Elecraft

Elecraft, Inc. is an American manufacturer of amateur radio equipment and kits based in Watsonville, California.

[8] The company's "K-Line" includes the K3 transceiver, the KPA500 500W solid-state power amplifier, the KAT500 automatic antenna tuner, and the P3 panadapter.

[9] The P3SVGA add-on for the P3 displays panadapter data on a large screen, and the W2 HF/VHF/UHF wattmeter are sometimes considered part of the K-Line.

The amplifier's power supply is housed in a separate enclosure, resulting in a relatively compact RF deck/control unit.

[14] The K4 features redesigned controls for band and mode settings, an integrated multi-band panning module (Panadapter), and touchscreen functionality.