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Saturday, September 7, 2024

RDMW 2024 Mediumwave Pattern Reference

North American Broadcast Mapping Tool & Database

We are proud to announce the launch of the latest edition RDMW-2024 Medium Wave Pattern Reference.

The Radio Data Medium Wave (RDMW) mapping reference is the definitive and most up to date tool for visualizing the broadcasting coverage of radio stations in North America.

Latest features:

  • The latest callsign and technical data for all US and Canadian MW stations
  • Late summer database cutoff date of August 7, 2024
  • Seasonal ionospheric variations included in calculations, targeting October 20, 2024
  • Smoothed sunspot predictions included, targeting October 20, 2024
  • Current Mexico and selected Bahamas, Bermuda and Caribbean map pins
  • Coverage of 490kHz & 518kHz Navtex stations
  • Updated skywave formulas producing more accurate nighttime maps
  • Real-time night/day terminator (greyline)
  • “Click+Save” setting of your receiver location
  • Easy tuning control on control bar
  • Easy daypart selector on control bar
  • Ray tracing control available on a per station basis
  • Distance tooltips to all stations
  • In-screen “Help” button

Included is a complete set of GoogleMap-based, HTML-driven maps which show the most current pattern plots of all licensed US and Canadian mediumwave broadcast stations from 530 - 1700 KHz. Due to unavailability of Mexican technical data, Mexican stations are represented by pins only this year. Lastly, also included are a sample of Caribbean stations, and the coastal marine NAVTEX 490 Khz and 518 KHz stations. The set includes all frequencies for the indicated services: Unlimited, Daytime, Nighttime, and Critical Hours. Individual maps are grouped by channel frequency x10 kHz: 540, 550, 560, .. 1700 KHz, etc. Data for the plots in this offering is based on the current FCC and Industry Canada databases available at the time of its creation (August 7, 2024). In calculating signal strengths, seasonal ionospheric variations are accounted for as well as smoothed sunspot predictions, targeting October 20, 2024.

Bonus: When you get your copy of RDMW24 you will also receive a copy of William Scott’s interactive greyline mapping tool which overlays on Google Maps. Enjoy!

Click image for the bigger picture.

Daytime pattern example for WAQI-710

Ordering (follow the instructions on this page) https://mwcircle.org/radio-data-mw-rdmw-2024/

Europe's premier medium wave DX club, The Medium Wave Circle will be hosting the download. The Medium Wave Circle is an international club for radio enthusiasts. It brings together people all over the world with a similar interest in medium wave radio (MW, AM or BCB) and related topics.

A small fee will be charged to cover bandwidth costs, less than a price of a coffee. Paid membership in the club is not required. Payment is through a PayPal gateway and is safe and secure. You do not need a PayPal account to use this facility.

Click the link just below and get your copy today.

RDMW 2024 Medium Wave Pattern Reference – Medium Wave Circle (mwcircle.org)

https://mwcircle.org/radio-data-mw-rdmw-2024/

Consider supporting The Medium Wave Circle by joining. Its membership fee is a modest amount for a great return. You will also get access to the group's monthly newsletter, The Medium Wave News, published since 1954, and over 500 past copies of MWN available exclusively to members. This is a 70-90 page newsletter which comes out every month. You will also get access to the Circle archives and pre-publication discounts on the essential reference book the World Radio TV Handbook. Last but not least, you will have access to a great forum of friendly and helpful people on groups.io.

RDMW-24 LAUNCH DATE: 6th SEPTEMBER, 12:00 UTC

User help & FAQ: https://mwcircle.org/RDMW-24-user-guide/

Why MW radio patterns matter to DXers: https://mwcircle.org/north-american-mw-coverage-maps/

We hope you will enjoy this latest version of the Radio Data Medium Wave Pattern Reference. A few hundred hours have been spent this year enhancing the pattern generating program and curating the data. Best of DX!


2 comments:

Tom said...

Thanks very much for the RDMW 2024 Pattern maps and database.
Because i wanted to use these maps offline, i extracted the station and pattern data from the html files into smaller csv files. I then plotted the pattern maps for CONUS with a lat-long grid and with state lines using a stateline json file. I reused some code which i had written to plot radio tower using the FCC and FAA tower databases, all basic WIN32 code. This is only for my own offline use.
I am 76 and trying to get back into AM radio DXing. I was very active back in the 1960s, when RF interference from switching power supplies and digital appliances was nonexistent. That was the golden age of AM Radio, with WABC, WLS and KAAY playing top 40 hits, and John R playing R&B on WLAC.

RADIO-TIMETRAVELLER said...

Hi Tom. Nice work on getting the data extracted and displayed. We are the same age. Kudos to you. The brain work is difficult now for me.