PE4KH Amateur radio - Koos van den Hout

Most recent QSO's for PE4KH

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

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
gcmwin for linux maps with gridsquares contacted (red) and confirmed (blue) :
Mapped HF contacts by PE4KH
Mapped 10M contacts by PE4KH
Mapped 15M contacts by PE4KH
Mapped 17M contacts by PE4KH
Mapped 20M contacts by PE4KH
Mapped 30M contacts by PE4KH
Mapped 40M contacts by PE4KH
Mapped 60M contacts by PE4KH
Mapped 80M contacts by PE4KH
Mapped 2M contacts by PE4KH
Mapped 70CM contacts by PE4KH
Mapped satellite contacts by PE4KH

The 'hamradio' items from my homepage

2020-02-20 I think I figured out why I didn't hear satellites with 2 meter downlink
I was preparing for trying some satellite contacts and noticed the Fox-1B and Fox-1D had nicer opportunities for a contact. But I always have problems receiving any signal from those satellites on the handheld radio that I use for satellite contacts, which is the Wouxun KG-UVD1P I got for Christmas in 2012. Not the ideal radio for amateur satellites, but easy to bring along and to program with split frequencies.

A while ago I noticed that radio was constantly receiving noise on the 2 meter band and I had to set the squelch level quite high to stop it. I thought it was some local overload or local noise in the 2 meter band. But today while working on the preparations for some satellite contact possibilities I figured the problem is with the radio and something is actually wrong on the 2 meter receive side.

I have two other handheld radios. One is a Kenwood TH-D7 where I can't change the squelch level so it's not really usable for satellite contacts and the other is a Baofeng UV-5R which can't be programmed via the computer.

So I spent a lot of time entering all the possible doppler-shifted frequencies of both satellites on the keypad of the Baofeng UV-5R. I hope that gives me a working radio for Fox-1B/Fox-1D and I can get a few new contacts in the log.

2020-02-15 Active on the 60 meter amateur band again
I had one whole contact on the 60 meter band a few years ago with a German station. This band is supposed to be outside of the reach of my longwire, but with a lot of tuning it can work.

This weekend the longwire and the tuner absolutely did not want to get to a workable state on the 80 meter band so I tried the 60 meter band again. In FT8 mode, as that is what gets me the most result from home outside of contests.

This got me a number of contacts. Also one new country already confirmed: Tajikistan. And a new country with a questionable contact, so I'm waiting to see whether the other side will confirm or not. Formally 60 meter doesn't count for ARRL DXCC, but to me every contact counts in some way. I even got stations responding to me before I called CQ, I guess some amateurs are keen on getting a new callsign in the log.

I took down the wire antenna Saturday early in the evening because the winds were picking up for another storm.

2020-02-08 Still learning morse, getting some help
I'm still working on learning morse code. Sending morse code with the paddle is going ok at about 10-12 words per minute. Receiving is also somewhere around that rate, but I make more errors receiving.

I practise receiving morse with G4FON (Windows), xcwcp (Linux) and IZ2UUF morse trainer (Android). G4FON offers Farnsworth timing, where the letters are transmitted at a higher rate but there is extra spacing between letters to lower the rate of transmission. In xcwcp I can add extra dots between letters and in IZ2UUF morse trainer I can set extra length as a factor of the letter length. Three somewhat different methods to help learn morse at a reasonable speed.

To practise sending morse I use either the FT-857 radio or the control unit of the remote radio as expensive morse sounders. For the morse training at the radio club this is somewhat bulky and the internal buzzer of the nanokeyer is not loud enough so I ordered a practise oscillator kit from Kent morse equipment in the UK.

I also joined The Less Involved Data Society where I hope to meet newcomers to morse on the air. So I am now LIDS member number 414.

And for the rest: practice, practice, practice. Changing between modes of practice such as whole words in English or Dutch or back to random characters or groups of 5 letters helps improving speed and accuracy.

2020-02-04 Chasing more DX with HamAlert
This weekend I had some random radio time so I made a number of contacts. By numbers mainly in FT4 and FT8 but also some SSB and CW via the remote radio.

I activated HamAlert triggers and used that to get a few countries in the log that I wanted confirmed via LoTW. This worked for Corsica and San Marino. I got an alert for a San Marino call on Saturday and worked it reasonably fast after an FT8 CQ from that station.

On Sunday I saw a notification for a Corsican call on FT8. When I saw the activity I noticed the station was just calling other stations. So I just started answering the callsign in the hope of getting the contact and after a few tries the hint came across and I got the contact in the log.

This is an area where an alerting system that uses more sources than just the DX cluster network works better: the station from Corsica never showed up on the DX cluster, but the activity was seen by PSKreporter and filtered by HamAlert into a notification to me.

The contact with Corsica is already confirmed on LoTW.

