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Fairchild

Fairchild SM2900 SM290 70-140 MHz Satellite Modem RS422 IF 005919-000

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SKU:
31350
MPN:
SM290
Condition:
Used
Availability:
Usually ships within 1-2 business days.
Weight:
22.00 LBS
Shipping:
Calculated at Checkout
  • Fairchild SM2900 SM290 satellite modem front panel showing LCD display, keypad, and fault/test/lock indicators
  • Fairchild SM2900 SM290 satellite modem rear panel showing RS422 interface connector, D-sub connectors, and IEC AC power inlet
  • Fairchild SM290 model label showing model SM290 70/140, P/N 005919-000, M&C Software Rev 1.00, S/O 92013
  • Fairchild SM2900 rear panel detail showing J9 AUX and J10 FAULT D-sub connectors and J12 IF OUT BNC connector
  • Fairchild SM2900 rear panel detail showing J1 IF IN and J2 STA CLK BNC connectors and RS422 INTFC D-sub connector
  • Fairchild SM2900 interior view showing multiple internal PCBs with card-edge modules and front LCD assembly
  • Fairchild SM2900 front panel LCD screen displaying SM2900 by Fairchild Data Corp, ADDRESS 022, with F1-F4 function buttons and MENU SELECTION controls
$65.00
Was: $125.00
Current Stock: 7

Sold Out

Description

Fairchild SM2900 SM290 70-140 MHz Satellite Modem RS422 IF 005919-000

Rackmount satellite modem designed for L-band intermediate frequency (IF) operations. Processes satellite signals in the 70–140 MHz band with RS422 serial control and status interface.

Specifications & What's Included

  • Frequency Range: 70 MHz to 140 MHz
  • Interface: RS422 serial (DB25 connectors)
  • Signal I/O: BNC connectors (IF IN, IF OUT, STA CLK)
  • Front Panel: LCD display, keypad, fault/test/lock indicators
  • M&C Software Revision: 1.00
  • Form Factor: Rackmount
  • Unit only; no accessories included

Applications

Satellite modems of this type were used in VSAT networks, maritime and aviation communications, and telecom ground stations for IF signal demodulation and monitoring. The SM2900 series operated in L-band satellite systems common through the 1990s and 2000s. These units typically integrated into larger telecom racks alongside multiplexers, amplifiers, and network interface equipment for remote site or hub station deployments.

Condition: Used
This Fairchild SM2900 SM290 70–140 MHz Satellite Modem has been inspected and appears to be in good condition. The front panel LCD, keypad, and indicator sections are intact, and the unit shows normal cosmetic wear consistent with prior rack-mount service use. The rear panel connectors — including the RS422 interface, D-sub AUX and FAULT ports, and BNC IF connectors — appear clean and undamaged. The interior card assembly is visible and intact. Please view our photo set and contact us if you have any questions. Please note: We have multiple units in stock — yours may not be the one shown in the photos, however, it will be similar in condition and function.
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Warranty Information

We stand behind every item we sell with a 30-day money-back guarantee. If your item arrives not as described, you may return it within 30 days for a full refund. Please inspect your purchase upon arrival and contact us with any questions.
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Additional Information

Brand:
Fairchild Data Corporation
Model:
SM2900
Secondary Model:
SM290
MPN:
005919-000
SKU:
31350
Type:
Satellite Modem
Condition:
Used – Inspected
Form Factor:
Rackmount
Frequency Range:
70 MHz to 140 MHz
Interface Type:
RS422
IF Band:
70/140 MHz
M&C Software Revision:
1.00
Connectors:
BNC (IF IN, STA CLK, IF OUT), DB25 (RS422, J9 AUX, J10 FAULT)
Front Panel:
LCD display, keypad, fault/test/lock indicators
Country/Region of Manufacture:
United States
Seller Notes:
Unit only, no accessories. Inspected and in good condition.
Condition Notes:
This Fairchild SM2900 SM290 satellite modem has been inspected and appears to be in good condition. Front panel, connectors, and internal card assembly look intact with normal wear. Please contact us with any questions.
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ComStream CM701 PSK Digital Satellite Modem 140 MHz Modulator Demodulator

Comstream

$110.00
Was: $225.00
ComStream CM701 PSK Digital Satellite Modem 140 MHz Modulator Demodulator RackmountPSK digital satellite modem for modulation and demodulation at 140 MHz intermediate frequency. 2U rackmount unit...
39394
SKU:
39394
Availability:
Usually ships within 1-2 business days.
Weight:
25.00 LBS
Brand:
ComStream
Model:
CM701
MPN:
CM701
Type:
PSK Digital Satellite Modem
SKU:
39394
Condition:
Used – Powers On, Limited Testing
Form Factor:
Rackmount 2U
Power Requirements:
100-240V AC, 60-50 Hz, 1.0A, 90W
Modulation Type:
PSK (Phase Shift Keying)
IF Frequency:
140 MHz
Modulator IF Frequency:
140 MHz
Demodulator IF Frequency:
140 MHz
Symbol Rate:
Variable
Features:
Doppler Buffer, Monitor & Control (M&C)
Front Panel:
LCD display, Config/Monitor/Faults menu, Rx Sync, Tx Enable indicators
Rear Connectors:
BNC: J3 TxIF, J4 Tx Loopback, J5 RxIF, J6 Rx Loopback, J7 AGC Monitor
Interface Ports:
DB9 serial ports (rear), IEC AC inlet, rear expansion slot
Country/Region of Manufacture:
United States
Seller Notes:
Unit only; no accessories included. Powers on and front panel illuminates.
Condition Notes:
ComStream CM701 PSK Digital Satellite Modem powers on and front panel lights up; further testing was not performed. Sold as-found. Light cosmetic wear from prior rack use. Please contact us with any questions.