Ten-Tec RX-340 Technical Manual page 14

Detection modes include USB, LSB, ISB, CW, CW1, NBFM, AM, and Synchronous
AM, with selectable sidebands. SAM significantly reduces fading and adjacent-channel
interference on AM signals. Separate headphone and speaker gain controls adjust
listening level (speaker-level audio is routed to a built-in 4-inch speaker and a switchable
external-speaker jack). An AF-channel selector routes upper, lower, or both sideband
channels to the speaker line in ISB and SAM modes. In addition, balanced and
unbalanced line-level outputs are available on the rear panel for remote monitoring.
Signal strength is displayed in either S-units or dBm on a large-scale, 2-1/2-inch analog
meter. Meter sensitivity is automatically compensated when the preamp or attenuator is
activated or manual gain is adjusted.
Rear-panel BNC jacks provide inputs for the antenna and external reference oscillator,
plus access to mixer and IF monitoring points. A standard DB-25 jack accepts a Multi-
drop RS-232 line for remote receiver operation. The RX-340's built-in power supply is
designed for international use, accepting a wide range of voltages and line frequencies.
Conservative engineering, all-SMD circuitry, and rugged mechanical construction ensure
reliable long-term performance.
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