FRS radio design with DTMF

The goal is to send/receive DTMF tones and voice based on FRS radio standard.

Desired operation:

By pressing the PPT switch and once the radio channel is open and the communication is established in both units (sender/receiver), the sender unit should be able to transmit, the voice or DTMF tones and the receiver unit should output the analog signal (voice) or decode the DTMF tones and write the digital signals as output. (4 leds)

Evner: Elektrisk Ingeniørarbejde, Elektronik, Microcontroller, PCB Layout, Trådløs

Se mere: write with voice, electronics & communication engineering, electronics and communication, channel communication, electrical design write, write electrical engineering, switch engineering, sender receiver, channel design, channel analog output, voice output, radio units, digital signal, radio voice, ppt write, electronics communication, switch design, electrical engineering standard, Radio design, dtmf tones, ppt voice, Leds, dtmf signals, design ppt, decode digital communication

Om arbejdsgiveren:
( 1 bedømmelse ) Rawalpinidi, Pakistan

Projekt ID: #6038793

6 freelancere byder i gennemsnit $640 på dette job


I can complete this project and send you a prototype FAST. I can modify existing FRS radio to transmit DTMF by adding a microcontroller, DTMF generator chip and of course the required firmware.

$555 USD in 3 dage
(2 bedømmelser)

Hello, Let me introduce myself I am yasir amir khan. I am electrical engineer, running an online consultancy business, with several years of project related experience. Please check out my profile. and search my name o Flere

$888 USD in 15 dage
(9 bedømmelser)

Bir öneri henüz sağlanmadı

$833 USD in 15 dage
(7 bedømmelser)

i have worked on this before i can help you with this. i did this using a walki talki please contact me for more details

$300 USD in 15 dage
(1 bedømmelse)

I have PhD in technical sciences and I am Assistant Professor in the field of Telecommunications Engineering.

$1111 USD in 3 dage
(0 bedømmelser)

I am offering my services for this project. In case I'm selected, do you need breadboard demonstrations or possibly some PCBs or some PCBs packaged in it.

$250 USD in 20 dage
(0 bedømmelser)

By using mcu such as pic18f87, you can send/receive dtmf as you expected. What's more, by using mcu you can change the function of this device later as you need any time, such as extend the led from 4 to 12. Is that in Flere

$200 USD in 21 dage
(0 bedømmelser)