An international research team has developed a new intermediate band solar cell (IBSC) design that includes a quantum ratchet (QR) semiconductor nanostructure. This new element reportedly enables ...

Although the overall design of the Honor Band 9 isn’t significantly different from the older version, you can now choose from several different colorways (Purple, Blue, and Black), and there is ...

and design notes here. The interesting thing about this radio is that its VFO, power amplifier, and front-end cover all HF bands up to the VHF band 2m. This radio could quite easily be made into ...