JOTA 2017

This year I will tell my story of the JOTA 2017:
Sadly I lost all my photos due to a corrupt SD card. So no pictures this year.

Monday 16th October 2017

Monday evening, when I finished my work in Delft, I rushed back home, eating my diner really quick and back on the road to Rijen (small village next to Breda, south of Holland). To bring my antenna’s and cables, so that the scouts can start with erecting a 16 meter mast with in the top my Diamond X50 and a 25 meter HF longwire. Which will be installed as sloper. While I was there, why not helping with the JOTI? Together with a big team, we placed, connected and installed 1 server, 5 switches, 30 computers (desktop, screen, keyboard, mouse, headset) and many kilometers of network/power and other cables. See the timelapse.

(the man with the blue/light blue striped shirt, that’s me 😉 ) Read more


For the third time this year, I’ll take my Gobox on a fieldday today (Wednesday 27 September 2017). It will be a perfect day for this little outing. Not too hot or too cold, and most important, no rain!

I like planning ahead. So I search on Google Maps for a suitable place. And I found one. After packing the car I set off to go to….  West Maassluis. Maassluis is a small village within 20km from my home. (see image below).

Peter (PD2GOG) was interested to see my gobox in action, so he meets me at the chosen field. After packing my trolly (a fishing cart, see the first image of the gallery below), we walked to the site. Just a couple of minutes walking we got there. First inspecting the field, is it really possible there? And yes it was!!

When everything was ready, including starting my generator, I switched on the power to the gobox. Why is that so exciting? Well, I totally rebuild the gobox. I had some power issues, losing power to the Icom while it was (or would like to) transmitting. (I will write an article about this and the complete rebuild). But everything was working as planned.

And then…. I would start making some qso’s on 2m and 70cm. But no respond, ehmm.. is there something wrong? When Peter left, we make some contacts when he was back at his car and also one when he was driving near Vlaardingen (app. 10km).  So it was working! I think that my dual antenna (Slim Jim) was too low for a good 2m qso.

Then I switched over to HF (Icom 706mkII), because I love the digi-modes (PSK/RTTY, etc) I connected my laptop to the radio. My antenna (Buddipole) was set up for 20m. On 14.070MHz I soon saw (on screen) some qso’s going. Then someone (a Finn named Unto, OH6XB) was calling cq, I direct response to that. Doing that I noticed that my power output was low, just 2W instead of the 25W. But I was heard and Unto was coming back for me. So this was also a first for me, 2w PSK, that’s QRP, wow!! That’s was the only station how had heard me (or at least respond). After some setting tweaking, the radio was now on the 25W. I made many qso’s after that. The furthest station was in Asiatic Russia (4500km away).

After spending over 4 hours there, it was time to go home again. I must be quick or else I get stuck in the rush hour… Which I did 🙁

It was really nice to do this. And a promised me to do this more often.

A short impression of the day:


PACC 2017

At first I wouldn’t take part in the Dutch pacc. But days before the contest, I was already active making my station ready for it. Saturday 12:00 UTC (14:00 local time) the contest was started. And also I was ready and started. In the first few minutes I made some qso’s after giving cq. After this I only answered other calls. This isn’t very productive but it trains me to listen more carefully to the available signals. Which isn’t still easy for me. For those how doesn’t know, and I’ve some hearing disability. I can hear way better with my hearing aid. But HF sounds (especially those very weak signals) are very heard to hear and to determine if it is a radio amateur or nothing. And these contests are also good to train this.

The Saturday I worked “just” 12 stations on 5 bands (10, 20, 15, 40). 

The Sunday I worked an other 15 stations which included two new dxcc (country’s). Luxembourg and Ireland. Very nice! 

Just after the contest (which was finished at 12:00 UTC on Sunday). I started calculating my score. I’m not using contest software. When I started contesting I did. But soon, I discovered that this wasn’t a convincing way of logging (although for me). Maybe it’s easy for the contest. But not when you store your QSO’s in Ham Radio Deluxe (HRD). Which I use as main logging and control software for my station. I haven’t found that application that will work with HRD and is doing the calculations for me.

After most contests I made some manual calculations to see my score and also to see how many multiplexer (this is a country, province, club, etc which will multiple the value) I worked. But that’s also not the best way to do it. So I started writing my own software, what will do exactly what I want!

In just 1 hour after the contest I already had a working prototype. Which calculated my score and multiplexers. And that directly read from the HRD  database. So it reads near realtime the qso’s and and shows me the score and multiplexers. I’m happy with it. But now comes the big challenge. Every contest is different (another way of scoring, other multiplexers, etc)

So I need to adjust it a bit so it would be easy to apply new contestrulesto the software so it will work with every contest.

I will call this work in progress.


