Generated by All in One SEO v4.9.3, this is an llms.txt file, used by LLMs to index the site. # ON3JT JO21fe61bc ## Sitemaps - [XML Sitemap](https://on3jt.byze.be/sitemap.xml): Contains all public & indexable URLs for this website. ## Posts - [The last High Altitude Balloon this year.](https://on3jt.byze.be/the-last-high-altitude-balloon-this-year) - My attempt to track a small balloon, the last one this year. - [ISS SSTV Transmissions December 2021](https://on3jt.byze.be/iss-sstv-transmissions-december-2021) - Last of 2021 SSTV transmissions from the International Space Station received with an RTL stick - [Mailchimp and SPF records](https://on3jt.byze.be/mailchimp-and-spf-records) - Update your SPF records to avoid Mailchimp newsletters to be marked as spam - [Synology Drive Client sync problem](https://on3jt.byze.be/synology-drive-client-sync-problem) - Synology Drive Client refused to synchronise my Arduino sketches folder. Read the solution here. - [Still alive](https://on3jt.byze.be/still-alive) - [Reception test with radiosonde antenna](https://on3jt.byze.be/reception-test-with-radiosonde-antenna) - First test with the 5/8 wave vertical antenna for tracking weatherballoons (radiosondes). - [Antenna for RadioSonde RX](https://on3jt.byze.be/antenna-for-radiosonde-rx) - First prototype of the 5/8 antenna on 402 MHz to receive radiosondes. - [UBA Spring contest 80M](https://on3jt.byze.be/uba-spring-contest-80m) - One hour of contestfun on the UBA Spring Contest. - [Programming cable for Anytone AT-778uv](https://on3jt.byze.be/programming-cable-for-anytone-at-778uv) - Build your own programming cable for the AnyTone AT 778 uv with a diode, RJ45 plug and a USB-to-TTL device - [First test with RTL-SDR v3 stick](https://on3jt.byze.be/first-test-with-rtl-sdr-v3-stick) - First test with the new RTL-SDR v3 SDR dongle on HF. - [SAQ reception Christmas 2019](https://on3jt.byze.be/saq-reception-christmas-2019) - My attempt to receive the VLF station SAQ on 17,2 kHz. Transmission from december 24th 2019 - [Conditions on VHF](https://on3jt.byze.be/conditions-on-vhf) - There were good conditions on VHF with reception in FT8, SSTV and DAB+ from outside Belgium - [Tiny webcam from broken laptop](https://on3jt.byze.be/tiny-webcam-from-broken-laptop) - Reuse an old camera module from a broken laptop - [HAM radio in the International Space Station](https://on3jt.byze.be/ham-radio-in-the-international-space-station) - HAM radio in the International Space Station - [Ordered a NanoVNA off eBay](https://on3jt.byze.be/ordered-a-nanovna-off-ebay) - Just ordered the NanoVNA, a cheap open source VNA - [First mod on AnyTone AT778uv](https://on3jt.byze.be/first-mod-on-anytone-at778uv) - Today I modded the microphone case of the AnyToneAT778uv to increase the volume of the modulation - [FT8 on 160m this evening](https://on3jt.byze.be/ft8-on-160m-this-evening) - FT8 on 160M this evening is booming - [HAM humor in WSJT-X (wsjt-z mod)](https://on3jt.byze.be/ham-humor-in-wsjt-x) - Someone has added a small funny popup in WSJT-X (wsjt-z mod) - [SPF records part 2, problem solved at UBA.be](https://on3jt.byze.be/spf-records-part-2-problem-solved-at-uba-be) - Why I missed mails from our national radio organisation due to faulty SPF records - [Picked up VLF receiving again](https://on3jt.byze.be/picked-up-vlf-receiving-again) - Setting up the gear to receive the VLF station SAQ on Christmas Eve 2019 - [My homebrew vertical multiband hf antenna](https://on3jt.byze.be/my-homebrew-vertical-multiband-hf-antenna) - A simple and low cost multiband vertical hf antenna covering 5 bands (20m-10m) from an old CB antenna - [FT4, first QSO](https://on3jt.byze.be/ft4-first-qso) - My first FT4 qso on 40M HF with VK7AC - [AWG to metric conversion table](https://on3jt.byze.be/awg-to-metric-conversion-table) - Use this table to convert American Wire Gauge (AWG) to square mm. - [Historical transmission of SAQ on 17,2 kHz](https://on3jt.byze.be/historical-transmission-of-saq-on-172-khz) - Historical transmission of SAQ on 17,2 kHz on july 4th 2004, contains a small MP3 recording - [My first PSK31 qso with Brazil (PY2VA)](https://on3jt.byze.be/my-first-psk31-qso-with-brazil-py2va) - My first PSK31 qso with Brazil (PY2VA) on 20m using my homebuilt vertical antenna. - [Hooray, no spam in here](https://on3jt.byze.be/hooray-no-spam-in-here) - First spam comments are in... - [Putting the multiband HF antenna back in it's original position](https://on3jt.byze.be/putting-the-multiband-hf-antenna-back-in-its-original-position) - The multiband HF antenna fell down during a storm in december 2007. Read how I put it back in it\'s normal position - [CQtube, the YouTube for the Ham Radio Community](https://on3jt.byze.be/cqtube-the-youtube-for-the-ham-radio-community) - CQtube is YouTube lookalike but for ham radio with some nice videos on ham radio - [Sitemap](https://on3jt.byze.be/sitemap) - Sitemap created for ON3JT blog - [Cantenna for the 23cm ATV band](https://on3jt.byze.be/cantenna-for-the-23cm-atv-band) - Cantenna for the 23cm ATV band - [Repair a Diamond X200 VHF/UHF antenna](https://on3jt.byze.be/repair-a-diamond-x200-vhfuhf-antenna) - Attempt to repair the Diamond X200 VHF-UHF antenna faulty capacitors - [CQ from SAQ VLF transmitter july 2007](https://on3jt.byze.be/cq-from-saq-vlf-transmitter-july-2007) - CQ from SAQ VLF transmitter july 2007, including a small YouTube movie - [German NAVY VLF transmitter DHO38](https://on3jt.byze.be/german-navy-vlf-transmitter-dho38) - German NAVY VLF transmitter DHO38 - [SAQ Grimeton reception in 2005](https://on3jt.byze.be/saq-grimeton-reception-in-2005) - SAQ Grimeton reception in 2005 - [Reception of the VLF transmitter SAQ on june 29th 2008](https://on3jt.byze.be/reception-of-the-vlf-transmitter-saq-on-june-29th-2008) - Reception of the VLF transmitter SAQ on june 29th 2008 - [PSK125 qso with Argentina](https://on3jt.byze.be/psk125-qso-with-argentina) - My first PSK125 qso with Argentina on 20m thanks to LU3DXI - [Reception reports for ON0VRT using Google Maps](https://on3jt.byze.be/reception-reports-for-on0vrt-using-google-maps) - Reception reports for the Belgian repeater ON0VRT using Google Maps and a XML file. - [Maritime Mobile ?](https://on3jt.byze.be/maritime-mobile) - The ultimate /MM - [Current projects that needs attention](https://on3jt.byze.be/current-projects-that-needs-attention) - A uncomplete list of ham radio projects that is keeping me off the street :-) - [Barcodes on QSL cards, an idea](https://on3jt.byze.be/barcodes-on-qsl-cards-an-idea) - Make your national qsl service happy, use barcodes on your qsl cards - [QSO with SV1EAG and webcam feedback](https://on3jt.byze.be/qso-with-sv1eag-and-webcam-feedback) - PSK31 qso with SV1EAG with visual feedback via his webcam. - [My favourite tool for listening to webradio's](https://on3jt.byze.be/my-favourite-tool-for-listening-to-webradios) - Little article about the tool Screamerradio for listening to webradio\'s and Bluemars.org - [Short 40m dipole antenna, part 1](https://on3jt.byze.be/short-40m-dipole-antenna-part-1) - Part 1 of the designing and building a shortened 40m dipole antenna - [Short 40m dipole antenna, part 2](https://on3jt.byze.be/short-40m-dipole-antenna-part-2) - Part 2 of the shortened 40m inverted V antenna project : first field test - [BITX20 status](https://on3jt.byze.be/bitx20-status) - Status of my BITX20 project. A simple to build 20m SSB transceiver. - [My first qso into