Ham radio blog by OZ1BXM

mandag den 14. august 2023

DIY 70 cm yagi 6 elements

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Figure 1. I needed a short 70 cm yagi for working the LEO satellites. In earlier years, I've had a 6-element yagi and I was satisfied wi...
torsdag den 26. januar 2023

My first DXCC diploma

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My first DXCC diploma arrived in the mail today. Shipping from USA to Denmark took 16 days. The mode is Mixed because CW and FT8 were used f...
søndag den 8. januar 2023

First QSO via Greencube satellite

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Greencube is an exciting satellite. The orbit is MEO (Medium Earth Orbit), and the average distance to Earth is 6,800 km. Greencube carries ...
mandag den 5. december 2022

I've worked 100 entities using FT8

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In July 2022, I challenged myself to  pursuing 100 entities using FT8 and wire antennas. The pursuit is over now as I worked entity #100 on...
søndag den 10. juli 2022

In Pursuit of 100 Entities using FT8

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I've decided to challenge myself and pursuit 100 entities using FT8. My experience with FT8 is not long as I've had only 25 QSO'...
tirsdag den 26. april 2022

Operating 144 MHz EME again

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After some years of non-activity, I've decided to operate 144 MHz EME again. The equipment is in store, and I want continue in this exci...
torsdag den 1. juli 2021

Mains power alarm

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Our refrigerator must run at +5C at all times. But one day, the security relay of the house flipped and cut the power off. The power outage ...
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About me

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Lars Petersen
I develop, build, and describe electronic circuits and ham radio projects.
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