the manufacturer is hobbyist-friendly, so it might be actually priced somewhere in the range of reality...
-bernieS
http://radio.tentec.com/Commercial/RX400
RX-400 PRELIMINARY SPECIFICATIONS
FREQUENCY COVERAGE: 2 - 3000 MHz. Cellular blocked within USA - unblocked version available to authorized users only.
MODE: USB, LSB, ISB, CW, AM, NFM, WFM
TUNING RESOLUTION: 1 Hz steps. (10 kHz steps at WB-IF output)
OPERATING TEMPERATURE RANGE :
0 - 50 degrees C @ full specification. -10 to 60 degrees C with degraded performance.
FREQUENCY STABILITY: standard TCXO: below 30 MHz +/-20Hz,above30 MHz +/- 3 ppm Optional TCXO: above 30 MHz +/- 0.6 ppm
ACCURACY: All internal oscillators are locked to either internal or external frequency standard.
EXTERNAL FREQUENCY REFERENCE: 1, 2, 5 or 10 MHz. Receiver automatically switches to this reference upon application, at power up or after any serial link activity.
SPURIOUS RESPONSES: (design target) all spurious to be less than -105 dBm equivalent input max. with approx. 6 less than –80 dBm
IMAGE REJECTION: 80 dB typical 2 - 3000 MHz.
IF REJECTION: 80 dB typical 2-3000 MHz
BFO: Tunable in CW mode only, +/- 8 kHz. Tuning in 10 Hz steps. Fixed frequency in SSB, disabled in AM and FM.
MEMORIES: 1000
SCAN RATE: 100 channels/sec or faster
SYNTHESIZER LOCK TIME: approx. 1 ms
SQUELCH: c/n ratio 0-99 dB
SELECTIVITY: selection is mode independent. Approx. 50 filter bandwidths with 8-10 chosen appropriately for each of the 5 modes. Shape factor 1.5:1 or better. (6 to 60 dB). Examples, useful for: CW – 100, 150, 200, 250, 300, 400, 500, 600, 700, 800, 1000 Hz. SSB – 1.5, 1.6, 1.7, 1.8, 1.9, 2.0, 2.2, 2.4, 2.6, 3.0, 3.4 kHz . AM– 4.0, 5.0, 6.0, 7.0, 8.0, 9.6, 10.4, 12.0, 13.6, 15.2, 16 kHz.. WFM–100, 120, 140, 150, 160, 180, 200, 250, 300 kHz.
INBAND RIPPLE: 2-3 dB, referenced to IF output
SENSITIVITY:
Mode BW dBm
(for 12 dB NF)
SSB 10 db S/N 3 kHz -11
AM (50% mod) “ 6.0 kHz -10
FM-N @ 6 kHz dev 16 dB SINAD 15 kHz -107
FM-W @ 10-20 kHz dev “ 30–50 kHz -102
FM-W @ 75kHz dev “ 200 kHz -9
DYNAMIC RANGE: 3rd Order Intercept (dBm) typical 0, minimum -5. Noise figure (dB) typical 10, minimum 12.
2nd ORDER INTERCEPT: 50 dBm minimum
AGC: Fast, Medium, Slow, Programmable. Manual gain setting is provided in all four modes, adjustable over 120 dB range. DUMP feature provided in all modes.
Mode Attack(dB/ms) Hang(sec) Decay(dB/sec)
Fast 0.8 0 1200
Medium 0.8 0 100
Slow 0.8 0 25
Prog. 0.01-1.0 0.01-99.9 0.01-99.9
WIDEBAND IF OUTPUT, ANALOG: 21.4 MHz center frequency, fixed gain, 6 MHz bandwidth capable, 10 kHz tuning steps. 2 MHz bandwidth if receiver tuned below 20 MHz.
S-METER: reports signal level in dBm to host upon request
OPTIONS: (only one may be installed) NARROWBAND IF OUTPUT: 21.4 MHz center frequency, bandwidth determined by filter selection, delayed AGC. DIGITAL DATA OUTPUT: 16 bit, I&Q, serial. Baseband representation of NB-IF output.
CONTROL INTERFACE: built-in MULTI-DROP RS-232 (DB9 connector) and TCP/IP Optional: POTS – allows customer to remote unit anywhere with access to nothing but a phone line. No PC required.
FIRMWARE: can be updated remotely in Flash ROM
ANTENNA INPUT: 50 ohm, unbalanced, SMA connector. 2.5:1 VSWR max @ receiver's tuned frequency.
RF INPUT PROTECTION: accepts +20 dBm w/o damage
AUDIO LINE OUTPUT: 0 dBm (+/- 3 dBm) 600 ohm outputs. Terminals may be grounded or shorted together without damage. One AC coupled, one DC coupled
HEADPHONE OUTPUT: both 1/4" and 1/8” stereo phone jacks. 10 mw maximum into 600 ohms. Front panel volume control.
POWER REQUIREMENTS: 90-264 VAC, 48-440 Hz @ approx. 40 watts. Removable six foot line cord included. Optional: substitute 11-28 VDC supply at additional cost.
DIMENSIONS: 7.5”W x 15.5”D x 3.5”H. Rack mountable with optional bracket kits for either half rack or full rack widths.
MTTR: less than 30 minutes for replacement of any of 8 major subassemblies.
ADDITIONAL FEATURES: MUTE,for use in transmit/receive applications, mutes audio and IF outputs.
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