Pic + RF Module or RFPIC

[Ioannis]

As long as you are on the same frequency and usin the same modulation (ASK, FSK, FM etc) you are OK to use whatever you want.

Keep in mind that RF is not a piece of cake. You have to make tuning circuits, adjustments, have Spectrum analyzers to check for harmonics etc.

Using a ready made module all these are done for you and as a plus you get the certification. Can you get a certification for your product? I can assure you that it is very costly.

Talk to Bruce, he may find you a good solution from all aspects.

Ioannis

[koossa]

Thank you Ioannis, now I understand better.

[dhouston]

Using a ready made module all these are done for you and as a plus you get the certification. Can you get a certification for your product? I can assure you that it is very costly.

If this is for N. America, the units Bruce sells are not pre-certified (unless FCC regs have changed recently). Depending on the design details (e.g. superhet or suprerregen receiver), testing of the complete circuitry (including antennas), must be done in FCC approved labs. This can run to several thousands of dollars for both transmitter and receiver so initial cost of the components is of minor importance unless your market is for millions of units. If your market is large, you can buy similar transmitters and receivers from China for about $1 each. And you can get custom features for even modest sized quantities without raising the cost that much.

If your market is of modest size, there is an FCC exception for home-built devices and units like those Bruce sells lend themselves to DIY designs (and are also likely to be an advantage where certification testing is required). But the definition of home-built is an imprecise gray area - even supplying a schematic can disqualify a design in some cases. You really need to know the regulations in your country before jumping in. In the USA, see the FCC Part 15 regulations.