Wireless problem

[skimask]

I just noticed that your code has you powering up the TX and then sending straight away.
I don't think I've ever had good luck doing it like that. I've always given my TX module a solid 5ms to stabilize before sending out the preamble.
But that's just me, and that's the only way I've tried it. It might or might not be alright to transmit right after power is turned on.
And based on what you are saying about changing the baud rate numbers according to Mr.E's calculator and the problem getting worse, I'd still be inclined to think that your oscillator is off. Yes, your PC can receive it, but maybe it's able to receive 'sloppier' serial than the receiving PIC can.

[dhouston]

I've even used the data signal to simultaneously supply power to the transmitter and it works just fine.

Also, I see many people here saying the internal oscillator isn't stable enough but X-10 has used the internal oscillator in a 12C508A (in their MR26A & E) with a 9600bps TTL RS232 link for a few years now with no problems. Nor have I had any problems using a 12F629 @9600 using the internal oscillator.

[skimask]

I've even used the data signal to simultaneously supply power to the transmitter and it works just fine.

Good info for me then. I see an increase in data rates in the near future with my modules...

Also, I see many people here saying the internal oscillator isn't stable enough but X-10 has used the internal oscillator in a 12C508A (in their MR26A & E) with a 9600bps TTL RS232 link for a few years now with no problems. Nor have I had any problems using a 12F629 @9600 using the internal oscillator.

Do you use OSCTUNE as applicable and tweak it as required or have they just plain ol' been good enough in your experience?

[dhouston]

Do you use OSCTUNE as applicable and tweak it as required or have they just plain ol' been good enough in your experience?

I've never found the need to tweak it beyond the factory calibration. I programmed the 12F629 as an enhanced replacement for the 12C508A in the MR26. I've never had a complaint from hundreds of users. I'm sure there are many thousands using the original and I've never seen any complaints about it either.

My use of the data line for Vcc is with the NEC protocol where the shortest pulse/space is 500µS. (I've given examples in the Code Examples forum). Faster protocols might have problems but I have seen none.