A visible-light image of the Andromeda Galaxy, taken by Torben Hansen.
CC Torben Hansen

Half-wave Dipole Aerial Tuned to 20 MHz

Half-wave Dipole Aerial Tuned to 20 MHz

This homemade half-wave dipole aerial tuned to 20 MHz was made by Derek Slater around 1964, to assist with tracking satellites.

Slater and Geoff Perry worked at the Kettering Grammar School together and shared an interest in space. They used borrowed and inexpensive equipment to teach their students how to track satellites. In the process of doing this, the Kettering Satellite Tracking Group was born - which in turn led to the discovery and announcement of a secret Soviet launch site at Plesetsk, securing the Group worldwide media attention.

This aerial was used in conjunction with a Marconi CR-100 Communications Receiver and, later, a Racal RA-217 Communications Receiver. It was central to tracking the HF (High Frequency) transmitting Soviet Cosmos satellites, Soyuz spacecraft, and the Salyut space stations. It was slung between the two highest buildings at the Kettering Grammar School (the main teaching block and the science teaching block).

More information

Object number

2014-16

Location

Off-site Storage

Has this object been into space?

No

Material

Plastic
Metal

Associated Organisation

Kettering Satellite Tracking Group

Associated Person

Slater, Derek
Perry, Geoffrey

Associated Place

Kettering

Object Production Date

Circa 1964

Object Production Place

Kettering

Object Production Person

Slater, Derek

Credit Line

Donated by Derek Slater

On Display Status

In storage

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Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.