Description
The Microlab BK-741E is a professional AWS / PCS low PIM diplexer filter designed to combine or separate wireless signals in the AWS and PCS frequency bands. This single-unit configuration features 4.3-10 Female connectors and supports the 1695–1780 MHz, 1850–2000 MHz, and 2110–2180 MHz frequency ranges for cellular, DAS, and other wireless infrastructure applications.
The BK-741E is designed for high-performance RF systems requiring minimal insertion loss and strong isolation between frequency bands. It supports up to 250 W continuous-wave average power per input, provides greater than 50 dB input isolation, and delivers low PIM performance of less than -161 dBc when tested with two +43 dBm tones. Its rugged IP67 enclosure supports indoor and outdoor installations, and a mounting bracket is included.
Key Specifications
- Manufacturer: Microlab
- Part Number: BK-741E
- Product Type: AWS / PCS Diplexer Filter
- Assembly Type: Single
- Connector Type: 4.3-10 Female
- Impedance: 50 Ohm nominal
- AWS Frequency Bands: 1695–1780 MHz and 2110–2180 MHz
- PCS Frequency Band: 1850–2000 MHz
- Port 1 to Port 3: 1695–1780 MHz and 2110–2180 MHz
- Port 2 to Port 3: 1850–2000 MHz
- Maximum Power Per Input: 250 W CW average
- PIM / Intermodulation Distortion: Less than -161 dBc
- PIM Test Method: Two +43 dBm tones
- Input Isolation: Greater than 50 dB in band
- Passband Loss: Less than 0.3 dB
- Passband Ripple: Less than 0.4 dB in any 4 MHz band
- Return Loss: Greater than 19 dB, all ports
- Phase Linearity: ±3° maximum in any 4 MHz band
- Group Delay: 10 ns maximum in any 4 MHz band
- DC Path: All paths
- Ground Lug: M8 Screw
- Lightning Protection: 8/20 µs, 20 kA
- ANT Port Lightning Protection: 10/350 µs, 3 kA
- Operating Temperature: -40°C to +85°C
- Ingress Protection: IP67
- Connector Finish: Triplate
- Housing Finish: Grey Epoxy Coating
- Nominal Weight: 4.1 lb / 1.9 kg
- Mounting: Mounting Bracket Included
- RoHS: RoHS Compliant
- Condition: Used
- Quantity: 1 Diplexer
Typical Applications
- Distributed Antenna Systems (DAS)
- In-building wireless systems
- AWS-1 and AWS-3 wireless networks
- PCS and GSM RF systems
- Cellular RF signal combining and separation
- Base station and repeater installations
- Multi-band wireless infrastructure
- Indoor and outdoor telecommunications systems
| Price Comparison | |||
| DAS DEALS | Tessco | Talley | Graybar |
|---|---|---|---|
| $549.99 | $701.89 | $694.00 | $742.77 |
| You Save | 22% | 21% | 26% |
Please Note: This Microlab BK-741E is offered in used condition. Price comparison is shown per unit. The BK-741E is the single 4.3-10 Female connector version of the BK-741 series. Please verify frequency bands, connector type, power requirements, and system compatibility before ordering.
