PE4KH Amateur radio - Koos van den Hout

Most recent QSO's for PE4KH

Callsign Band Mode Locator RST(R) RST(S)

I passed my novice radio amateur exam in March 2013 and I registered the callsign PD4KH (pappa delta four kilo hotel!). I passed my full radio amateur exam in March 2016 and I registered the callsign PE4KH (pappa echo four kilo hotel!).
PE4KH on
PE4KH on

I am usually located around maidenhead locator: JO22NC

QSL policy for PE4KH

I upload logs to during and after being active on the radio. I upload logs to ARRL Logbook of the World, on a regular basis. I like paper cards via the QSL bureau so I send those out and I will respond when I receive those. Notifying me via e-mail that you would like a card is also possible.

I appreciate SWL reports for QSOs.

gallery of eQSL cards received by PD4KH and PE4KH.


Antenna rotor project
Amateur Satellites
D-Star digitale amateur radio (Nederlands)


Recent contact (QSO) map for PE4KH embedded using google maps
Mapped HF contacts by PE4KH gridsquares contacted (red) and confirmed (blue)
Mapped 10M contacts by PE4KH gridsquares contacted (red) and confirmed (blue)
Mapped 15M contacts by PE4KH gridsquares contacted (red) and confirmed (blue)
Mapped 20M contacts by PE4KH gridsquares contacted (red) and confirmed (blue)
Mapped 30M contacts by PE4KH gridsquares contacted (red) and confirmed (blue)
Mapped 40M contacts by PE4KH gridsquares contacted (red) and confirmed (blue)

The 'hamradio' items from my homepage

2016-10-17 Jamboree On The Air 2016 (JOTA)
Afgelopen weekend was Jamboree On The Air 2016, dit is een evenement waarbij scouts uit de hele wereld via amateur radio contact maken. Dit evenement is gecombineerd met Jamboree On The Internet (JOTI) waarbij de chat mogelijkheden via Internet gebruikt worden om de scouts met elkaar in contact te brengen.

Sinds de Veron afdeling Centrum een nieuwe locatie heeft bij scouting groep Peka 18 in Utrecht ben ik ook wat meer aan het volgen wat er met de JOTA gebeurt.

Omdat Wijnand PD5WL een kabel zocht die ik had voor zijn JOTA 2016 ATV experimenten kreeg ik ook gelijk de uitnodiging om even te komen kijken op die locatie. Ik ben zaterdagmiddag gaan kijken en het zag er leuk uit, en ik heb met diverse zendamateurs gesproken daar. En er waren zeker enthousiaste scouts bezig met radio!

Zaterdagavond heb ik ook wat PSK verbindingen gemaakt op de 20 meter band waarvan een met een scouting station van de Rover Crofts groep in Bilthoven met callsign PA6RCG/J.

Ook zijn er leden van Veron Centrum actief geweest: Special Event PE18KA/j bij ons clubhuis tijdens JOTA waar vermoedelijk ook nog meer beelden en verslag van komen.

2016-10-12 New for me amateur radio band activated: 15 meters (21 MHz)
LW-10 HF antenna with earth wire
LW-10 HF antenna with earth wire
My full radio amateur privileges let me play on quite a number of radio bands and I haven't activated most of them. Partly due to missing equipment, but partly just not getting around to it.

A fellow amateur pointed out to me that the 15 meter band can be quite interesting for making contacts with some new stations. The 15 meter band is from 21.00 MHz to 21.45 MHz. I sort of do have the equipment for working on that band: the LW-10 longwire antenna for 6 to 40 meters which needs an antenna tuner. In earlier experiments in using the antenna tuner the tuner failed on the 15 meter band.

Today I made sure the balun of the LW-10 antenna was grounded with an earth wire to the nearest heating radiator. Not an ideal RF ground but better than nothing. On the second try the antenna tuner did its magic and the radio was happy with the result. And there were no crashing USB devices! There was one thing: I hear a ticking noise when transmitting trough the tuner. That is an indication of stray RF problems in the tuner itself so I added a ferrite core to the power cable of the tuner which did not fix this problem completely.

One thing I really have to do is try to tune above the frequency I want to use.

So the antenna did want to tune and work and I tried some PSK contacts on that band. And success: I made several contacts, including one with PB0ACU. I had a contact before with PB0ACU when I still had my previous callsign so this was a nice return contact. It was clearly not DX, but other contacts were further away. I already received eQSL confirmations for this and a few other 15 meter PSK contacts so this band is now truly activated for me.

2016-10-02 I participated in the Russian worldwide digimode contest 2016 for a bit
I tried to get another Miguel de Cervantes special event station in the log and it seemed the easiest way was to participate in the RUS-WW-DIGI Russian worldwide digimode contest 2016.

But the weekend was filled with other things (such as chasing more of those special event stations, bad weather and lousy propagation) so my participation started in the last half hour of the contest, was very short and I made 9 valid contacts which I uploaded as a checklog. I thought I had a contact number 10 but that was after the end of the contest.

The results:
Band  QSOs Dupes Points Mults
160      0     0      0     0
80       0     0      0     0
40       0     0      0     0
20       9     0     29     9
15       0     0      0     0
10       0     0      0     0
Total    9     0     29     9
Claimed score is 261 points
But I got AN400G in the log in digimode, so another slot filled.

2016-10-01 Avoiding the local noise with help of a websdr
Local radio noise at home is at high levels again and the HF propagation isn't cooperating very well. This means that it's hard to make contacts which can be frustrating when I finally get some radio time.

