[time-nuts] HP 59309A Digital Clock (HP-IB)

[Gregory Beat]

Looking for the HP 59309A Clock, that originally sold in 1970s (1974-1978),
for your HP Test Suite (HP-IB) or Time-Nuts Lab?
http://www.leapsecond.com/museum/hp59309a/hp59309a.htm
Accepts an external Clock reference (1, 5, or 10 MHz, switchable)
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One has appeared on eBay, from solanotraders (known New Mexico surplus dealer),
eBay auction number: 194344200155
==
References for Refresh and Maintenance of the HP 59309A Digital Clock
=> Safety Capacitors on AC Input, Electrolytic change, Battery Leakage. <=

Cleaning up a HP 59309A Digital Clock
by Glitch Works
November 18, 2020
http://www.glitchwrks.com/2020/11/18/hp-59309a-digital-clock

DIY Building the Matching HP K10-599992A Battery Backup.
by Mark Greco (HP Museum Forum)
May 2021
https://www.hpmuseum.org/forum/thread-16865.html

Andrew Bukosêk (Slovenia)
Manual links, photos
https://bukosek.si/hardware/collection/hp-59309a.html

Communicating with the HP 39509A HP-IB Digital Clock
using a HP-IB (GPIB) to USB interface from LQ Electronics, called the UG Simple
by Dan Veeneman
http://www.decodesystems.com/hp59309-code.html

Struggling with Basic Component Level troubleshooting (July 2021)
https://groups.io/g/HP-Agilent-Keysight-equipment/topic/hp_59309a_digital_clock/84049857

greg, w9gb