Design RF circuit / product

I need a design/schematic and working prototype (or instructions to breadboard it). Essentially I need an RF receiver that works between 148-152mhz, scans for an active signal across that range, and when it picks up a signal, it will output it to a [url removed, login to view] jack so the signal can be recorded on a mobile phone. Ideally it will be powered by (possibly) a mobile phone usb port (not sure if they provide outward voltage), a small solar panel or some other small, maintainable and long-lasting power supply (with an option to have a DC power source from main power).

Now for the (potentially) tricky part - when the signal is sent to the mobile phone, the signal must be augmented with an indicator of the frequency on which it was found. The signals only last about 200-300ms so you can squeeze in before or after that. The outbound signal must be able to be interpreted by software once it is recorded.

The product size should be small enough to attach to the back of a mobile phone (velcro).

If the prototype works we would look to have a second round of design for tweaking/enhancement and then manufacturing an initial run.

Also needs to utilise a high gain antenna - preferably with a bnc connector.

Habilidades: Diseño de circuitos, Ingeniería eléctrica, Electrónica, Diseño PCB, Diseño de productos

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Información del empleador:
( 1 comentario ) Bondi, Australia

Nº del proyecto: #5400812

7 freelancers están ofertando el promedio de $811 para este trabajo


Dear Hiring Manager, This is a product, and for products because they are to be launched into the market, so special design considerations are to be taken, that's why I require much time and high price. Regards, Más

$4000 AUD en 90 días
(36 comentarios)

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$231 AUD en 3 días
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Hi. I'm Master in Electrical Engineering with 5 yrs R&D experience in RF electronics. I can assist you in this project kindly see my portgolio for more details. Thank you

$600 AUD en 1 día
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Hi. I am a professional Electronics Engineer having smart skills in PCB designing. I have 6 years of experience in field work and i have in-depth knowledge of communications. I can make this Circuits design. My bid Más

$555 AUD en 3 días
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$25 AUD en 1 día
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Hi, First of all i want to say that it is not easy to make a receiver at this frequency range on a breadboard, if good performance is [login to view URL] Frequency band you mentioned needs careful PCB design. and also goo Más

$888 AUD en 30 días
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Hi, I am Electronics Circuit Design expert, Please review my portfolio and let us know if want to review full profile. Let us know your concern into this. Dhaval

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$147 AUD en 10 días
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