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amateur radio antarctica aprs hf iss qo-100 qsl cards robust packet rs-44 satellites swl amsat antarctica aprs citizen science cubesat geolocation hamradio hf iss qo-100 qsl robustpacket rs-44 satellite satellites swl telemetry

  • Amateur Radio Satellite Communications: A Comprehensive Guide

    Amateur Radio Satellite Communications: A Comprehensive Guide

    Amateur radio satellite communications represent one of the most fascinating aspects of the hobby, combining radio technology, space science, and global connectivity. Since the launch of OSCAR 1 (Orbiting Satellite Carrying Amateur Radio) in 1961, radio amateurs worldwide have been communicating through an ever-evolving fleet of satellites, pushing the boundaries of what’s possible with relatively modest equipment.

    How Amateur Radio Satellite Communications Work

    At its core, satellite communication involves transmitting radio signals to a satellite in orbit, which then retransmits these signals back to Earth. However, the technical details make this seemingly simple concept both challenging and rewarding.

    satellite hamradio cubesat AMSAT citizen science Created Wed, 28 May 2025 00:00:00 +0000

  • KP2/K0FFY RS-44 QSO

    CT1ETE 🛰 Feb 14

    Yesterday, I was lucky enough to have worked Adam K0FFY, operating portable in US Virgin Islands as KP2/K0FFY, using RS-44 satellite. This is a nice QSO for me as I operate from my home with an X-30 vertical antenna from Diamond, which is a challenge due to extreme fading and weak signals.

    Thanks Adam!

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    hamradio satellites rs-44 Created Fri, 14 Feb 2025 00:00:00 +0000

  • Kenwood TH-D75 APRS Experiment

    Recently, I took a short excursion through the city of Guimarães with the objective of conducting a brief APRS test using my Kenwood TH-D75. The purpose of this test was to map the coverage areas of the Braga digipeater, CQ0PBR, which is installed on Mount Santa Marta at an elevation of 562 meters ASL.

    CQ0PBR

    Aware from the outset that the antenna is not yet in its final location due to certain technical constraints, I was fully conscious that, in lower and more obstructed areas without a direct line of sight to the digipeater, it would be exceedingly difficult for my packet to be relayed.

    hamradio aprs geolocation Created Thu, 06 Feb 2025 00:00:00 +0000

  • HF Robust Packet

    CT1ETE 🛰 May 2

    I started my HF Robust Packet experiments with my friend CT2IWW, Paulo.

    Since I don’t have a TNC, I chose to use the WinRPR software, which emulates an SCS TNC (discontinued) and can be used with a sound card. In my case, I am operating with a Flex 6400M and I use Flexradio’s CAT and DAX system to receive and transmit. APRS software used was APRSIS32.

    My first tests were carried out successfully in the 80 meter band.

    hamradio hf robustpacket Created Thu, 02 May 2024 00:00:00 +0000

  • DP0GVN QO-100 QSO

    CT1ETE 🛰 Apr 29

    I love Antarctica 😍 #hamradio #Antarctica

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    hamradio satellites qo-100 Created Thu, 25 Apr 2024 00:00:00 +0000

  • DP0POL/MM QO-100 QSO

    CT1ETE 🛰 Apr 25

    Two grids (IJ23 & IJ24) today, with DP0POL/MM, operated by Felix DL5XL. Great operator and always keen to a good conversation after the pileups. #amsat @amsatdl #hamradio #qo100

    alt text

    Watch DP0POL/MM in action via QO-100 Satellite

    hamradio satellites qo-100 Created Thu, 25 Apr 2024 00:00:00 +0000

  • RS0ISS - Gagarin Contest QSO

    CT1ETE 🛰 Apr 14

    hamradio satellites iss Created Sun, 14 Apr 2024 00:00:00 +0000