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Radar/Aircraft main page |
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| Modulator Type 169 | Monitor Crystal Type 2 | Monitor Crystal Type 4A (Tropical) | Morse Buzzer Valve Type 2 | Morse Creed Keyboard Perforator 9 |
Monitor crystal type 4A.This unit was used to provide a test signal on one of five preset frequencies for setting the tuneable R1132A receivers to the required frequency. The frequency was controlled by quartz crystals and the crystal frequency was electronically multiplied by 18 to get the output frequency in the air band between 100Mc/s and 130Mc/s. Sec/Ref: 10T/573 |
=0390.jpg "click to get the large image") |
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Monitor Crystal Type 4A (Tropical) (Photograph Number 0390) Click on the image to get the full size image. |
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