Item Details:
Telewave THRP Series High Performance Repeater Panels
The Telewave High-Performance Repeater Panel is designed to enhance the sensitivity and selectivity of a repeater receiver, extending mobile and portable coverage while providing superior intermodulation protection for the transmitter.
This panel features a dual isolator with a 50-watt termination on the second stage output, complemented by a low-pass filter to safeguard against transmitter intermodulation (IM). Together, they deliver over 60 dB of IM protection across a ±5 MHz bandwidth and attenuate the transmitter's second harmonic by more than 50 dB.
At the heart of the system is a duplexer that incorporates four 4-inch cavities in a pass/reject configuration, achieving an impressive 110 dB isolation with only 1.8 dB insertion loss. For additional filtering, the receiver side connects to two 8-inch high-Q bandpass cavities, forming a narrow passband preselector.
The preselector output is fed into one of two available low-noise preamplifiers. The standard configuration includes a TLA series low-noise bipolar preamp, ideal for environments prone to lightning or high ambient signal levels. For sites with minimal RF noise, an optional TGA series preamp featuring a PHEMT amplifier is available, offering enhanced sensitivity.
The entire THRP system is mounted on a compact 14” x 19” panel, fully tuned and ready for installation. By integrating all components into a single unit, the panel reduces costs compared to purchasing each item separately while conserving valuable rack space.
Specifications:
Frequency range: |
THRP-1548: 138-174 MHz THRP-4548: 400-512 MHz THRP-7648: 763-869 MHz THRP-8648: 806-960 MHz |
Frequency separation (min): |
3 MHz |
Power input (continuous): |
125 watts |
VSWR (max): |
1.22:1 |
TX-RX isolation (typ.): |
110 dB |
Insertion loss TX to Antenna (typ.): |
1.8 dB |
TX 2nd harmonic attn. (typ.): |
50 dB |
Antenna to TX isolation (typ.): |
75 dB at 5 MHz |
RX-TX isolation (typ.): |
120 dB |
Temperature range: |
-30°C to +40°C |
Connector type: |
N Female |
Finish: |
Grained aluminum |
Dimensions (HWD): |
14 in x 19 in x 12 in 35.6 cm x 48.3 cm x 30.5 cm |
Net weight: |
25 lb / 11.4 kg (400-860 MHz) |