Zuid-Limburgse Zondag Ochtendronde via PI3ZLB 145,725 MHz – rondeleider : Rudolf PA1EBM.
Tevens stream via : http://meet.jit.si/pi3zlb
Zuid-Limburgse Zondag Ochtendronde via PI3ZLB 145,725 MHz – rondeleider : Folkert PA0FOT.
Tevens stream via : http://meet.jit.si/pi3zlb
Zuid-Limburgse Zondag Ochtendronde via PI3ZLB 145,725 MHz – rondeleider : Ron PE8E.
Tevens stream via : http://meet.jit.si/pi3zlb
The story of Jodrell Bank –
Ian G0DMU.
Professor Ian Morison, G0DMU will give a review of the history of Jodrell Bank, one of the world’s premier radio astronomy observatories; from its founding in 1945, the completion of the Mk I (now Lovell) radio telescope in 1957 – still the third largest fully steerable telescope in the world – and the building of the MERLIN array in the 1980s and 90s.
The MERLIN array has the same resolution as the Hubble Space Telescope and many collaborative observations have been made over the past 30 years. Its seven telescopes also link up with others across Europe to provide an instrument whose resolution far exceeds that of optical telescopes.
Some of its most exciting discoveries will be discussed in the context of how radio observations are made – many of which can complement those made by optical telescopes.
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As part of the national “Get on the air to care” campaign with the NHS, the RSGB Tonight @ 8 series of live webinars cover a range of topics and help you gain more enjoyment from amateur radio.
Tonight @ 8 webinars are live-streamed, allowing you to watch the presentations and ask questions online. They can also be viewed on a later date on the RSGB website and YouTube.
Info : https://rsgb.org/main/tonight-at-eight-live-webinars/
Zuid-Limburgse Zondag Ochtendronde via PI3ZLB 145,725 MHz – rondeleider : Ruud PA5RWD.
Tevens stream via : http://meet.jit.si/pi3zlb
Zuid-Limburgse Zondag Ochtendronde via PI3ZLB 145,725 MHz – rondeleider : Wil PD4Z.
Tevens stream via : http://meet.jit.si/pi3zlb
Zuid-Limburgse Zondag Ochtendronde via PI3ZLB 145,725 MHz – rondeleider : Tom PC5D.
Tevens stream via : http://meet.jit.si/pi3zlb
Zuid-Limburgse Zondag Ochtendronde via PI3ZLB 145,725 MHz – rondeleider : Ruud PA5RWD.
Tevens stream via : http://meet.jit.si/pi3zlb
Radio waves and antennas … and all that – Peter G3XJE
This presentation covers a range of antenna-related information so there should be something for everyone:
What makes a radio wave? Some mysterious properties of radio waves which you might not have appreciated. How do you launch radio waves? Antennas. Radiation resistance. Radiation patterns. Antenna gain. Transmitting and receiving. Getting power into, and from, your antenna. Resonance, or lack thereof. Feeders. Feeder impedance. Matching – does VSWR really matter? Why can’t you make a monopole? Multi-element antennas. Phased antennas.
=========================
As part of the national “Get on the air to care” campaign with the NHS, the RSGB Tonight @ 8 series of live webinars cover a range of topics and help you gain more enjoyment from amateur radio.
Tonight @ 8 webinars are live-streamed, allowing you to watch the presentations and ask questions online. They can also be viewed on a later date on the RSGB website and YouTube.
Info : https://rsgb.org/main/tonight-at-eight-live-webinars/
Zuid-Limburgse Zondag Ochtendronde via PI3ZLB 145,725 MHz – rondeleider : Rudolf PA1EBM.
Tevens stream via : http://meet.jit.si/pi3zlb
