What a lovely #thunderstorm at this moment. But I need some #sleep too #weather #lighting #thunderstorms #thunder

Today I was airborne with a Cessna 150 from Budel #airport and took a #Meshcore repeater in the air. Coverage on 2800 ft was good, I received several reports. #hamradio #hamr #AmateurRadio #antenna #UHF #airplane #aviation

No thunderstorms, no hail, no rain here. So not the spectacular clouds I was hoping for. But around sunset, I could make this pictures. Working with Kase CPL and ND filters. #weather #clouds #thunderstorms #TheBlueHour #sunset

Hey, ham radio ops! Listen for me operating W1AW/KL7 CW on 17m 18-20z and 20m 22-00z.

I was qrv in the wpx cw contest until I had to go for a barbecue. Can I combine both activities? #hamradio #hamr #AmateurRadio #contest #barbecue #cw #morse

Our ATV repeater PI6EHV has now got an input via hamnet. I just made this PM5544 testcard and the stream via OBS works good. You can find PI6EHV also in twitch as a livestream. #hamradio #hamr #AmateurRadio #television #ATV #repeater #PM5544 #HAMNET #Eindhoven #antenna

I just returned from a /p operation in the nearby park (no #POTA yet). Everything fits in this #camera bag and #antenna in this tent bag. Best #QSO was with M5EEE who was POTA with 5w in vertical also. #hamradio #hamr #AmateurRadio #park #CW #QRP #SOTA #portable #20m #HF

These are some homemade Kelvin test leads to eliminate measurement errors from wire and contact resistance. See the Voltlog website for kit and more information. #hamradio #hamr #AmateurRadio #measurement #DIY

So moved to another place. Testing some antennas and making a few QSOs on 20m and 17m. #hamradio #hamr #AmateurRadio #CW #shortwave

Hmmm... indeed no QRM at this location on HF but every seven minutes, a LF QRM source makes CW a little bit difficult... #hamradio #hamr #AmateurRadio #antenna #shortwave #QRM

A sunny day, far away from any QRM source, next to a pond and a lot of space. This is the perfect place for some portable HF operation. Or ... maybe not ... ?? #hamradio #hamr #AmateurRadio #antenna #HF #CW #portable #QRM

Some days off so time to finish some "unfinished projects" Like this power supply for websdr radios, meshcore transceivers and accessories. #hamradio #hamr #AmateurRadio #websdr #antenna #SDR #shortwave

After years of QRM on 80m (s9+30, which made that band useless) the source has gone! So lets celebrate with a good Belgian beer and make some QSOs. #hamradio #hamr #RadioAmateur #radio #QRM #beer #triple #weekend #CW #interference #HF #party #morse #contest

The weather was good but propagation poor. I did visit PA6KDM on mills day for Mills On The Air. And a beer afterwards. #hamradio #hamr #AmateurRadio #mill #HF #antenna #beer #antenna

Sunny, 21 degrees and no wind. Perfect conditions to test "Doomsday Radio". We all know that Doomsday will be at perfect weather 😁 #QMX 4w RF in full-size vertical for 10-20m (telescopic whip). #hamradio #hamr #AmateurRadio #prepping #emergency #HF #CW #morse #Shortwave #QRP

Just received 2x baofeng UV-5R mini with upgraded hardware. Both FM and AM receive is much better. See compare between V1.0 (left) and V1.7 (right) on the movie. #hamradio #hamr #AmateurRadio #handheld #hardware #Baofeng #aircraft #airport #aviation

This was "measured" with a 10 dollar AliExpress EMF meter on a roof. Over 1900V/m. The real measured value with a calibrated Narda was less than 2V/m. #hamradio #hamr #AmateurRadio #antenna #EMF #cheap #calibration #measurement #EMF

On a roof for #5G modernization and we found "unknown antennas". These are probably the ones of ATV #repeater PI6HVS in Hilversum. On #70cm, #23cm, #13cm and #3cm #hamradio #hamr #AmateurRadio #ATV #television #hamnet #UHF #SHF

