BK Technologies (Relm) SDMX921-O2-2

BK Technologies (Relm) > Repeaters conventional UHF

Rack Mount P25 Digital UHF Base Station / Repeater, 435-470 MHz, 2 W, 25kHz / 12.5 kHz, 255 Channels

Low power consumption, continuous duty, flex.mode, built-in test equipment, Plug and Play, Low current option included. With LZAST92 P25 option module

Microphones and options sold separately

Customer Rating:

Item SKU Number: 181138

Manufacturer Part Number: SDMX921O22, SDMX921 O2 2, SDMX921-O2-2

FCA point / Shipped from: USA

Manufacturer Warranty: 2 years

Download Free Materials:

RelmBK_SMX920_series_radios.pdf (252.81 KB)

Item Details:

RELM (Bendix King) SMX921 Analog Repeater/Base Station

Designed from the ground up for the absolute lowest possible power consumption, the RELM/BK SMX921 features the lowest current draw of any professional high-performance repeater/base station among comparable products in today's marketplace.

Advanced circuit design and optimization enable extraordinary RF performance few competing products can provide whatever their power consumption.

* Lowest power consumption enables unique solar power option (58 mA)
* 148-174 MHz VHF, 400-520 MHz UHF, multiple ranges
* 255 channels
* System product - continuous duty
* 13.8 volts DC or 110 volts AC - low power consumption, optional battery back-up (lasts forever)
* 1-50 watts programmable RF power
* Flex-Mode per-channel narrowband/wideband channel spacing
* Built-in test equipment (BITE)
* Internal duplexer option
* More software control of main board functions, elimination of manual pots and jumpers
* Simple set-up, plug and play

Manufacturer's Catalogs and Guides:

These files contain information about the available products from the manufacturer. If you need something that is not on our website, please contact us. We will help you purchase the desired product at a low price.

BKR & KNG Accessory Catalog

Published Date: August 2025

BK Technologies BKR Accessory Catalog 2022.pdf

BKR Accessory Catalog

Published Date: March 2022

BK Technologies All Products Catalog

Published Date: April 2025

BK Technologies is deeply rooted in the public safety radios and communications Industry and manufactures high specification communications equipment of unsurpassed reliability and value for use by public safety professionals and government agencies, as well as radios for use in a wide range of commercial and industrial applications. Advances include a broad new line of leading digital two-way radios compliant with APCO Project 25 specifications.

BK Technologies two-way radios always incorporates the latest technology. The quality and function of the BK Technologies two-way radio can meet your demands for reliable communication. BK Technologies' products are manufactured and distributed worldwide under Bendix King and Relm brand names.

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