A new project: making an etching tank

The making of my own PCB’s is getting better and better. But etching them takes a lot of time. So I want to speed up the etching process. I watched a lot of etching video on Youtube and searched for other information. To see how other do that and what kind of equipment they use.

Soon I discovered that using an etching tank have great benefits. Such as speeding up the etch process itself. So I decided to make one myself. Buying one is too expensive and too easy, I also want to learn something.

My etching tank must contain (at least) 1 liter of sodium persulfate, a heating element and an air pump to keep the fluid moving, which speeds up the etching. Why a heating element? Well for the best result, the etching fluid must be 40-50 degrees Celsius.

Finding the right heating element wasn’t easy. A normal element for a fish tank wasn’t suitable because they aren’t warm enough. They are heating till 32 degrees Celsius (because the fishes are cooked 😉 ). In the end, I did found an element which fulfilled my needs. I ordered one via Ebay, and in just a couple of days, it arrived. This element is for 12v and is capable of delivering 80w of heat. Which should be enough for heating till 80 degree Celsius.

In my very first vlog, you will see this element working.

The plan is to make a circuit, which will measure the temperature of the fluid and switch the element on and off. But also controlling the bubble flow.

To be continued!

First real use of the GoBox

Since some time I’m working on my mobile setup (GoBox). After some setbacks, I finally finished it mid-August 2016. However such project is never finished.

img_040813th September 2016, I was on a short break and I took the complete setup with me (see the picture on the left). And get it ready for use.

My short break was the north of the Netherlands where it is a lot quieter and has a rural character with large open fields and located close to the Wadden Sea. Which is a preserved nature area. The level of interference (QRM) was significantly less. So much less, that I began to doubt whether my radio was in good working order.

It was quiet although it was beside a road. However, this road wasn’t very busy. In the time I was there (nearly 4 hours), I saw maybe 10 to 12 cars.

When I reached this place (at 11 o’clock), the temperature was already 26C (78F). And this only rises during the day. And of course, I forgot every possible sun blocking method available. Well, say for yourself, mid-September, 26C, in the Netherlands……

Full setup

The highest temperature I saw that day was 33 degrees Celsius (91F) in the shade of my GoBox. But this was the real test if everything would survive!

After and 30 minutes, the whole setup was up and running. Including my generator which provides me of the 230v to run my laptop and GoBox.

I recently bought the Buddipole, this was also its first use. I had some trouble getting the Buddipole to work. Not because it wasn’t any good. But it was an operator error. I didn’t get any good SWR readings. Everything I did turns out even worse than it was before. Finally, I start reading the manual (I did read it at home, but forgotten the important bit) and quickly discovered that one simple cable was connected wrong. After that, it works like a charm. I change many time from band, without any problem.
I should invest in a good SWR meter, this will help me a lot.

I also get my endfed antenna out, that worked without any adjusting! But the only problem I had with it, was that I didn’t have a high tree or something like that. I hang one end to the Buddipole and the other end to a hay bale, so I created a sloper.

I still made 43 QSO’s, which were 39 digital (psk and rtty).

So a successful day, The whole setup needs some tweaks to getting it better.





Druk, druk en druk

Mijn laatste bericht
dateert alweer van oktober 2015. In de tussenliggende tijd is er veel gebeurd binnen mijn radiohobby. In de komende tijd zal ik een aantal nieuwe posts over de volgende onderwerpen te maken:

  • JOTA 2015
  • diverse contests
  • De (bijna) voltooiing van mijn gobox
  • Ontwerpen en etsen van mijn eigen printplaten
  • VERON werkzaamheden

JOTA 2015 – vrijdag 16 en zaterdag 17 october 2015
IMG_20151016_181020Tijdens deze editie van de JOTA was ik wederom te gast bij Scouting Rijen. Dit jaar kwam ik al op donderdagavond. Zodat we vrijdagochtend meteen konden starten met het opbouwen van het JOTA radiostation (JOTA = Jamboree On The Air).IMG_20151014_210638

Niet alles ging even makkelijk. Helaas is er een tuidraad losgekomen en dat resulteerde ineens dat ik in plaats van verticaal plots horizontaal gepolariseerd was. Dit was natuurlijk niet de bedoeling. IMG_20151018_152126Samen met twee extra scouts hebben snel een andere mast neergezet, hierdoor konden we snel on air zijn. Net voordat het event begon.

Op de zaterdag heb ik veel verteld en laten zien over de radiohobby. Ik heb gepoogd iedere groep die bij me kwam ook een radioverbinding te laten maken. Bij sommige ging dit beter dan bij andere.

Kortom ik heb weer genoten van de JOTA. En het leuke is, dat ik dat dit jaar (2016) gewoon weer opnieuw mag doen. Ik zou zeggen, tot oktober!


JOTA 2015

logo jota 2015Ieder jaar wordt de JOTA-JOTI gehouden. JOTA-JOTI staat voor Jamboree On The Air (of Internet).

