RX-350 HF DSP RECEIVER


Full Image, Top view, Bottom view, Rear panel.

RX-350 HF DSP RECEIVER

The new Ten-Tec RX-350 is a full featured, mid-price range HF DSP receiver designed for today's demanding shortwave listener.

The world of IF level digital signal processing is now available in a powerful desktop SWL receiver unlike anything that has come before it.

What benefit does IF-DSP provide the shortwave listener? The 'big picture' benefit is cleaner signal readability. Eliminate heterodynes and limit spurious broadband noise instantly by pushing buttons. Take advantage of the wide variety of DSP filter choices built-in to the receiver to suppress undesired adjacent interference. Use these same filters to tailor the response of the receiver to your needs - from a wide 8 kHz for pleasing SAM or AM audio to a tiny 300 Hz for digging weak CW and digital mode signals out of the noise. There are 34 of them built-in. That's right, 34, not 2 or 3 built-in, and not sold as expensive options!

IF-DSP also allows Flash ROM updating of your receiver with the latest features and functions. Free! If new functions and features are added to the RX-350, simply visit our website, download the latest version of the receiver, connect it via a serial port cable to your RX-350 and it's as if your radio rolled off the assembly line minutes earlier.

The RX-350 features a clean, modern look featuring a large multi-function LCD graphics panel for display of all receiver functions. Push-button operation of major receiver controls are provided from the receiver front panel. Simple, logical layout of front panel controls allow operation of the radio without having to constantly refer to the instruction manual. Never has such a powerful receiver been so easy to operate.

RX-350 supports operating modes tailored to the dedicated shortwave listener. Selectable sideband, synchronous AM detection allows higher quality reception of AM signals especially under conditions of severe fading. DSP automatic notch filter for suppressing unwanted carriers in voice modes. Push-button DSP noise reduction to suppress unwanted broadband noise. The built-in 34 bandwidth filters from 300 Hz to 8 kHz are instantly selectable by turning a knob. All filters are independent of mode - use any available filter in any receive mode. Mode selection via dedicated push buttons rather than 'mode-cycling' with a single control. 'FAST UP' and 'FAST DOWN' buttons for quick large-step frequency changing. FAST UP and FAST DOWN buttons are user-configurable for step sizes, 1 MHz, 500 kHz, 100 kHz up or down. Main tuning knob can be adjusted in 7 user-selectable step sizes from 1 Hz to 100 kHz steps. Passband tuning and manual notch control are available in all modes, including synchronous AM.

Momentary 'SWEEP' function shows band activity in 8 selectable coverage rates. Find the signals without even being on frequency! Simply tune to a desired frequency, select one of 8 SWEEP ranges, and press the SWEEP button. Signals will be shown on the bar graph on opposite sides of the starting frequency. A cursor will appear and allow you to tune RX-350 to any signal visible on the screen. Easy!

8 banks of 128 memories each that retain frequency, mode and bandwidth information. An alphanumeric tag function of up to 8 letters allows memories to be tagged with specific names like "WSEV 930" or "VOA", etc.

Scan functions allow scanning of band segments or memory banks. Memory bank scan feature includes a memory lockout function for skipping of constantly busy channels. Band scanning is user-programmable; set the start and stop frequencies, push a button and the radio starts to scan between the two frequencies.

Built in clock displayed on LCD screen displays hours, minutes, and seconds in user-selectable 12 or 24 hour format. Timer circuitry and a squelch-activated output allow for monitoring and/or taping of band activity even when the user is not present. Timer function allows the radio to be set in a 'wait' mode, to power on at a specific time and to send a control signal for actuation of accessory equipment. Two separate timer outputs are provided for connection of two separate devices to be actuated by the timer circuit. The squelch-activated output allows the radio to be left on and squelched on a given frequency. When a signal is present to open the squelch, an actuation signal is sent via a rear-panel jack.

Rear panel Hi-Z and Lo-Z antenna inputs allow connection of virtually any antenna to the RX-350. Built-in AC switching power supply allows operation of RX-350 from either 115 or 230 VAC. Separate DC power input jack can be used for 13.8 VDC operation. AC and DC supply can be connected at the same time for back-up. Plug the RX-350 into the wall and connect to battery supply. If the AC power goes off, the connected DC source automatically takes over power to the receiver. Mute function for muting of receiver if used with a companion transmitter.

An optional remote encoder knob/keypad, model 302, is available for armchair operation of the RX-350. Simply plug the 302 into the rear panel of the RX-350 via the provided 6 foot cable. The 302 provides a duplicate of the main tuning knob of the receiver, a direct frequency entry keypad, and three functions buttons that can be user-assigned to control various receiver functions like mode switching, main tuning knob step size, SWEEP actuation, etc. Main tuning knob on the receiver front panel and all other receiver functions are active even when the 302 is in use. Sit back and relax!

No other shortwave receiver packs this much value 'under the hood'. To top it off, it's MADE IN USA and competitively priced!

Put the RX-350 side-by-side with your present HF receiver and see for yourself why
Ten-Tec is the fastest growing name in high-quality shortwave receivers.

RX-350 HF DSP Receiver $1199.00

RX-350 SPECIFICATIONS

MODES Synchronous AM/DSB, SAM/LSB, SAM/USB, AM, LSB, USB, CW, DIG, FM
FREQUENCY RANGE 100 kHz - 30 MHz.
DISPLAY Multi-line text and graphic Liquid Crystal Display.
TUNING Continuous Manual VFO, Frequency Scanning, and Channel Memory.
MEMORIES 128 per Bank, 8 Banks internal to RX-350.
FREQUENCY ACCURACY +/- 90 Hz at 25*C at 30 MHz for 1 year.
ANTENNA CONNECTIONS Coaxial: 50 ohms, nominal unbalanced.
Terminal Posts: 450 ohms, nominal unbalanced.
SENSITIVITY 0.35 uV typical for 10 dB S+N/N @ 3 kHz bandwidth, SSB mode.
SELECTIVITY 34 filters built-in with 1.5:1 or better shape factors (-6 to -60 dB): 300 Hz, 330 Hz, 375 to 750 Hz in 75 Hz increments, 750 Hz to 3 kHz in 150 Hz increments, 3 kHz to 6 kHz in 300 Hz increments, and 8.0 kHz.
SPURIOUS FREE DYNAMIC RANGE 90 dB for 3 kHz bandwidth at 50 kHz tone spacing.
THIRD ORDER INTERCEPT +10 dBm typical.
NOISE FLOOR -126 dBm @ 3 kHz bandwidth.
S-METER S9 calibrated to 50 uV standard.
RF ATTENUATOR 20 dB, selectable by operator
PASSBAND TUNING +/- 2 kHz.
I-F FREQUENCIES 1st I-F 45 MHz, 2nd I-F 455 kHz, 3rd I-F 12 kHz.
I-F REJECTION> 60 dB typical.
IMAGE REJECTION > 60 dB typical.
AUDIO Speaker: 1 watt @ 4 ohms.
Line out: > 1 V p-p into 600 ohms.
SPECTRUM SWEEP DISPLAY 8 widths from 240 Hz to 2.4 MHz, with tuning cursor and selectable Autosweep function.
POWER REQUIRED 110/220 VAC +/- 10% 50 - 60 Hz, or 12-14 VDC @1.5 A
CONSTRUCTION 8 epoxy-glass PC boards, molded front panel, aluminum chassis, textured painted steel cover.
DIMENSIONS HWD = 5" x 12.125" x 13" (12.7 x 30.8 x 33 cm.)
WEIGHT 12 lb. (5.45 kg.)


RX-350 HF DSP Receiver $1199.00