| 20 MHz Dipole Aerial |
Reception of HF signals near 20 MHz
Suspended between the tops of Science Building and Main Building near classroom A5 - downward slope of 15-20 degrees towards Science Building
Maximum sensitivity in the NW and SE directions |
Constructed by Derek Slater |
Derek Slater Collection |
| 144 MHz CP Turnstile Beam Aerial |
Used by Derek Slater - initially to receive signals from ESSA metsats fordisplay/photograph on a laboratory oscilloscope
Later fitted to an equatorial mount constructed c1970 by the school metalwork/engineering department and moved to the roof of the main building for metsat reception |
Originally hand held and steered, usually by a pupil, using feedback of the signal via earphones, later the same method was used with the equatorial mount
Built and donated by Vic Hartopp of Jaybeam Ariels (Northampton), built as 144 MHz rather than the 136 MHz requested |
Aerial - Derek Slater Collection
Equatorial mounting - left in place on main building, lost in demolition |
| Discone Aerial |
Reception of VHF signals |
Constructed by Derek Slater from re-used copper pipe originating from his parents' redundant central heating system
Located on roof of Science Building
Was definitely in Tresham's possession 2007 December, current whereabouts unconfirmed |
Tresham Institute - in storage? |
| 2m, Three-element Yagi Aerial |
Reception of VHF signals |
Originally located on top of the Science Block with eletcrtrically operated rotator, the rotator was later removed because of unreliability
In 2000 it was still in place but one of the elements was missing
|
Tresham Institute - in storage?
Was definitely in Tresham's possession 2007 December, but current whereabouts unconfirmed |
