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. |
California Prop 65 Warning: |
WARNING: This product can expose you to chemicals including lead and lead compounds, and DEHP (a phthalate), which are known to the State of California to cause cancer and birth defects or other reproductive harm. Go to P65Warnings.ca.gov |
