Black Cat HF Weather Fax

A full featured program that decodes and displays weather fax transmissions transmitted over shortwave radio, as well as Satellite APT, available for macOS and Windows. Invaluable for mariners and others who need up to date weather information even when not connected to the internet.

Tune your shortwave radio to a weather fax transmission and feed the audio into your computer's sound card input, and start receiving and displaying weather fax images in minutes.

Black Cat HF Weather Fax integrates with the SDRPlay SDRUno software package via the free Black Cat Systems plugin. Instructions for configuring both are available on this page.

Control of SdrDx, SdrSharp and Elad SW2 is also built in.

A schedule of worldwide weather fax transmissions is available here: rfax.pdf

Buy Your Copy of Black Cat HF Weather Fax Today

Start decoding HF Weather Fax transmissions in just minutes!

$19.99 Registration code sent by email, software download

Black Cat HF Weather Fax is only $19.99, which entitles you to all updates and new versions released over the next full year, free of charge, which of course you can continue to use forever.

Free To Try!

Not sure you're ready to buy Black Cat HF Weather Fax? You can download a fully featured copy to try out, before you buy it.

Download a copy of Black Cat HF Weather Fax version 2.1.0 for Windows 8, 10, 11: https://www.blackcatsystems.com/download/HFFAX_app_windows.zip (January 25, 2021)

Download a copy of Black Cat HF Weather Fax version 2.1.0 for macOS 10.10 through 11 Big Sur, 64 Bit Application: https://www.blackcatsystems.com/download/HFFAX_app.zip (January 25, 2021)

A virtual audio cable/driver is required for use with SDR programs. We have a list of third party programs here.

Uno UDP:

UnoUDP lets you control SDRuno and SDR# with Black Cat HF Weather Fax. Download here: https://radiohobbyist.org/download/UnoUDP.zip

Beta Versions:

Remember these are betas, and updates can break things. When downloading a new copy, please keep your existing copy, in case you need to go back to it.

Black Cat HF Weather Fax version 2.2.0b3 for Windows 8,10, 11: https://www.blackcatsystems.com/download/HFFAX_app_windows_beta.zip (April 7, 2022)

Black Cat HF Weather Fax version 2.2.0b3 for macOS 10.9.5 through 11, 64 Bit Application: https://www.blackcatsystems.com/download/HFFAX_app_beta.zip (April 7, 2022)

If macOS complains it cannot open the app, right click the app icon, and select Open.

Email your comments and questions to info@blackcatsystems.com

Last modified April 7, 2022