diff options
| author | Chuck Swiger <cswiger@swigerco.com> | 2014-01-02 16:27:26 -0500 |
|---|---|---|
| committer | Chuck Swiger <cswiger@swigerco.com> | 2014-01-02 16:27:26 -0500 |
| commit | bfa658dd2c0b353ef716f16d8d4e6139878c5a7c (patch) | |
| tree | be2f33d89a5be3265d7c277a8c4df7852dba8eb0 /gr-uhd | |
| parent | f7980ba9a05fdf47cbf1a2fe9ca4d76dbced2613 (diff) | |
update README
Diffstat (limited to 'gr-uhd')
| -rw-r--r-- | gr-uhd/apps/hf_explorer/README | 24 |
1 files changed, 5 insertions, 19 deletions
diff --git a/gr-uhd/apps/hf_explorer/README b/gr-uhd/apps/hf_explorer/README index 57f45cebaf..942b84f5f6 100644 --- a/gr-uhd/apps/hf_explorer/README +++ b/gr-uhd/apps/hf_explorer/README @@ -14,28 +14,14 @@ frequency. Preset filter settings for LSB (-3000 to 0kHz), USB (0 to +3000kHz), CW (-400 to -800Hz) and AM (-5kHz from carrier to +5kHz). AM now switches in a synchronous PLL detector with the carriers at -7.5kHz. The PLL carrier is displayed in the bottom display and helps -show where on the upper spectrum the demodulated signal -lies. Everything gets shifted up 7.5kHz in AM, center frequency, +7.5kHz. Everything gets shifted up 7.5kHz in AM, center frequency, tooltips, etc. The target AM carrier needs to be closely tuned in, it -will have a hollow sound untill it is locked, and then the PLL carrier -in the bottom display will jump up and remain relatively -constant. There is a slider "AM sync carrier" to play with different -levels to mix with the signal for demodulation. The filter in AM is +will have a hollow sound until it is locked. The filter in AM is preset to 2500/12500 (7.5kHz +/- 5kHz) and is handy for removing -adjacent channel interference. Change AM_SYNC_DISPLAY in script for -whether to show AM Sync carrier or not. +adjacent channel interference. -Run with "-h" for command line help with setting USRP ddc center -frequency, decimation, rf data record, playback and audio data -recording. - -There are some controls for controlling a varactor and tuning an -antenna - just ignore them unless you want to build a voltage tuned -antenna to track frequency. - -There is also code for Web based control of frequency and volume - so -I can tune the radio with an Ipaq from bed. Disabled by default - it +There is code for Web based control of frequency and volume - so +I can tune the radio with a handheld device. Disabled by default - it takes a web server, some directories and scripts to use. |