Sommerkamp Ft 250 -

The Sommerkamp FT-250 emerged during a pivotal era when single-sideband (SSB) voice transmission was rapidly superseding amplitude modulation (AM) as the dominant mode on the high-frequency bands. Built as a rugged, compact base station featuring a carrying handle, it offered hams a complete station in one package. However, it lacked an internal power supply. It required external units like the matching (which housed the station speaker) or the DC-200/250 mobile supply for 12V operation.

A robust 100 to 130 watts of RF power delivered to the antenna. Receiver Section sommerkamp ft 250

The receiver is largely solid-state and pre-mixed vacuum tube architecture, featuring high sensitivity (0.5 uV for a 10 dB signal-to-noise ratio). It boasts a ±5 kHz receiver offset ("Clarifier" or RIT) that allows a operator to fine-tune a frequency without moving the transmit frequency. The Transmitter Section The Sommerkamp FT-250 emerged during a pivotal era

Designed with a compact frame, carrying handle, and options for both AC (FP-250) and 12V DC (DC-250) power supplies for field use. Technical Highlights Integrated receiver offset tuning for fine-tuning signals. Calibration Includes a 100 kc calibrator with a locking knob for dial accuracy. It required external units like the matching (which

: Covers the standard pre-WARC amateur bands: 80, 40, 20, 15, and 10 meters. The 10-meter band is split into four 500 kHz segments. Operating Modes

Switch to the desired sideband (USB/LSB). Adjust MIC GAIN so that the ALC meter deflects slightly on voice peaks during transmission. Maintenance Tips