RDMW 2022 Launched!

North American broadcast mapping tool & database

We are proud to announce the launch of the latest edition of RDMW-2022. Now in its 9th year, RDMW comes with many new features and updated station data ready for 2022.

Radio Data Medium Wave (RDMW) allows you to see and map the coverage area of all medium wave (AM/MW) broadcast stations in North America including the USA and Canada.

Mapping coverage patterns of MW AM broadcast stations in North America using RDMW software and database from the Medium Wave Circle https://mwcircle.org
RDMW allows you make custom maps like this one – 870kHz reception in the UK

If you’ve ever wondered why a radio listener would be interested in the coverage patterns or maps of radio stations then you can find out more here.

New developments for 2022 include:

  • The latest callsign and technical data for all US and Canadian MW stations
  • Expansion to cover Mexico, Bahamas and the Caribbean for the first time
  • Expansion to cover 490kHz – 1700kHz; now includes MW Navtex stations
  • Addition of real-time night/day terminator (greyline)
  • “Click+Save” setting of your receiver location
  • Easy tuning control added to control bar
  • Easy daypart selector added to control bar
  • Ray tracing control added on a per station basis.
  • In-screen “Help” button

Knowledge drawn from RDMW has been fundamental in helping DXers further their craft and enjoy their hobby. It can help you plan your listening and help you target stations broadcasting from particular areas. Intelligence displayed by RDMW has helped European DXers plan and hear US stations over great distances – including so-called “daytimer DX” and transpolar propagation. The RDMW maps will also help you determine which stations you might hear on a particular channel, and which might be rather more elusive.

Drawing on the latest data from official sources, club sources and topped off with many days of extensive data checking and validation RDMW probably has the most comprehensive and up to date dataset for AM/MW broadcasting stations in North America. This data is combined with complex geophysical data and propagation modelling to provide you with extremely detailed coverage maps for both daytime groundwave and nighttime skywave coverage for around 5000 radio stations.

RDMW 2022 has been developed and tested by Bill Scott and Steve Whitt and is exclusively available from the Medium Wave Circle.

Download “Radio Data MW

Now that most people have broadband internet connections we can distribute Radio Data MW via the internet from the Circle website. You can order your personal copy by clicking the shopping cart button below.

For only £3, ~€4 or ~$4.50** you can have your own copy. You can pay with a Debit or Credit Card. Payment is through a PayPal gateway and is safe and secure. You do not need a PayPal account to use this facility. If you don’t have a Paypal account or have one and don’t want to use it then you can use the Paypal guest check-out where you can enter credit/debit card details. Prices are given in UK Sterling with approximate Euro and US Dollar equivalents. Paypal will convert to your home currency automatically. There is no surcharge for payment by PayPal.

Purchasing online is safe and secure using the Paypal gateway and you always have protection provided by Paypal and/or your credit card company. We do not collect or store any of your payment details.

Please respect the copyright of the content and do not reproduce, replicate or transmit the content in any form to anyone else; this program is intended for your own personal use. Commercial use is strictly forbidden!

VERY IMPORTANT: After payment is complete click the “Return to Seller” or “Return to Merchant” button and you will be directed to a page from where you can download Radio Data MW. Please note that this is delivered as a 60MB zip file to your computer or smartphone ready for you to enjoy immediately.

RDMW-2022 Edition

** your payment is a donation that helps cover the cost of bandwidth, our servers and the maintenance and security of the Circle’s website – thank you!