PE4KH Amateur radio - Koos van den Hout

Most recent QSO's for PE4KH

Callsign Band Mode Locator RST(R) RST(S)
ZB3M40MFT8IM76-13-17
OD5ZF40MFT8KM74-18-08
UT5EPP40MPSK63KN67QU599599
UA2FAK40MPSK31599599
9A7DD40MPSK63JN86JG599599
9A7B40MPSK125JN85ET599599
SP4TKR40MPSK125KO04FA599599
DL1RI40MPSK63JO40OQ599599
HG3FMZ40MPSK125JN96AV599599
UY5HF40MPSK125KN66HP599599
IN3FOI40MPSK125JN55599599
UA3QGT40MPSK125KO90XL599599
RC5Z40MPSK63KO81SG599599
IU0ICA40MPSK63JN61GV599599
YO4NF40MPSK63KN44HE599599

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 qrz.com
PE4KH on hamqth.com

I am usually located around maidenhead locator: JO22NC

QSL policy for PE4KH

I upload logs to eQSL.cc during and after being active on the radio. I upload logs to ARRL Logbook of the World, www.qrz.com 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.

gallery of eQSL cards received by PD4KH and PE4KH.

Articles

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

Maps

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)

The 'hamradio' items from my homepage

2018-02-19 Again new countries in amateur radio in a pair
This evening another two new countries in my amateur radio log: Lebanon and Gibraltar. First OD5ZF from Lebanon and 4 minutes later ZB3M from Gibraltar. That makes three pairs in two months.

These two were both in FT8 mode on the 40 meter band. FT8 is very good at fast contacts at low received signal levels.

2018-02-18 Two new countries in the log and I participated in the Russian worldwide PSK contest 2018
Two new countries in the PE4KH log: Oman and India. Oman was Friday afternoon when I was home early and decided to turn the dial over the 40 meter band to make some phone contacts and heard A41CK call. Who took my call on the second try!

India was late Friday evening. The call VU2NKS showed up in FT8 and it had a direct pile-up (lots of people answering). But with some persistance from my side and good operating skills from the other side the contact was made.

And this weekend was the Russian Worldwide PSK Contest so I participated Saturday afternoon / evening and a bit Sunday right before 12:00 UTC. I managed to start Saturday 12:00 UTC sharp calling CQ. Which worked at that time for getting contacts. I chose the 40 meter band category because I expected most radio time this weekend would be after sunset.

In the end I made 64 contacts. Not a very high score, but I had times were several contacts happened in short succession so I am improving in digimode contesting.
Band  QSOs Dupes Points Mults
160      0     0      0     0
80       0     0      0     0
40      64     0    388    28
20       0     0      0     0
15       0     0      0     0
10       0     0      0     0
======================================
Total   64     0    388    28
Claimed score is 10864 points

2018-02-11 Plotting the number of amateur radio contacts
After the end of January I decided to plot the number of contacts again. QSL count plot up to January 2018 January is a busy month with two contests for me but I did not make a lot of contacts outside of those contests this year. I added contacts from holidays and the PE4KH/P activities to the total count.

Some more work on the plot script, I think bars look better than a line graph. But you could spend hours in gnuplot making the plot just right...

The new script:
set output "qslcount.png"
set terminal png size 640,300 fontscale 0.7
set timefmt "%Y-%m"
set xlabel "Month"
set ylabel "Number of contacts"
set xdata time
set style fill solid
set xtics format "%b %Y"
set xtics rotate
set grid
set boxwidth 0.75 relative
set autoscale xfixmin
set autoscale xfixmax
plot "dataset-qsocount" using 1:2 title "Contacts/Month" with boxes
Update: And indeed the change in x autoscale was one bit more 'just right'. The first graph was in February 2017: Rising number of amateur radio contacts.

2018-01-15 I participated in the UBA PSK63 prefix contest
PSK63 contest As planned I participated in the UBA PSK63 prefix contest in the weekend. Activity was Saturday evening and Sunday morning interrupted by some good sleep.

Compared to my experiences in the ARRL RTTY roundup one weekend earlier the 40 meter band decided to act quite differently. On Saturday evening it was quite hard to make a contact. A lot of interference, no far away stations and it was hard to get heard by the other side. I stopped before 22:00 UTC (23:00 localtime) because I thought some sleep would be more effective than getting annoyed by the lack of contacts.

Indeed, Sunday morning things got better although I heard only nearby signals on the 40 meter band, including some Belgian stations. No serious DX. Belgian stations are good for extra multipliers so it was good for the score.

