Brooke's Surplus Rack 2 page

2013 Photos

	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 (modification??) Frequency Divider & Clock Textron 559 VLF Tracking Receiver YouTube: HP 115 BR Frequency divider and digital clock, 1:14 - YouTube short: WWV Check, HP 115BR Divider and Clock - Part 1, 23:52 - H20 (10uS resolution) + Hxx (60 Hz output) = H27 HP 115BR Divider and Clock - Part 2, 38:25 - Also see the HP 113AR with analog hands type clock in the Time & Frequency Rack. HP 106B Double Ovenized Quartz Oscillator with dubious modifications, 38:55 - HP 115BR Divider and Clock - Part 3: Startup and Atomic Sync, 14:40 - Also see: Time & Frequency Rack: HP 5110 & 5100; 107BR, 117A WWVB comparator, 113AR Clock, 120 Scope Time & Frequency Test Equipment: Gibbs Xtal Osc, SR SC10, SR PRS10 Rb, HP53132A Counter, SR620, HP 33120A, SR DG535, HP 54501 scope Rack1: receivers
	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).

2001 Photo

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.

EEC 880A VLF Receiver Patent 3163823 Digital Receiver Tuning System Dec 29, 1964 Class 455/182.1

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.