Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
spuffock said:I need to make a device using rfPIC chips, operating in the 868-870 MHz licence exempt band. Does anyone know of pairs of crystals, in SMD packages, already available, or do I have to get them cut specially?
audioguru said:I guess there is one inside my car's keyless entry remote. The pic even has the transmitter buit-in.
Yeah, my son bought a car (hey dad, can I borrow some money to buy this good deal?) that was re-posessed from someone who didn't pay for its lease. The dealer shared the high cost of a remote key for it. I was given a DVD player from the dealer for supplying the money. :lol:Nigel Goodwin said:BTW, have you seen how much it costs to replace one of those keys if you lose it?.
spuffock said:I am sorry for assuming. Of course I've looked at the data sheet, and I had erroneously assumed that anyone replying would have done so too.
Now, given that everyone in this discussion knows what they're on about, I need a pair of crystals, which will give, when multiplied by 32, 1)a frequency in the range 868-870 MHz, and 2) a frequency separated from this by 10.7 MHz, or another common IF frequency that I can get a filter for. It seems probable that I may be able to obtain a kit, consisting of a suitable pair of crystals, an IF filter, and an 869 MHz SAW filter. If anyone knows where such may be obtained, please let me know. Thanks
spuffock said:It is hoped to be a large volume production thing, but, sworn to secrecy and all that. Patents are a load of rubbish, you just have to make so many so cheap that no-one else finds it worth the trouble
spuffock said:Buying production quantities of components to see if I can get a project to work?