Use VHF radio to transfer data

[[email protected]]

I want to collect data from auto (taxi) to a control office.

Most of existing Taxi have a VHF radio tranceiver. So Howcan we use
this to transfer data to the controlling site.

Regards,
Thuan Nguyen

 

[Anthony Fremont]

I want to collect data from auto (taxi) to a control office.

Most of existing Taxi have a VHF radio tranceiver. So Howcan we use
this to transfer data to the controlling site.

GPRS, GSM or SMS. Or you could mail it. ;-)

 

[Eeyore]

I want to collect data from auto (taxi) to a control office.

Most of existing Taxi have a VHF radio tranceiver. So Howcan we use
this to transfer data to the controlling site.

A typical taxi transceiver ?

Have you considered Morse Code ?

Graham

 

[Anthony Fremont]

A typical taxi transceiver ?

Have you considered Morse Code ?

Ha ha ha, it's such an obscure communications method now that the DHS would
probably think it was some kind of covert operation. ;-) I bet there's not
ten people reading this list that have passed a code test. Almost none of
them will be under 50 years old.

 

[Bob]

I want to collect data from auto (taxi) to a control office.

Most of existing Taxi have a VHF radio tranceiver. So Howcan we use
this to transfer data to the controlling site.

Regards,
Thuan Nguyen

Read the taxi firm's radio license first. They are probably only
licensed for voice transmissions.

Bob

 

[Jan Panteltje]

I want to collect data from auto (taxi) to a control office.

Most of existing Taxi have a VHF radio tranceiver. So Howcan we use
this to transfer data to the controlling site.

Say 'one' 'zero' 'one' 'one'.....

 

[mpm]

I want to collect data from auto (taxi) to a control office.
Most of existing Taxi have a VHF radio tranceiver. So Howcan we use
this to transfer data to the controlling site.

What country are you in? (License issues)
What kind, and how much data are you talking about?

There are many manufacturers of add-on encoders for two-way mobile
radios.
Including simple automatic-ID units (to know who's keyed up).
Also, there are many DTMF microphone solutions.

Let me know your requirements, and I can steer you in the right
direction.
It would also be helpful to know the radio make & model(s), including
whether or not any portables are involved.

-mpm

 

[[email protected]]

IF your license allows it, you can use various schemes that use audio
frequency shift keying, there are chipsets designed for this. google
FX/MX469 chip. Note most radio regulatory agencies get very antsy
and very interested if you send a data protocol they dont like or cant
decode, and the possible penalities for disobeying are HARSH, no
matter where in the world you are.

Steve Roberts

 

[RST Engineering \(jw\)]

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I bet there's not

 

[martin griffith]

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http://morsecode.scphillips.com/cgi-bin/morse.cgi
correct?


martin

 

[Anthony Fremont]

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C O R R E C T

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J I M

It's been a long time, but I think that's right. I'm surprised I remembered
enough to get that without cheating, but I did sound it out in my head.

 

[Michael A. Terrell]

I want to collect data from auto (taxi) to a control office.

Most of existing Taxi have a VHF radio tranceiver. So Howcan we use
this to transfer data to the controlling site.

Regards,
Thuan Nguyen

Are they still using stolen PRC-77 radios in Vietnamese taxis?


--
Service to my country? Been there, Done that, and I've got my DD214 to
prove it.
Member of DAV #85.

Michael A. Terrell
Central Florida

 

[jasen]

C O R R E C T

J I M

It's been a long time, but I think that's right. I'm surprised I remembered
enough to get that without cheating, but I did sound it out in my head.

my computer agrees... (morse from the "bsdgames" package)

Bye.
Jasen