THE EH-1000
After years of use and then storage once the analog Teletext television system was turned off yonks ago, I have finally gotten around to placing this professional, very well built equipment onto the workshop bench ... the "operation" has begun
This equipment was fully functioning but of no possible further use in our digital television (with no teletext broadcasts) era so now I have extracted components and modules "of interest" which can be used to restore another EH-1000 or think of this board as a "component farm" a place where some difficult (or impossible) spare parts may lurk ...
Sure, such a mundane piece of hardware but Oh so handy when that control shaft you have is just a little too short in length or it is desired to convert a metal control shaft to an insulated material such as nylon.
Here is some background technical info to the equipment this coupler was used in ...
THE DONOR EQUIPMENT
UNAOHM - Teletext Video RF Analyser
Model: EH-1000
Designed & manufactured in Milano, ITALY
Circa Late 1980's (based on advertisements placed in Wireless World at the time and the date stamp on the AC transformer core)
Technology: Analog video broadcast signal analysis - specifically for examining lines of Teletext information "riding along" with the video signal
Luggable (heavy at 15kg) due to the heavy duty Aluminium outer case but more importantly, the inside welded steel frame chassis inside.
Well engineered inside, logically laid out using a number of modules which are well interconnected.
Designed for 220V 50Hz operation (because of this, we used this equipment via an AC variac many years ago)
Green emitting rectangular CRT based front panel display
Interested in the technical nitty gritty? Here is an old copy of the spec sheet
The small piece of hardware I am offering ...
SHAFT COUPLER
Material: Aluminium
Part #Unknown
For use with 4mm diameter control shafts, suits either round or D shape
Two hex head grub screws used for securing the coupling and these are supplied of course
DIMENSIONS:
Coupler length: 13.5mm
Coupler diameter (external): 10.4mm
Coupler diameter (internal): 4mm
Threaded holes for the securing grub screws are at 2.8mm & 7.5mm distance from one each, meaning they have not been placed at equal distances from either end.
This coupling has now been safely packed away in a sealed clear plastic packet, awaiting a new purpose in life.
