I was involved with many GPSDO projects, so some how gathered few of HP/Agilent/Keysight 53131A Counters. I have way too many and also 53132A. So guess if some need its or want it then, i am letting few go here. I have used this unit since two years without any issue. Upgraded to both Option 012 Ultra stable OCXO and 3Ghz option, Clean PCB and Power Supply , VFD is has seen some hours of operations. Images are attached to know exact condition.
Shipping to any country is possible, excluding few. Shipping charge within Germany are included in the price. While shipping to other EU or Non EU country is subject to a little additional charge
Option board are made for my own use , with top quality components and High quality Amphnol BNC cable assembly for 3Ghz option.
more details about OCXO options and 3Ghz options can be found on my blog.
https://www.circuitvalley.com/2018/07/agilent-53132a-53131a-ocxo-ultra-high-stability-oven-time-base-upgrade-option-open-source.htmlhttps://www.circuitvalley.com/2018/08/agilent-53132a-53131a-diy-open-source-3ghz-channel-option-030-board-hp.htmlUnit can also be bought without both of the options. If you are interested without the options, then let me know. I do have few of both OCXO and 3Ghz options boards , if you feel you need them to upgrade your own instrument, please let me know.
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