The seller of the 5650A I purchased has come back to me with following information: FE‑5650A (Rubidium Frequency Standard, DB‑9 Connector, CPOM / Opt‑58) 1. DB‑9 Pin Assignment (DB9 Male…
The oscilloscope inputs use BNC and my RF devices mostly have SMA, including my new rubidium time source, which I am currently testing.
WHY DOPPLER SHIFT OCCURS IN 1420 MHz HYDROGEN OBSERVATIONS Neutral atomic hydrogen (HI) emits its famous spectral line at: 1420.40575 MHz However, hydrogen gas in our Galaxy is moving relative…
https://www.astronomy.me.uk/wp-content/uploads/2026/09/Ayusthman-Tripathi-presentation-BAA-H-Line-meeting-070926.pdf
The official February 1998 FEI FE-5650A manual gives the following option numbers. Importantly, these are options that could be combined, rather than 40 completely separate models. Option FE-5650A variant /…
Produced for me by ChatGPT – I do not know its accuracy. In addition, there are many variants of the 5650A so you need to find way to confirm layout…
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