★★★★★ “Solid VNA Correlation, Good Build”
“Used this for a Ku-band VSAT terminal prototype. The VNA plots provided by Dolph matched our bench tests closely—we measured about 0.17dB IL at center frequency. The grey paint is a bit thick around the mounting holes, but the FBP120 flange mating surface was perfectly flat and bare as it should be. Rejection below 12.2GHz hit 72dB in our lab setup. Solid unit.”
★★★★★ “Killed our out-of-band interference”
“We were getting flooded by a nearby C-band/X-band link on our receiver end. Dropped this WR75 filter inline and the 70dB isolation effectively killed the noise floor. Shipping via DHL took about 8 days to Texas, which wasn’t bad for a specialized component. It’s handling our 300W CW rig without noticeable thermal drift so far.”
★★★★☆ “Great electrical specs, lightweight”
“Appreciate that they include actual S11/S21 test sweeps in the box rather than just a generic pass/fail slip. The weight is strictly under 300g as advertised, which helped with our payload budget. My only minor gripe is I wish they included the mating screws/gaskets by default (you have to request them), but the filter itself is electrically sound and well-machined.”
Q: Real-world power handling limits?
A: Rated for 500W CW sustained. Conservative thermal design ensures minimal frequency drift during high-duty cycle operations.
Q: Available tuning for specific bands?
A: Yes. As an OEM, we can precision-tune the passband (e.g., 14.0-14.5 GHz) to meet specific VSAT or radar system requirements.
Q: Threaded vs. Thru-hole flange options?
A: Standard FBP120/FBM120 provided. Custom UNC 6-32 or Metric M3 threads can be specified at the time of order.
Q: Corrosion resistance for maritime use?
A: Features dual-layer protection: internal chromate conversion and external anti-corrosion paint. Recommend conductive grease for seaside environments.
Q: Are individual test reports included?
A: Yes. Each Dolph filter ships with a dedicated S-parameter report verifying 70dB rejection and VSWR metrics.
Q: Standard lead time for US delivery?
A: Typically 1-2 weeks for final tuning and QA. Shipping takes 3-5 business days via FedEx/DHL.
Elevating Microwave Communication
The Dolph WR75 Waveguide Bandpass Filter sets a new benchmark in microwave filtering technology, offering exceptional signal purity, robust durability, and high power efficiency. Its low-loss design and superior rejection capabilities make it an indispensable component for mission-critical applications where signal integrity is paramount. Whether deployed in commercial, military, or scientific research settings, this filter ensures reliable operation under stringent conditions, making it the ideal choice for engineers who demand precision and reliability in their microwave systems.
