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

I am usually located around maidenhead locator: JO22NC

QSL policy for PE4KH

I upload logs to and ARRL Logbook of the World, during and after being active on the radio. I upload logs to and clublog on a regular basis. I like paper cards via the QSL bureau so I send those out when requested or when I think the other party will appriciate one and I will respond when I receive a card. You can also request a card via the Log Search on clublog for PE4KH using the OQRS service. Notifying me via e-mail that you would like a card is also possible.

I appreciate SWL reports for QSOs and will respond.

gallery of eQSL cards received by PD4KH, PE4KH, PE4KH/P, DL/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 17M 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)
Mapped 60M contacts by PE4KH gridsquares contacted (red) and confirmed (blue)
Mapped 80M contacts by PE4KH gridsquares contacted (red) and confirmed (blue)

Mapped 2M contacts by PE4KH gridsquares contacted (red) and confirmed (blue)

The 'hamradio' items from my homepage

2018-11-25 New country in the amateur radio logs
This weekend I had some time and energy to power up the amateur radio set and trying to get interesting contacts. All in FT8 digital mode as the local interference levels are high. I do my voice contacts at the radio club or out in the field.

This Saturday I managed to make a contact with 5T2AI on Mauritania, a new country in amateur radio for me. At first the other station did not receive me but using the power amplifier helped to make the contact.

I also did a lot of attempts to get a contact with the current radio expedition to Rodriguez Islands but failed.

2018-11-02 Stroomstoring afgelopen dinsdag
Er was een stroomstoring afgelopen dinsdag. Ik ontdekte dat op een hele typische manier: ik werd wakker voor de tijd van opstaan, wat me wel vaker overkomt en ik wilde op de wekker kijken maar die was donker.

Uiteindelijk was de stroomstoring van 06:23 tot 08:07, in een aardig gebied rondom ons huis. Helaas was er in de ochtenddrukte geen tijd om te testen wat het gevolg van deze uitval was voor het storingsniveau op de amateur radio HF banden.

2018-10-21 One of my first radio contacts (re)confirmed
From time to time I check whether eQSL has new incoming confirmations for PD4KH contacts. Recently I found one for a contact that goes way back, and it was before I used a linux radio logging program so I did not have the details stored in my logging program. But my website still has those details: Vanavond vanuit de achtertuin contact met PI4HAL via repeater PI3UTR.

It turns out PI4HAL decided to stop sending out paper cards and started using eQSL. I guess they uploaded all old logs.

I do remember the contact and being nervous about actually talking "on the air" and finding my turn between other callers to that station.

This was a trigger for me to check my old logs and make sure I upload things correctly to ARRL Logbook of The World including the few satellite contacts.

Oh and I never started using hrdlog as PE4KH. It did not add a lot for me.

2018-10-10 New countries in amateur radio using the radio at the club
My amateur club Veron A08 call PI4UTR has a really good clubstation with multiple nice antennas. In an environment with a lot less interference than I have at home.

Last Tuesday I used the clubstation to make a few connections and got some nice calls in the log, adding two new countries. VP8LP on the Falkland Islands and CE2ML in Chili.

2018-09-13 Missing bit for the HF amplifier: the PA control cable
The HF linear amplifier I bought had one missing link: the control cable to signal when to start transmitting.

I first looked for such a cable at Hamshop but the cable was not available anymore. Further searching found the right cable at 8 pin linear amp switching cable for Yaesu FT-817 FT-857 FT-891 FT-897 FT-991 - TechnoFix UK and ordered it. It came in, so time to test it in the upcoming weekend.

2018-09-07 Plotting the number of amateur radio contacts
QSL count plot up to August 2018 After the SCC RTTY contest in August I decided to plot the number of amateur radio contacts again. Clearly visible are months with contests I participate in. And the influence of the summer holiday.

before, before, before

2018-09-02 Ok weather and time for outdoor radio
Outdoor radio
Outdoor radio, picture by PA5Z
Last Friday I had time available for outdoor radio and the weather prediction looked nice. Fellow radio amateur PA5Z had time available too and joined me. We cycled to the local park and found a nice spot for some radio, complete with a bench available to sit and run the radio.

First decision was which band, because changing the band after raising the linked dipole means having to take it all down again. It was a tough decision between 40 and 20 meters, both looked not too promising. We decided on 40 meters.

I also extended the mast and tie-wrapped the balun of the linked dipole to the mast (three segments below the top) before getting the mast upright. This worked nicer for me on an earlier setup. The downside is that we had to be very careful in where the guy-wires and the dipole wires are around the fiber mast to avoid tangled lines and twists. And the right way to lengthen the mast is twisting the segments to lock them together.

With two people it is a lot easier to get the mast straight and it looked very nice. Soon contacts were made, but after a few tries I received a report that the audio sounded like I had RF interference. I heard this remark before at the end of my testing the mast at Trintelhaven and this time I found out what the problem was: the lead-acid battery I was using was running low and when the voltage drops from 12.0 to 9.6 volts on transmitting the output gets distorted. The fix was to lower the output power, a local radio amateur who we contacted was willing to help test this and confirm my theory that the drop in voltage was causing distortion.

Eventually it started to rain a bit, the batteries started to get depleted even at lower power and we decided it was time to pack up and go back home.

A nice day for radio, I ordered a new battery to replace the failing ones and I'll be doing this again some day!

2018-08-26 I participated in the SCC RTTY contest
RTTY contest on websdr As planned and prepared for I participated in the SCC RTTY contest this weekend. I was aiming for 100+ contacts but due to local interference and not very cooperating propagation those did not happen. In the end I made 83 contacts, 2 on the 40 meter band and 81 on the 20 meter band. I entered in the 'single operator 20 meter' category which was the most fitting for me. That does mean the 2 40 meter contacts only count for log checking.

Interesting things that happened: I got YV5AAX in the log. This has happened before in RTTY contests. But I do see YV5AAX from time to time in FT8 but never made a contact in that mode. I guess the station uses different antennas for contests. I also worked several US stations but I don't think those have resulted in a new US state for my statistics.

The new amplifier was working fine although I noticed the fan control and fan in the power supply stopped completely when I transmitted RTTY in the 10 meter band. This was not a very big problem this time as there was no propagation at all on that band. But it will have to be fixed before the next contest.

With this amount of power I can work almost all stations that I can decode. That is a nice improvement!

2018-08-19 Testing the fiber mast with antenna at home
Today I set up the fiber mast against the back fence of our yard and used it to raise the endfed wire antenna as a vertical, with the coil between the 10/20 meter and 40 meter parts of the wire a few segments beneath the top of the fibermast.

This works ok. Interference on the 10 meter band is nearly gone, interference on the 20 meter band is about the same. What is also interesting is that this setup gives more balanced results on the pskreporter map. With the endfed antenna from the roof to the end of the garden the results are that most of what I receive is to the east of me. With the fibermast and the endfed as a vertical the reception is more balanced and I see more North and South America.

There is a downside: with even the slightest bit of wind the top of the fibermast starts to move a bit much. So to keep this setup safe for a weekend I would need to do something with guy wires.

Items before 2018-08-19
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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