Disinilah aku kumpulkan segalanya...: how to decode Radiosonde Weathex Wxr-301D

Ini adalah kaedah yang paling asas sekali dalam proses dekod payload ini.

step 1 :

git clone https://github.com/rs1729/RS.git --branch test --single-branch

cd RS

cd weathex

tukar nama file weathex_20230512_401100kHz.c ke weathex.c , pendek sikit sedap mata memandang.

mv weathex_20230512_401100kHz.c weathex.c

compile fail weathex.c

gcc weathex.c -lm -o weathex

OK siap, sekarang mari kita test. download sample audio Wxr-301D di sini, kredit kepada 9W2RUT diatas rakamannya. ini adalah rakaman radiosonde KLIA.

https://drive.google.com/drive/folders/18_jP7fFdnwR7SiAJHTHSYHdl4uiUZMTl

pilih mana-mana rakaman, saya pilih yang paling kecil saiz dia (jimat masa sikit nak test). Kemudian...

./weathex -b audio_401100000Hz_20-19-46_12-05-2023.wav

hasilnya adalah seperti ini.

pi@9m2zak:~/RS/weathex $ ./weathex -b audio_401100000Hz_20-19-46_12-05-2023.wav

sample_rate: 48000

bits : 16

channels : 2

samples/bit: 10.00

(0x89375412) [ 4325] 12:19:22 alt: 12296.7 lat: 2.6765 lon: 101.5865 [OK]

(0x89375412) [ 4326] 12:19:23 alt: 12300.8 lat: 2.6765 lon: 101.5865 [OK]

(0x89375412) [ 4327] 12:19:24 alt: 12305.2 lat: 2.6765 lon: 101.5864 [OK]

(0x89375412) [ 4328] 12:19:25 alt: 12309.2 lat: 2.6765 lon: 101.5864 [OK]

(0x89375412) [ 4329] 12:19:26 alt: 12313.2 lat: 2.6766 lon: 101.5863 [OK]

(0x89375412) [ 4330] 12:19:27 alt: 12317.4 lat: 2.6766 lon: 101.5863 [OK]

(0x89375412) [ 4331] 12:19:28 alt: 12321.7 lat: 2.6766 lon: 101.5862 [OK]

(0x89375412) [ 4332] 12:19:29 alt: 12325.9 lat: 2.6767 lon: 101.5862 [OK]

(0x89375412) [ 4333] 12:19:30 alt: 12330.2 lat: 2.6767 lon: 101.5861 [OK]

(0x89375412) [ 4334] 12:19:31 alt: 12333.9 lat: 2.6767 lon: 101.5861 [OK]

(0x89375412) [ 4335] 12:19:32 alt: 12338.4 lat: 2.6768 lon: 101.5860 [OK]

(0x89375412) [ 4336] 12:19:33 alt: 12342.3 lat: 2.6768 lon: 101.5860 [OK]

(0x89375412) [ 4337] 12:19:34 alt: 12346.4 lat: 2.6768 lon: 101.5859 [OK]

(0x89375412) [ 4338] 12:19:35 alt: 12350.4 lat: 2.6769 lon: 101.5859 [OK]

(0x89375412) [ 4339] 12:19:36 alt: 12355.0 lat: 2.6769 lon: 101.5858 [OK]

(0x89375412) [ 4340] 12:19:37 alt: 12359.9 lat: 2.6769 lon: 101.5858 [OK]

(0x89375412) [ 4341] 12:19:38 alt: 12364.7 lat: 2.6769 lon: 101.5857 [OK]

(0x89375412) [ 4342] 12:19:39 alt: 12369.1 lat: 2.6770 lon: 101.5856 [OK]

(0x89375412) [ 4343] 12:19:40 alt: 12373.2 lat: 2.6770 lon: 101.5856 [OK]

(0x89375412) [ 4344] 12:19:41 alt: 12377.4 lat: 2.6770 lon: 101.5855 [OK]

(0x89375412) [ 4345] 12:19:42 alt: 12382.2 lat: 2.6771 lon: 101.5855 [OK]

(0x89375412) [ 4346] 12:19:43 alt: 12386.3 lat: 2.6771 lon: 101.5855 [OK]

