Using portable battery power is always a challange when operatin amateur radio in sota oprations. This article is about implementing lithium iron phosphate cells (LiFePO4) in ham radio portable operations.
Such kind of omnidirectional antenna gives the possibility to be QRV with horizontal polarisation, as commonly used for the CW and SSB section of the 2m band. This actual design shows a 1.3:1 bandwidth of about 150kHz, centered to 144.200MHz.
The 160M No Excuses Homebrew Vertical, EH antenna for 40 Meter, Magnetic loop by F5SWN, Maria Maluca Antenna by PY2BBP, 2m W6PO Power Amplifier Project, QSLInfo.de QSL manager database, Yaesu FT-1000-D RS 232 CAT interface
Fan Dipole Antenna for 40 20 and 6 meters, Antenna Maria Maluca, GridMapper WG7J, MARS Mod for the Yaesu FT-450D, HamThreads, Best Practices for DXpedition Operating DX University, DX Pedition Audio Recordings