2020-01-13 I participated in the UBA PSK63 prefix contest
PSK63 contest in fldigi Like in previous years I participated in the UBA PSK63 Prefix Contest in the weekend.

Overall it was a nice contest, with 111 contacts in total which makes this a good contest score. I started in the 20 meter band on Saturday, moved to the 40 meter band after propagation died down due to the sun going down.

On Sunday morning I started on the 40 meter band but soon gave up, there was a lot of interference on that band. I switched to 20 meters and made some more contacts. In the end: 38 contacts in the 20 meter band and 73 in the 40 meter band.

2020-01-08 Changed to a new alerting option for radio amateurs
I turned on the remote radio today and saw in the DX cluster that the ZC4UW dxpedition was still active although 7 January was the last day.

The signals were never good enough to make the contact, but this made me rethink the DX alerting options I have. I used 'DX Alert' on Android before, but this program had some difficulties and I can't find it anymore on the google play store which suggests it's really going out of support.

The new suggestion is HamAlert which processes data from the DX Cluster network, PSKreporter, Reverse Beacon network and Sotawatch, allows the user to set triggers and report via push notification to a Android/Iphone when the HamAlert android app or equivalent iPhone app is installed.

I created an account, installed the app and set up my first triggers: countries in and around Europe I don't yet have confirmed in bands/modes that I can use. It's a lot easier in HamAlert to set these up compared to DX Alert because it can all be done on the HamAlert website and can be customized more easily.

Update 2020-01-12: First score: I activated the alerts today because I had some time to get on the radio between other things. I saw alerts for E44RU which is in Palestine on a non-standard FT8 frequency. I spun the dial, adjusted a bit and made the contact. And that's a new country for me.

2020-01-06 I participated in the ARRL RTTY Roundup 2020
RTTY Contest on websdr This weekend was the ARRL RTTY Roundup edition 2020 and I participated. Late Saturday evening I saw a few US stations come up on 40 meters. Sunday afternoon I made a lot of contacts to mostly European stations on 20 meters. In the evening after dark the contacts from Europe seemed to stop after the first 24 hours were over but when I checked again late in the evening more US and some Canadian stations were decoded on my end and I worked them.

In the end 110 contacts, a nice score for this contest. Claimed score: 110 qso points * 33 multipliers = 3630.

The one that got away: I saw a station from California calling and giving state 'CA' in contacts, but he never heard me. That's the first time I heard or saw anything from one of the western US states.

2020-01-06 Security tools can help practise morse
Today I needed blocks of random letters to practise sending morse. What better tool to create those blocks than good old pwgen with the right settings:
$ pwgen -0 -A 5 12
ahhud eizaa kuoku ahyoo aequi epiis eiwei eimap sohsh papai ikeit oucho
And the trick for generating groups of five digits is a bit longer:
$ pwgen -r abcdefghijklmnopqrstuvwxyz -A 5 12
97228 85996 98876 38451 06091 98556 53369 73632 29509 29032 89601 16078
Use better parameters with pwgen to generate actual passwords.

2020-01-01 Closing 2019 in amateur radio, time to plot the number of contacts and look back
QSO count plot up to December 2019 Time for a new plot of the number of radio contacts. Months with contests are quite visible. After the peak in number of contacts in July there was first a holday and after that no big peaks in number of contacts. December 2019 jumps out a bit again due to the FT8 roundup on 8/9 December in which I made 66 contacts and later in the month the troposperic ducting allowing contacts over interesting distances in the 70 centimeter and 2 meter band added to a sprint at the end. In 2019 I made a few more contacts than in the previous record year 2017.

Looking back at my amateur radio resolutions for 2019 I think most came true.

If I look at them one by one: Now I have to think about 2020, but the year is still young.

2019-12-29 New countries.. on the 70 centimeter band
I saw reports of special propagation on the 2 meter band and even on 70 centimeters today. Normally I can get something further than line of sight on 2 meter and line of sight is the hard limit on 70 centimeter. But with some propagation types it's different and signals can get further. So I tried FT8 on both bands and got Belgium, France, Germany and England in the log on 70cm and new callsigns on both bands.

Denmark still got away, I had an almost-contact with a Danish station on 70 centimeters but it stopped after the initial exchange.

This is all with the vertical antenna on the roof. I wonder what a beam or big wheel antenna for 70cm or 2meter could do.

At the same time I spun the dial on the remote HF radio so I also got some calls in the log on 20 meters.

Update: Current distance record on the 70 cm band is 803 kilometers to F8DBF in France and the first contact with Denmark has been made.

Items before 2019-12-29
This page is created by Koos van den Hout, reachable via e-mail as my callsign @
Other webprojects: Weatherstation Utrecht Overvecht, Camp Wireless, wireless Internet access at campsites The Virtual Bookcase book reviews
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