Lins, PA3CMC, just sent me some pictures of his #dx #expedition to #Zambia He and 3 other ham are active via the #moon on #6m #2m #70cm #23cm #hamradio #hamr #AmateurRadio #moonbounce #Africa #antenna

Weekend! Already an hour in the pileup of S21WD on 40m cw and... I can handle it 😁 #hamradio #hamr #AmateurRasio #weekend #beer #triple #DX #cw #morse #shortwave #Friday #Begali

Your phone can be a useful tool to check fuses. #hamradio #hamr #AmateurRadio #electronic #DIY #repair #troubleshooting #fuse #phone #tool

On site to make some modifications on the #mediumwave TX #antenna at 747 kHz Also #hamnet at #FM repeaters on 2m 70cm and 23cm. #hamradio #hamr #AmateurRadio #radio #broadcast #Eindhoven #VHF #UHF #dish #transmission #5GHz

And I promised her not to start another collection..... #hamradio #hamr #AmateurRadio #RadioAmateur #Radio #CW #CW4EVER #morse #key #collection

J51A What a great #expedition and first class operators ! They ears heard me so I was able to get J5 in the log from 80m till 10m in #CW #hamradio #hamr #AmateurRadio #DX #GuineaBissau #shortwave #morse

Installed a fan tower and special case for cooling my web888 #websdr but after 60min already 45C in a 18C room. I have to find an better solution. Fan is running at 12v at highest speed. #hamradio #hamr #AmateurRadio #cool #temperature #radio

Pileup of 3Y0K Bouvet is now on 20m and is 34 kHz wide. The UP police is also very active. #hamradio #hamr #AmateurRadio #Bouvet #DX

My 2nd #kiwisdr in now on air. This is a v2 running next to the version 1. V1: pe1rdp.no-ip.org:8073 V2: pe1rdp.proxy.kiwisdr.com Both running on a wellgood preamp and wellbrook loop. #hamradio #hamr #AmateurRadio #HF #SDR #radio #antenna

So I took a #vacuum #cleaner #filter to prevent getting dust into the #websdr But, this blocks the airflow too much and #temperature is now 43 degrees already. Back to the drawing table. Maybe this heatsink will help? #hamradio #hamr #AmateurRadio #CPU #fan #Web888

Turning the fan of the #Web888 was a success. #temperature drops from 42 to 37 degrees in a 18 degrees room. But now the fan is blowing dust into the #websdr Will this #filter be a good solution? #hamradio #hamr #AmateurRadio #radio #dust #radio #DIY

The #fan of the web888 #websdr makes too much noise but I found a Sunon maglev 40x40x10 in the junkbox. This fits perfectly in the web888 and the fan grille protects my fingers also. Now skimming #FT8 to monitor propagation for ARRL #cw #contest #hamradio #hamr #AmateurRadio

QRV in PACC #contest during spare time. Also helped building this 80m vertical #antenna at the station PI4KAR. #hamradio #hamr #AmateurRadio #HF #Netherlands

Arrghhh! One earphone pad of my Arlan Radiosport broke and the silicone drips out. Spare is available for 50 UK pounds! But this AliExpress works fine: 5 euro for 2 cups. Also made cable mod to mini XLR. #hamradio #hamr #AmateurRadio #contest #headphone #spare #CW #mod

Enjoying a full QRM free environment. Temperature 12 degrees, sunny and sitting in the forest with my #Belka #HF #receiver listening to #CW signals on 10m. Report 519. Lovely. #hamradio #hamr #AmateurRadio #interference #nature #shortwave #antenna #forest #spring #sun

Doing some experiments with #meshcore on #433MHz A drive test shows very good results. Heltec v3 as companion and lily as repeater. At 2km distance still 10dB report. #hamradio #hamr #AmateurRadio #antenna #UHF #70cm #meshtastic #prepping

