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The Motorola® Spectra™
Radio Index Page
Including non-mobile Spectra-based products
with some Astro Spectra stuff thrown in
Maintained by Robert W. Meister WA1MIK
This page has undergone a major reorganization.
Everything is all still here; items just got moved.
Use your browser's SEARCH function
to find things, as they're now grouped better.
If you don't see what you are looking for, don't forget to check Mike Blenderman's extensive Spectra site here.
Background, Introductory, and General Information:
|Motorola Spectra Introductory Information You should read this article before any of the other articles here in this section. It has an introduction to the Motorola Spectra radios, with background, history, some model-specific information, photos, and other miscellaneous tidbits.|
The Spectra Desktop Station by Robert W. Meister WA1MIK
What's inside, model number info, configuration switch settings, rear connectors, etc.
Setting Up and Using Multiple Coded Squelch (MPL) by Robert
W. Meister WA1MIK
The steps you need to do with the programming software to activate MPL, and how to use it.
Why a 900 MHz Spectra Won't Receive at 902 MHz and What You
Can't Do About It by Robert W. Meister WA1MIK
Spectras are great radios but they can't receive 902 MHz unless you have some specialized equipment and do a lot of work.
Spectra Error Codes by Robert W. Meister WA1MIK
A compilation of FAIL and ERROR codes that can be displayed by Spectra radios.
A Comparison of Old and New Spectra Circuit Boards
by Robert W. Meister WA1MIK
Photos and lists of the major differences between old and new versions of many Spectra circuit boards.
A List of Spectra Module (Board) Numbers by Robert
W. Meister WA1MIK
A summary of info extracted from a number of service manuals.
Identifying Spectra Frequency Ranges / Splits by
Mike Morris WA6ILQ
Photos and things to look for to help identify the range or band split of your radio.
Brochures and Manuals:
|Spectra Sales Brochure An original Motorola catalog sheet with abbreviated specifications. 674 kB PDF.|
|Spectra Motorcycle Spec Sheet An original Motorola spec sheet with photos and abbreviated specifications. 189 kB PDF.|
|Spectra Conventional Radio System Operator's Manual 4.1 MB PDF.|
|Spectra Privacy-Plus Radio System Operator's Manual 2.3 MB PDF.|
|Spectra SmartNet Radio System Operator's Manual 4.1 MB PDF.|
|Spectra Parts Catalog 1 MB PDF|
|Another Spectra Parts Catalog 240 kB PDF.|
|Info on the new Moto railroad locomotive cab radio based on the Astro Spectra. 140 kB PDF.|
|Spectra Clean-Cab Railroad Radio Operator's Manual 780 kB PDF.|
|DEK schematic 614 kB PDF.|
|Hand-Held Control Head Single and Dual Radio Instruction Manual Introductory information only for Option W845ASSP (dual radio) and Option W845AUSP (single radio) with HHCH, SIU, security boxes, etc. Scanned by WA1MIK. Goes with the dual radio article below. 2.8 MB PDF.|
|Astro Digital Spectra Consolette Instruction Manual 2.6 MB PDF.|
|Astro Digital Spectra Basic Service Manual 2.5 MB PDF.|
|Astro Digital Spectra Detailed Service Manual, part 1 of 4 Chapters 1-6. 2.5 MB PDF.|
|Astro Digital Spectra Detailed Service Manual, part 2 of 4 Chapter 7, pages 1-25. 3.7 MB PDF.|
|Astro Digital Spectra Detailed Service Manual, part 3 of 4 Chapter 7, pages 26-48. 8.1 MB PDF.|
|Astro Digital Spectra Detailed Service Manual, part 4 of 4 Chapter 7, pages 49-134 and appendices. 8.4 MB PDF.|
|Astro Digital Spectra Detailed Service Manual The entire manual as one 20.5 MB PDF file.|
Radio and Equipment Modification Articles:
|Spectra Dual Radio Configuration Procedure By Josh Wallace KD5QCZ. Goes with the HHCH PDF file above.|
|Recapping the Spectra Mobile (a.k.a. the Time-Bomb Capacitors) by Robert W. Meister WA1MIK|
|Recapping the Systems 9000 Control Head by Mark Tomany N9WYS|
|A great article on Recapping/Refurbishing the Spectra Mobile by David Rudd AI4JI (off-site link)|
|Build Your Own Spectra Low-power and Medium-power Programming Cable by Robert W. Meister WA1MIK|
|Build a Spectra Low-power and Medium-power DC Power Cable with Ignition Control by Robert W. Meister WA1MIK|
|How to Hex Edit the Spectra RSS to Enable 900 MHz Amateur Frequencies by Robert W. Meister WA1MIK|
|Spectra 900 MHz VCO Modification by Robert W. Meister WA1MIK|
|Spectra UHF VCO Modification by VK3KBC (off-site link)|
|Adding a Preamp to a UHF Spectra Radio by Robert W. Meister WA1MIK|
|Miscellaneous Spectra Topics by Robert W. Meister WA1MIK|
|Spectra Hacks (Bitbanging) by James S. Vooght K2JSV|
|Some notes on Replacing the Spectra MLM by Alex Cobleigh K6LPG|
|One approach to adding a COR Signal to the Spectra DB-15 Accessory Connector By Nick Markovich N2XFX|
|Spectra Control Head Ignition Jumper Information by Robert W. Meister WA1MIK|
|Interfacing External Equipment to the Spectra Mobile Radio by Robert W. Meister WA1MIK|
|Spectra Dash-mount Control Head Interconnect Boards by Robert W. Meister WA1MIK|
|Intro to Spectra Radio Configurations by Robert W. Meister WA1MIK|
|An Extension Cable for Repairing Dash-mount Control Heads by Robert W. Meister WA1MIK|
|Spectra Command Board Jumpers: Location and function by Robert W. Meister WA1MIK|
|Spectra Command Board to PA and Accessory Jack Cables by Robert W. Meister WA1MIK|
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This page was created in 2006.
This page was last updated on
Motorola, Spectra, Astro Spectra and a lot of other terms are registered trademarks/servicemarks of Motorola Inc.
This web page, this web site, the information presented in and on its pages and in these modifications and conversions is © Copyrighted 1995 and (date of last update) by Kevin Custer W3KKC and multiple originating authors. All Rights Reserved, including that of paper and web publication elsewhere.