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The RX-400 is a HF/VHF/UHF DSP Receiver. Tuning from 2 MHz to 3 GHz, the 1 ms synthesizer lock time provides realistic scan rates of 100 channels/sec or faster. One outstanding benefit of the DSP architecture is more than 50 built-in filter bandwidths from 100 Hz to 300 kHz, most useable in any detection mode. Strong signal handling is assured with a typical in-band 3rd order intercept of -3 dBm. In addition to conventional AGC presets, RX-400 includes a programmable mode. This allows the customer to build their own unique AGC characteristics specifically for a mission. A 21.4 MHz wideband IF output is provided with 6 MHz of bandwidth. The RX-400 includes both an RS-232 interface and TCP/IP. Receiver is modestly sized for ½ rack installation. Options will include: a Digital Data output, Narrowband IF output and a POTS interface to allow customer to remote unit anywhere with access to nothing but a phone line (no PC required).

General characteristics

HAM bands
Frequency stability
Standard TCXO: below 30 MHz +/- 20 Hz, above 30 MHz +/- 0.5ppm
Tuning steps
0.001 kHz
1000 channels in bank(s) @ 100 channels/second


2MHz - 3.0 GHz
All mode   AM   N-FM   W-FM   CW   USB   LSB   ISB  
SSB, 10 db S/N: 3 kHz@-117dBm
AM (50% mod), 10 db S/N: 6.0 kHz@-108dBm
FM-N @ 6 kHz dev, 16 dB SINAD: 15 kHz@-107dBm
FM-W @ 10-20 kHz dev, 16 dB SINAD: 30-50 kHz@-102dBm
FM-W @ 75kHz dev, 16 dB SINAD: 200 kHz@-96dBm
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, 15.2,16kHz WFM-100,120,140,150,160,180, 200, 250, 300 kHz
Receiver system
Image rejection
80 dB typical 2-3000 MHz
Audio output
Line + Headphones




Power requirements
90-264 VAC, 48-440 Hz; optional 11-28V DC power supply
Current drain RX


Dimensions (w×h×d)
190 × 89 × 432 mm (7.48 × 3.50 × 17.01 in) Without knobs and fan
4.65 kg (10.3 lbs)
Form factor
Base Station
Between 2009 and in USA

Other features

Amateur / Ham radio operators
Features + options
RigReference ID

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