So what's the regs to do with amateur radio ops then?

Sly · 08-02-2002

Ok, in the UK there seems to be endless red-tape when you get onto this subject. Does anyone know if the following proposal is legal?

Say we have two hotspots, running <=100mw limit ERP, serving joe-non-amateur net access or something. Then, want to link them together (over longish distance). Plan would be to have a point-to-point link, on channel 1, using high gain aerials, under the amateur license (assuming a licensed amateur owns the station at each end that is). Then bridge over those, so non-amateurs at each end can communicate.

Right, anyone know if this is ok? Would you have to TX your call every 15mins?

Thanx

Si

Haveck · 08-03-2002

you'd have to tx yeah, now that you mention it i hadn't thought about that, but that is fcc regs..
i don't know the max power allowed on the band either, but i'm sure it's at least 1watt or so.. might be around 15, i know i've seen legit amps that large set to operate on the 2.4g for hams.. but the power allowed might vary given the station's operator's lisence level, so you might need to be and "expert" amature to use that much power

Sly · 08-03-2002

The UK regs for 2.4 - 2.45GHz is a secondary allocation, with power limit 26dbw (400W). Pretty sure you would have fried pigeons with that tho! Not sure about other countries.

Have a looke at http://www.rsgb.org/bandplans/cd1917.htm

Realistically, I've seen some 1W amps, ~ $500 I believe. But anyway, the power isn't the main concern, more the fact that you could run 100mW into a 23dbi gain dish, and use it for a dedicated link between amateurs (locked into the lower 802.11b channels). If my maths serves me right, I believe that would end up at erp ~ 8W (with loss for few meters of cable.. i think!)

Buuut, surely that would be considered unattended operation too? Eww ick, implying sending call by morse/voice? Wonder if sending a broadcast packet to 192.168.0.255 would do :-)

asylist · 08-04-2002

no can do. I previously looked into using amatuer 2M packet for wireless net access, and the gotcha is not being able to send any type of encryption or business material over the amatuer link. everything has to be sent plaintext

lazerman · 08-29-2002

Ok folks, here we go...
I'm an amateur radio operator and have been for about 12years.
Regs for sending data across 'encrypted' is illeagle, but 'data compression' is not (same thing) as long as it's public key
(wich I believe 802.11b IS).
Second, sending non-ham info across MIGHT be legal as long
as the whole thing is non commercial (no charge).
As for broadcast/id I have no idea but I like the broadcast to
the 255 ip idea.

Power for 802.11b btw in the USA for point to point is 4watts ERP
That's 400mw into 20db with no feedline loss.
Point to multi-point is another matter. It seems to be that
directional stations on the spokes of the wheel pointing back
to the base can run up to 4wERP but the omni station may
only run 1watt ERP (100mw at the antenna into 10db).

I'm about to get into putting together some various antennas
for point to point, direction finding and high gain omni for
base and mobile. I have some design ideas and a lot of info
from some people very into Amateur Television on 2.3Ghz.
(one has a 33element loop yagi that will work on 2.4G!)

I know there's hams out here with their fingers into WiFi,
How about sending me some private e-mail to talk tech?

08-02-2002	#1 (permalink)
Sly Registered Member Join Date: Aug 2002 Location: Soton, UK Posts: 5	So what's the regs to do with amateur radio ops then? Ok, in the UK there seems to be endless red-tape when you get onto this subject. Does anyone know if the following proposal is legal? Say we have two hotspots, running <=100mw limit ERP, serving joe-non-amateur net access or something. Then, want to link them together (over longish distance). Plan would be to have a point-to-point link, on channel 1, using high gain aerials, under the amateur license (assuming a licensed amateur owns the station at each end that is). Then bridge over those, so non-amateurs at each end can communicate. Right, anyone know if this is ok? Would you have to TX your call every 15mins? Thanx Si

08-03-2002	#3 (permalink)
Sly Registered Member Join Date: Aug 2002 Location: Soton, UK Posts: 5	(cough) 400W (cough) The UK regs for 2.4 - 2.45GHz is a secondary allocation, with power limit 26dbw (400W). Pretty sure you would have fried pigeons with that tho! Not sure about other countries. Have a looke at http://www.rsgb.org/bandplans/cd1917.htm Realistically, I've seen some 1W amps, ~ $500 I believe. But anyway, the power isn't the main concern, more the fact that you could run 100mW into a 23dbi gain dish, and use it for a dedicated link between amateurs (locked into the lower 802.11b channels). If my maths serves me right, I believe that would end up at erp ~ 8W (with loss for few meters of cable.. i think!) Buuut, surely that would be considered unattended operation too? Eww ick, implying sending call by morse/voice? Wonder if sending a broadcast packet to 192.168.0.255 would do :-)

08-29-2002	#5 (permalink)
lazerman Registered Member Join Date: Aug 2002 Location: In my car Posts: 2	ham/fcc/802.11b Ok folks, here we go... I'm an amateur radio operator and have been for about 12years. Regs for sending data across 'encrypted' is illeagle, but 'data compression' is not (same thing) as long as it's public key (wich I believe 802.11b IS). Second, sending non-ham info across MIGHT be legal as long as the whole thing is non commercial (no charge). As for broadcast/id I have no idea but I like the broadcast to the 255 ip idea. Power for 802.11b btw in the USA for point to point is 4watts ERP That's 400mw into 20db with no feedline loss. Point to multi-point is another matter. It seems to be that directional stations on the spokes of the wheel pointing back to the base can run up to 4wERP but the omni station may only run 1watt ERP (100mw at the antenna into 10db). I'm about to get into putting together some various antennas for point to point, direction finding and high gain omni for base and mobile. I have some design ideas and a lot of info from some people very into Amateur Television on 2.3Ghz. (one has a 33element loop yagi that will work on 2.4G!) I know there's hams out here with their fingers into WiFi, How about sending me some private e-mail to talk tech?

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

08-03-2002	#2 (permalink)
Haveck The Antennal Megalomaniac Join Date: Jul 2002 Location: Penn State Posts: 18	you'd have to tx yeah, now that you mention it i hadn't thought about that, but that is fcc regs.. i don't know the max power allowed on the band either, but i'm sure it's at least 1watt or so.. might be around 15, i know i've seen legit amps that large set to operate on the 2.4g for hams.. but the power allowed might vary given the station's operator's lisence level, so you might need to be and "expert" amature to use that much power

08-04-2002	#4 (permalink)
asylist Registered Member Join Date: Jul 2002 Location: howell, michigan Posts: 9	no can do. I previously looked into using amatuer 2M packet for wireless net access, and the gotcha is not being able to send any type of encryption or business material over the amatuer link. everything has to be sent plaintext