RadioLookup Transmitter FinderThis application produces a list of broadcast transmitters near to a specific location. Ofcom produce a resource known as Technical Parameters which offers AM, DAB and FM transmitter data (such as location, ERP, RDS and such). These CSV files allow for easy handling of this information making it possible to display it in a user-friendly list or map…obviously with a little coding effort.

My solution lets you specify a frequency (or “all”) and select a range – you are then offered a list of matching transmitters/stations in order of distance from your location. Uses include: Identify a potential frequency for a new service (like a Community Radio Station) or simply to find out what stations are nearby and what services you can get from a nearby DAB multiplex. An option allows you to filter for nearby Community stations. You can also find for a specific service within a set distance, eg: Find all “Heart” transmitters within 50 miles of Bristol and so on.

Examples of use :

Results offered included: Distance, Frequency, Station/Service, Location/Site, In-Use ERP and Site/Aerial Height. Additional features available to the client included an ERP filter plus a “clear frequency search” offering potential “gaps” on the AM/FM bands. This works via the location+range filter plus removing frequencies +/-200KHz (18KHz for AM) either side of the “offending” service – a not-very-scientific method but provides a general idea of how cluttered the band is.


RadioLookup v1.12 Setup  (updated 8th Jan)
The unregistered version is free and can be used as often as you like.  Over 80 preset locations are included, but up to 100 can be defined. In order to see the latest data, just run the latest installer “over the top” of your existing installation.

This program is normally updated a day or so after Ofcom publish their latest “TX Params” spreadsheet.

Additional Features enabled in purchased version:

  • Show Individual DAB Services [example]
  • Find Available AM/FM Frequencies [example]
  • List TXs at this Site [example].

To register your copy and unlock the extra features, a one-time payment of £10 is required. Click here to make a £10 payment via Nochex.