Re: headache from banging head against wall

[Marcus Müller]

Hi Chris,

please, keep the walls intact and your brain operable.

Hm, I've not looked too deeply into this, but:
2 Samples per symbol means that your bandwidth should be at least
samplerate/2, and you've in fact got excess bandwidth. What does the
frequency sink on transmitter side say?

On the receiving side, you filter to samplerate/3, which is less!

Then, this has no framing, so its impossible for the receiver to know
whether something it received is the first bit in a byte!

Still a bit peculiar that you're still getting valid ASCII, no doubt.

Best regards,
Marcus

On 07.10.20 21:28, KB3CS - Chris wrote:
> after much review of Tutorials and Examples and various experiments over
> the course of many days, i give up trying to do this on my own.
> 
> i do not understand why the best i can do with the flowgraph (attached)
> using the Constellation Modulator and a BPSK Constellation Object with a
> repeating input of "Test" (4 bytes, ASCII) is an output of "W7EF" (4 bytes,
> ASCII).
> 
> where has this gone wrong? did i miss something? have i managed to make a
> simple thing difficult instead?
> 
> thanks in advance.
>