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Exhibits details 11a
Gemse receiver
The I.F.F. (IFF) ground receiver
was also operated in conjunction to EGON
Erstling-Gemse-Offensiv-Navigation
Measuring their own bearing and range by means of secundary radar technique
even various Nachtfee signals relied upon it.
Type number plate(lable or sticker) belonging to our newly obtained Gemse apparatus, Stock-number Ln 20930, construction drawing: 124 - 121 A-2; Hersteller 'eas' stood for Siemens and points to the actual manufacturer
It is known, that its concept originates from Gema
Bu 3 is the symmetric antenna connector
The hand-written number '928' might indicate a production tag- or lot number.
Gemse front panel
The two circular discs are the frequency tuning and for the sensitivity control. The construction has two advantages, that tuning is done only deliberately; and also allows tuning via a semi-watertight cover-panel. However, this later version was only used on ships.
Front panel being removed
The lower tuning is for setting frequency, the upper for sensitivity.
Viewing the left-hand side of the Gemse receiver
Left-hand side cover plate being taken off
Just down the single empty valve socket, we see the connection onto the wobble motor (Ferraris type, needing and additional 90° shifted voltage).
The right-hand side of the Gemse receiver, in particular meant for selecting the wobble-mode (wide- or small-band search)
Viewing the HF tuning section of the Gemse receiver
Please continue with: Exhibits-details 11b Fu Piel-E3