Re: [amsat-bb] Oscar 11 demodulator

[Sil - PA3HIL <pa3hil@xxxxxxxxx>]

Phil

I built mine from a Texas Instruments IC TCM 3105 and a Simpex 232A. I 
don't think the 3105 is manufactured anymore, and I savaged mind from an 
old 1200 b/s modem. The SP232A just does the conversion from TTL to RS232 
levels and runs on +5v, generating it's own RS232 voltages (great IC's for 
anything you build that connects to the serial port).

You could also use a 7910, althought that's probably not made anymore either.

You can find info at http://www.users.zetnet.co.uk/clivew/

Good Luck

Sil - PA3HIL


>Hello All,
>
>Can anyone provide me with an online resource that describes the construction
>of a demodulator that would be suitable for receiving data from Oscar 11?
>
>--
>Regards,
>Phil
>phil@spiderweb.com.au
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