Antennas-Amplifiers 6505 70cm Low Loss Receive Band Pass Filters are engineered for optimal performance in weak‑signal, terrestrial, and EME applications. Designed for direct connection to a coaxial relay, the 6505 filter minimizes insertion loss in the receive path, ensuring that wideband preamplifiers experience virtually no degradation to their noise performance. By sharply rejecting strong out‑of‑band signals, the 6505 provides stable operation in environments with strong adjacent‑band or high‑power local signals. The filter is housed in a sturdy0.8 mm brass enclosure, providing excellent mechanical stability, long‑term durability, and consistent electrical characteristics over time.

ATF-6505 Additional Specifications

• Frequency Range: 430–450MHz

• Nominal Impedance: 50-Ohm

• Input Return Loss: Better than –35dB

Insertion Loss Characteristics

• 1.82MHz: 100dB

• 3.8MHz: 100dB

• 7MHz: 100dB

• 14MHz: 95dB

• 21MHz: 95dB

• 28MHz: 81dB

• 50MHz: 67dB

• 54MHz: 64dB

• 88MHz: 51dB

• 108MHz: 45dB

• 144MHz: 36dB

• 146MHz: 36dB

• 430MHz: 0.15dB, RL –35dB

• 440MHz: 0.15dB, RL –35dB

• 450MHz: 0.15dB, RL –35dB

• 880MHz: 20dB (GSM)

• 960MHz: 25dB (GSM)

• 1296MHz: 43dB