On 11/09/2015 11:02 AM, John B. Wood wrote:
Thanks for that link, Ron. The person who constructed rds_rx_grc
certainly expended some effort, IMO. The flow graph is considerably
more involved than the wideband FM (monaural) receiver example that
comes packaged with GRC. I deleted the RDS blocks and this modified
flow graph does work with the E310. The fidelity of the audio would
be very good except there's a lot of noise coming through. I don't
have this with the mono example. There may be some opportunity for
noise clean-up once I absorb what's going on with the flow diagram.
Sincerely,
John B. Wood
U.S. Maval
Research Laboratory
Code 5520
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Monaural broadcast FM is much less sensitive to both multi-path effects,
and low-level on-channel RFI that stereo. You're in a building
presumably with at least some kind of not-entirely-rf-permeable skin,
and likely lots of other electronic equipment producing RF noise.
That's not ideal for a radio receiver.
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