Description
ComStream CM701 PSK Digital Satellite Modem 140 MHz Modulator Demodulator Rackmount
PSK digital satellite modem for modulation and demodulation at 140 MHz intermediate frequency. 2U rackmount unit with LCD front panel display and configuration controls.
Specifications & What's Included
- Model: CM701
- Modulation Type: PSK (Phase Shift Keying)
- IF Frequency: 140 MHz (modulator and demodulator)
- Variable symbol rate with Doppler buffer capability
- Power: 100-240V AC, 50-60 Hz, 90W
- Form Factor: 2U rackmount
- Front Panel: LCD display, configuration/monitor/faults menu, Rx Sync and Tx Enable indicators
- Rear Connectors: BNC (Tx IF, Tx Loopback, Rx IF, Rx Loopback, AGC Monitor), DB9 serial ports, IEC AC inlet
- Unit only; no accessories included
Applications
The CM701 was used in satellite communication systems requiring PSK modulation at 140 MHz. This modem type integrates modulator and demodulator functions for full-duplex satellite links. Typical applications include fixed satellite service (FSS) networks, telecom uplink/downlink stations, and data relay systems. The unit supports variable symbol rates and includes Doppler compensation for satellite orbital dynamics.
Condition: Used
This ComStream CM701 PSK Digital Satellite Modem powers on and the front panel display and indicators light up, but we are unable to test it further beyond that at our facility. The chassis shows light surface scuffs and handling marks typical of rack-pulled equipment, but is structurally intact with no visible damage to the front panel, connectors, or rear RF ports. The BNC connectors and DB9 interface ports on the rear appear clean and undamaged. The unit is being sold as found — powers on, no further functional verification was performed. Please view our photo set and contact us if you have any questions.
This ComStream CM701 PSK Digital Satellite Modem powers on and the front panel display and indicators light up, but we are unable to test it further beyond that at our facility. The chassis shows light surface scuffs and handling marks typical of rack-pulled equipment, but is structurally intact with no visible damage to the front panel, connectors, or rear RF ports. The BNC connectors and DB9 interface ports on the rear appear clean and undamaged. The unit is being sold as found — powers on, no further functional verification was performed. Please view our photo set and contact us if you have any questions.
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: |
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. |