Image via the KTWR Blog
Many thanks to SWLing Post contributor, Dan Van Hoy, who writes:
[Regarding the reception of DRM via smart phone,] I happened to find this KTWR Guam post about decoding DRM30 with a smart phone, app, and an RTL-SDR:
Convert Smart Phone to DRM 30 HF receiver!
We are pleased to report successful use of an SDR Dongle used to directly receive and Decode DRM 30 over HF today.
The SDR Dongle is an RTLSDR v3 type connected to an android smartphone using an OTG cable (phone or tablet must be OTG capable).
The Software used:
1. Android driver (free)
2. DRM+SDR Android App ($4.99)The Frequency of the HF broadcast is directly assigned within the DRM+ SDR app with two settings
1. Frequency in Hertz
2. RF Gain (0-512)Demonstration video showing Clean DRM decode of AAC Audio and Journaline data along with live metadata. (our signal was very strong, so only a short wire used for Antenna, DX’rs will need an appropriate Antenna)
Now anyone with a smartphone and a $20 SDR can receive DRM 30 HF broadcasts…