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Forum: Tech Log

6th Aug 2009, 14:27

Replies: 45

How harmful is Wx radar?

Views: 31,474

Posted By radeng

Way back when the world was young and the fields...

Way back when the world was young and the fields full of daisies and real beer was 1/3d a pint and even Watneys Red Barrel was palatable (yes it was - but they soon changed that!), radeng was an...

Forum: Tech Log

3rd Aug 2009, 20:46

Replies: 45

How harmful is Wx radar?

Views: 31,474

Posted By radeng

ChristiaanJ, Remember that we are talking of...

ChristiaanJ,

Remember that we are talking of a 10kW ERP pulse, with 20dB receiver antenna gain - and in all probability, antenna gain is nearer 30dB. So a perfect reflection at 200 miles would be...

Forum: Tech Log

3rd Aug 2009, 15:24

Replies: 45

How harmful is Wx radar?

Views: 31,474

Posted By radeng

Graybeard, Perhaps not 'modern', but years...

Graybeard,

Perhaps not 'modern', but years ago I worked on one that used a Travelling Wave Tube with 275kV on the collector, was 13 feet long, water cooled, and lived in a concrete pit lined with...

Forum: Tech Log

3rd Aug 2009, 11:37

Replies: 45

How harmful is Wx radar?

Views: 31,474

Posted By radeng

I doubt very much that any modern equipment uses...

I doubt very much that any modern equipment uses tunnel diodes. Unlike other semiconductors, they have a limited life because of the very high doping density leading to further diffusion at room...

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