linux/drivers/media/video/em28xx
Gianluca Gennari 38f0fe23dc [media] em28xx-dvb: enable LNA for cxd2820r in DVB-T mode
Enable the LNA amplifier also for DVB-T (like for DVB-T2 and DVB-C);
this greatly improves reception of weak signals without affecting the reception
of the strong ones.

Experimental data (collected with the mipsel STB) on the weakest frequencies
available in my area:

LNA OFF:

MUX          level   BER     picture

RAI mux 4    72%     32000   corrupted
TIMB 2       75%     14      OK
TVA Vicenza  68%     32000   corrupted
RAI mux 2    78%     14      OK

LNA ON:

MUX          level   BER     picture

RAI mux 4    73%     1500    OK
TIMB 2       76%     0       OK
TVA Vicenza  69%     0       OK
RAI mux 2    79%     0       OK

Moreover, with LNA enabled, the PCTV 290e was able to pick up 2 new frequencies
matching the integrated tuner of my Panasonic G20 TV, which is really good.

Signed-off-by: Gianluca Gennari <gennarone@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-05-15 09:26:53 -03:00
..
em28xx-audio.c [media] v4l: fix compiler warnings 2012-05-14 14:47:03 -03:00
em28xx-cards.c [media] em28xx: Remove unused wait_queue's 2012-05-15 08:07:39 -03:00
em28xx-core.c [media] em28xx: Export em28xx_[read,write]_reg functions as SYMBOL_GPL 2012-04-10 20:40:26 -03:00
em28xx-dvb.c [media] em28xx-dvb: enable LNA for cxd2820r in DVB-T mode 2012-05-15 09:26:53 -03:00
em28xx-i2c.c [media] em28xx: Move ir/rc related initialization to em28xx_ir_init() 2012-04-10 20:41:39 -03:00
em28xx-input.c [media] em28xx: Make em28xx-input.c a separate module 2012-04-10 20:45:41 -03:00
em28xx-reg.h [media] em28xx: Reworked probe code to get rid of some hacks 2012-01-06 11:37:07 -02:00
em28xx-vbi.c [media] media: fix em28xx build, needs hardirq.h 2010-12-29 08:17:02 -02:00
em28xx-video.c [media] em28xx: Remove unused wait_queue's 2012-05-15 08:07:39 -03:00
em28xx.h [media] em28xx: Remove unused wait_queue's 2012-05-15 08:07:39 -03:00
Kconfig [media] em28xx: Make em28xx-input.c a separate module 2012-04-10 20:45:41 -03:00
Makefile [media] em28xx: Make em28xx-input.c a separate module 2012-04-10 20:45:41 -03:00