walkie talkie design

Hi good day very high skill in RF, Working in RF150 and RF433, have modules in RF150 analog transmision or digital RF433 , LORA (long range) more of 5km Have a PCB kits included RF150 and RF433 if you need test . Senior ENGINEER has more of 40 years’ experience in this profession, developing Hardware and Software Expertise in video processing and associated simulation and evaluation tools and methods, communication I2C, I2S, SATA, RS232, RS422, RS485, USB, TCP, Bluetooth, RF433, Wi-fi, GSM, GPS, GPRS and any other serial communication. Producing Analog/Digital board designs, layouts and modifications or any other multi-layer PCB design, Verifying designs and layouts. See Portfolio for samples of works. Preparing documentation for manufacturing. Gerber, Bom, 3D model Contact with partner in China for make PCB in 32 layers Design in Any CAD, Allegro, Altium, Orcad, Eagle, and other. Developing board layout including 3D model, size, performance, power consumption, and cost. Developing software for any microcontroller or microprocesor in C, C++, Basic, Assembler, compiler Keil, IAR, and other.

Do you want a duplex or half duplex? What is the communication distance? and why don't you want to buy ready-made radio stations?

Hello, I have years of experience in designing electrical circuits and digital communication. I can provide you circuit, schematic and layout. Also you can check my portfolio. I'm looking forward to hearing from you.

Hi, I am Vineesh Mohan, from India and we are doing similar projects. I am interested in your project and would like to know more about it. I can provide you the solution using 1) AMBE-codec chip, which is commonly used in all walkie talkie module. 2) DMR modules. (which is cost effective) . The selected codec IC determines whether your walkie talkie can communicate with other walkie talkie or not. If you are not interested in codec IC , we can provide you certain codec algorithms . If you can provide the following data , we can provide you the best solution . 1) Permissible band width. 2) Number of channels needed. 3) Coverage area. 4) Permissible radiated power. 5) Communications per channel. 6) Data security 8) Any other functionalities 9) One way communication or two way communication For providing a prototype I assume minimum 60 working days are needed. And time frame is given as follows. 1) schematics - 1 week , include study of all your facilities needed 2) layout - 1 week, include BOM preparation and related works 3) prototype assembly - 1 to 2 months. include PCB design, PCB fabrication, component purchase, assembling, testing , error correction and verification. Now we are in design of a similar project . So we can help you more in this project. So I would like to discuss you more regarding the project and waiting to hear from you soon. Thank you

I have worked on same type of protocol in which single analog data will be transmitted by dividing the signal at multiple phase of the signal which will be digitized by using 1 of the micro controller at the receiver side again it will be converted to analog before heard.

Dear Sir/Madam, I would like to introduce myself in the world of electronics. I have completed my masters from France and have started now my firm at my homeland called kolhapur (India) where we offer services in Data monitoring, Data acquisition, controlling of devices and sensor systems. We offer customized solutions for industries, currently Working and prototyping on various industry based applications to meet the specific requirements. Open source microcontrollers have been used like arduino and Raspberry pi etc, for these projects. We are team of 5 engineers, and working full time. We are highly professional and with great technical skills Offering solutions that one is in search. Any Industrial, home or Individuals requirements of electronics application will be fulfilled by our experts. We believe in offering excellent products, best quality of service, 100% reliability and work that makes this world a better place to live. Thanks and Regards Raviraj Phule (MS E&TC) Mob - +91 9975872811 Kolhapur India