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PCBs and kits from my electronics projects, made in small batches. Each one is written up on the blog.

The black OCXO option PCB, with footprints for Oscilloquartz, Datum, Isotemp and Trimble OCXOs

53131A-010/GS OCXO option: bare PCB

£10.00 + postage (UK £2.50, worldwide £5.00 per order)

Bare PCB (Rev 1H) for the DIY high-stability timebase upgrade for HP/Agilent 53131A, 53132A and 53181A counters. Fits several common surplus OCXOs.

The bare board only: you supply the components and the OCXO. It has footprints for the Oscilloquartz 8663, Datum 105243, Isotemp OCXO131 and Trimble 34310-T, and the bill of materials, build notes and videos are in the article. The photo shows Rev 1F; boards supplied are Rev 1H.

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Up to 2 per order; for more, email me. Secure payment by card, Apple Pay or Google Pay through Stripe. Read the article

The assembled OCXO option board with a Trimble OCXO fitted

53131A-010/GS OCXO option: built and tested

£145.00 + postage (UK £10.00, worldwide £18.00 per order)

Fully assembled and tested board with a Trimble 34310-T double-oven OCXO, cable and mounting parts: a plug-in upgrade for 53100-series counters.

Built in small batches. All of the current batch has gone; email me if you would like one from the next.

Sold out Email me to hear when there are more.

Read the article

Ordering and delivery

  • Payment is through Stripe: card, Apple Pay or Google Pay. I never see your card details.
  • Postage is charged once per order and items are sent by Royal Mail, normally within a few working days.
  • Outside the UK, your country may charge import tax or duty on delivery; that is not included in the price.
  • You can cancel an order within 14 days of receiving it; return the item unused and I will refund you.
  • Questions, larger orders or problems: [email protected].