Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

Question on sending/receiving DTMF over RF modules

Status
Not open for further replies.
G

ggmssr

Member level 2
Joined
Oct 25, 2011
Messages
48
Helped
1
Reputation
2
Reaction score
1
Trophy points
1,288
Activity points
1,586
I have one question about sending receiving DTMF over RF modules?

DTMF must be send over FM modules ?
 

Re: DTMF over RF modules

what is your complexity write in detail............dtmf or any data less than carrier frequncy can be send easily
 

Re: DTMF over RF modules

just DTMF signal, must use FM module or can be transfered over ASK-FSK ?
 

Re: DTMF over RF modules

question in my post #3
 

Re: DTMF over RF modules

You need an analog modulation method to transmit DTMF, e.g. AM or FM. Digital RF modules can't.

It would be easy to transmit the tiny information content of DTMF signals in digital form, e.g. using a popular remote control encoder.
 
  • Like
Reactions: ggmssr

    G

    ggmssr

    Points: 2
    Helpful Answer Positive Rating
Re: DTMF over RF modules

Thanks FvM I just needed confirmation, thanks again. I'm new in RF area, but I catch lots of things for short time.
 

Re: DTMF over RF modules

You can use MAX2606 as FM TX, see datasheet for additional info:

MAX2606 FM Trasmitter.jpgFigure_01.gif
 

Status
Not open for further replies.

Similar threads

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top