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TEN-TEC RX-340
Specifications

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Communications Receivers

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RX-340 Specifications.

Frequency Range ..... 5 - 30000 kHz
Modes ............... AM/USB/LSB/ISB/CW/FM/AM-Sync.
Power ............... 90 - 264 VAC  48-440 Hz 30 Watts
Antenna Input ....... 50 ohm unbalanced BNC
Selectivity (-6dB) .. 57 bandwidths selectable from 0.1 kHz to 16 kHz.  
                      Shape factor 1.5:1 or better. 6 to 60 dB.
                      100	350	1000	1800	3200	5600	 9600  16000  	
                      120	400	1100	1900	3400	6000	10400
                      150	450	1200	2000	3600	6400	11200
                      170	500	1300	2200	3800	6800	12000
                      200	600	1400	2400	4000	7200	12800
                      220	700	1500	2600	4400	7600	13600
                      250	800	1600	2800	4800	8000	14400
                      300	900	1700	3000	5200	8800	15200
                      (ISB fixed at 3.2 kHz, S-AM fixed at 6 kHz.)	
Sensitivity ......... <.14 µV CW .5-30 MHz  (10 dB S+N/N) Typical. Preamp on.
                      <.25 µV LSB/USB/ISB
                      <.56 µV AM
                      <.90 µV FM
Stability ........... 1 PPM (0-50° C.)
AGC ................. Fast 0.8 dB/ms attack, 0 hang, 1200 dB/sec Decay
                      Med  0.8 dB/ms attack, 0 hang, 100 dB/sec Decay
                      Slow 0.8 dB/ms attack, 0 hang, 25 dB/sec Decay
                      Prog. 0.01-1 dB/ms attack, 0.01-99.9 hang, 0.01-99.9 dB/sec Decay
Ext. Ref. ........... 1, 2, 5 or 10 MHz.
IF Output Post DSP... 455 kHz Center Frequency, bandwidth determined by filter selected
IF Rejection ........ 90 dB typical, 80 dB minimum
Image Rejection ..... 90 dB typical, 80 dB minimum
Ultimate Rejection .. 70 dB minimum regardless of filter selected
Second Ord. Intercept 75 dBm typical
Third Order Intercept 30 dBm typical
Synthesizer Lock .... 10 msec typical
BFO ................. Tunable in CW only 8 kHz in 10 Hz steps.  Fixed in SSB/ISB.
Wideband Output ..... First Mixer:  45.555 MHz Center Frequency
Audio Line Output.... Two 600 ohm (one for each sideband in ISB)
Headphone Output .... ¼ inch. Stereo in ISB, switchable to LSB, USB or both.  Mono in other modes.
Passband Tuning ..... 2 kHz in USB, LSB and CW
Spurious Responses... Less than -119 dBm equivalent input - preamp on.
LO Phase Noise ...... -120 dBc/Hz @20 kHz offset typical, -110 dBc/Hz maximum.
Memories ............ 100 channels (frequency, mode, bandwidth, BFO settings).
RS-232 Port ......... 75 to 38,400 baud. 
Circuit Type ........ D.S.P.
Environment ......... 0-50° C (32-122° F)
Dimensions .......... 19" x 5.25" x 12.5"  482x133x317 mm
Weight .............. 12.5 Lbs. net (5.7 kg)


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