Introduction
This SAMS Photofact Auto Radio Series AR-21 manual, published in November 1963, is a comprehensive technical reference for various automobile radio models from that era. It provides detailed information essential for the service, repair, and maintenance of these vintage car radios.
The manual spans 159 pages and is richly illustrated with schematics, parts lists, alignment instructions, and photographs of circuit boards. It is an invaluable resource for technicians, restorers, and enthusiasts working with classic car audio systems.
Manual Contents Overview
The SAMS Photofact series is renowned for its detailed technical documentation. This specific volume includes:
- Schematics: Detailed circuit diagrams for each covered radio model, illustrating the electrical connections and components.
- Parts Lists: Comprehensive lists of all components, including part numbers and descriptions, facilitating component replacement.
- Alignment Instructions: Step-by-step procedures for properly aligning the radio's circuits to ensure optimal performance.
- Circuit Board Photos: Visual aids showing the layout of components on the circuit boards, assisting in identification and troubleshooting.
Covered Auto Radio Models (Specifications)
This manual covers a wide range of auto radio models from various manufacturers. The following table provides a summary of the brands and specific models included in this AR-21 series, along with their respective starting page numbers within the manual.
| Trade Name | Model(s) | Page |
|---|---|---|
| Automatic | EM29 | 5 |
| Bendix | 38CH, 3CH2, 38CT | 9, 14 |
| Buick | 980663, 980626, 780635 | 19, 25 |
| Channel Master | 4500 | 34 |
| Chevrolet | 983886 | 39 |
| Continental | P3T8C | 48 |
| Firestone | 5-D-4 (Code 120-1-857), 3-D-5 (Code 120-1-869), 2-D-7 (Code 120-3-), DUF-431 | 57, 61, 65 |
| Mercury | P3T8M (CMY-1880) | 69, 78 |
| Metravox | Sutton RA155 | 83 |
| Mopar | 330, 331, 332, 333 | 91 |
| Motorola | 5AT-1, 12AT-1/-2/-3, 3201, 5307 | 100, 104, 108, 112 |
| Oldsmobile | 962212 | 116 |
| Pontiac | 983873, 983945 | 128, 130 |
| Renault | 27M3D (55558) | 139 |
| Riverside | FJR-6619/A, FJR-6808, FJR-155674 | 143, 147 |
| Studebaker | AC-3337, AC-3854, AC-3377 | 191 |
Visual Reference

Additional Information
This manual is a historical document providing technical insights into auto radio technology of the early 1960s. It is intended for those with technical expertise in electronics and radio repair.
Warranty and Support
As a vintage technical publication, this SAMS Photofact manual does not come with a manufacturer's warranty or direct product support. Its value lies in the historical and technical information it preserves.





