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Forum: Aviation History and Nostalgia

10th Oct 2017, 22:14

Replies: 32

Constellation Antenna

Views: 7,814

Posted By Wodrick

I42 you have read the wiki I expect. In this...

I42 you have read the wiki I expect. In this application they would be used as in the last line, not for measuring wavelength but as a tuned circuit in the oscillator. Not vast ¼ λ at 170 -230 Mhz...

Forum: Aviation History and Nostalgia

9th Oct 2017, 22:03

Replies: 32

Constellation Antenna

Views: 7,814

Posted By Wodrick

Early radio altimeters were not like the modern...

Early radio altimeters were not like the modern Doppler type devices but were true radar altimeters, pulse devices which had a much greater range. I only learnt about them at college, never met one...

Forum: Aviation History and Nostalgia

8th Oct 2017, 22:15

Replies: 32

Constellation Antenna

Views: 7,814

Posted By Wodrick

Localizer and Glide Slope are both horizontally...

Localizer and Glide Slope are both horizontally polarised, that would be the first antenna I have ever seen that was receiving horizontal polarisation with vertical elements.

Showing results 1 to 3 of 3