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CB Radio Action on Repairing Modifying & Service Alignment

9 Followers

CB Radio DIY Information on many Makes and Models including building Antennas for Citizens Band on 27MHz and SWL SDR ( Software Defined Radio ) Portable DIY (DO It Yourself ) WideBand Radio Scanner Components:- HARDWARE – Old Video Tape Case – = $ free modify by cutting Hole in front Lid to suit size of Android device inside. Any Phone or Small Tablet = $ 100 + – must have INCLUDED Software for OTG ( On The Go ) capability! (MOST have OTG Included) OTG adapter cable = $ 35 – with USB Socket for USB SDR Dongle and plug to go into Power Pack plus lead plug to suit your Device USB SDR Dongle = $40 to $65 of any type will work above 25MHz **RTL-SDR V3 Brand Genuine USB Dongle can go down to 1MHz with SDR++ Software for Android 5V DC Power Pack = $50 sized to fit in Video case with Phone / Tablet with socket for OTG cable. ANTENNA – The antenna is THE most important component of this build! The antenna must be able to be adjusted to suit the frequency of reception for ideal signal strength and clarity. Fortunately VHF (Example AIR Band on AM ) & UHF (Example UHF CB ) have short wavelengths and can be received with an antenna under two foot long so an old portable AM radio telescopic antenna is ideal and can be easily adjusted to best length to suit the frequency. HF Frequencies can be received with an attached very long piece of wire if close to the wavelength required. It can be amazing what can be heard in the HF spectrum from 1MHz to 30MHz including Ham, Marine, Weather, Aircraft, Military and Broadcast. SOFTWARE All SDR software suitable for Phone / Tablet is available FREE download from Google PlayStore The are many SDR programs for Android and the BEST by FAR, is SDR++ ! SDR++ is a very professional frequency monitoring software program based on a full featured P.C. capable product. Like all SDR Programs (apps) it can be a bit confusing at the start up because of its power and features but well worth learning.

IBM Selectric Maintenance & Repair Training Series

5 Followers

Introduction: The following program is a training series on the IBM Selectric Typewriter. It was produced by Audio Visuals Universal in the 1970s, and is no longer available. Originally, the series was sold as sets of audio cassettes and 35mm color slides. After decaying for decades, the entire series was digitized for download online in 2008. Credit is due to the following persons: Peter Brun - Initially purchased the series on ebay and was kind enough to make copies for digitization. Additionally, he digitized the slides and augmented their information. Bill Hicks - Digitized the audio cassettes and posted the series online for download. Jim Bigwood, Audio Supervisor @ Maryland Public Television - Generously offered the use of his facilities to digitize the audio cassettes. Table of Contents: 10-1A Positive Power: Operational Shaft 10-1B Positive Power: Printing Mechanism 10-2A Negative Power: Escapement, Tabulation, Backspace, Carrier Return 10-2B Manipulative Assignments 10-2C Dual Pitch: Selectric II 10-3A Input: Keyboard 10-4A Output: Printing Mechanism 10-4B Tilt & Rotate Adjustments 10-5A Sundry Mechanisms: Platen, Index, Fabric Ribbon 10-5B Correcting Tape Mechanism: Tech III Ribbon Mechanism Legal License: CreativeCommons Attribution-Noncommercial-Share Alike 3.0 Unported Essentially you are allowed: to Share — to copy, distribute and transmit the work to Remix — to adapt the work Under the following conditions: https://creativecommons.org/licenses/by-sa/4.0/

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