Frequencies

Contains ads
676 reviews
Content rating
Everyone
100K+
Downloads
Content rating
Everyone
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About this app

Find out what the frequency of a specific LPD / LPD 8 / PMR / CB (Citizen Band, 'normal' or UK) / UHF / PRS / FRS/GMRS / KDR / Marine VHF / AAR (American Assocation of Railroads) channel is and the CTCSS tone code of a subchannel.

Do you have a 2 meter / 70 cm band radio and want to communicate with someone with a Marine VHF / PMR / LPD / UHF / PRS / KDR / FRS/GMRS / AAR radio? Is that one also using 'subchannels'? This app is what you need!

Select which type you need and select the channel and subchannel. The app calculates / converts the channel. The frequency (in MHz) and CTCSS frequency (in Hz) / tone code are then shown.

Or select the frequency (of a channel or subchannel) and the nearest channel will be shown, if it is nearby the given frequency. Select the tab 'frequency' at the bottom of the app to make use of this functionality.

Possible types:
- PMR
- KDR
- LPD
- LPD8
- CB (Citizen Band)
- CB UK (Citizen Band UK)
- UHF (often used in Australia)
- PRS (often used in New Zeeland)
- FRS / GMRS
- FRS
- Marine VHF
- AAR (American Assocation of Railroads)

This is a version with ads. There is also a paid version of this app without ads. Ads and paid version are just to support the app development and subscription to the stores. Please tell me if you would like to have more features or supported radio types.

App icon by icons8.com / iconsdb.com
Idea by http://portoshop.nl
Find out what the frequency of a specific CB/LPD/PMR/UHF/Marine VHF channel is.
Updated on
Apr 11, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
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  • No data collected
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Ratings and reviews

653 reviews
Dave
May 22, 2022
Simple, easy to use interface to get you the info you need. As a noob to GMRS and HAM, this is a great resource to look up info. Also allows me to look at the waterfall display of my SDR & see what channel the activity is on. It doesn't turn your phone into a radio, it doesn't cure male pattern balding & it doesn't tell you lottery ticket winners, but what it does do [provide you channel, frequency, and 'privacy' tones] it does extremely well.
15 people found this review helpful
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redmi 9s
April 3, 2021
Nice app, but presumably based in the US as it's only listing 8 rather than 16 PMR frequencies, which was increased years ago.
43 people found this review helpful
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A Google user
July 6, 2019
Not sure why the reviews are so negative. This is the only app Ive found that provides frs and gmrs frequencies.
50 people found this review helpful
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iolar
October 2, 2019
Thank you!

What’s new

(Finally) updated for the new Android versions.
Content rating
Everyone
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App support

About the developer
Maaike Zijderveld
google.play.mail@iolar.nl
Kruisstraat 7 a 6986 CL Angerlo Netherlands