Hello Justin,

Sorry, I'm a bit late!

Justin Grimm schrieb:
>
>   Hi all
>   Has anyone made the fsk modem by Rildo Pragana?
>   Im thinking of constructing it but am unclear on a few points.
>   1.
>   C9, C11, C13, C14, C15 and R8's values are unclear. Does
>   anyone know what they should be?

A 10kpF means 10 * 1000 pF, 10nF. (If I'm not mistaken) and a 10k
condensator should also have a value of 10nF. R8 has a value of 7500
Ohms (7.5 kOhms)

>   2.
>   Transformer T1's size or value is unclear.

It should be a 1:1 Transformer with 600 Ohms Inpedance. If you have an
old phone left you can use its transformer.

>   3.
>   Will the modem work on Australian phone network?
>
>   Can anyone fill in the blanks?
>   Thanks
>   Justin

I have not built it but it should work on almost every phone system...

Friendly Regards
Markus