Can the Best Firmware even be better? Yes, it can! Now direct frequency entry has been added. Also, there is a 5 hour bandscope available. #hamradio #hamr #AmateurRadio #firmware #SI4732 #prepping #antenna #shortwave #FM

This morning I was in a 42m high #church in #Zeist and with this 20dBm #meshcore #transceiver I was able to reach the #repeater in #Almere easily. Distance is 40km. #hamradio #hamr #AmateurRadio #antenna #prepping #Emergency #tower #Meshtastic #mesh

This article is today on the SVR website, a Swedish TV station. Callsign is SM5DGX. svt.se/nyheter/lokalt…#hamradioi#hamrm#AmateurRadioi#EMEM#Swedene#antennan#moono#Moonbouncec#televisionon

It is so fascinating to see #RTTY decoding on this little SI4732 ESP32 #radio Station is Pinneberg DDH9 #weather on 10100 kHz. New #firmware also includes EiBi import via USB #hamradio #hamr #AmateurRadio #prepping #emergency #antenna #decoder #ship #receiver #shortwave #maritime

Doing some radio experiments with #meshcore on #868MHz Transceiver is Heltec v4 and #antenna a 8dBi vertical. Just placed this #repeater in the mast. #hamradio #hamr #AmateurRadio #prep #EmergencyResponse

QRV in cq ww cw contest. At Saturday under callcall pi4kar. #hamradio #hamr #AmateurRasio #amateur #radio #antenna #HF #contest #cw #morse #weekend #Saturday #Sunday

QRV in cqww cw contest. This morning from clubstation PI4KAR and now from home. #hamradio #hamr #AmateurRadio #contest #cw #morse #HF

Connected a BME280 sensor to the #Meshcore transceiver Heltec V4. SDA goes to GPIO 17 SCL goes to GPIO 18 Vcc = 3.3v Needs some calibration 😄 #hamradio #hamr #AmateurRadio #868MHz #prepping #Weather #temperature #pressure #humidity

Playing again with 868MHz #meshcore #mesh network. The #swr plot of the stock #antenna of my Heltec t114 and a few-minutes-build GP. #hamradio #hamr #AmateurRadio #measurement #DIY

Local #interference makes #reception below 5 MHz impossible. But this solution with a miniwhip #antenna and mixing this signal out of phase, the #QRM is almost gone. #hamradio #hamr #AmateurRadio #residential #solution #HF #shortwave

March 3th 1980, it was legal to use #CB #radio in the #Netherlands. In the first weeks, more than 300000 licences were sold but only 22 channels were available. The result: very crowded channels. Hear the mess of #channel 14. #hamradio #hamr #AmateurRadio #antenna #FM

#testing the #waterfall #display Can be activated at backlight 32 or 33 and use ETM mode. By turning and pressing the #VFO button you can enter the #station showed on the waterfall. #hamradio #hamr #AmateurRadio #radio #SI4732 #antenna #SDR #firmware

With this mod, you will have a #RTTY #decoder New is the terminal #display to have a larger read back window. #conditions are bad today but here is a small #demo with Pinneberg #weather #station #hamradio #hamr #AmateurRadio #antenna #tadio #SI4732 #WX #HF #shortwave

Two weeks ago, during #JOTA , someone was really impressed by the #SI4732 #mini #radio so I give my device to him. I bought a new one (V3) and the #hardware #mod for #RTTY decoder is already made. Playtime. #hamradio #hamr #AmateurRadio #YOUTH #scouting

QRV as PI6SBW/J at the #JOTA #JOTI 2025 Giving the #children a great #weekend #hamradio #hamr #AmateurRadio #scouting #Eindhoven #antenna #children #volunteer #volunteering #transceiver

During the UHF and up #contest we made some QSO on 122 GHz (wavelength is 2.5mm) between #Netherlands and #Germany RF power was only 0.5 mW (-3dBm) in FM F3E. #QTH is JO21XC Also #10GHz experiments #hamradio #hamr #AmateurRadio #radio #SHF #122GHz #antenna #Microwave #dish