[cbolin]

Hi,
I read the spec last Friday however the means to differentiate between the frames was not explicit. However, after posting this message last Friday, I reread it a few times and finally understood the stuff that read [CTRL_C Bit 7=0, ...]. Did some bit operations first thing this morning and everything is working fine now. :-)

So, it is necessary to read two specific bits in order to figure out which of the 3 frames are being viewed.

Byte 8, bit 4 and Byte 12, bit 7. The frames are then recognized by the following pattern respectively.
Frame 1 = 0,0
Frame 2 = 1,0
Frame 3 = 1,1

The code to read the values went like this. sRec stores the string of 26 characters.

nA4 = Asc(Mid(sRec, 8, 1)) And &H10 'byte 8, bit 4
nC7 = Asc(Mid(sRec, 12, 1)) And &H80 'byte 12, bit 7

Astronouth...I appreciate the offer for the 'control' to do this for me, but the fun in all of this programming is to write the code myself.

Thanks,
Chuck