Photo by Emtron Description: The Emtron DX-3SP Linear Amplifier is a 4000 Watts average output power, for the 160m through 10m amateur bands (9 bands), housed in a desk-top cabinet with self-contained power supply and cooling system. It utilises a two high performance tetrodes, type FU-728F, a ceramic metal tube with a plate dissipation of…
APRS (Automatic Packet Reporting System) is an amateur-radio based system for realtime communication using digital packets sent over radio links. I present here, an implementation of an APRS iGate using the Raspberry-Pi. An APRS iGate is an Internet gateway that gates packets from the radio/RF side to the APRS-IS on the Internet (and vice-versa). The…
This repair valid for APPLE MBP “MagSafe Power Adapter with “L-Type” Power Plug This problem happens quite often, for APPLE “Mac Book Pro” users. In some cases the power supply plug is broken. I fixed this problem myself (See pictures below). But, first some introduction how’s plug looking inside: Now time to repair. Note: Be…