Item Details:
Telewave TWPC-4510 Bandpass Cavity Filters
Telewave TWPC-4510-1 and -2 are 10” diameter, ¼-wavelength high-Q bandpass cavity filters with outstanding selectivity. They pass a narrow band (400-512 MHz) while blocking others, cutting transmitter sideband noise and shielding receivers from desensitization.
Factory-tuned with positive locking for simple field retuning. Adjustable coupling enables insertion loss from 0.5 dB to 2+ dB to tailor selectivity. The -2 model excels in high-density sites with minimal loss; multiple units can expand passband. Mounting rails included for multi-cavity systems.
Temperature-stable (-30°C to +70°C) using machined compensator and Invar rod. Ground Loop design grounds coupling loops at DC for lightning protection and noise suppression. Rugged construction: ¼-inch aluminum top plates heliarc-welded to body, rated up to 350 W (per loss setting). Alodined finish and similar metals prevent corrosion. Silver-plated tuners and beryllium copper contacts deliver low-loss, durable performance.
Specifications:
| Tuning range: |
400-512 MHz |
| Nominal impedance: |
50 ohms |
| VSWR at resonance (max): |
1.5:1 |
| Input power (max) vs. insertion loss: |
0.5 dB - 350 watts
1 dB - 250 watts
2 dB - 150 watts |
| Temperature range: |
-22°F to +158°F
-30°C to +70°C |
| Cavity electrical length: |
¼ wavelength |
| Outer conductor, end plates: |
6061-T6 aluminum |
| Inner conductor, coupling loops: |
Silver plated copper |
| Tuning rod: |
Invar |
| Contactors, fingerstock: |
Beryllium copper |
| Cavity dimensions (Diam. x H): |
10 x 12 inch (25.4 x 31 cm) |
| Connectors: |
N or UHF female (opt.) |
| Finish: |
Gray acrylic enamel |
Telewave-TWPC-4510-1-2-bandpass-cavity.pdf (106.75 KB)
Telewave Inc. designs and manufactures high quality RF system products. It serves wireless system operators, public safety providers, local and state governments, and federal agencies in the United States and internationally. The company was founded in 1972 and is based in San Jose, California. Telewave strives to be the premier supplier of seamless interoperable communication systems that provide security and reliability in mission critical eco-systems for both commercial and military applications worldwide. Telewave products are used by more than 7,500 equipment and network manufacturers and government agencies throughout the world.
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