Photo gallery of 12-July-2001 of Artjävi Telecom Society activities Photo gallery of 12-July-2001 of Artjävi Telecom Society activities

Photo gallery of 12-July-2001 of Artjävi Telecom Society activities

6 meter (50 MHz) station with FT-817 radio in (lead-acid-)battery driven mode.

Studying the 13.7 meter dish back-side support trusses

The cassegrain-reflector support arm ends

Analysis of these photographs gives an idea that the angle in between opposing support arms is 120o.

Length of these support arms along the mid-line from fixture bolt hole at the dish interface to the focal axis is 7251±5 mm.

Back-side support trusses, and detail photos

Analysis of measurements gives an impression that the height (along the focal axis) from rear-end fixture blocks to the top edges of the reflector support structure is about 3.8 meters. That gives us some idea of what is needed for constructing the dish.

Measurements are here.

Counting things around

All the sudden we decided to assemble one pair of the back-side trusses:

Matti Aarnio <matti.aarnio@zmailer.org>; OH2MQK