Technonet op PI3ZLB – rondeleider : Egbert PA0EJH.
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/
Technonet op PI3ZLB – rondeleider : Tom PC5D.
Technonet op PI3ZLB – rondeleider : Paul PE1BBC.
Online bijeenkomst van regio 23+24 van DARES.
Deelnemen via : https:/meet.jit.si/dareslimburg
Meer info bij de RegioCoordinator : PD4JD at amsat punt org
- DARES Handboek V2.2, voorbereiden op cursus najaar 2022 en het examen
- Formulieren, wat af te drukken en up-to-date te houden
- Deelnemers werven Deelnemers (wat doe je om collega-amateurs te werven voor DARES?)
Technonet op PI3ZLB – rondeleider : Egbert PA0EJH.
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/
Technonet op PI3ZLB – rondeleider : Tom PC5D.
Technonet op PI3ZLB – rondeleider : Paul PE1BBC.
Technonet op PI3ZLB – rondeleider : Egbert PA0EJH.
