VR-450D | High-Isolation 50W UHF Cavity Duplexer
The ultimate backbone for GMRS and Amateur Radio repeaters. Decoded for pros: 4 (400-470MHz) | 50 (50W Continuous Power) | D (Duplexer).
Tested Beyond Standards.
Up to 113dB Lab Isolation.
While the baseline specifications guarantee a solid ≥80dB isolation, our factory vector network analyzer sweeps reveal the true heavy-duty performance of the VR-450D—achieving an outstanding actual attenuation between 94.5dB and 113.2dB. This ensures absolute zero desense for your high-power base station transmitter.
Perfect Companion For:
DIY GMRS Repeater Builds, Commercial Land Mobile Radio Nodes, and 70cm Amateur Radio Base Stations requiring a 10MHz frequency spacing.
Why the VR-450D Excels
Real-World Insertion Loss ≤ 0.59dB
Far outperforming the standard ≤0.80dB ratings. Our internal silver-plated cavity resonators keep signal passage loss ultra-low (typical 0.56dB), meaning your TX power reaches the antenna line with maximum efficiency.
Flawless VSWR Control (≤ 1.06)
Excellent impedance matching at a flat 50 Ohm. Real-world typical VSWR stays down between 1.03 and 1.06, minimizing dangerous RF power reflections and protecting your transmitter's power amplifier from heat stress.
Heavy-Duty Chassis Stability
Weighing a solid 1.50 kg with a rugged compact layout (225 x 154 x 40 mm), it features premium temperature-compensated resonance structures to resist frequency drifting from -25 degrees Celsius up to +55 degrees Celsius.
Customer Reviews