Pressure Gradient Double (PGD) Ribbon Microphone No. 4
- Made:
- 1950-60
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Pressure Gradient Double (PGD) ribbon microphone No. 4 in fitted wooden box, 1950-60.
The PGD microphones were BBC Research Department prototypes. Never put into commercial production, the PGD had a double magnet, making it more sensitive than the PGS microphone (which had a single magnet). The BBC used at least one in Broadcasting House in the 1950s and 1960s. The PGS was later sold under licence by STC as the STC 4038.
Details
- Category:
- Television
- Collection:
- BBC Heritage Collection
- Object Number:
- 2012-5118/650
- Materials:
- metal (unknown), electronic components and wood (unidentified)
- Measurements:
-
overall: 87 mm x 357 mm x 170 mm, 4 kg
- type:
- microphone