(0x89375412) [ 4347] 12:19:44 alt: 12390.7 lat: 2.6771 lon: 101.5854 [OK]

(0x89375412) [ 4348] 12:19:45 alt: 12394.8 lat: 2.6772 lon: 101.5854 [OK]

(0x89375412) [ 4349] 12:19:46 alt: 12399.2 lat: 2.6772 lon: 101.5853 [OK]

(0x89375412) [ 4350] 12:19:47 alt: 12403.5 lat: 2.6772 lon: 101.5853 [OK]

(0x89375412) [ 4351] 12:19:48 alt: 12408.0 lat: 2.6772 lon: 101.5852 [OK]

(0x89375412) [ 4352] 12:19:49 alt: 12412.6 lat: 2.6773 lon: 101.5851 [OK]

(0x89375412) [ 4353] 12:19:50 alt: 12417.0 lat: 2.6773 lon: 101.5851 [OK]

(0x89375412) [ 4354] 12:19:51 alt: 12421.3 lat: 2.6773 lon: 101.5850 [OK]

(0x89375412) [ 4355] 12:19:52 alt: 12425.3 lat: 2.6774 lon: 101.5850 [OK]

(0x89375412) [ 4356] 12:19:53 alt: 12429.7 lat: 2.6774 lon: 101.5850 [OK]

(0x89375412) [ 4357] 12:19:54 alt: 12433.8 lat: 2.6774 lon: 101.5849 [OK]

(0x89375412) [ 4358] 12:19:55 alt: 12437.9 lat: 2.6775 lon: 101.5849 [OK]

(0x89375412) [ 4359] 12:19:56 alt: 12442.0 lat: 2.6775 lon: 101.5848 [OK]

(0x89375412) [ 4360] 12:19:57 alt: 12446.5 lat: 2.6775 lon: 101.5848 [OK]

(0x89375412) [ 4361] 12:19:58 alt: 12450.6 lat: 2.6776 lon: 101.5847 [OK]

(0x89375412) [ 4362] 12:19:59 alt: 12455.0 lat: 2.6776 lon: 101.5847 [OK]

(0x89375412) [ 4363] 12:20:00 alt: 12459.0 lat: 2.6776 lon: 101.5846 [OK]

(0x89375412) [ 4364] 12:20:01 alt: 12463.1 lat: 2.6776 lon: 101.5846 [OK]

(0x89375412) [ 4365] 12:20:02 alt: 12466.8 lat: 2.6776 lon: 101.5845 [OK]

(0x89375412) [ 4366] 12:20:03 alt: 12470.9 lat: 2.6777 lon: 101.5844 [OK]

(0x89375412) [ 4367] 12:20:04 alt: 12475.3 lat: 2.6777 lon: 101.5844 [OK]

(0x89375412) [ 4368] 12:20:05 alt: 12479.8 lat: 2.6777 lon: 101.5844 [OK]

(0x89375412) [ 4369] 12:20:06 alt: 12483.8 lat: 2.6778 lon: 101.5843 [OK]

(0x89375412) [ 4370] 12:20:07 alt: 12487.5 lat: 2.6778 lon: 101.5843 [OK]

(0x89375412) [ 4371] 12:20:08 alt: 12491.9 lat: 2.6778 lon: 101.5842 [OK]

(0x89375412) [ 4372] 12:20:09 alt: 12496.0 lat: 2.6778 lon: 101.5842 [OK]

(0x89375412) [ 4373] 12:20:10 alt: 12500.2 lat: 2.6779 lon: 101.5841 [OK]

(0x89375412) [ 4374] 12:20:11 alt: 12504.5 lat: 2.6779 lon: 101.5841 [OK]

(0x89375412) [ 4375] 12:20:12 alt: 12509.3 lat: 2.6779 lon: 101.5840 [OK]

(0x89375412) [ 4376] 12:20:13 alt: 12513.7 lat: 2.6780 lon: 101.5840 [OK]

(0x89375412) [ 4377] 12:20:14 alt: 12518.9 lat: 2.6780 lon: 101.5839 [OK]

(0x89375412) [ 4378] 12:20:15 alt: 12522.9 lat: 2.6780 lon: 101.5838 [OK]

(0x89375412) [ 4379] 12:20:16 alt: 12527.3 lat: 2.6780 lon: 101.5838 [OK]