the USA using psk31 on 20m](https://on3jt.byze.be/my-first-qso-into-the-usa-using-psk31-on-20m) - My first qso into the USA using psk31 on 20m with qrp power - [Digital Radio Mondiale reception with a simple setup](https://on3jt.byze.be/digital-radio-mondiale-reception-with-a-simple-setup) - [Programming a PIC processor with a cheap USB to RS232 adapter](https://on3jt.byze.be/programming-a-pic-processor-with-a-cheap-usb-to-rs232-adapter) - I succesfully used a cheap USB to RS232 adapter to programm a PIC on a Velleman kit - [My first 30m WSPR experiments with a strange call showing up](https://on3jt.byze.be/strange-call-detected-on-30m-wspr-modemy-first-30m-wspr-experiments-with-a-strange-call-showing-up) - My first WSPR night on the 30m band receiving IK1RKU and ZX5PIZ - [My WSPR signal reached Australia](https://on3jt.byze.be/my-wspr-signal-reached-australia) - Using only 2 watt on the 30m band to get a signal into Australia using WSPR - [SAQ will be aired again on Christmas Eve](https://on3jt.byze.be/saq-will-be-aired-again-on-christmas-eve) - Like previous years the VLF transmitter SAQ will be aired again with Seasons Greetings - [Bought myself a Christmas gift : a new Diamond W735 40/80m wire antenna](https://on3jt.byze.be/bought-myself-a-christmas-gift-a-new-diamond-w735-4080m-wire-antenna) - I bought me a Diamond W735 HF antenna at a hamfest in Bladel, The Netherlands - [WebSDR from Twente University temporarily with six bands](https://on3jt.byze.be/websdr-from-twente-university-temporarily-with-six-bands) - Now you can temporarily listen to six bands on the WebSDR from Twente University - [Show the data from the DXrobot the way you like](https://on3jt.byze.be/wordpress-dxrobot-widget) - Create you own look and feel for the DX robot data from www.gooddx.net. Or use a Wordpress widget. - [20m band report in WSPR](https://on3jt.byze.be/20m-band-report-in-wspr) - 20m band report in WSPR mode : pretty dead at the moment - [My blog has been visited 10,000 times](https://on3jt.byze.be/my-blog-has-been-visited-10000-times) - Today my blog reached over 10,000 visitors in just 1 year. - [Build a lowcost yagi antenna for PMR446](https://on3jt.byze.be/build-a-lowcost-yagi-antenna-for-pmr446) - Simple and low cost yagi construction for your handheld PMR 446 radio. - [Avoid uncontrolled transmissions with this simple modification on your radio interface](https://on3jt.byze.be/avoid-uncontrolled-transmissions-with-this-simple-modification-on-your-radio-interface) - Use a simple switch in your computer to transceiver interface to avoid uncontrolled transmissions. - [Upgraded my blog](https://on3jt.byze.be/upgraded-my-blog) - The automatic update feature of Wordpress failed when I tried upgrading. Time for some manual labour.. - [Build a simple magnetic loop antenna.](https://on3jt.byze.be/build-a-simple-magnetic-loop-antenna) - Pictures from my homebuilt magnetic loop antenna using DIY hardware and junkbox parts. - [I'm still alive and kicking sometimes](https://on3jt.byze.be/im-still-alive-and-kicking-sometimes) - A brief history of the past 8 months without any blog post. - [Designing and building a Manned Beacon or MEPT, part 1 of many](https://on3jt.byze.be/designing-and-building-a-manned-beacon-or-mept-part-1-of-many) - A series of articles on building a super lowcost and lowpower Manned Experimental Propagation Transmitter or beacond using the LTC1799 - [Lacie Network Space 2 in my network and how to connect to it](https://on3jt.byze.be/lacie-network-space-2-in-my-network-and-how-to-connect-to-it) - A custom made script to map the Lacie Network Space 2 to drive letters everytime the computer is started. - [My 20m end fed or half wave vertical