Data over CB radio

[bobi]

First of all I don't know much about CB Radio interfacing.

Is there a data channel for CB's. Lets say for a Motorola GM3xx series.

For example can I have 2 Motorolas sending data bits across from one PC to
another PC serial ports or what
ever interfacing method is done.

I know that there are radio modems and stuff like that. I want to know
specifically for Motorolas at CB radio range.

So when not talking over a channel openning a channel automatically to base
sending data and then closing the channel.

 

[Rod Speed]

First of all I don't know much about CB Radio interfacing.

Is there a data channel for CB's. Lets say for a Motorola GM3xx series.
Nope.

For example can I have 2 Motorolas sending data
bits across from one PC to another PC serial ports
Yes.

or what ever interfacing method is done.

Thats the usual way.

I know that there are radio modems and stuff like that.
I want to know specifically for Motorolas at CB radio range.

It isnt specific to those.

So when not talking over a channel openning a channel
automatically to base sending data and then closing the channel.

Completely routine, tho not legal.

 

[Rod Out back]

Thats the usual way.


It isnt specific to those.


Completely routine, tho not legal.

Not that this is strictly data transmission, but...

Rod, as far as the illegal side of it, are we talking CB as in AM CB, or CB
as in UHF CB(or is it the same for both)??

I thought the Electraphone TX4600(cant remember exactly) series UHF CB radio
units allow you to send commands across UHF channels to control pumps etc.
From what I saw, it was capable of multiple commands being sent &
acknowledged from the sets. I looked at a pair for controlling a solar
pump(5kms), but was put off by the cost\benefit. Approx $1000 each end, once
you installed radio, solar panel & battery, control relays, pressure sensors
& housing for the lot. At the time there were easier ways to solve it.
It will get cheaper as they get more common, I expect.

I didnt investigate how they interface the radio, but I doubt it was much
more than simple commands. I also didnt think to actually ask if the setup
was legal. I assumed it was.

Cheers,

Rod...... Out Back

 

[John Henderson]

First of all I don't know much about CB Radio interfacing.

Is there a data channel for CB's. Lets say for a Motorola GM3xx
series.

For example can I have 2 Motorolas sending data bits across
from one PC to another PC serial ports or what ever interfacing
method is done.

I know that there are radio modems and stuff like that. I want
to know specifically for Motorolas at CB radio range.

So when not talking over a channel openning a channel
automatically to base sending data and then closing the
channel.

I'm a complete novice when it comes to CB. But when I looked
into it recently, I found references to channels 22 and 23 now
being reserved for data. See http://www.acbro.org/ for further
details. But maybe I've misunderstood things (a little knowledge
being dangerous, and all that).

There's an aus.radio.cb newsgroup.

John

 

[Rod Speed]

Not that this is strictly data transmission, but...

Rod, as far as the illegal side of it, are we talking CB as in
AM CB, or CB as in UHF CB(or is it the same for both)??

Same for both.

There are however other bands where data is legal without a license.

I thought the Electraphone TX4600(cant remember exactly) series
UHF CB radio units allow you to send commands across UHF channels
to control pumps etc. From what I saw, it was capable of multiple
commands being sent & acknowledged from the sets. I looked at
a pair for controlling a solar pump(5kms), but was put off by the
cost\benefit. Approx $1000 each end, once you installed radio, solar
panel & battery, control relays, pressure sensors & housing for the lot.

Yeah, quite a bit of that sort of thing in use.

At the time there were easier ways to solve it.
It will get cheaper as they get more common, I expect.
Yep.

I didnt investigate how they interface the radio, but
I doubt it was much more than simple commands.

There's quite a few ways of doing it, including full
packet TNCs that basically allow full error correcting
protocols and anything you like commands wise.

I also didnt think to actually ask if the setup was legal. I assumed it was.

Yeah, its legal as long as the correct bands
are used and the power levels are legal.

Model radio control is another example of something similar.