Radio observation in hydrogen line (1420MHz)

Ptarmigan Triffid Dipole Array

Subject: RAG – Triffid Antenna

Hi Andy

I asked a former colleague from work to help identify your antenna.

He had direct oversight of the Ptarmigan and Triffid projects whilst I was working on unrelated projects.

He has confirmed that it is indeed a Triffid antenna.

It operates in what was known as military band 3 from 1350 to 1850 MHz as a ‘corner reflector’ design. Manufactured by Siemens and used to provide a radio relay in interconnect geographically dispersed nodes of the Ptarmigan system.

See you at future RAG meetings.

Regards

Dan

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