Antennas-Amplifiers 6340 2m/70cm Dual Band 200W Bandpass Filters are precision‑engineered for operators who demand clarity, power, and reliability. Designed with exceptionally low insertion loss and a 200‑watt power rating, these filters excel at both transmit and receive, preventing receiver overload from HF, 6m, and 4m stations while powerfully suppressing harmonics above 450MHz, including 720MHz, 864MHz, GSM 930MHz, and even 23cm at 1296MHz. With an input return loss better than –26dB, a broad operating range of 144–450MHz, and features N‑type female connectors. Their precise bandpass design allows only the 2m and 70 cm bands to pass cleanly, ensuring that unwanted signals and interference are effectively eliminated for consistently clear communications. Compact, easy to integrate, and especially well‑suited for dual‑band antennas, these filters bring professional‑grade performance to your shack.

ATF-6340 Additional Features & Specifications

• RF Connectors: N-Type female

• Weight: 0.44lbs. (0.2kg)

• Mounting and Working Environment: Indoors, any position.

Electrical Characteristics of the 6340 Band Pass Filter

• Frequency Range: 144-450MHz

• Nominal Impedance: 50-Ohm

• Input Return Loss: Better than -26 dB

• Maximum SWR on any frequency: <= 1.11

Maximum Power Input @SWR

• 1:1 - 200W

• 1:1.5 - 140W

• 1:2 - 110W

• 1:3 - 75W

• Insertion Loss:

• 1.8 MHz: 110 dB

• 3.8 MHz: 103 dB

• 7.05 MHz: 102 dB

• 14.02 MHz: 101 dB

• 21 MHz: 89 dB

• 28 MHz: 89 dB

• 50 MHz: 51 dB

• 54 MHz: 46 dB

• 70 MHz: 30 dB

• 87.5 MHz: 13 dB

• 144 MHz: 0.07 dB, RL –35 dB

• 148 MHz: 0.07 dB, RL –35 dB

• 430 MHz: 0.12 dB, RL –26 dB

• 440 MHz: 0.11 dB, RL –41 dB

• 450 MHz: 0.14 dB, RL –23 dB

• 720 MHz: 28 dB

• 864 MHz: 38 dB

• 930 MHz: 41 dB (GSM)

• 1000 MHz: 44 dB

• 1296 MHz: 58 dB

• 1500 MHz: 64 dB