Description
Scientific Atlanta 8761 LNA Dual Power Supply 18VDC 2-Channel For Parts
Dual-channel 18VDC power supply designed to provide bias power for Low Noise Amplifiers (LNAs) in satellite earth station systems. Accepts 105–130 VAC or 210–260 VAC input (50/60 Hz) and distributes regulated power to two independent LNA channels via DB-15 connectors.
Specifications & What's Included
- Model: Scientific Atlanta 8761
- Output: 2 channels at 18 VDC each
- Input: 105–130 VAC / 210–260 VAC, 50/60 Hz, 100 VA max
- Connectors: DB-15 (power out), DB-25 (alarms), 3-pin inline (DC in)
- Status LEDs: Green (power), Red (alarm) per channel
- Fuses: 3/4A GBA (LNA channels); 1A SLO BLO (primary); 1A SLO BLO (secondary outputs)
- Form factor: Rackmount
Applications
The 8761 provides regulated DC bias power for LNAs used in C-band and Ku-band satellite earth station receivers. It interfaces directly with Scientific Atlanta satellite communication systems and is mounted in standard 19-inch racks alongside receive equipment. Typically used in broadcast uplinks, teleport facilities, and VSAT networks requiring dual-channel LNA powering with independent monitoring and alarm reporting.
This Scientific Atlanta 8761 LNA Dual Power Supply has been tested at our facility and Channel 1 is non-functional — the green LED does not illuminate and there is no voltage output on that channel. The fuses for Channel 1 were checked and are good, so the fault lies within the channel circuitry itself. Channel 2 is functioning and outputting approximately 18 VDC. This unit is being sold as-is for parts or repair and is not guaranteed functional as a complete unit. Please view our photo set and contact us if you have any questions.
Warranty Information
Additional Information
Brand: |
Scientific Atlanta |
Model: |
8761 |
MPN: |
8761 |
Type: |
LNA Dual Channel Power Supply |
SKU: |
31444 |
Condition: |
As-Is / For Parts or Not Working |
Seller Notes: |
Channel 1 failed — no output, LED off, fuses good. Channel 2 outputs ~18 VDC. Sold as-is. |
Number of Outputs: |
2 |
Output Voltage: |
18 VDC (per channel) |
Input Voltage: |
105–130 VAC / 210–260 VAC, 50/60 Hz, 100 VA Max |
Fuse Rating (LNA 1 & 2): |
3/4A GBA |
Fuse Rating (F1): |
1A SLO BLO (105–130V) / 1/2A SLO BLO (210–260V) |
Fuse Rating (F3/F4): |
1A SLO BLO |
Connector - LNA PWR OUT: |
J5 – DB-15 (15-pin D-sub) |
Connector - LNA Alarms: |
J6 – DB-25 (25-pin D-sub) |
Connector - DC IN: |
J3 / J4 – 3-pin inline connector |
Front Panel Indicators: |
Green LED per channel (PWR), Red LED per channel (Alarm) |
Form Factor: |
Rackmount |
Application: |
LNA (Low Noise Amplifier) bias power for satellite earth stations |
Country/Region of Manufacture: |
United States |
Compatible With: |
Scientific Atlanta satellite earth station LNA systems |
Condition Notes: |
Scientific Atlanta 8761 LNA Dual Power Supply — Channel 1 non-functional (no output, green LED off, fuses good). Channel 2 outputs ~18 VDC. Sold as-is for parts or repair only. Not guaranteed functional. |
