I've used a quadrifilar helix like the weather satellite versions intended for 137 MHz satellites. Also a 3 element cubical quad and a 3 element crossed yagi in X format, with separate receivers for polarisation diversity.
I tried tilting the QFH towards Dijon, but it didn't make much difference. I also use a 9 element yagi, but it is way too sharp. The extra gain does help pull out really weak echoes, or when I'm tracking the GRAVES echoes from the International Space Station.
HB9CV and Yagis with a gamma match have the disadvantage that they need a tuning capacitor, which is tough to weatherproof, even if you replace the variable capacitor with a fixed one of the correct value. The HB9CV is a variation on the ZL Special.
Neil
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On 22 Feb 2025, at 22:20, Andrew Thornett via groups.io <andrew@...> wrote:
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Found it now ¨C we all used to use
HB9CV Aerials. They seem to have gone out of fashion for meteor scatter from Graves now ¨C don¡¯t know why ¨C perhaps someone can tell me?
Andy
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Thanks Chris.
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Years ago, there was a different off the shelf aerial used to be commonly used ¨C I can¡¯t remember what it used to be called.
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Andy
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I use a homemade 3 element Yagi, based on Paul Hyde's one from 'Sky at Night' magazine in 2014 and currently available on the BAA website via:
Chris
On 22/02/2025 16:20, Andrew Thornett via groups.io wrote:
What are the different types of aerials recommended for 143Mhz meteor scatter? I would like a list to add to my talk. I use a Moxon but I know there are other types
