This is a set of Python/numpy/scipy terminal-window programs for HF JT65 (jt65i.py) and FT8 (ft8i.py). With an Elecraft K3, both can listen for CQs on multiple receivers simultaneously, and switch the receiver(s) among bands each minute. There are also demodulators for WSPR, APRS, WWV, and WWVB. The software works on Macs, Linux, and FreeBSD. For an FT8 demodulator in C++, see ft8mon.
While these programs don't use Joe Taylor's WSJT software, they do incorporate ideas and protocol details derived from that software. These programs use Phil Karn's Reed-Solomon and convolutional decoders.
My (Peter Marks) fork is focussed on running WSPR on python3 and I'm testing on Ubuntu 21.10. Thanks to kholia for his work that I'm forking from.
The software depends on a few packages. Here's how to install them on Ubuntu Linux:
sudo apt install python3-six
sudo apt install gcc-5
sudo apt install python3-numpy
sudo apt install python3-scipy
sudo apt install python3-pyaudio
sudo apt install python3-serial
Now compile the LDPC decoder, and Phil Karn's Reed-Solomon and convolutional decoders:
(cd libldpc ; make)
(cd libfano ; make)
(cd librs ; make)
At this point you should be able to run ft8i.py, jt65i.py, wsprmon.py, etc. with no arguments, and see lists of available sound cards and serial ports, like this:
% python3 ft8i.py
usage: ft8i.py [-h] [-card CARD CHAN] [-cat TYPE DEV] [-levels] [-v]
[-band BAND] [-bands BANDS] [-card2 CARD CHAN]
[-card3 CARD CHAN] [-card4 CARD CHAN] [-out CARD] [-test]
sound card numbers for -card and -out:
0: Built-in Output, channels=0
1: USB Audio CODEC , channels=0
2: USB Audio CODEC , channels=2 11025 12000 16000 22050 44100 48000
or -card sdrip IPADDR
or -card sdriq /dev/SERIALPORT
or -card eb200 IPADDR
or -card sdrplay sdrplay
serial devices for -cat:
/dev/cu.usbserial-A503XT23
/dev/cu.Bluetooth-Incoming-Port
radio types for -cat: k3 rx340 8711 sdrip sdriq r75 r8500 ar5000 eb200 sdrplay prc138
Here's how I run WSPR receive with an IC-7300 connected via USB.
$ python3 wsprmon.py -card 6 0 -band 40
ALSA lib pcm.c:2660:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.rear
ALSA lib pcm.c:2660:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.center_lfe
ALSA lib pcm.c:2660:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.side
ALSA lib pcm_route.c:877:(find_matching_chmap) Found no matching channel map
ALSA lib pcm_route.c:877:(find_matching_chmap) Found no matching channel map
ALSA lib pcm_route.c:877:(find_matching_chmap) Found no matching channel map
ALSA lib pcm_route.c:877:(find_matching_chmap) Found no matching channel map
ALSA lib pcm_oss.c:377:(_snd_pcm_oss_open) Unknown field port
ALSA lib pcm_oss.c:377:(_snd_pcm_oss_open) Unknown field port
ALSA lib pcm_usb_stream.c:486:(_snd_pcm_usb_stream_open) Invalid type for card
ALSA lib pcm_usb_stream.c:486:(_snd_pcm_usb_stream_open) Invalid type for card
reporting to wsprnet as VK3TPM at QF22ds.
ALSA lib pcm.c:2660:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.rear
ALSA lib pcm.c:2660:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.center_lfe
ALSA lib pcm.c:2660:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.side
ALSA lib pcm_route.c:877:(find_matching_chmap) Found no matching channel map
ALSA lib pcm_route.c:877:(find_matching_chmap) Found no matching channel map
ALSA lib pcm_route.c:877:(find_matching_chmap) Found no matching channel map
ALSA lib pcm_route.c:877:(find_matching_chmap) Found no matching channel map
ALSA lib pcm_oss.c:377:(_snd_pcm_oss_open) Unknown field port
ALSA lib pcm_oss.c:377:(_snd_pcm_oss_open) Unknown field port
ALSA lib pcm_usb_stream.c:486:(_snd_pcm_usb_stream_open) Invalid type for card
ALSA lib pcm_usb_stream.c:486:(_snd_pcm_usb_stream_open) Invalid type for card
15/02/22 00:02 7.040104 VK2GZZ QF46 23 -4 2.0 0.0 Australia
To report to WSPRnet you'll need to set up a weak.cfg file by copying the example weak.cfg.example
If you've hooked up a transceiver with VOX to your computer's sound card, and set it to 14.074 and USB, you can use ft8i.py like this:
% python3 ft8i.py -card 2 0 -out 1 -band 20
The "-card 2 0" means the left (0) channel of sound card number 2 (as listed in ft8i.py's "usage" output). The "-out 1" means sound card 1.
