Category: Avionics

Here I have a PRS-2026C Data Retrieval unit which is part of the GEC-Marconi (formerly Plessey Avionics) ESD2020 system used for fault diagnosis and servicing of the Harrier GR5 and the AV8B aircraft. These are no longer used by the air force and find themselves onto eBay and other military surplus sites. I was donated […]

More aircraft avionics to take a look at again. This time we have a Global NDB-2 which is an optional unit for the GNS-500A navigation system commonly fitted to private business jets. This unit is a “databank” containing coordinates and other information for over 20,000 airports and airfields worldwide. It consists of a main unit […]

In a various spending spree of avionics I bought on eBay I have a radio control box for a Plessey PTR-1751 military radio, a common unit used in several aircraft including helicopters during the 1980s and 1990’s. The radio has 7000 channels across 25khz intervals as well as AM reception on 243Mhz for emergency use. […]

Whilst I was on covid lockdown I bought several avionics parts with the intention of making teardown videos and seeing if I could possibly power them up. If you are a frequent visitor to this site and / or my YouTube channel then you will already know this but for new visitors please check my […]

I obtained another interesting piece of aircraft avionics – this time a symbol generator computer that is used for generating the graphics and video signals for the CRT displays in the cockpit. From what I can gather there is typically 2-3 of these units in the aircraft with each symbol generator driving two displays so […]