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 PE4KH on twitter

I am usually located around maidenhead locator: JO22NC

The 'hamradio' items from my homepage

2020-05-17 New countries in the log, now waiting for confirmation
Two new countries in the log, now the wait is for the amateurs on the other side to confirm the contact via Logbook of the World. Or maybe not, but both seemed solid contacts.

First was to the island of Curacao, part of the Netherlands Antilles. A lot of Dutch stations will have Curacao in the log because the Americas are the 'easy' DX but with my antenna position it has always been easier to get to the east.

Second one was to Kenia, which was a sort of surprise contact, I suddenly saw signals from a station there without any other indication that there was an opening towards Africa.

In other amateur radio experiences I've also had some really nice 10 meter openings recently. This is remarkable at the bottom of the sunspot cycle, but I guess sporadic E and other special propagation modes help. So I got some new countries on 10 meter. Earlier North Macedonia and today Albania.

2020-05-03 New country in the log: St. Lucia
St Lucia on OpenStreetMap, map by OpenStreetMap contributors In my earlier activity on the 60 meter band I had a "maybe" contact to St. Lucia. This is one of the islands in the West Indies in the Eastern Carribian Sea.

But in the end the "maybe" contact was no contact. Ok, fine with me, on to the next chance. That happened Friday evening in a 10 meter opening: I came to the radio with the computer decoding FT8 signals ready to go to bed, but I saw J68HZ active as only non-European station, answering European stations. So I had to try!

After a number of tries I got a reply with a very weak signal report, so I kept my fingers crossed for the next exchange and it came, closing the contact. And the next evening the contact was confirmed, giving me a new DXCC entity.

2020-05-01 Time for a plot of the number of contacts in amateur radio after a busy month
QSO count plot up to April 2020 Time for a new plot of the number of radio contacts. As usual contest months are quite visible and January is for me the month with the most contests.

But April 2020 is also quite visible. This last week I had a lot of time for radio due to holiday and not going anywhere. And other radio amateurs also had the time to be active, so there were a lot of new calls to get in the log. Combined with a good 10 meter band opening this added to a high number of contacts for a month with only one contest.

2020-05-01 I'm not intimidated by morse anymore
Today I "chased" the special amateur radio call for the Bulgarian Saint of this month, LZ177GL.

The Bulgarian Saints are a set of special amateur radio calls each month, organized in Bulgaria by Bulgarian Radio Club BLAGOVESTNIK LZ1KCP. The callsigns are in honour of saints from the orthodox church.

LZ177GL was calling CQ at a rate of about 28 words per minute. My current rate is 12-13 words per minute, so that's quite a lot faster. But it doesn't intimidate me anymore, I can hear the callsign on a few repeats, I can hear when the return is with my full callsign and a 5NN (signal report) or a part of my callsign and a question mark. Or when the answer is for another station. And that's enough to make the contact with the absolute minimum information, exchanging callsigns and signal reports. When I'm convinced my callsign got across I send '5NN TU 73' to finish the contact.

I also made some other contacts in morse because I could hear CQ calls and was able to decode them by ear together with some help from fldigi. So my conclusion is that morse isn't "intimidating" anymore. I can understand enough to get an idea what is going on and use it.

2020-04-29 More 10 meter band fun
This month is somewhere near the absolute minimum of the solar cycle but today FT8 is active on the 10 meter band. I listened to other things on the 10 meter band but when I heard some morse I soon found out it was a beacon from Italy. It would have been nice to do some other mode than ft8 on the band.

But I made the possible FT8 contacts and got bigger distances than yesterday. In the evening I got Asiatic Russia and Belarus in the log.

2020-04-28 A nice 10 meter opening this afternoon
I'm at home at the moment with a few days off from work. Time to play some radio, and with the current stay at home measures there are a lot of stations active.

I spun the dial to the 10 meter band this afternoon and heard signals. There was a nice E-skip opening to Spain and I even decoded some signals from Brazil. With normal ionospheric propagation South-America isn't that hard for most of the Dutch HF amateurs, but it's usually my difficult corner. I made several contacts with stations in Southern Europe, including AM2WARD so that's a new slot in the IARU 95th anniversary stations as organized by the Spanish radio amateurs.

