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2

This phrase right here: The antenna tracks by using electronic conical scan Isn't entirely helpful. Electronic conical scan was a thing in radar, a sort of intermediate step between lobe switching (also known as sequential lobing) and monopulse techniques. As far as I can tell, the CSM USB radio used a sort of half-way house that one source referred to ...


4

To question about four antennas of the B-529 system: "Is it possible to understand exactly how this worked?" In fig. 5 is a diagram of the analog formation of the B-529 antenna system of the total difference signals of linear polarization separately for vertical and horizontal polarization. There are two stages of signal addition, and in-phase signals are ...


1

KRT-10 radiotelescope on Salyut-6 The KRT-10 radio telescope consisted of a 10-meter diameter parabolic mesh antenna. Радиотелескоп КРТ-10 состоял из зеркальной параболической сетчатой антенны диаметром 10 метров. The main mirror KRT-10 was a hexagonal die cut from a paraboloid of revolution. The mirror frame consisted of diagonal rods of aluminum ...


0

From the perspective of electromagnetism alone, so long as the holes in the mesh are much smaller than the wavelength of the electromagnetic radiation to be reflected, there isn't much of a difference between a mesh antenna and a solid antenna. The radiation cannot get through the small holes. This is, for example, why one should stay in ones car during a ...


3

Galileo's troubled high gain antenna was made from "a gold-plated molybdenum wire mesh stretched across 18 graphite-epoxy support ribs". It was a copy of a TDRSS antenna, and after its long storage / trajectory rework / redesign / launch history, failed to deploy fully. This resulted in data transmission rates much, much slower than designed. ...


2

Based on @OrganicMarble's answer I did some further reading. @William-Rem's comment asks: Is that a quadrafilar antenna with... a ground plane?" and the answer appears to be yes; the four rods pointing radially below the quadrafilar "cloverleaf" are labeled as a ground plane in Figure 6. As @OrganicMarble already points out, the VHF antennas were used ...


16

It's one of the VHF antennae. Locations shown here. 1st image from here: http://www.ninfinger.org/karld/My%20Space%20Museum/pjlmpics.htm 2nd image from here: https://www.hq.nasa.gov/alsj/a11/LM5Structures.gif This document https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20090015392.pdf shows that VHF was used for comm between the CM and LEM, and ...


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