ft8i.py will display decoded messages, and mark each received CQ with a letter; type the letter to respond to the CQ.
ft8i.py can automatically switch among a set of bands, once per minute. For example, this command will tell a K3 to scan 30, 20, and 17 meters for JT65.
% python3 ft8i.py -card 2 0 -out 1 -cat k3 /dev/cu.usbserial-A503XT23 -bands "30 20 17"
ft8i.py can listen to multiple receivers at the same time, so that you can look for CQs on more than one band simultaneously. For example, for a K3 with a sub-receiver:
% python3 ft8i.py -card 2 0 -out 1 -cat k3 /dev/cu.usbserial-A503XT23 -card2 2 1 -cat2 k3 - -bands "40 30 20"
For a K3 (without sub-receiver) and an RFSpace NetSDR/CloudIQ/SDR-IP:
% python3 ft8i.py -card 2 0 -out 1 -cat k3 /dev/cu.usbserial-A503XT23 -card2 sdrip 192.168.3.130 -bands "40 30 20"
For a K3 with sub-receiver and an RFSpace NetSDR/CloudIQ/SDR-IP (i.e. three receivers):
% python3 ft8i.py -card 2 0 -out 1 -cat k3 /dev/cu.usbserial-A503XT23 -card2 2 1 -cat2 k3 - -card3 sdrip 192.168.3.130 -bands "40 30 20"
You may need to take steps to give yourself permission to use the serial device (change its mode or put yourself in the appropriate group).
The aprsmon.py, jt65mon.py, wsprmon.py, wwvbmon.py, and wwvmon.py programs each decode and display receptions for the respective format. They use argument conventions similar to those of ft8i.py.
These programs can switch among bands on a number of radio types: Elecraft K3, Ten-Tec RX-340, Watkins Johnson WJ-8711, RFSpace SDR-IP, RFSpace CloudIQ, RFSpace NetSDR, RFSpace SDR-IQ, Icom R75, Icom R8500, AOR AR5000, Rohde and Schwarz EB200, SDRplay, and Harris PRC-138.
Use the -levels flag to help adjust the audio level from the radio. Peaks of a few thousand are good.
You must set your call sign and grid to send with jt65i.py or ft8i.py, or to report to wsprnet and pskreporter. Do this by copying weak.cfg.example to weak.cfg, un-commenting the mycall and mygrid lines, and changing them to your callsign and grid.
Your computer's clock must be correct to within about second for WSPR, JT65, and FT8; try ntp.
This software surely contains errors, particularly since I'm no expert at signal processing. I'd appreciate fixes for any bugs you discover.
Robert Morris, AB1HL
I started this fork because I tried running WSPR under python3 on Ubuntu and got exceptions like this:
Exception in thread Thread-1:
Traceback (most recent call last):
File "/usr/lib/python3.9/threading.py", line 973, in _bootstrap_inner
self.run()
File "/usr/lib/python3.9/threading.py", line 910, in run
self._target(*self._args, **self._kwargs)
File "/home/marksp/Developer/weakmon-master/wsprmon.py", line 129, in <lambda>
self.rth = threading.Thread(target=lambda : self.r.gocard())
File "/home/marksp/Developer/weakmon-master/wspr.py", line 438, in gocard
self.process(samples[i0:], t)
File "/home/marksp/Developer/weakmon-master/wspr.py", line 563, in process
dec = self.process1(samples_minute, ss[0:162], hza, noise)
File "/home/marksp/Developer/weakmon-master/wspr.py", line 1219, in process1
[ msgbits, metric ] = nfano_decode(sym0, sym1)
File "/home/marksp/Developer/weakmon-master/wspr.py", line 139, in nfano_decode
out_array_type = c_ubyte * (len(in0) / 2)
TypeError: can't multiply sequence by non-int of type 'float'
I think what's going on is that the value returned by len() gets converted to a float if some arithmetic operation is done on the result.
React
Typescript
Django
Laravel
Facebook
Microsoft
Google
Alibaba
D3
Tencent