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60 m band
As a result of a request from VERON ("Vereniging voor Experimenteel Radio Onderzoek Nederland") to "Agentschap Telecom", in the Netherlands there is a chance that part of the 60 m band (5250 - 5450...
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Collector items
Yesterday I found a box with old components. Some of them were germanium transistors.I must have kept those semiconductors since about 1977. I remember building a simple MG-radio receiver with an...
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DIY frequency counter
There is no excuse anymore not to provide your receiver or transmitter with a frequency counter.For 6 euro's I built a counter which measures frequencies from 1 Hz till 50 MHz.I ordered the "Do It...
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Encounter with Aeronautical Mobile station
Yesterdag, August 5, I made a nice radio contact via the repeater PI3UTR (145.575 MHz). With my UV-5R porto I had a QSO with Gerrit, PA0GJC/AM, who was transmitting from a small piston engine driven...
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KT-8900 VHF/UHF transceiver
If you are looking for a small, low budget, VHF/UHF transceiver the KT-8900 from manufacturer QYT from China might be your choice.For under $100 you are the owner of this FM mobile transceiver with a...
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MARS mod for FT-450
There is a way of extending the TX frequency range of the FT-450 transceiver. The so called “MARS” (“Military Affiliate Radio System”) modification provides out-of-the band operation of the...
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JT beaconing on HF
JT65 is an excellent mode for QRP experiments on HF. This weekend I did some short trials with this mode on 5.35 MHz with my "MARS"-modified FT450.My 5 Watt JT65 beacon signals were captured by the PSK...
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Betelgeuse
Betelgeuse is the ninth-brightest star in the night sky and second-brightest in the constellation Orion. The distance to us is estimated at 640 lightyears. It is a first magnitude star and with the...
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eQSL from Albania
This week I received my first eQSL from Albania from a digimode QSO I had Augustus 2006 with Dimitri. The callsign of Dimitri is ZA/IW2JOP. eQSL from ZA/IW2JOP...
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145 MHz transverter
I found an interesting article in Funk magazine from May 1999.It describes a 28 MHz to 145 MHz transverter.Since I would like to use SSB modulation on 2 meter I am considering to make a transverter...
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Jupiter
Last Wednesday evening there was a micromoon in a clear sky. A good opportunity to make some photoos. I found Jupiter in the constellation Lion....
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First 2m SSB QSO
First 2m SSB QSO realized with homemade transverter (See my blogspot article April 23)Henk, PE0HZD replied on my request to make an USB QSO on 144.550 MHz.Allthough our station distance (Zoetermeer...
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47 Amps Power Supply
Henny, PA3HK, had some used Hewlett Packard Power Supplies for sale. Yesterday I picked up one. It is a rather small unit (27 x 6 x 6 cm) and is capable of delivering 47 Amps (!) at 12 Vdc.I made the...
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Zuidzijde
Picture of our next QTH: Zuidzijde on the island of Goeree-Overflakkee:View on the harbour of "Stad aan het Haringvliet", a village about 8 km from Zuidzijde:
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Astra3
I do not have access to hi-speed data links such as fibre optics ("glasvezel") in my new QTH near Den Bommel at Goeree-Overflakkee. 6 weeks without TV was not that difficult, but it would be nice to...
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USB Microscope
In order to be able to do visual inspections of PCB’s or components I normally use a magnifier glass. Where the magnifier glass offers a magnification of 5X, a low-cost USB microscope can give you...
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uBITX
Ashar Farhan has developped a compact HF transceiver with following characteristics:- 10 Watts PEP on lower HF bands- SSB and CW- Minimal controls- Based on Arduino controller and one Si5351 for all...
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Radiomuseum De Stove in Achthuizen
I found that only a few km’s away from where I live, there is a tiny radiomuseum called "De Stove" in the town of Achthuizen. Owner and builder Jan Dekkers has collected tube radios for many years. In...
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Greeting from Port Elizabeth
Just received a funny eQSL-card from Barry ZS2EZ in South Africa (Port Elizabeth).QSO was from 2011 on 28 MHz (RTTY).
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