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The SW210 AM-Broadcast Audio Processor
'Airchain' audio processing for all AM-radio
applications; from license-free, Part 15 experimenters, to ham radio,
to roadside/airport info messaging, to commercial AM and shortwave broadcasting.
SW210 Features
Independent inputs and outputs for studio-level feeds (+4dBu, XLR) and for consumer-level signals (–10dBV, 3.5mm TRS).
Improved 'gain-riding' AGC with intelligent response to both the program average level and peak content. Panel markings indicate action to take when the AGC nears the end of its range.
Automatic polarity inversion inaudibly optimizes program phase for maximum positive-going modulation.
Variable 'Articulation' adjustment with full range between flat response and one that favors voice intelligibility and 'talk power.'
Set variable program pre-emphasis to the NRSC spec, or use peaking curves for best use of the available transmis-sion bandwidth.
Adjustable bass-band turnover control helps establish best low-end effect for music, speech and mixed formats.
Extended Bass and High EQ help define your 'signature' sound.
Definitive LED readout of gain reduction for all three spec-trum divisions.
Positive modulation peaks may be set anywhere between +100% and +200% (regulations permitting), with respect to –100% negative peaks, with no forced negative peak clipping.
Steep output filter has a cutoff point that is continuously variable between 12.5kHz and 3kHz.
SW210 Documentation
SW210 Datasheet - Lists additional features and important specifications.
SW210 Instruction Manual - Become familiar with the installation, interconnection, setup and operation of the SW210.
Availability, pricing and shipping:
As of this writing (June 25, 2026), a limited number of units from our first, 'pilot' run are available to ship immediately. We are dedicated to keep the pipeline filled with follow-up production, and will continue to advise of that timing here.
The SW210 will initially be sold factory-direct-only at the introductory price of $580. Once, and if, the unit is later sold through distributors (which would include eBay listings), that price will necessarily have to be a bit higher to offset third-party selling expenses.
Historically, our previous SW200 sales through eBay carried automatic "buyer's/seller's protection," which indemnified both us and the buyer from loss or damage in transit. Although we have come to place 99% trust in the usual carriers (USPS, UPS, FedEx, DHL), factory-direct sales will automatically incur delivery insurance and signature cost in addition to shipping charges unless the buyer opts-out of this insurance at the time of order. Shipping expenses will always reflect just our cost; we don't believe in profiting on shipping.
SW210 Gallery:
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