Thanks to everyone for the fast responses.

The trick I was missing was to send the data as octal as per your suggestions. So for example if I use 
$MySocket->send("\02\8\03");

[download]
The receiving end sees this as hex "02 38 03" (STX 8 ETX). Which is exactly correct. I can use the octal conversion functions as suggested by you guys to convert string "en mass".

Many thanks for everyones help!

In reply to Re^2: Terminal Client by cstrong
in thread Terminal Client by cstrong

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