Description
Andrew TRR 8120RJ 301-0345-01 Fiber Optic Modem 115V 60Hz Copper Fiber RJ
The Andrew TRR 8120RJ is a fiber optic modem from Andrew Corporation's TRR series, designed to extend data communications over fiber optic links with a copper RJ interface on the local side. It supports both copper and fiber loopback modes for diagnostics and line testing, and provides front-panel LED status indicators for Power, Data, Station, and Loopback conditions. The unit is housed in a compact desktop enclosure and runs on standard 115V AC power.
Specifications & What's Included
- Brand: Andrew Corporation
- Model: 8120RJ
- Part Number: 301-0345-01
- Series: TRR
- Hardware Revision: C.1
- Voltage: 115V AC
- Frequency: 60Hz
- Power Consumption: 6W
- Current Draw: 0.05A
- Fuse: 0.5A @ 250V
- Interface: RJ copper port (RI/RO) and fiber optic RX/TX ports
- Loopback: Copper and Fiber loopback modes (front-panel activated)
- Front-panel indicators: Power, Data, Station LEDs; Loopback Copper/Fiber LEDs; CONFIG switch; D/E switch
- Form Factor: Desktop/tabletop, compact gray metal enclosure
- Certifications: UL Listed (UL1950, 3J99), CE, GS
- Country of Manufacture: USA (Made in USA label visible)
- Date of Manufacture: June 23, 1997
- What's Included: Modem unit only; no power cord or accessories included
Applications
The Andrew TRR series fiber optic modems were used in telecommunications and campus network environments to bridge copper-based data circuits over fiber optic runs, allowing data signals to travel longer distances than copper alone permits while maintaining electrical isolation between endpoints. The 8120RJ model's copper RJ interface makes it compatible with standard RJ-style data equipment on the local side, while the fiber ports connect to the optical span. Loopback testing capability — available separately on the copper and fiber segments — simplifies fault isolation on the link without requiring additional test equipment. Andrew Corporation was a well-known manufacturer of telecommunications infrastructure products; the TRR series dates from the mid-to-late 1990s era when fiber optic extension modems were commonly deployed in enterprise campuses, utility networks, and telecom central offices to extend T1 and low-speed data circuits over optical fiber.
This Andrew TRR Series 8120RJ fiber optic modem has been inspected and appears to be in good used condition. The gray metal enclosure shows light surface wear consistent with normal bench or rack use. The front-panel LEDs, RJ copper port, fiber RX/TX ports, loopback buttons, and CONFIG switch are all visually intact with no obvious damage. The unit was pulled from a working environment. 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.
Warranty Information
Additional Information
Brand: |
Andrew |
Model: |
8120RJ |
MPN: |
301-0345-01 |
Secondary Model: |
TRR 8120RJ |
Type: |
Fiber Optic Modem |
Series: |
TRR |
Hardware Revision: |
Rev C.1 |
SKU: |
10301 |
Seller Notes: |
Unit only; no accessories included. |
Country/Region of Manufacture: |
United States |
Power Requirements: |
115V AC, 60Hz, 6W, 0.05A |
Fuse Rating: |
0.5A @ 250V |
Form Factor: |
Desktop / Tabletop |
Interface Type: |
Copper (RJ) and Fiber Optic |
Connector Type: |
RJ (copper), Fiber optic ports (RX/TX) |
Loopback: |
Copper and Fiber loopback supported |
Indicators: |
Power, Data, Station, Loopback LEDs; CONFIG switch |
Date of Manufacture: |
06-23-97 |
Certifications: |
UL Listed (UL1950, 3J99), CE, GS |
Compatible With: |
Andrew TRR series fiber optic modem systems |
Condition Notes: |
Andrew TRR 8120RJ fiber optic modem in good used condition. Enclosure shows light surface wear. Front-panel ports and indicators appear intact. Pulled from a working environment. Unit only, no accessories. |
Condition: |
Used – Pulled from Working Environment |