antenna](https://on3jt.byze.be/my-20m-end-fed-or-half-wave-vertical-antenna) - Construction of my 20m vertical half wave antenna. - [I've been hacked by Ghost61](https://on3jt.byze.be/ive-been-hacked-by-ghost61) - Small explanation of what has happened to my site. - [SAQ transmission of 9:00 UTC on July 3, 2011](https://on3jt.byze.be/saq-transmission-of-900-utc-on-july-3-2011) - [RTTY sound in movies](https://on3jt.byze.be/rtty-sound-in-movies) - Wireless communication sound in shows and movies is the well known rtty sound - [The bandplan on 40m](https://on3jt.byze.be/the-bandplan-on-40m) - Just learned today that the 40m bandplan has changed a while ago when I was trying a psk31 qso and had some qrm of a cw signal. - [And there will be snow](https://on3jt.byze.be/and-there-will-be-snow) - Some winter pictures from the garden and antennas when there was 10 cm of snow. - [A new receiver for me : SDR Ensemble RX II](https://on3jt.byze.be/a-new-receiver-for-me-sdr-ensemble-rx-ii) - Building my new Software Designed Radio kit for the shortwave bands - [My personal best dx using wspr](https://on3jt.byze.be/my-personal-best-dx-using-wspr) - My best wspr reports on 80 / 40 / 30 and 20m using a modest setup. - [VLF transmission of SAQ on 12:00 UTC on July 3th 2011](https://on3jt.byze.be/vlf-transmission-of-saq-on-1200-utc-on-july-3th-2011) - Second reception of SAQ on VLF. ## Pages - [About ON3JT](https://on3jt.byze.be/about) - Some words about ON3JT Joost Luyten - [APRS Tracker](https://on3jt.byze.be/aprs) - Build my own tracker with an Arduino Nano, u-blox GPS receiver and a few components - [Archive](https://on3jt.byze.be/archive) - All the articles published on this site bundled in one page for an easy overview. - [Shack](https://on3jt.byze.be/shack) - Almost complete shack description from ON3JT - [Online logbook](https://on3jt.byze.be/online-logbook) - HRD online logbook from ON3JT ## Categories - [Other](https://on3jt.byze.be/category/other) - [Projects](https://on3jt.byze.be/category/projects) - [VLF](https://on3jt.byze.be/category/vlf) - [Antennas](https://on3jt.byze.be/category/antennas) - [SAQ Grimeton](https://on3jt.byze.be/category/saq-grimeton) - [Ham Radio](https://on3jt.byze.be/category/ham-radio) - [Digital Mode](https://on3jt.byze.be/category/digital-mode) - [WSPR](https://on3jt.byze.be/category/digital-mode/wspr) - [Programming](https://on3jt.byze.be/category/programming) - [PHP](https://on3jt.byze.be/category/programming/php) - [kit](https://on3jt.byze.be/category/kit) - [Networking](https://on3jt.byze.be/category/networking) - [SDR](https://on3jt.byze.be/category/sdr) - [Contest](https://on3jt.byze.be/category/contest) - [RadioSonde](https://on3jt.byze.be/category/radiosonde) - [IT](https://on3jt.byze.be/category/it) - [Sat](https://on3jt.byze.be/category/ham-radio/sat) - [HAB](https://on3jt.byze.be/category/ham-radio/hab) ## Tags - [Diamond](https://on3jt.byze.be/tag/diamond) - [X200](https://on3jt.byze.be/tag/x200) - [VHF](https://on3jt.byze.be/tag/vhf) - [UHF](https://on3jt.byze.be/tag/uhf) - [antenna](https://on3jt.byze.be/tag/antenna) - [cantenna](https://on3jt.byze.be/tag/cantenna) - [shf](https://on3jt.byze.be/tag/shf) - [atv](https://on3jt.byze.be/tag/atv) - [ISS](https://on3jt.byze.be/tag/iss) - [Steve McArthur](https://on3jt.byze.be/tag/steve-mcarthur) - [SAQ](https://on3jt.byze.be/tag/saq) - [Grimeton](https://on3jt.byze.be/tag/grimeton) - [Datong](https://on3jt.byze.be/tag/datong) - [23cm](https://on3jt.byze.be/tag/23cm) - [wifi](https://on3jt.byze.be/tag/wifi) - [ON0MTV](https://on3jt.byze.be/tag/on0mtv) - [dho38](https://on3jt.byze.be/tag/dho38) - [navy](https://on3jt.byze.be/tag/navy) - [sitemap](https://on3jt.byze.be/tag/sitemap) - [CQtube](https://on3jt.byze.be/tag/cqtube) - [YouTube](https://on3jt.byze.be/tag/youtube) - [video](https://on3jt.byze.be/tag/video) - [HF