Studying the MF/HF radio stations. Their role in GMDSS, main requirements to installation and survey. GMDSS Radio Survey Blog
Yaesu FT-100D HF/VHF/UHF Mobile Transceiver (Transceiver only) | Tecomart
Hf Vhf Uhf In Ham & Amateur Radio Transceivers for sale | eBay
Amazon.com: Nooelec NESDR Smart HF Bundle: 100kHz-1.7GHz Software Defined Radio Set for HF/UHF/VHF Including RTL-SDR, Assembled Ham It Up Upconverter, Balun, Adapters : Electronics
Satcom Pty Ltd - Leopard1 HF/VHF/UHF* The Leopard1 is a compact, rugged and lightweight wideband military radio which offers uncompromised communication for tactical missions in the HF, VHF and UHF bands. Built-in