---
title: "Input/Output"
type: "article"
slug: "input-output-69"
url: "http://localhost/article/input-output-69/"
markdown_url: "http://localhost/article/input-output-69.md"
published_at: "2026-03-12T23:30:50+00:00"
modified_at: "2026-03-12T23:30:50+00:00"
featured_image:
  url: "http://localhost/wp-content/uploads/2022/04/20230809-041332.jpg"
excerpt: "A letters column with member tips: PAUSE vs. FOR-NEXT delays (Ken Williams), UHF modulator replacement and compiler recommendation (Ken Duda), HOT Z praise (John Weilandt), Gladstone Electronics complaint (Mark Walthen), pre-recorded software GOTO fix (Jim Johnston), heat sink mod, PEEK memory routine (Dr. Larry Kelly), power supply plug fix (Frank Peterson), cassette tips, ZX-81 parts…"
category:
  - name: "Sinclair Users Network"
    slug: "sinclair-users-network"
    taxonomy: "category"
    url: "http://localhost/category/periodicals/sinclair-users-network/"
post_tag:
  - name: "BASIC (programming language)"
    slug: "basic-programming-language"
    taxonomy: "post_tag"
    url: "http://localhost/tag/basic-programming-language/"
  - name: "TS 1000"
    slug: "ts1000"
    taxonomy: "post_tag"
    url: "http://localhost/tag/ts1000/"
  - name: "Type-in program"
    slug: "type-in-program"
    taxonomy: "post_tag"
    url: "http://localhost/tag/type-in-program/"
model:
  - name: "Timex/Sinclair 1000"
    slug: "ts-1000"
    taxonomy: "model"
    url: "http://localhost/model/ts-1000/"
indiv:
  - name: "Bob Smith"
    slug: "bob-smith"
    taxonomy: "indiv"
    url: "http://localhost/indiv/bob-smith/"
  - name: "Frank Peterson"
    slug: "frank-peterson"
    taxonomy: "indiv"
    url: "http://localhost/indiv/frank-peterson/"
  - name: "Jim Johnston"
    slug: "jim-johnston"
    taxonomy: "indiv"
    url: "http://localhost/indiv/jim-johnston/"
  - name: "John Weilandt"
    slug: "john-weilandt"
    taxonomy: "indiv"
    url: "http://localhost/indiv/john-weilandt/"
  - name: "Ken Duda"
    slug: "ken-duda"
    taxonomy: "indiv"
    url: "http://localhost/indiv/ken-duda/"
  - name: "Ken Williams"
    slug: "ken-williams"
    taxonomy: "indiv"
    url: "http://localhost/indiv/ken-williams/"
  - name: "Mark Walthen"
    slug: "mark-walthen"
    taxonomy: "indiv"
    url: "http://localhost/indiv/mark-walthen/"
publication_r:
  id: 21559
  title: "Sinclair Users Network"
  type: "periodical"
  url: "http://localhost/periodical/sinclair-users-network/"
authors_r:
  - name: "Ken Williams"
    slug: "ken-williams"
    taxonomy: "indiv"
    url: "http://localhost/indiv/ken-williams/"
  - name: "Ken Duda"
    slug: "ken-duda"
    taxonomy: "indiv"
    url: "http://localhost/indiv/ken-duda/"
  - name: "John Weilandt"
    slug: "john-weilandt"
    taxonomy: "indiv"
    url: "http://localhost/indiv/john-weilandt/"
  - name: "Mark Walthen"
    slug: "mark-walthen"
    taxonomy: "indiv"
    url: "http://localhost/indiv/mark-walthen/"
  - name: "Jim Johnston"
    slug: "jim-johnston"
    taxonomy: "indiv"
    url: "http://localhost/indiv/jim-johnston/"
  - name: "Frank Peterson"
    slug: "frank-peterson"
    taxonomy: "indiv"
    url: "http://localhost/indiv/frank-peterson/"
  - name: "Bob Smith"
    slug: "bob-smith"
    taxonomy: "indiv"
    url: "http://localhost/indiv/bob-smith/"
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: "4"
pubdate: "March 1983"
archive_link: false
---

# Input/Output

A letters column with member tips: PAUSE vs. FOR-NEXT delays (Ken Williams), UHF modulator replacement and compiler recommendation (Ken Duda), HOT Z praise (John Weilandt), Gladstone Electronics complaint (Mark Walthen), pre-recorded software GOTO fix (Jim Johnston), heat sink mod, PEEK memory routine (Dr. Larry Kelly), power supply plug fix (Frank Peterson), cassette tips, ZX-81 parts prices, and a stop-watch program (Bob Smith).