---
title: "More Hardware — Clock/Calendar Board by J.K. Audio"
type: "article"
slug: "more-hardware-clock-calendar-board-by-j-k-audio"
url: "http://localhost/article/more-hardware-clock-calendar-board-by-j-k-audio/"
markdown_url: "http://localhost/article/more-hardware-clock-calendar-board-by-j-k-audio.md"
published_at: "2026-03-12T23:29:51+00:00"
modified_at: "2026-03-12T23:29:52+00:00"
featured_image:
  url: "http://localhost/wp-content/uploads/2022/04/20230809-041332.jpg"
excerpt: "A review of the J.K. Audio JK-310 clock/calendar board ($59.95 from A&T) using an OKI MSM5832 chip with battery backup. Also covers the JK-330 Plug 'n Power (controls 8 appliances) and JK-320 signal converter add-ons."
category:
  - name: "Sinclair Users Network"
    slug: "sinclair-users-network"
    taxonomy: "category"
    url: "http://localhost/category/periodicals/sinclair-users-network/"
post_tag:
  - name: "Hardware review"
    slug: "hardware-review"
    taxonomy: "post_tag"
    url: "http://localhost/tag/hardware-review/"
  - name: "JK Audio"
    slug: "jk-audio"
    taxonomy: "post_tag"
    url: "http://localhost/tag/jk-audio/"
  - name: "TS 1000"
    slug: "ts1000"
    taxonomy: "post_tag"
    url: "http://localhost/tag/ts1000/"
model:
  - name: "Timex/Sinclair 1000"
    slug: "ts-1000"
    taxonomy: "model"
    url: "http://localhost/model/ts-1000/"
publication_r:
  id: 21559
  title: "Sinclair Users Network"
  type: "periodical"
  url: "http://localhost/periodical/sinclair-users-network/"
volume: "2"
issue: "2"
issues_articles:
  - id: 26559
    title: "Sinclair Users Network March 1983"
    type: "issue"
    url: "http://localhost/issue/sinclair-users-network-march-1983/"
pages: "21"
pubdate: "March 1983"
product_reviews:
  - id: 11592
    title: "310 I/O port with real time clock"
    type: "product"
    url: "http://localhost/product/310-i-o-port-with-real-time-clock/"
  - id: 11595
    title: "320 A to D and D to A converter"
    type: "product"
    url: "http://localhost/product/320-a-to-d-and-d-to-a-converter/"
  - id: 11601
    title: "330 Wireless control system"
    type: "product"
    url: "http://localhost/product/330-wireless-control-system/"
archive_link: false
---

# More Hardware — Clock/Calendar Board by J.K. Audio

A review of the J.K. Audio JK-310 clock/calendar board ($59.95 from A&T) using an OKI MSM5832 chip with battery backup. Also covers the JK-330 Plug ‘n Power (controls 8 appliances) and JK-320 signal converter add-ons.