|HP 8406A Frequency & Comb Generator
HP 3400A RMS Voltmeter - Geller Labs
HP 432A Power Meter
HP 3730A Down Converter
HP 3736A Oscillator
|HP 115BR HO3 Frequency Divider & Clock
Textron 559 VLF Tracking Receiver
|EEC 880 VLF Tracking Receiver
EEC 881-M VLF Tracking Receiver
|FRR-21 LF Receiver 14.5-600 kHz
HP 5345A Counter
HP 3555A Automatic Frequency Converter
AN/FRR-21 Navy VLF Receiver 14 - 600 Khz.
|SRR-13 HF Receiver 2-32 MHz
SRR-13A by Josh Rovero, KK1D
US Navy LF & VLF Receivers - 1950's
YouTube - USN SRR-13 HF Receiver Demonstration
An application would be receiving weather fax.
Using the CV-172/U (Navy-radio) fax signal converter and RD-92/UX drum fax machine (WU Desk FAX).
Magnecord 1024 Tape Recorder
HO3 115BR Frequency Divider and Digital Clock
This is very similar to the 113AR except it has an odometer wheel type clock with contacts on the wheels to provide a digital output. There are a huge number of contacts on the back.
Textran 599 VLF Tracking Receiver
EEC 880A VLF Receiver Patent 3163823
Digital Receiver Tuning System Dec 29, 1964 Class 455/182.1
EEC 881-M VLF Receiver
AN/FRR-21 14-600 kHz Receiver
Prior to getting the NRD-545, this receiver produced the strongest signals from WWVB. Sounded like a hammer pounding.
Digitech RTTY Tester
AN/SRR-13 2-32 MHz Receiver
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