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Re: [Discuss-gnuradio] Re: usrp wfm problem
From: |
Matt Ettus |
Subject: |
Re: [Discuss-gnuradio] Re: usrp wfm problem |
Date: |
Wed, 16 Feb 2005 08:59:10 -0800 |
User-agent: |
Internet Messaging Program (IMP) 4.0-cvs |
Quoting mj <address@hidden>:
> > Am i missing something obvious?
> >
>
> Fixed it. the "freq1 = blah * 1e6" evaded me.
>
> Still not sure on how to receive 433Mhz if anyone
> knows.
As RF frequency rises from 0 to 32 MHz, the "digital" frequency goes from 0 to
32 MHz. As RF frequency goes from 32 to 64, digital frequency goes back down
to 0. It the repeats from there.
So you can receive 433.0 MHz at:
433 - (6*64) = 49 MHz.
433 appears where 49 would
49-32 = 17.
32 - 17 = 15 MHz
So tune to 15 MHz to hear 433.
This will all be much easier once there are proper RF sections available.
Matt