Time & Frequency Rack
5110A Synthesizer Driver & 5100A Frequency Synthesizer
This is a synthesizer based on add, subtract, multiply NOT on PLL
methods. It is big and heavy, but has very fast coherent
switching and good phase noise. This model was used by BR
communications to develop their chirp
sounder.
107BR Quartz Oscillator
Has a cylindrical oscillator assembly that looks like the one made
by Sultzer Labs which was mentioned in the NRL book.....
117A VLF Comparator
A 60 kHz WWVB receiver with a phase comparison to an external 100
kHz signal both meter and paper strip.
113AR Frequency Divider and Clock
Takes a standard frequency input and divides it down to 1 PPS and
drives an analog clock running on a 1 kHz motor, very noisy.
HP Journal Nov-Dec 1959 Vol. 11 No. 3-4: A
New Clock for Improving the Accuracy of Local Frequency and Time
Standards -
HP Journal April 1960 Vol 11 No. 8-10: Utilizing
VLF Standard Broadcasts with the -hp- Frequency Divider Clock
-
HP 120 Oscilloscope
used with 114BR to see time comparison
114BR Time Comparator
Used with a 120B Oscilloscope and a WWV HF receiver to compare the 1
PPS output of a house standard with WWV. The thumb wheel
switches allow adding a time delay to the house standard to trigger
the scope to watch the phase of WWV (and WWVH at the same time is
it's there). inside
More T&F equipment in
another rack.
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