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commit 39230788d7f4b0a8d6d3ab32039073ed53e74af6
Author: Dimitri Stolnikov <horiz0n@gmx.net>
Date: Tue Oct 21 22:10:40 2014 +0200
hackrf: disable AMP gain stage by default to protect it from damage
patch proivided by Paul Connolly
diff --git a/lib/hackrf/hackrf_sink_c.cc b/lib/hackrf/hackrf_sink_c.cc
index 120b271..3a1e7da 100644
--- a/lib/hackrf/hackrf_sink_c.cc
+++ b/lib/hackrf/hackrf_sink_c.cc
@@ -213,7 +213,7 @@ hackrf_sink_c::hackrf_sink_c (const std::string &args)
set_sample_rate( get_sample_rates().start() );
set_bandwidth( 0 );
- set_gain( 14 ); /* enable AMP gain stage by default */
+ set_gain( 0 ); /* disable AMP gain stage by default to protect full sprectrum pre-amp from physical damage */
set_if_gain( 16 ); /* preset to a reasonable default (non-GRC use case) */
diff --git a/lib/hackrf/hackrf_source_c.cc b/lib/hackrf/hackrf_source_c.cc
index f647b80..e3b3ea4 100644
--- a/lib/hackrf/hackrf_source_c.cc
+++ b/lib/hackrf/hackrf_source_c.cc
@@ -168,7 +168,7 @@ hackrf_source_c::hackrf_source_c (const std::string &args)
set_sample_rate( get_sample_rates().start() );
set_bandwidth( 0 );
- set_gain( 14 ); /* enable AMP gain stage by default */
+ set_gain( 0 ); /* disable AMP gain stage by default to protect full sprectrum pre-amp from physical damage */
set_if_gain( 16 ); /* preset to a reasonable default (non-GRC use case) */
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