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[Patch-gnuradio] GFSK blocks

From: wayne roberts
Subject: [Patch-gnuradio] GFSK blocks
Date: Fri, 13 Apr 2012 17:48:19 -0700

GFSK is used by many low cost unlicensed transceivers chips, such as Si44xx, SX1231, CC11xx, ADF70xx, etc.

This patch is made from, but allows FM sensitivity to be changed independently to permit wider FM deviations used by these radio chips.
The intention is to not touch/break GMSK (for GSM users), but instead add

MSK has fixed 0.25 modulation index, where FSK can have modulation indexes usually between 0.5 and 2.0

This is tested using example gfsk_loopback.grc, based off of dpsk_loopback example.

Attachment: gfsk.patch
Description: Binary data

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