Remco den Besten
3.3K posts


@F5VMJ Paul, thanks for a first time ever XU via QO100 and a first XU-PA! 🥳
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Winds have finally died down. There is a weather window now as these occluded fronts pass. Maybe just with rain and thunderstorms. Will try HM59 this morning then HM69 later. #qo100 #hamradio #AmateurRadio


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@JordiKeijzer Kan jij mij een PM sturen? (want ik kan dat jou niet).
Ik zie dat jij ook chemicus bent en ik heb een vraag aan je. Bij voorbaat dank.
Nederlands

@Marco_Langbroek @Nieuwsuur Mooi item en ook mooie dekmantel om stiekem meteoren te spotten ! 😆
Nederlands

Ik was zojuist te zien in @Nieuwsuur, in een item over Russische #aanvallen op Europese communicatie-#satellieten.
Morgen een uitgebreide versie op het Nieuwsuur Youtube kanaal.

Nederlands

@remcodenbesten @pa1ejo Thanks Remco, much appreciated. Ernst was kind enough to send a copy to me as well😀
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I've been battling to understand how this Delta Loop antenna I'm working on, is not a dead short.
Here is an explanation.
The current in a loop antenna travels around the loop, peaking at certain points and being minimal at others. By placing the feed point where the current is optimal for efficient transmission or reception, you're matching the antenna's impedance to the feedline's, avoiding a short. In an ideal case, the delta loop's impedance at the feed point is matched to the transmission line's, which is not conducive to a short circuit.
So, even though a delta loop antenna might appear like a loop that could potentially short at the feed point, its design, the placement of the feed, and the electrical properties at radio frequencies prevent this from happening. The loop remains an effective radiator/receiver for RF energy without causing a short circuit.

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@remcodenbesten @pa1ejo Unfortunately I did try downloading it but seems as though the file download is prohibited from South Africa. Multiple times it just says "Download Pending" and then fails.
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@jennykleeman May I compliment you from The Netherlands for your excellent podcasts 'The Gift' ?
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1/x
It is with much pleasure that I can announce that, on my suggestion, the Working Group on Small Body Nomenclature of the @IAU_org has decided that #asteroid (669952) will henceforth be named:
(669952) Kootker
...after the Dutch @VU_EarthScience scientist @LisetteKootker


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It's autumn, the sun is shining, and the central heating is on. I am Joram, sleeping in my arch! @catsoftwitter #catlover

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@F5VMJ Again Paulo ... thanks for a new one , and ... your efforts to give me (and , of course others!) a new one !!
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Decided to risk the shorter 6km route in the mountains to get to HK75 (instead of the long 45km ..see previous post). Set up during a brief lull in the rain. My previous days reconnoitre paid off. Depending on the weather, I may try a second activation at the weekend for anyone who missed me. Tnx agn all 73 de D4VMJ. #qo100 #hamradio #amsat



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