The radios labelled as "Multi-System" were designed to receive all of the
AM Stereo systems used prior to 1993, including Motorola (C-Quam), Kahn,
Harris, and Magnavox. See the History page for
more information on these systems.
Audio Design Associates (ADA) MT-3000 - Tuner
with Expanded Band coverage, selectable Narrow and Wide bandwidth modes and
Noise Blanking; AMAX certified, uses the Motorola MC13022 C-Quam AM Stereo
decoder chip with Stereo Blend feature.
Carver 2000 Professional Series - Tuner
with Expanded Band coverage and selectable Narrow and Wide bandwidth modes
Carver MRX-130 - Tuner with Expanded Band coverage and selectable Narrow and Wide bandwidth modes
Carver TX-11a - Tuner with Expanded Band, selectable Narrow and Wide bandwidth modes, and selectable De-Emphasis and Noise Blanking; AMAX certified (20 - 15,000 Hz audio response in Wide bandwidth mode!)
Carver TX-11b - Same features and design as TX-11a above
Carver PSB-11 - Same features and design as TX-11a above
NOTE that the regular Carver TX-11 model (no letter suffix) is an FM-only tuner, with no AM band at all!
Denon TU-680NAB - Tuner with Expanded Band,
selectable Narrow and Wide bandwidth modes and Noise Blanking; AMAX certified,
uses the Motorola MC13022 C-Quam AM Stereo decoder chip with Stereo Blend
feature. This tuner was introduced in 1993 to demonstrate the performance of
the "AMAX" AM Stereo receiver certification. Along with the Carver tuners
above, it is one of the highest-fidelity AM Stereo tuners ever made.
Fanfare Electronics FTA-100 - A brand new
professional quality tuner with AMAX-certified AM Stereo using the Motorola
MC13022 C-Quam decoder chip. This model has just been introduced by Fanfare,
but the price tag is a bit high because of its very high quality. For more
information, see Fanfare's web site.
J.C. Penney/Modular Component System (MCS) MCS-2275,
MCS-2276, MCS-2277 - Home stereo component systems, manufactured in the 1980s
using the Motorola MC13020 C-Quam AM Stereo decoder chip.
J.C. Penney/Modular Component System (MCS) MCS-3050 - Tuner manufactured in the 1980s using the MC13020 chip.
Japan Radio Company (JRC) NRD-545 DSP - Communications
receiver with AM Stereo support in its Synchronous Detection mode, featuring
Digital Signal Processing (DSP) for lower noise and better reception. The
AM Stereo feature works across the NRD-545's tuning range, in the Longwave
and Shortwave bands as well as the normal AM broadcast band.
NOTE: Many communications receivers, such as the Sony ICF-2001D / ICF-2010 and the Grundig Satellit 500 and 700, also use an AM Stereo decoder chip in order to provide Synchronous Detection mode, however only the JRC listed above allows you to directly access the Stereo audio output of the AM Stereo decoder chip. Instructions on how to easily modify the Sony ICF-2010 (also known as the ICF-2001D, which is the same radio but with a different model number) to provide an AM Stereo audio output can be read by clicking here.
Marantz SR-940 - Receiver, manufactured
from 1984 to 1987 using the Motorola MC13020 C-Quam AM Stereo decoder chip.
NOTE that the similar Marantz SR-440, SR-640, and SR-840 receiver models were designed for AM Stereo but were sold without the necessary AM Stereo decoder module installed. This module, called the "AMS40" (Marantz part number AMS-569), could be purchased from a Marantz dealer in order to add true AM Stereo capability to these models. The SR-940 came in three colors: black, silver, and gold. Here is the silver version:
And here's the SR-640 (with optional AM Stereo):
Marantz SR-840 / SR-940 specifications (PDF)