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Diffstat (limited to 'gr-uhd/apps/hf_explorer/README')
| -rw-r--r-- | gr-uhd/apps/hf_explorer/README | 42 |
1 files changed, 0 insertions, 42 deletions
diff --git a/gr-uhd/apps/hf_explorer/README b/gr-uhd/apps/hf_explorer/README deleted file mode 100644 index 57f45ceba..000000000 --- a/gr-uhd/apps/hf_explorer/README +++ /dev/null @@ -1,42 +0,0 @@ -hfx.py is meant to be a full-featured Long Wave / Medium Wave -and Short Wave (250kHz to 30Mhz) AM and Single Sideband receiver. -It uses the USRP with a Basic RX board, and will need an -antenna and some preamps, about 30db gain will work. See the -'Help' menu or hfx_help for more info. - ----------------------------------------------------------- - -Powermate knob supported but not required, tooltip frequency display, -single click tuning, AGC, record to disk, play from disk and record -audio. Ability to tailor the audio passband with two sliders over the -spectrum display. The sliders almost align with the actual -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, -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 -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. - -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 -takes a web server, some directories and scripts to use. - - - |