(0x89375412) [ 4380] 12:20:17 alt: 12531.5 lat: 2.6780 lon: 101.5838 [OK]

(0x89375412) [ 4381] 12:20:18 alt: 12536.3 lat: 2.6781 lon: 101.5837 [OK]

(0x89375412) [ 4382] 12:20:19 alt: 12540.8 lat: 2.6781 lon: 101.5837 [OK]

(0x89375412) [ 4383] 12:20:20 alt: 12545.2 lat: 2.6781 lon: 101.5836 [OK]

(0x89375412) [ 4384] 12:20:21 alt: 12550.1 lat: 2.6782 lon: 101.5836 [OK]

(0x89375412) [ 4385] 12:20:22 alt: 12554.6 lat: 2.6782 lon: 101.5835 [OK]

(0x89375412) [ 4386] 12:20:23 alt: 12559.0 lat: 2.6782 lon: 101.5834 [OK]

(0x89375412) [ 4387] 12:20:24 alt: 12563.5 lat: 2.6782 lon: 101.5834 [OK]

(0x89375412) [ 4388] 12:20:25 alt: 12567.7 lat: 2.6783 lon: 101.5833 [OK]

(0x89375412) [ 4389] 12:20:26 alt: 12571.6 lat: 2.6783 lon: 101.5833 [OK]

(0x89375412) [ 4390] 12:20:27 alt: 12576.0 lat: 2.6783 lon: 101.5832 [OK]

(0x89375412) [ 4391] 12:20:28 alt: 12579.6 lat: 2.6783 lon: 101.5832 [OK]

(0x89375412) [ 4392] 12:20:29 alt: 12584.1 lat: 2.6783 lon: 101.5831 [OK]

(0x89375412) [ 4393] 12:20:30 alt: 12587.7 lat: 2.6784 lon: 101.5831 [OK]

(0x89375412) [ 4394] 12:20:31 alt: 12591.5 lat: 2.6784 lon: 101.5830 [OK]

(0x89375412) [ 4395] 12:20:32 alt: 12595.8 lat: 2.6784 lon: 101.5830 [OK]

(0x89375412) [ 4396] 12:20:33 alt: 12600.3 lat: 2.6785 lon: 101.5829 [OK]

(0x89375412) [ 4397] 12:20:34 alt: 12604.4 lat: 2.6785 lon: 101.5828 [OK]

(0x89375412) [ 4398] 12:20:35 alt: 12609.0 lat: 2.6785 lon: 101.5828 [OK]

(0x89375412) [ 4399] 12:20:36 alt: 12612.9 lat: 2.6785 lon: 101.5827 [OK]

(0x89375412) [ 4400] 12:20:37 alt: 12616.6 lat: 2.6785 lon: 101.5827 [OK]

(0x89375412) [ 4401] 12:20:38 alt: 12620.8 lat: 2.6786 lon: 101.5826 [OK]

(0x89375412) [ 4402] 12:20:39 alt: 12624.9 lat: 2.6786 lon: 101.5826 [OK]

(0x89375412) [ 4403] 12:20:40 alt: 12629.3 lat: 2.6786 lon: 101.5825 [OK]

(0x89375412) [ 4404] 12:20:41 alt: 12633.8 lat: 2.6786 lon: 101.5825 [OK]

(0x89375412) [ 4405] 12:20:42 alt: 12638.1 lat: 2.6787 lon: 101.5824 [OK]

(0x89375412) [ 4406] 12:20:43 alt: 12642.6 lat: 2.6787 lon: 101.5824 [OK]

(0x89375412) [ 4407] 12:20:44 alt: 12646.6 lat: 2.6787 lon: 101.5823 [OK]

(0x89375412) [ 4408] 12:20:45 alt: 12651.7 lat: 2.6787 lon: 101.5823 [OK]

(0x89375412) [ 4409] 12:20:46 alt: 12655.3 lat: 2.6788 lon: 101.5822 [OK]

(0x89375412) [ 4410] 12:20:47 alt: 12659.0 lat: 2.6788 lon: 101.5822 [OK]

(0x89375412) [ 4411] 12:20:48 alt: 12663.7 lat: 2.6788 lon: 101.5821 [OK]

