• RK5640.jpg
  • RK5640.jpg
  • RK5640.jpg
  • RK5640.jpg

RoadKing RK5640 40 Channel CB Radio with USB Port and RK56NC Mic

Roadking RK5640

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Hassle-Free Warranty & Easy Returns

At Walcott Radio, we want you to shop with confidence! That's why we offer a straightforward warranty and a stress-free return policy to ensure you're satisfied with your purchase.

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  • Changed your mind? No problem! Return unused, unopened, and unmodified products within 30 days for a refund.
  • Some items like batteries, used/refurbished products, and custom modifications are non-refundable.

Reliable Warranty - We've Got You Covered

  • Enjoy 90 days of coverage against manufacturer defects.
  • If something isn't right, we'll help troubleshoot, and if needed, we will arrange for inspection, repair, or replacement

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  • Need Help? Our experts are just a phone call or email away!
  • We work hard to make sure every product performs at its best - because we care about your experience.

For full details, check out our Warranty & Return Policy

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CB Radio Technicians since 1986

Unlock the full potential of your radio with our in-house radio technican upgrade services. Don't leave any potential for performance on the table, and ensure your new radio equipment has been thoroughly tested and verified to operate at it's maximum potential.

Improved Range & Clarity

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Optimized for Ehanced Usability

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Discontinued
Check out this replacement item

RK5640 - Blue Lights Abound! Road King radio with Road King microphone. Loaded with features. SWR meter.

Product Highlights
  • Includes RK56 Noise Canceling Mic
  • Blue LED Backlit Control Knobs
  • Front Mounted USB Jack For Charging
View all features
Cobra 29 LTD Nightwatch Classic CB Radio with AM / FM Modes and Faceplate Illumination
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  • Description

RK5640 - Blue Lights Abound! Road King radio with Road King microphone. Loaded with features. SWR meter.

New from Road King is the RK5640 CB radio. It comes prepackaged with their popular RK56 noise canceling microphone which normally sell for around $60 by themselves. The radio is compact enough to fit into most cubby holes in semi trucks. Built in SWR meter to help tune in your vehicles antenna system, and an SWR alert light to tell you if there's a problem with the antenna system. Comes with a front mounted USB jack to help charge devices such as a cell phone or bluetooth headset.

RK5640 Features

  • Front panel 2.1 Amp USB port to use and charge your portable devices
  • RK56 Noise-Canceling CB Microphone with chrome grill and button
  • Backlit control knobs with two brightness settings
  • SWR Calibration to fine tune the Perfect Match
  • RF Gain reduces sensitivity to distant noise and signals that are too weak
  • Squelch control eliminates background noise
  • Front panel 4-Pin CB microphone connector
  • Antenna warning indicator alerts of a problem with the antenna system

RK5640 Technical Specifications

ModesAM
Frequency Range26.965 ~ 27.405 MHz
Length8 3/4" from back of case to bezel
Length10 1/4" from antenna jack to control knobs
Width7 5/16"
Height2 3/16"
Current Draw2 Amp
Microphone Pin-OutStandard 4-Pin
Power Connection3-Pin Standard

Roadking RK5640 Reviews

Contact Us

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  • Walcott Radio
  • 2940 N Plainview Rd Walcott
  • Walcott, IA 52773
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  • Phone Support
  • 1-844-925-2688
  • M-F 10am to 5pm CST
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  • Store Hours
  • M-F 9am-6pm
  • Sat 9am-5pm
  • Sun Closed
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