In the weekend I had contacts with other stations part of that activity, including several in morse. Those stations are using fast computer-generated morse so I can't decode everything 'live' but by now I do know what 'PE4KH 5NN' sounds like at rather high speeds.

2020-04-19 Going horizontal on 2 meters FT8
For all of my FT8 contacts from home until now I used the vertical diamond X-300N antenna on the roof. Most 2 meter DX stations will use a directional horizontal antenna, so I lose some signal when I try to communicate with them.

So last weekend I put the Arrow satellite antenna in the attic pointing out the window with the 2 meter elements in horizontal mode. Pointing out this window means southeast direction so I hoped to make some DX contacts into Germany or beyond.

Beyond did not happen, there was no special propagation on the 2 meter band. But the furthest contact was with DJ5FI with a distance of 360 kilometers. I'll try this again when there is special propagation in that direction.

2020-04-13 Beeping -- --- .-. ... . loud enough (2)
Today I had time to work on the transistor switching to make the morse oscillator work. As I noticed before the Kent Morse practise oscillator kit is powered directly via the key which draws more current than the nanokeyer I built can handle.

So I had to calculate a transistor switch. That's something I learned a long time ago when I did electronics trade school from 1985 to 1989. In Dutch: MTS electronica. That knowledge had to be dug up again when I did the advanced radio amateur course but since I didn't have to use that knowledge it all sunk away.

But, google to the rescue and I found lots of examples, but the easiest one was at Transistor as a Switch - ElectronicsTutorials which explained exactly what I wanted. The next item was 'which transistor'. The default NPN transistor is the BC547B, but the theoretical current through the oscillator is a bit more than this transistor can handle. But a fellow amateur had a few BC337 transistors spare in his junkbox, so I could continue with this project.

Today I did the drawing and the calculations. I looked up the specifications for the BC337 in full saturation, at which time the Vbe is 1.2 Volt, Vce is 0.7 volt and Ibase is 1 milliAmpere. So I ended up with a resistor of 6800 Ohm at the input (which is (9 Volt - 1.2 Volt)/1 millAmpere rounded) and after building it on a breadboard it went beep with an input current of somewhat over 1.0 milliAmpere.

Update: Second test was with the nanokeyer, which first gave no sound, but that was due to me turning the volume down on the practise oscillator. Turning it back up fixed the problem, and I now have loud morse!

In the end this is giving me a good feeling. I had a kind of problem I haven't had to solve in ages so I had to relearn how to solve this, I found the solution method and was able to apply it in theory, practice followed the theory and it all worked as designed.

2020-04-08 I participated in the EA RTTY contest 2020
RTTY Contest on websdr Last weekend was the EA RTTY Contest 2020 edition. I decided to participate beforehand so I set up radio, antenna and macros in time before the start. There was quite some time for the contest available since we're not going anywhere.

Things started slow, I couldn't get as much contacts in the log on Saturday as I had in the EAPSK63 contest 2020 on Saturday.

But on Sunday the contacts started happening and I ended with 143 contacts in the contest. 110 on the 20 meter band and 33 on the 40 meter band. I logged 26 unique provinces in Spain.

2020-04-03 I participated in the Dutch Digital Activity Contest April 2020
PE4KH claim in the 2 meter Dutch Digital Activity Contest April 2020 There is a new 'activity' promoting digital modes on the 2 meter band. It's short, which is probably why it's called an activity rather than a contest. And it's on a weekday evening. Information in Vanaf nu elke maand een VHF-UHF Digitale Mode Activiteitscontest - VHF en hoger Veron (in Dutch). On the first Wednesday evening of the Month it will be on the 2 meter band, on the second Wednesday evening of the Month it will be on the 70 centimeter band.

I participated 1 April 2020 and made 22 contacts within the activity. Several new calls for me in the log, so that's always good. The contestlog processing website generates a map with locators after submitting a log, so I use that map in this newsitem.

The preferred mode is FT8, and some participants were using the FT8 software in 'EU-VHF mode' exchanging serial numbers and 6-character maidenhead locators. My wsjt-x decided to switch on receiving such an exchange. The interesting part was that in a few of the next contacts the software also switched but other contacts failed with that information so I switched back to normal FT8 with the 'EU-VHF mode' disabled.

Items before 2020-04-03
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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