Vorig jaar (2014) was mijn eerste keer dat actief meegedaan heb met de JOTA.

Dit jaar zal ik wederom actief zijn bij de St. Bonifaasgroep in Rijen. En wel 16, 17 en 18 oktober 2015.

Het JOTA-station zal ik (samen met een aantal scouts) vrijdagoverdag opbouwen en dan vrijdagavond live gaan met het station als PH7GIS/J.

Vorig jaar heb ik er enorm van genoten en erg leuk om te doen.

JOTA 2014, hier heb ik net verbinding gelegd met PA3WSK/J

JOTA 2014, hier heb ik net verbinding gelegd met PA3WSK/J


Russische Radio RTTY wedstrijd

Russian Radio RTTY Contest 2015

Datum zaterdag 5 september 2015
Tijd van 12:00 tot 24:00 UTC
(02:00 – 02:00 GMT +2)
Wedstrijd en reglement

Om 2:00 uur ‘s nachts (of 12:00 UTC) begon de wedstrijd. Nu was dat voor mij wat te vroeg. Maar ik ben wel om 08:30 begonnen. En heb me goed vermaakt. Vrijdagavond heb ik alles in gereedheid gebracht. De logsoftware (N1MM Logger+) geĂźpdatet naar de laatste versie incl. alle benodigde updates, binnen gehaald. Verder alle instellingen van de radio nagelopen en meteen gecheckt of de antennes correct functioneren. Dat laatste was geen verrassing dat dat nog goed werkte want ik gebruik het immers redelijk vaak. Maar je weet maar nooit.

Read more

Website vertaling

Omdat ik als radioamateur een wereldwijd publiek kan hebben. Kan mijn website vanaf nu automatisch vertaald worden. Selecteer hiervoor Engels, onder aan elk bericht of pagina.

Ik heb geen controle over hoe de vertaling gedaan wordt. De Engelse en Duitse vertaling heb ik bekeken en die zagen er redelijk tot goed uit.


As a radioamateur, the world could be my audience. Because of this my website could be automatically be translated. Select English at the bottom of each post or page.

I have no control over how the translation is done. The English translation looked fine to me. The grammer is not that great.
If you do encounter something that is not obvious (partly due to the translation). Please do not hesitate to contact me.

Mobiel station onder constructie

Tijdens de diverse radiorondes maar ook als ik amateurs persoonlijk spreek hebben ze het wel eens over dat zij hun station meenemen het veld in. Ik dacht dat wil ik ook wel eens proberen. Dus heb ik mijn radio, antennes, enz mee genomen en heb een plekje gevonden en heb de boel opgesteld. En inderdaad, je kunt er leuke verbindingen maken, de omstandigheden zijn geheel anders dan thuis. Daar (nabij Hoek van Holland) had ik weinig last van storing zoals liftmotoren (iets waar ik me thuis vreselijk aan loop te irriteren!), LED lantaarnpalen, enz. Daar heb ik dan ook mooie verbindingen gemaakt. Helaas ben ik toen vergeten schrijfgerei mee te nemen. En heb daardoor de stations niet kunnen loggen 🙁 Dat is dus een leerpuntje voor de volgende keer.

Toen ben ik eens gaan zoeken op Youtube hoe andere amateurs dat eigenlijk doen, want iedere keer al die spullen meenemen is niet echt een lekker werkje. Al gauw vond ik een aantal Amerikanen die een “GoBox” gebouwd hadden. Dit is (grof gezegd) een doos, waar al de nodige spullen inzit.

Na enig onderzoek heb ik besloten ook zo’n GoBox te maken. IMG_20150626_230455Na wat berekeningen (radiotechnisch, als ook financieel) gemaakt te hebben, ben ik tot een ontwerp gekomen. (zie mijn schetsje). Deze GoBox wilde ik ook los van het lichtnet kunnen gebruiken, vandaar het gebruik van een accu.

Toen ik eenmaal helder had hoe de GoBox eruit moest komen te zien. En dat ik wist wat ik moest aanschaffen. Ben ik gaan bestellen. Na bijna alles te hebben ontvangen. Ben ik vorige week (week 25 van 2015) gestart met de GoBox.

De GoBox is bijna klaar voor gebruik. Er zijn nog een aantal zaken die ik moet afronden. Dat is bijvoorbeeld alle aansluitingen maken.

Maar ook het bouwen van een 2m/70cm dual antenne. IMG_20150626_233042Voor HF wil ik een Endfed gaan gebruiken, die ik vertikaal op hang aan een 12,5 lange telescoop mast. Voor 2m en 70cm had ik nog geen mobiele antenne. Toen had ik dus het plan opgepakt om een dual antenne te bouwen naar een ontwerp van een andere amateur. Maar daar over later meer. Wordt Vervolgd!

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