AN/URM-18

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An urm-18.png


Reference Materials

Adobe PDF icon.png Early General Radio Frequency Standard Manual


Adobe PDF icon.png Type 1100-A Frequency Standards


Adobe PDF icon.png Type 1105-A Frequency Measuring Equipment


Adobe PDF icon.png REP-693-1

Signal Corps Repair Standard
Multi-Vibrator Power Supply
O-122/URM-18
Project 4422D
Signal Corps Engineering Laboratories
Fort Monmouth, N.J.
31 May 1955
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