Problem with manchester code for RF

[dhouston]

Hi dhouston and all,
I'm using ASK RF module, which is similar to dhouston's "http://davehouston.net/modules.htm" list. its antenna 18cm long
wire for both transmitter and receiver. No any other transmitter or some thing operate nearby.

ASK and OOK are essentially the same. The noise issue is illustrated here...

• http://davehouston.net/rf-noise.htm

It's easy to use your PC soundcard as a storage oscilloscope to view the receiver output. See...

• http://davehouston.net/learn.htm

As mackrackit has noted, something around 22-23cm antenna length will work best for 315MHz. The exact length is more critical for the transmitter than the receiver but cutting both to the appropriate length works best.