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TEN-TEC RX-350D IF-DSP Kurzwellen-Empfänger |
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100 kHz bis 30 MHz Flash Rom DSP-Kurzwellenempfänger mit Softwareupdate-Funktion |
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| IF-DSP
Kurzwellenempfänger mit Flash ROM Technologie. Damit kann der
Empfänger kostenlos per Freeware-Software auf neue Versionen
umprogrammiert bzw. ergänzt werden. Dank der neuen DSP-Technik stehen
Einstellungen von 8 kHz (breit ) bis runter auf 300 Hz ( sehr schmal )
zur Verfügung. Bei Nicht-DSP-Empfängern kostet eine solche
Filter-Konstellation schon ein kleines Vermögen. Der RX350 kennt aber
insgesamt 34 Einstellungen in der Bandbreite! Das frische Design ist
nicht nur eine Augenweide, sondern auch vorbildlich in der
Übersichtlichkeit. ( not truly british and not made in Japan..)
Synchron-AM mit schaltbaren Seitenbändern sorgt auch bei Fading für
eine gute Signalwiedergabe. Mit der Sweep Funktion können Sie auch
Frequenzen überwachen, ohne diese direkt eingestellt haben zu
müssen. Max. 8 SWEEP-Bereiche können eingestellt werden. Diese
werden im großen Display grafisch angezeigt. Die 128 Speicher nehmen
nicht nur die Frequenz, sondern auch alle anderen wichtigen Parameter
auf. Das Display ist alpha-numerisch mit max. 8 Zeichen.
Ferner kann
zusätzlich noch ein kleines Und wer jetzt glaubt, dieser Empfänger ist wieder einmal " unbezahlbar", der sollte sich ruhig die Zeit nehmen und vergleichen!
Technische Daten:
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The Ten-Tec RX-350D is a full featured, mid-price range HF DSP receiver designed for today's demanding shortwave listener. The RX-350D is identical to the earlier RX-350, but now features a 12 kHz I-F output jack on the rear panel. This output jack can be connected to your PC sound card for decoding of Digital Radio Mondiale(tm) signals. See below for more details.
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-350D,
simply visit our website, download the latest version of the receiver, connect
it via a serial port cable to your RX-350D and it's
as if your radio rolled off the assembly line minutes earlier.
The RX-350D 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-350D 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-350D 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-350D. Built-in AC switching power supply allows operation of RX-350D 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-350D 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 302R, is available for armchair operation of the RX-350D. Simply plug the 302R into the rear panel of the RX-350D via the provided 6 foot cable. The 302R 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 302R is in use. Sit back and relax!
RX-350D is computer controllable through the rear panel RS-232 connector. Several commercial software packages have written support for the receiver, or you can 'roll-your-own' version by downloading the programmer's reference manual
RX-350D 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.) |
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