In the end I made 76 contacts. The last contact was started by a CQ I called at 11:59 UTC but it was only answered at 12:00, so it does count but I had to note it in the log as originating at 11:59 where the software normally logs the moment I see the callsign for the first time.

Log submitted and de Veron afdelingscompetitie updated.

2018-01-12 I am planning to participate in the UBA PSK63 contest
As in previous years, I am planning to participate in the UBA PSK63 Prefix Contest in the upcoming weekend.

I can't participate for 24 hours since other things have to be done too in the weekend including the all important 'sleep'.

I just finished the preparations: On Saturday evening the 20 meter band will probably be closed by the time I am available for contesting. So I'll start on the 40 meter band. The choice for 40 meter band only or all band will have to be made on Sunday morning, depending on the amount of new contacts I can make in the 40 meter band.

2018-01-08 I participated in the ARRL RTTY Roundup 2018
RTTY contest on websdr For the past weekend I had the ARRL RTTY Roundup planned, meaning I had reserved time in the family calendar. Other things had to happen too but I reserved time for contesting and made sure I had the right macros available before the contest started. I hoped to find time to set up the endfed antenna before the contest but that did not happen so it was the first thing to do when we got home at the beginning of Saturday evening.

In the contest I only operated on the 40 meter band. Most of the time I was able to participate were in the dark when I did not expect the 20 meter band to cooperate and I thought that operating in just one band would make me end higher in the rankings for that more specific category. Only after the contest I read the rules exactly and noticed that this specific contest does not differentiate between single and multi band operation.

In the end I made 95 contacts. Local noise is high in my current setup so only the strongest stations came through the noise. I made only one contact in CQ mode, the rest was search and pounce. Propagation wasn't really good until late in the evenings when I managed to score some US contacts. I did see someone from Prince Edwards Island in Canada but that station did not hear me return. I noticed WP2B did not give me a US state but a serial number and found out that is a US Virgin Island callsign, so that was a new country for me.

In the end a nice contest. For upcoming contests: check the rules / propagation predictions and plan my strategy.

2017-12-27 The 10 meter band is alive the last few days
Yesterday on the 26th of December I saw FT8 activity on the 10 meter amateur radio band (28.0 MHz-29.7 MHz) and made a few contacts. Propagation dropped around 12:35 UTC after which I made one contact with a nearby amateur.

Today I spun the big dial on the radio to the 10 meter band after dark and made contacts (around 17:20 UTC). This is extra special as the maximum frequency at which propagation across the ionosphere occurs drops after the sun stops illuminating it and therefore the 10 meter band is the first band to drop after sunset.

All this was predicted: the most recent 'space weather news' had some good news for radio amateurs. Today I found an article The sun will probably knock out the grid someday | Popular Science which mentions the 'Space Weather Woman' Tamitha Skov and her youtube channel TamithaSkov. I have watched a few episodes and I read articles here and there with the predictions of solar flares and solar wind.

2017-12-24 First radio contact with Armenia
As if one new country today wasn't enough, I also managed to get Armenia in the log with station EK1KE also in FT8 mode.

2017-12-24 First radio contact with Australia
Map from pskreporter with Australia A special first for me: an amateur radio contact with Australia, with VK3EW who seems to be a serious DX chaser. For me, this is almost the other side of the world.

This was an FT8 contact, which is a digital mode specific for making contacts with very weak signals using the minimal exchange of information to have a valid contact. I think the neighbours have heard my happy shout after I saw the first response come back to me. The exciting part was making it a full contact complete with signal reports exchanged.

The distance of this contact is 16581 kilometers! The scaling of the generated maps at PE4KH amateur radio has been adjusted to make this contact visible.

2017-12-02 Preparing gpredict for AO-91 Fox-1B RadFxSat
Although reports are showing up that AO-91 has the usual 'zoo' when it's over southern Europe I still want to prepare for making contacts on interesting passes. So I dove into adding satellite transponder details to Gpredict again. According to [amsat-bb] AMSAT-OSCAR 91 identified it is Norad object 43017. And when Nico Janssen finds a satellite using his methods of doppler-curve fitting it's a very good indication it's the right one.

So time to create a .config/Gpredict/trsp/43017.trsp with the right frequencies and details:
[Fox-1B trsp 67 Hz PL]
UP_LOW=435250000
DOWN_LOW=145960000
MODE=FM
Now to find a pass at a for me usable time.

Items before 2017-12-02
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, webcam.idefix.net
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