region 1 europe is:
2.4 GHz (802.11b/g/n)
2.3 GHz (13cm)
Necessary
IARU Recommendation Bandwidth
2,310.000-2,320.000 MHz 2,310.000-2,310.500 MHz Repeater links
Sub-regional 200 kHz 2,310.100 MHz Packet radio
(National band plans) 200 kHz 2,310.300 MHz Packet radio
2,310.000-2,310.500 MHz *Remote control
2,311.000-2,315.000 MHz High speed data
2,320.000-2,320.150 2,320.000-2,320.025 MHz Moonbounce
CW exclusive
2,320.150-2,320.800 2,320.200 MHz SSB centre of activity
CW and SSB
2,320.750-2,320.800 MHz Local Beacons, 10W erp max
2,320.800-2,321.000 2,320.800-2,320.990 MHz Propagation Beacons only
Beacons exclusive
2,321.000-2,322.000
Simplex and repeaters
(Note 1)
2,322.000-2,400.000 2,322.000-2,355.000 MHz ATV and ATV repeaters
2,355.100-2,364.000 MHz Repeater links
200 kHz 2,355.100 MHz Packet radio
200 kHz 2,355.300 MHz Packet radio
2,356.000-2,360.000 MHz *High speed data
1,000 kHz 2,364.000 MHz *Packet radio
2,365.000-2,370.000 MHz Repeaters
2,370.000-2,390.000 MHz ATV and ATV repeaters
2,390.000-2,392.000 MHz Moonbounce
2,400.000-2,450.000 2,435.000 MHz ATV repeater outputs
Satellites 2,440.000 MHz ATV repeater outputs
Note 1: Stations in countries which do not have access to the all modes section 2,322-2,390 MHz, use the simplex and repeater
segment 2,320-2,322 MHz for data transmission.
Note 2: Stations in countries that do not have access to the narrow band segment 2,320-2,322 MHz, use the alternative narrow
band segment 2,304-2,306 MHz and 2,308-2,310 MHz.
Note 3: The segment 2,433-2,443 MHz may be used for ATV if no satellite is using the segment.
LICENCE NOTES: Amateur Service - Secondary User: Users must accept interference from ISM users.
Amateur Satellite Service: 2,400-2,450 MHz - Secondary User: Users must accept interference from ISM users
ISM = Industrial, scientific and medical.
3.6 GHz (802.11y)
3.4 GHz (9cm)
IARU Recommendation
3,400.000-3,402.000 MHz 3,400.100 MHz Centre of activity (Note 1)
Narrow band
CW/EME/SSB 3,400.750-3,400.800 MHz Local Beacons, 10W erp max
3,400.800-3,400.995 3,400.800-3,400.995 MHz Propagation Beacons only
Propagation Beacons
3,401.000-3,402.000 MHz Remote control
3,402.000-3,410.000
All modes (Notes 2, 3)
3,410.000-3,475.000
All modes (Note 4) 3,456.000 MHz (Note 1)
Note 1: EME has migrated from 3456 MHz to 3400 MHz promote harmonised usage and activity
Note 2: Stations in many European countries have access to 3400-3410 MHz as permitted by ECA Table Footnote EU17
Note 3: Amateur Satellite downlinks planned
Note 4: Parts of this range are subject to regulatory change. Contact the Microwave Manager for further information
LICENCE NOTES: Amateur Service - Secondary User.
ISM = Industrial, scientific and medical
Notes to the Band Plan
ITU-R Recommendation SM.328 (extract)
Necessary bandwidth: For a given class of emission, the width of the frequency band which is just sufficient to
ensure the transmission of information at the rate and with the quality required under specified conditions.
The use of Amplitude Modulation (AM) is acceptable in the all modes segments but users are asked to consider
adjacent channel activity when selecting operating frequencies.
Foundation and Intermediate Licence holders are advised to check their licences for the permitted power limits and
conditions applicable to their class of licence.
5 GHz (802.11a/h/j/n)
5.7 GHz (6cm)
IARU Recommendation
5,650.000-5,668.000 MHz
Satellite uplinks
5,650.000-5,670.000
Narrow band 5,668.8 MHz Beacons
CW/EME/SSB
5,670.000-5,680.000
All modes
5.755.000-5,760.000
All modes
5,760.000-5,762.000
Narrow band 5,760.100 MHz
CW/EME/SSB 5,760.750-5,760.800 MHz
5760.800-5760.995 5,760.800-5,760.995 MHz Propagation Beacons only
Propagation Beacons
5,762.000-5,765.000
All modes
5,820.000-5,830.000
All modes
5,830.000-5,850.000
Satellite downlinks
some interesting links and facts:
A distance of 304km (189 miles), was achieved using Ubiquiti’s XtremeRange5 High-Power mini-PCI radio and 35dBi 5 GHz parabolic dish antennas.
The link extends from Sardinia to Central Italy achieving data-rates of about 5Mbps. The Italian Center for Radio Activities (C.I.S.A.R), an association founded by a group of Italian radio amateur operators, oversaw the project.
http://www.dailywireless.org/2007/08...stance-record/
Modifying Consumer Off the Shelf Wireless LAN devices for specialized amateur use
http://www.qsl.net/kb9mwr/projects/wireless/modify.html