At the moment I am chasing the Miguel de Cervantes special event stations organized by the Spanish radio amateur club with radio operators active all over the Spanish country. With the distance it should not be too hard, but band conditions don't cooperate very well, especially when I can't hear the remote station due to local noise.

Solution: listen on the websdr in twente and transmit on my local radio with maximum power (100 watts). The delay in the audio from the websdr means I have to adjust my timing but it is good enough to get my callsign across and check whether the other side received it correctly. So I manage to make a few more SSB contacts, since this works better on SSB than on digital radio modes.

2016-09-28 Zonnepanelen voor op de camping
Van de ervaringen van de vakantie in de zomer 2016 staat nog de wens om iets met zonne-energie te doen voor bij het kamperen.

We hebben op engelse campings al meer zonnepanelen gezien, dus het idee is zeker niet nieuw. En toen ik ging zoeken kwam ik draagbare zonnepanelen bij Gerritsma Makkum kleine zonnepanelen tegen, wat bijna exact de oplossing is die ik zoek. Ik zou een niet te zwaar draagbaar pakket willen met wel de optie om direct USB devices op te laden. Ik denk dat ik begin met de 12 V 7 Ah accu opladen met zo'n zonnepaneel en zien wat dat doet voor de energiewensen van mobiele telefoons en de lamp voor 's avonds lezen. Misschien later een accu met meer capaciteit zodat er ook meer buffer is voor amateur radio activiteiten.

2016-09-26 I participated in the CQWW RTTY contest 2016
This weekend was the CQWW RTTY contest 2016. I participated when possible between the normal weekend things like garden work and a family visit.

This is a very international and longstanding contest which runs 48 hours. I worked a few new countries including China, Montenegro and Aland Islands and less new Ceuta and Melilla, Madeira island (which I never worked since changing callsigns). In total I made 128 contacts which is a nice score.

Comparing this to the 54 contacts I made in the CQWW 2015 RTTY contest makes this a nice improvement. This year I used the endfed antenna outside, I had access to more of the 40 meter band and I started preparing for the contest on Friday evening.

After working through the logs the number of contacts did not change. Results uploaded via the cqww contest log website and to the Veron Afdelings Competitie.

2016-09-22 Amateur radio antenna camouflage
I am considering putting a vertical antenna for the 2 meter and 70 centimeter amateur bands on our roof. But I would like such an antenna to be as invisible as possible. One step will be to put it on the back of the dormer, as close to the center of the roof as possible. This would make it hard to see from the front side and from the backyard.

Another option for making an antenna less visible dawned on me when I saw an antenna at our radio club recently that was spray-painted in a red/brown colour to blend in with brickwork: it is possible to pain the outside cover of an antenna as long as the paint does not interfere with the radio frequencies.

Searching some more about this option I found an article at Diamond X50 Antenna Camouflage which describes an elaborate attempt at camouflaging a Diamond X50 antenna.

My choice of colour would be some sort of grey colour to be less visible against the average sky around here.

2016-09-09 First part of the lightweight outdoor radio antenna: the balun
Sotabeams balun After building and testing the Sotabeams dummy load I had time to work some more on the ordered parts. The main part of the order at Sotabeams was parts for outdoor antenna building: an antenna centre and 1:1 balun and linked dipole portable HF antenna kit.

The HF antenna kit does include parts for a simple centerpiece/balun but I decided to get a separate balun that should make these things easier and/or sturdier.

The balun build was doable, but soldering coax on the connectors gave a bit of a problem as the solder did not want to flow on those connectors very well. Maybe clean them next time or even sand them a little to make that easier.

Next part will be the rest of the HF antenna for which I will need an antenna analyzer and time outdoors in the daylight.

2016-09-06 Je draadloze microfoon is prima af te luisteren
Draadloze microfoon, bron Vandaag was ik op een plek waar regelmatig draadloze microfoons gebruikt worden bij presentaties en/of grote vergaderingen. Er was recent een probleem waarbij geluid van andere gebruikers van het gebouw te horen was op de geluidsinstallatie, en dat bleek na wat zoeken ontvangst van de "verkeerde" microfoons te zijn.

Er ging toen ook een lichtje op dat draadloze microfoons prima af te luisteren zijn, wat in deze omgeving niet altijd een prettig idee is. Met een scanner die wide-fm en een groot bereik aan UHF frequenties aan kan is het prima mogelijk naar analoge "Program Management and Special Events" (PMSE) microfoons te luisteren.

2016-09-01 I built a RF dummy load
I ordered some parts for building a lightweight outdoor radio antenna. But while ordering I had a look around and noticed the BOXA-LOAD 50 Ohm RF Dummy Load - Sotabeams, a kit for building a dummy load. So I ordered one in kit form, with enclosure.

Boxa load dummy load A dummy load is for testing radio circuits, it gives the radio the ideally matching load since radio transmitters ideally expect a 50 ohm resistive load. A dummy load does not convert the electric energy into radio waves, it just converts the electric energy into heat in the resistors.

I currently have an RF power meter on loan which I could use to test the dummy load so the dummy load was the first project to build and test.

Boxa load dummy load Building was no problem with the very clear instructions given by Sotabeams. And after building it I tested it and found it perfect as designed with no reflected power. The maximum power input is 20 Watt which it can handle for 1 minute and will need to cool down again for 10 minutes.

Items before 2016-09-01
This page is created by Koos van den Hout, contact information at the end of my homepage.
Other webprojects: Weatherstation Utrecht Overvecht, Weather maps, Camp Wireless, wireless Internet access at campsites The Virtual Bookcase book reviews,
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