(0x89375412) [ 4412] 12:20:49 alt: 12668.1 lat: 2.6788 lon: 101.5821 [OK]

(0x89375412) [ 4413] 12:20:50 alt: 12672.6 lat: 2.6788 lon: 101.5820 [OK]

(0x89375412) [ 4414] 12:20:51 alt: 12677.5 lat: 2.6789 lon: 101.5820 [OK]

(0x89375412) [ 4415] 12:20:52 alt: 12681.7 lat: 2.6789 lon: 101.5819 [OK]

pi@9m2zak:~/RS/weathex $

siap sudah bagi decode menggunakan cara rakaman, untuk decode secara terus atau real time pula, ikut step ini.

sudo apt-get update

sudo apt-get upgrade

sudo apt-get install python3 python3-numpy python3-setuptools python3-crcmod python3-requests python3-dateutil python3-pip python3-flask sox git build-essential libtool cmake usbutils libusb-1.0-0-dev rng-tools libsamplerate-dev libatlas3-base libgfortran5

kemudian install dongle anda.

git clone https://github.com/osmocom/rtl-sdr.git
cd rtl-sdr
mkdir build
cd build
cmake -DINSTALL_UDEV_RULES=ON -DDETACH_KERNEL_DRIVER=ON ../
sudo make install
sudo ldconfig

kemudian....

sudo nano /etc/modprobe.d/rtlsdr-blacklist.conf

tambah list ini,

blacklist dvb_usb_rtl28xxu
blacklist rtl2832
blacklist rtl2830
blacklist dvb_usb_rtl2832u
blacklist dvb_usb_v2
blacklist dvb_core
kemudian periksa samada dongle anda sukses atau tidak install
rtl_test

Found 1 device(s):
  0:  Realtek, RTL2838UHIDIR, SN: 00000002

Using device 0: Generic RTL2832U OEM
Found Rafael Micro R820T tuner
Supported gain values (29): 0.0 0.9 1.4 2.7 3.7 7.7 8.7 12.5 14.4 15.7 16.6 19.7 20.7 22.9 25.4 28.0 29.7 32.8 33.8 36.4 37.2 38.6 40.2 42.1 43.4 43.9 44.5 48.0 49.6
[R82XX] PLL not locked!
Sampling at 2048000 S/s.

Info: This tool will continuously read from the device, and report if
samples get lost. If you observe no further output, everything is fine.

Reading samples in async mode...

ok sukses, rtl-sdr dongle anda sudah siap. ok jom decode real time plak (tapi kena buat time radiosonde Weathex Wxr-301D terbanglah, sila semak jadual pelepasan di kawasan anda)

cd RS

cd weathex

pi@9m2zak:~/RS/weathex $ rtl_fm -M fm -s 64k -f 401.1M | sox -t raw -r 64k -e s -b 16 -c 1 - -r 48000 -t wav - lowpass 4000 2>/dev/null | ./weathex -b

ubah frequency mengikut freq lokalan anda. katakan di Kuantan, maka akan jadi...

pi@9m2zak:~/RS/weathex $ rtl_fm -M fm -s 64k -f 401.490M | sox -t raw -r 64k -e s -b 16 -c 1 - -r 48000 -t wav - lowpass 4000 2>/dev/null | ./weathex -b

Kalau di Bayan Lepas, maka akan jadi...

pi@9m2zak:~/RS/weathex $ rtl_fm -M fm -s 64k -f 404.300M | sox -t raw -r 64k -e s -b 16 -c 1 - -r 48000 -t wav - lowpass 4000 2>/dev/null | ./weathex -b

tapi freq tepat untuk Kuantan dan Bayan Lepas saya tak pasti ketepatannya, untuk lebih tepat, pantau dahulu dengan menggunakan sdr sharp. Kota Bharu pun sama juga. apabila dah dapat freq di tempat anda, maka gantikan sahajalah.

Kredit kepada 9m2tpt atas usaha beliau bagi mencari jalan agar radiosonde Weathex Wxr-301D ini dapat di dekod.

Baiklah sampai disini sahaja dulu posting saya, jumpa lagi pada post-post akan datang. selamat memburu radiosonde gais..... KITA MOVE ON!!!

Sumber rujukan : https://github.com/rs1729/RS