jj1bdx

Lists of nations/regions I will and will not visit

Last update: 2-DEC-2023

Current policy effective December 2023

• Travels should be avoided as possible - risks of COVID-19 and other epicemics are still high
• Travels are limited within Greater Tokyo Area (no overnight stay)
• No travel > 100km except for family and business needs
• No air travel except for funded business needs

jj1bdx

APRS frequencies in Japan

Nationwide channels

144MHz / 2m

• 144.64MHz: GMSK 9600bps
• 144.66MHz: FSK 1200bps

430MHz / 70cm

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defaults write -g NSScrollViewRubberbanding -int 0
defaults write -g NSAutomaticWindowAnimationsEnabled -bool false
defaults write -g NSScrollAnimationEnabled -bool false
defaults write -g NSWindowResizeTime -float 0.001
defaults write -g QLPanelAnimationDuration -float 0
defaults write -g NSScrollViewRubberbanding -bool false
defaults write -g NSDocumentRevisionsWindowTransformAnimation -bool false
defaults write -g NSToolbarFullScreenAnimationDuration -float 0
defaults write -g NSBrowserColumnAnimationSpeedMultiplier -float 0
defaults write com.apple.dock autohide-time-modifier -float 0

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#EXTM3U

#PLAYLIST:CBC Radio Streams

#EXTINF:-1,CBC Music (Atlantic)
	http://cbcmp3.ic.llnwd.net/stream/cbcmp3_cbc_r2_hfx

#EXTINF:-1,CBC Music (Central)
	http://cbcmp3.ic.llnwd.net/stream/cbcmp3_cbc_r2_wpg

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# conservative level setting
airspy-fmradion -E100 -t airspyhf -c freq=89700000 -F - | \
sox -t raw -e floating-point -b32 -r 48000 -c 2 -q - -t coreaudio "BlackHo" gain -24
# a bit more louder
airspy-fmradion -E100 -t airspyhf -c freq=89700000 -F - | \
sox -t raw -e floating-point -b32 -r 48000 -c 2 -q - -t coreaudio "BlackHo" gain -18
# DO NOT SET TO `gain 0` or as is - level too loud for QuickTime Player recorder

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# Source:
# https://apple.stackexchange.com/a/63477/91991
# Posted by Lri <https://apple.stackexchange.com/users/3936/lri>
# Licensed: CC-BY-SA 3.0

# opening and closing windows and popovers
defaults write -g NSAutomaticWindowAnimationsEnabled -bool false

# smooth scrolling
defaults write -g NSScrollAnimationEnabled -bool false

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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
    <key>Label</key>
    <string>com.wsjtx.sysctl</string>
    <key>Program</key>
    <string>/usr/sbin/sysctl</string>
    <key>ProgramArguments</key>
    <array>

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#!/bin/sh
# References:
# http://zane5-blog.logdown.com/posts/278339-resolve-mac-os-x-illegal-hardware-instruction
# https://www.hsbt.org/diary/20170208.html
brew list | xargs brew reinstall --force-bottle --cleanup

jj1bdx

APRS with airspyhf_rx, csdr, and direwolf

1200bps 144.660MHz

# Choose 11025Hz for the intermediate IF/audio frequency
airspyhf_rx -f 144.66 -a 768000 -r stdout | \
  csdr fir_decimate_cc 69.65986394557823129252 0.005 HAMMING | \
  csdr fmdemod_quadri_cf | csdr limit_ff 0.5 | csdr deemphasis_nfm_ff 11025 | \
  csdr fastagc_ff | csdr limit_ff 0.5 | csdr convert_f_s16 | \

/usr/local/bin/direwolf -c ~/bin/sdr-1200bps.conf -t 0 -T "%FT%TZ" -r 11025 -D 1 -B 1200 -

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Erasing internal mSATA SSD on Intel NUC (DC3217IYE) by powercycling the mSATA SSD

You need to powercycle internal mSATA SSD to perform secure erase, while the NUC is powered on. Here's how to do it:

1. Turn on the NUC power and boot the OS (preferably Linux).
2. Open the bottom cover.
3. Remove the small screw which holds the mSATA SSD board. This will make the board flip up.
4. Carefully remove the SSD board from the mSATA connector.
5. Wait for a few seconds.
6. Carefully insert the SSD board to the mSATA connector.