Some of them have a -R option for raw, I think that's what it does (rtl_fm anyway).
Any documentation on this set of programs would be a good thing, other than looking in the code or using --help.
Alan-----
Radio Astronomy - the ultimate DX
From: Sdr Guru <sdrguru1@gmail.com>
To: osmocom-sdr@lists.osmocom.org
Sent: Sunday, December 30, 2012 5:39 PM
Subject: Direct sampling mode and rtl_xxx
HiIs it possible to use rtl_fm, rtl_sdr and rtl_tcp in "Direct sampling mode"SDR Guru