---
title: "Modaptor Plus problems"
type: "article"
slug: "modaptor-plus-problems"
url: "http://localhost/article/modaptor-plus-problems/"
markdown_url: "http://localhost/article/modaptor-plus-problems.md"
published_at: "2026-01-20T01:13:35+00:00"
modified_at: "2026-01-20T01:13:36+00:00"
featured_image:
  url: "http://localhost/wp-content/uploads/2022/04/20230809-041332.jpg"
excerpt: "In looking through the manual of Q-code, I discovered a section on controlling the Modaptor Plus. It says that the modaptor can be controlled by sending a series of signals to pin 2 of the SER 2 port (TX line)."
category:
  - name: "CATS Newsletter"
    slug: "cats-newsletter"
    taxonomy: "category"
    url: "http://localhost/category/periodicals/cats-newsletter/"
post_tag:
  - name: "QL"
    slug: "ql"
    taxonomy: "post_tag"
    url: "http://localhost/tag/ql/"
model:
  - name: "Sinclair QL"
    slug: "sinclair-ql"
    taxonomy: "model"
    url: "http://localhost/model/sinclair-ql/"
indiv:
  - name: "Stephen Jonke"
    slug: "stephen-jonke"
    taxonomy: "indiv"
    url: "http://localhost/indiv/stephen-jonke/"
publication_r:
  id: 35941
  title: "CATS Newsletter"
  type: "periodical"
  url: "http://localhost/periodical/cats-newsletter/"
authors_r:
  - name: "Stephen Jonke"
    slug: "stephen-jonke"
    taxonomy: "indiv"
    url: "http://localhost/indiv/stephen-jonke/"
volume: "7"
issue: "1"
issues_articles:
  - id: 38889
    title: "CATS v7 n1"
    type: "issue"
    url: "http://localhost/issue/cats-v7-n1/"
pages: "4"
pubdate: "May 1989"
archive_link: false
---

# Modaptor Plus problems

In looking through the manual of Q-code, I discovered a section on controlling the Modaptor Plus. It says that the modaptor can be controlled by sending a series of signals to pin 2 of the SER 2 port (TX line).