multiband vertical antenna](https://on3jt.byze.be/tag/hf-multiband-vertical-antenna) - [PSK31 20m PY2VA](https://on3jt.byze.be/tag/psk31-20m-py2va) - [PSK125 Argentina LU3DXI 20m](https://on3jt.byze.be/tag/psk125-argentina-lu3dxi-20m) - [ON0VRT google maps](https://on3jt.byze.be/tag/on0vrt-google-maps) - [bitx20](https://on3jt.byze.be/tag/bitx20) - [inverted V](https://on3jt.byze.be/tag/inverted-v) - [USS Wright](https://on3jt.byze.be/tag/uss-wright) - [Maritime Mobile](https://on3jt.byze.be/tag/maritime-mobile) - [barcode](https://on3jt.byze.be/tag/barcode) - [qsl cards](https://on3jt.byze.be/tag/qsl-cards) - [AWG](https://on3jt.byze.be/tag/awg) - [American Wire Gauge](https://on3jt.byze.be/tag/american-wire-gauge) - [metric](https://on3jt.byze.be/tag/metric) - [conversion](https://on3jt.byze.be/tag/conversion) - [40m](https://on3jt.byze.be/tag/40m) - [dipole](https://on3jt.byze.be/tag/dipole) - [short](https://on3jt.byze.be/tag/short) - [Cobwebb](https://on3jt.byze.be/tag/cobwebb) - [fan dipole](https://on3jt.byze.be/tag/fan-dipole) - [hf](https://on3jt.byze.be/tag/hf) - [vertical](https://on3jt.byze.be/tag/vertical) - [bleumars.org](https://on3jt.byze.be/tag/bleumarsorg) - [music](https://on3jt.byze.be/tag/music) - [streaming](https://on3jt.byze.be/tag/streaming) - [webradio](https://on3jt.byze.be/tag/webradio) - [K7MEM](https://on3jt.byze.be/tag/k7mem) - [short antenna](https://on3jt.byze.be/tag/short-antenna) - [ICOM 725](https://on3jt.byze.be/tag/icom-725) - [DRM](https://on3jt.byze.be/tag/drm) - [Shortwave](https://on3jt.byze.be/tag/shortwave) - [MP3](https://on3jt.byze.be/tag/mp3) - [Digital Radio](https://on3jt.byze.be/tag/digital-radio) - [PIC](https://on3jt.byze.be/tag/pic) - [microcontroller](https://on3jt.byze.be/tag/microcontroller) - [microprocessor](https://on3jt.byze.be/tag/microprocessor) - [MikroBasic](https://on3jt.byze.be/tag/mikrobasic) - [usb to rs232](https://on3jt.byze.be/tag/usb-to-rs232) - [programmer](https://on3jt.byze.be/tag/programmer) - [Velleman](https://on3jt.byze.be/tag/velleman) - [30m](https://on3jt.byze.be/tag/30m) - [australia](https://on3jt.byze.be/tag/australia) - [diamond W735](https://on3jt.byze.be/tag/diamond-w735) - [dual band](https://on3jt.byze.be/tag/dual-band) - [SDR](https://on3jt.byze.be/tag/sdr) - [WebSDR](https://on3jt.byze.be/tag/websdr) - [online](https://on3jt.byze.be/tag/online) - [radio](https://on3jt.byze.be/tag/radio) - [DXrobot](https://on3jt.byze.be/tag/dxrobot) - [propagation](https://on3jt.byze.be/tag/propagation) - [wordpress](https://on3jt.byze.be/tag/wordpress) - [widget](https://on3jt.byze.be/tag/widget) - [Google Analytics](https://on3jt.byze.be/tag/google-analytics) - [visitors](https://on3jt.byze.be/tag/visitors) - [blog](https://on3jt.byze.be/tag/blog) - [computer](https://on3jt.byze.be/tag/computer) - [interface](https://on3jt.byze.be/tag/interface) - [transmission](https://on3jt.byze.be/tag/transmission) - [pmr](https://on3jt.byze.be/tag/pmr) - [446](https://on3jt.byze.be/tag/446) - [yagi](https://on3jt.byze.be/tag/yagi) - [magnetic loop antenna](https://on3jt.byze.be/tag/magnetic-loop-antenna) - [house](https://on3jt.byze.be/tag/house) - [20m end fed](https://on3jt.byze.be/tag/20m-end-fed) - [half wave](https://on3jt.byze.be/tag/half-wave) - [Projects](https://on3jt.byze.be/tag/projects) - [VLF](https://on3jt.byze.be/tag/vlf) - [Ham Radio](https://on3jt.byze.be/tag/ham-radio) - [WSPR](https://on3jt.byze.be/tag/wspr) - [PHP](https://on3jt.byze.be/tag/php) - [synology](https://on3jt.byze.be/tag/synology) - [drive client](https://on3jt.byze.be/tag/drive-client) - [Arduino](https://on3jt.byze.be/tag/arduino)