I thought i'd update my post with more information as i am still unable to resolve my receiver difficulties and really require some intervention.

My PC side is like this for hardware:

PC SERIAL PORT TX > PIN2 TWS TRANSMITTER MODULE (works) Sends output of serial port from Visual Basic program using Com 1 2400,n,8,1
PC SERIAL PORT GND > GND

PC SERIAL PORT RX < RWS-434 Data out (have tried both pin 2 "Digital" output, tried pin 3 "Linear" output with 47k resistor to ground, "Linear" is what is used successfully on the remote pic side.) doesnt work or strange charecters received.

The Pic side looks like this:

pin 1 (PortA.2 "serpin" in my pic's software program) to RWS-434 modules "Linear" data output with 47k resistor to ground. (Works) Pic receives data qualifier and procceds through program as expected. The pic side RWS-434 has pin 1 > GND, pin 2 > SOMETIMES TO SERIAL PORT RX, pin 3 > SOMETIMES TO SERIAL PORT RX , pin 4 > VCC +5 (4.9), pin 5 > VCC +5 , pin 6 > GND , pin 7 > GND , pin 8 > ANT.

pin 2 (PortA.3 "serpout" in my pic's software program) to TWS-434A "data in" pin 2.

The 4 antennas (I'd eventually like to use just the 1 on each side) have been swapped in one at a time to the working PC > PIC TWS > RWS part of the circuit so they can likely be ruled out as the problem.

The project is currently breadboarded (3 breadboards actually) with the PC side device (meaning the TWS+RWS+7805C) on a smaller breadboard.

The pic side layout currently is having the Pic and teh tws on a small breadboard with the working RWS on its own breadboard. ( I scrapped a couple of working TX > RX TWS / RWS w/ holtek encoders that i had going to start development immediately of the serial RF modem type communication)

The PIC program is as follows: (sorry for the mamoth post but i thought it be good to post the complete picture)

More of my questions and comments after the code:

(my post is too long i'll re-post my code)


As you can see i'm hoping to eventually Parse the returned data.

But first to get the data over RF from the pic side.

Any ideas on what is my problem... maybe we could move this post to a more appropriate section... i didnt realize i was in the PIC wishlist (oops, sorry)