PIC Program advice needed , 2way radio

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I am wanting to program a 2way radio with microcontroller?

How would it be done? jw the code, dont want it spoonfed to me
either..Thats no fun.

just some basic info needed to create a 2way radio(walkie talkie)type
please.

Thanks

 

[Tim Shoppa]

I am wanting to program a 2way radio with microcontroller?

Well, that's pretty vague. A typical walkie-talkie has a user
interface (buttons, display, PTT switch, some knobs) and functional
blocks (synthesizer, IF, RF, AF, modulator, detector, battery charge).
In a modern radio the microcontroller sits in the middle between user
interface and the blocks, translating settings to commands and levels
applied to the functional blocks. In many cases the user interface and
functional blocks talk by a serial bus (look at any synthesizer IC from
the past decade), in other cases it's discrete digital or analog
signals that are exchanged.

Tim.

 

[Richard]

mmmm....Do you mean program the radio as the same way you program the
frequencies, tones and other settings of the radio from a PC?

If so then this will be a nice challange as each make of radio
(Kenwood, Icom, Motorola etc) uses different protocols. Some use a
straight RS232 signal others need a level converter like a max232.

Then sometimes even different radios from the same manufacturer is
different programming wise.

In essence you will need to find the port settings etc and then start
sniffing the data to find out what to send and what you can expect to
receive from the radio.

I know at work we got literly dozens of different software packages
just for a few of the common main stream radios. Some work only in
dos, others Windows and dos and some like the kenwood TKR750 only in
windows.