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Lowpassfilter for DATV - DTX1

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Post by Ivan Wed Jun 05, 2024 8:12 pm

Hi,

the common language of this forum is English, so I added the machine translation. Our members are from all over the world, so we must use one language only.

Less people know Swedish than English. And Harry SM0VPO is an Englishman, although he has been living in Sweden for a long time. BTW, I am Czech.

73 Ivan OK1SIP

Ivan

Posts : 811
Join date : 2012-11-25
Age : 65
Location : Praha, Czechia

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Post by Pd0hni Wed Jun 05, 2024 2:21 pm

Tack Ivan,
Min svenska är lite rostig efter 60 år utomlands.

Pd0hni
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Post by Pd0hni Tue Jun 04, 2024 10:46 am

Hallo SM0VPO,


In deze hobby breng ik veel tijd door met amateur-tv, en vooral met digitale ATV. Nu heb ik onlangs ontdekt dat mijn stuurzender de nodige harmonischen uitzendt. Het werd al snel duidelijk dat ik hier een laagdoorlaatfilter moest plaatsen. Ik heb je rekenmachine gebruikt om te zien hoe en wat. Het enige wat ik niet kan vinden is hoe en hoe zit het met de spoelen? Welke diameter, aantal windingen en lengte heb ik nodig?
Ik heb weinig of geen ervaring op dit gebied, help me alstublieft.


English translation (by Google Translate, added by Ivan):
In this hobby I spend a lot of time with amateur TV, and especially with digital ATV. Now I recently discovered that my control transmitter emits the necessary harmonics. It quickly became clear that I had to place a low-pass filter here. I used your calculator to see how and what. The only thing I can't find is how and what about the coils? What diameter, number of turns and length do I need? I have little or no experience in this area, please help me.

Pd0hni
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