Es’hail-2 & 2.4Ghz uplink Helical Feed from Winkler

Latest News and Discussion about the use of the DATV transponder on Es'hail-2
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G4IUG
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Es’hail-2 & 2.4Ghz uplink Helical Feed from Winkler

Post by G4IUG » Sat Jan 26, 2019 3:47 pm

Image
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Es’hail-2 & 2.4Ghz uplink Helical Feed from Winkler

Testing this using a Narda 1.7-4.2Ghz directional coupler, a HP 8566B analyser and a G4FAW tracking generator, gives a broad untuned return loss of less than 5dB. The insides look like the attached image.

This feed features on a PowerPoint that pushed this satellite.

Any suggestions or comments ?

Thanks

Dave G4IUG
Ex G6ANG/T and G8EAO

g0mjw
Posts: 1172
Joined: Sat Sep 20, 2014 9:15 am

Re: Es’hail-2 & 2.4Ghz uplink Helical Feed from Winkler

Post by g0mjw » Sat Jan 26, 2019 3:51 pm

Seems a bit long for a feed but you need you adjust the matching probably. Small changes are important at 2.4 GHz.

Mike

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