Astroimager Adam Block shows readers how to set up field-of-view indicators based on their telescope and CCD camera. Field of view (FoV) indicators are fundamental tools for imagers. They can show you ...

A rf field indicator is required to verify power stages and transmitters antennas. With this radio field indicator you can measure radiated energy from antenna. This circuit is very sensitive, a weak ...

A radio field signal strength indicator is very usefull for determine radiation patterns of transmitters antennas. An ancillary antenna must be put close to main transmitter antenna. The received ...