Ham Help Desk

QRPKits.com has introduced the next model of their famous DC-xx series, the DX-xxB where xx = 20, 30 or 40 meters.
These are single frequency QRP units that are easy to build and fun.
The QRPeanut Can transceiver featured on HamHelpDesk uses a DC-40A unit.
This easy to build QRP transceiver is a single channel direct conversion crystal [...]

Resolving the mystique surrounding the 5/4 wave antenna comparing center and end fed approaches.

Analysis to suggest you really can use a 2 meter J-Pole in the 70cm band.

Longer is not always better in the world of antennas. Such is the case of the 5/4 wave vertical antenna… a Super J-Pole Wannabe Antenna

Described is a unique Balun technique used for the navigation receiver horizontal dipole in Cessna aircraft.