[meloen]

I'm considering buying a NRF905 transceiver? Spending $8 on a 433+868+915 (Zwave) device looks quite good to me. Alternative might be the PTR8500, the NRF9E5 should have a built in LPF function according the data sheet.

The main difference with the superheterodyne seems to be the modulation mode (FSK/GMSK), but I'm not sure what the impact is. Can someone tell me what the exact impact is and if this device works with "basic" 433Mhz devices like kaku and impuls?

[thex]

FSK = frequency shift keying but most cheap systems work with ASK = amplitude shift keying so it will not work with these devices. In general FSK is much better but the manufacturers use ASK because it is cheaper/simpler on the hardware side

[meloen]

Thanks, so the 433Mhz part is not interesting as a replacement for the superheterodyne sender/receiver. If I connect this, does it only need new protocols or also a new HW_Type?

[curlymo]

Depends. If you are just going to connect a new 433 device, then you need nothing new. Just a new hardware plugin for pilight.