RX-400 HF/VHF/UHF DSP Receiver
Links | SpecificationsTEN-TEC has expanded its line of DSP based receivers. 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).
Inquires: tomsalvetti@tentec.com or call Tom Salvetti direct (304) 884-7601.
This device has not been tested for FCC Part 15 certification. This device may not be sold or leased, or offered for sale or lease in the U.S.A. until Part 15 certification has been obtained.
FREQUENCY COVERAGE: 2MHz - 3.0 GHz
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 +/- 20 Hz, above 30 MHz +/- 0.5ppm
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 control interface activity.
SPURIOUS RESPONSES: 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. 1ms
SQUELCH: adjustable 0-127 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, 15.2,16kHz 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 | -117 |
| AM (50% mod) | "" | 6.0 kHz | -108 |
| 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 | -96 |
DYNAMIC RANGE: in-band
| Freq. | NF (dB) | IP3 (dBm) | ||
| Typ | Max | Typ | Min | |
| 2 MHz - 88 MHz | 12 | 15 | -2 | -5 |
| 89 MHz - 1650 MHz | 13 | 16 | -3 | -6 |
| 1651 MHz - 3 GHz | 14 | 17 | -3 | -6 |
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, 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)
- DIGITAL DATA OUTPUT: 23 bit, I&Q, serial. Baseband representation of NB-IF output
- NARROWBAND IF OUTPUT: 21.4 MHz center frequency, bandwidth determined by filter selection, delayed AGC
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 @ 36 watts typical, 0.6 PF @ 120VAC, 60 Hz. Removable six foot line cord included.
- OPTION: substitute 11-28 VDC supply at additional cost
DIMENSIONS: 7.5"W x 17"D x 3.5"H. Without knobs and fan. Rack mountable with optional bracket kits for either half rack or full rack widths.
WEIGHT: 10.25 lbs. (4.65 kg)
MTTR: less than 30 minutes for replacement of any of 9 major subassemblies.
ADDITIONAL FEATURES:
BITE: Built-in self test capability will identify virtually all faults to the board level.
Mute: for use in transmit/receive applications, mutes audio and IF outputs.
