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| author | Arturs Artamonovs <dos21h@gmail.com> | 2024-11-22 03:02:32 +0000 |
|---|---|---|
| committer | Arturs Artamonovs <dos21h@gmail.com> | 2024-11-22 03:02:32 +0000 |
| commit | 99ce29175d5a7883adbd63383a3e6fe33cabfcca (patch) | |
| tree | 653a4602362b881d792f6ab6cc83254f11ca54fe /md/notes | |
| parent | 603d2f24c5240be100f69515b0655e2e4f8561d2 (diff) | |
| download | md-content-99ce29175d5a7883adbd63383a3e6fe33cabfcca.tar.gz md-content-99ce29175d5a7883adbd63383a3e6fe33cabfcca.zip | |
sdr: update the cw with images
Diffstat (limited to 'md/notes')
| -rw-r--r-- | md/notes/sdr/gnu_radio_receive_cw.md | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/md/notes/sdr/gnu_radio_receive_cw.md b/md/notes/sdr/gnu_radio_receive_cw.md index dd32c39..2c69a98 100644 --- a/md/notes/sdr/gnu_radio_receive_cw.md +++ b/md/notes/sdr/gnu_radio_receive_cw.md @@ -3,3 +3,41 @@ keywords:sdr,airspy,gnuradio # +Lets listen to CW/morse on HAM bands + +## Frequencies + +The easiest frequencies where CW tranmissions can be spotted are on +HAM bands. There is option to search for military related ones but those +are dependent on schedule. + +| Bands, KHz Lower Limit| Upper Limit | +| --- | --- | +| 3500 | 3560 | +| 5258.5 | 5264.0 | +| 7000 | 7040 | +| 10100 | 10130 | +| 28000 | 28070 | + +## GNU radio blocks + +Here is the blocks that monitors the CW on few HAM bands + + + + + +This creates tunes to central frequency as channel0 and channel1 +is offset from central frequency. To catch few CW transmissions if there is any +and allowe to switch between 2 of those with slider. + +## Links + +https://en.wikipedia.org/wiki/Morse_code +https://rsgb.org/main/operating/band-plans/hf/ +https://rsgb.org/main/operating/band-plans/hf/3-5mhz/ +https://rsgb.org/main/operating/band-plans/hf/5mhz/ +https://rsgb.org/main/operating/band-plans/hf/7mhz/ +https://rsgb.org/main/operating/band-plans/hf/10mhz/ +https://rsgb.org/main/operating/band-plans/hf/28mhz/ + |