Steve Markgraf fc5881d4cd add support for direct sampling mode ... This commit adds the function rtlsdr_set_direct_sampling() which can be used to enable/disable a mode where the RTL2832 acts as a direct sampling receiver. This mode disables the tuner, and by attaching a long wire, or better, a 50Ω to 200Ω transformer and a lowpass- filter to the In-phase ADC input (pin 1 or 2 of the RTL2832, whereas pin 1 is at the molded dot) it is possible to listen to shortwave radio stations. The coupling capacitors can be left in place, but for better results they should be removed. Tuning in this mode is done with the DDC, and since the ADC samples with 28.8 MHz, tuning is possible from 0 to 28.8 MHz. Signed-off-by: Steve Markgraf <steve@steve-m.de>		2012-09-13 21:53:51 +02:00
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CMakeLists.txt	cmake & autotools fixes from previous commit	2012-04-02 21:42:24 +02:00
Makefile.am	autotools: add missing header	2012-09-08 21:42:58 +02:00
reg_field.h	use new E4000 tuner driver, allow manual gain	2012-05-04 23:02:29 +02:00
rtl-sdr_export.h	adjust project slogan	2012-04-03 20:18:20 +02:00
rtl-sdr.h	add support for direct sampling mode	2012-09-13 21:53:51 +02:00
rtlsdr_i2c.h	introduce api to configure crystal oscillator frequency	2012-04-25 22:32:51 +02:00
tuner_e4k.h	tuner_e4k: update license in header	2012-07-30 23:29:41 +02:00
tuner_fc0012.h	tuner_fc0012: use new cleaned-up driver	2012-05-29 03:31:49 +02:00
tuner_fc0013.h	tuner_fc0013: improve tuning resolution	2012-05-27 15:33:11 +02:00
tuner_fc2580.h	add FCI FC2580 tuner support	2012-04-01 20:06:33 +02:00
tuner_r820t.h	add support for direct sampling mode	2012-09-13 21:53:51 +02:00