Product Overview
The YF-PT-139-XX-NF series is a heavy-duty VHF/UHF Power Tapper designed for mission-critical communication systems operating between 137MHz and 960MHz. This series is optimized for Public Safety DAS, private radio networks, and trunking systems. With a high power handling capacity of 300W and an IP65 waterproof aluminum housing, it ensures minimal insertion loss and exceptional reliability in both indoor and harsh outdoor environments.
Technical Specifications
| Model Number | YF-PT-139-3-NF | YF-PT-139-6-NF | YF-PT-139-10-NF | YF-PT-139-15-NF | YF-PT-139-20-NF | YF-PT-139-30-NF |
| Ratio, nom. | 2:1 / 3.0dB | 4:1 / 6.0dB | 10:1 / 10dB | 30:1 / 15dB | 100:1 / 20dB | 1000:1 / 30dB |
| Output Split (dB) | -1.8 / -4.8 | -1.6 / -7.0 | -0.9 / -10.4 | -0.5 / -15.3 | -0.4 / -20.1 | -0.4 / -30.1 |
|
Flatness (dB) 137-200MHz |
-6.3 ±0.7 | -8.1 ±0.7 | -11.0 ±0.8 | -16.0 ±0.8 | 20.3 ±1.0 | 6.3 ±0.7 |
|
Flatness (dB) 200-250MHz |
-5.8 ±0.6 | -7.6 ±0.6 | -10.7 ±0.7 | -15.6 ±0.8 | 20.1 ±1.0 | 5.8 ±0.6 |
|
Flatness (dB) 250-380MHz |
-5.4 ±0.6 | -7.3 ±0.6 | -10.3 ±0.7 | -15.5 ±0.8 | 20.0 ±1.0 | 5.4 ±0.6 |
|
Flatness (dB) 380-520MHz |
-5.1 ±0.6 | -7.0 ±0.6 | -10.1 ±0.7 | -15.2 ±0.8 | 20.1 ±1.0 | 5.1 ±0.6 |
|
Flatness (dB) 698-960MHz |
-4.8 ±0.5 | -6.5 ±0.5 | -9.9 ±0.5 | -15.4 ±0.5 | 21.1 ±0.8 | 4.8 ±0.5 |
| Input VSWR Max(147-380MHz /380-960MHz) | 1.4 / 1.3 | 1.3 / 1.25 | 1.20 / 1.20 | 1.20 / 1.20 | 1.20 / 1.20 | 1.20 / 1.20 |
Mechanical & Environmental Specifications
| Frequency Range | 137-960MHz |
| Impedance / Power | 50Ω / 300W Average |
| Connector Type | N-Female |
| Housing Material / Color | Aluminum / Black |
| Environmental Rating | IP65 (Waterproof), Outdoor Application |
| Temperature Range | -35° C to +75° C |
NOTE: This VHF/UHF series provides stable coupling values across a wide spectrum, ensuring balanced signal distribution for TETRA, P25, and LTE-700/850/900 networks. All specifications are subject to customization based on specific project requirements.
Frequently Asked Questions
- Q1: What are the typical applications for this 137-960MHz power tapper?
- A: This frequency range is critical for Public Safety networks (VHF/UHF), including TETRA, P25, and DMR systems. It is also widely used in LMR (Land Mobile Radio) and the lower cellular bands like LTE-700 and GSM-900, making it ideal for government and emergency service infrastructure.
- Q2: How does the "Branch Flatness" impact my network performance?
- A: Because VHF and UHF waves behave differently, signal loss can vary. Our tapper is designed with tight Flatness tolerances (as low as ±0.5dB), ensuring that whether you are operating at 150MHz or 900MHz, the power "tapped" off remains consistent and predictable.
- Q3: Is the 300W power rating sufficient for high-power VHF transmitters?
- A: Yes. Many VHF/UHF base stations operate at higher power levels than standard cellular sites. The 300W average power handling capacity of the YF-PT-139 series ensures the component can handle high-duty cycle transmissions without overheating or degrading.
- Q4: Why is an IP65 rating important for this specific product?
- A: Public safety antennas are often located in remote or exposed outdoor areas (towers, rooftops). The IP65 waterproof rating and aluminum housing protect the internal circuitry from rain, dust, and humidity, ensuring 24/7 reliability for mission-critical communications.
- Q5: Can I use this tapper with N-type male cables?
- A: Yes. The device comes standard with N-Female connectors on all ports, which are the industry standard for VHF/UHF equipment. It will interface perfectly with any high-quality N-Male jumper cable.
