Condition: Used Supplied with pitcured accessories and power adapters. Good working condition.

The Viavi Trilithic Seeker HL In-Home Leakage Evaluation System is a low-cost digital leakage solution designed for CATV installation and service technicians. It includes a dual-frequency tagged signal source with selectable output level, paired with a discriminating leakage receiver that is extremely sensitive to leakage in both the Aeronautical (138 MHz) and LTE (757.5 MHz) frequency bands.

The Seeker HL Source Transmitter connects at the subscriber's ground block or tap, injecting two high-level CW carriers — tagged with a 20 Hz modulation — into the home network to over-pressurize the cable system. This pressurisation technique reveals any RF shielding defects or damaged connectors that could allow LTE or other ambient signals to ingress into the cable system. The Seeker HL receiver detects only tagged signals, preventing false triggers from other RF sources.

Leakage levels displayed on the receiver are normalised to represent leak values at typical system levels, providing consistency for documentation in accordance with established industry practices. An audible tone proportional to signal strength helps technicians physically pinpoint the source of leakage.

RECEIVER SPECIFICATIONS
Monitored Frequencies (Low Band): 138 MHz
Monitored Frequencies (High Band): 757.5 MHz
Calibrated Level Range: 0.1 to 1000 µV/m @ 60 dBmV transmit level
Sensitivity (Low Band): 0.1 µV/m at 138 MHz
Sensitivity (High Band): 0.4 µV/m at 757.5 MHz
Display: Dual numerical readout of detected low and high-frequency leakage
Speaker: Tone present when leakage exceeds squelch setting; pitch proportional to leak strength
Antenna Connector: BNC type with dual-band rubber duck antenna
Data/Charge Port: Mini-USB (for charging and Seeker Setup Software configuration)
Construction: Plastic housing with rubber overmold
Dimensions (H x W x D): 7.50 x 3.25 x 1.50 in (191 x 83 x 38 mm)
Weight: 1.0 lbs (454 g)
Battery: Single 2600 mAh @ 3.7V Li-Ion, internal, factory replaceable
Operating Time: 8+ hours (dependent on use)
Charge Time: Approx. 10 hours
Power Adapter Input: 100–240 VAC, 50–60 Hz, 0.3A Max
Power Adapter Output: 5 VDC, 1.0A

TRANSMITTER SPECIFICATIONS
Output Frequencies: 138 MHz and 757.5 MHz (simultaneous)
Tag Modulation: 20 Hz
Output Level (High): +60 dBmV (for home certification)
Output Level (Low): +40 dBmV (for porous networks)
RF Output Connector: SMA type
Construction: Plastic housing
Battery: Li-Ion internal, rechargeable
Charge Indicator: LED (Green = Done, Red = Charging)

USE CASES
In-home shielding integrity certification
Locating intermittent ingress/egress faults in subscriber premises
Compliance testing for LTE and aeronautical band interference requirements
Cable installation quality assurance and troubleshooting

Trilithic Seeker HL product datasheet — features, specifications and system overview: Download PDF

Trilithic Seeker HL product datasheet (alternate hosted version): Download PDF

VIAVI Seeker HL Kit specification sheet — full technical specifications: Download PDF