Antennas-Amplifiers 6530 70cm 200W Low Loss Band Pass Filters are designed for stations requiring low insertion loss and reliable front‑end protection across the 430–450MHz range. Capable of handling up to 200 watts of transmit power, these filters are equally effective in both transmit and receive applications—introducing only 0.12dB of loss while sharply attenuating out‑of‑band signals.

Installed after a 200 watt transmitter, the 6530 helps suppress unwanted emissions and reduces interference into neighboring bands. When positioned ahead of a wideband preamplifier, it prevents overload and desensitization caused by strong signals outside the passband, making it ideal for weak‑signal, contesting, repeater, and EME applications.

The 6530 filter employs high‑Q coils and capacitors with unloaded Q values exceeding 1500, ensuring steep skirts and excellent selectivity. For durability, a rigid 0.8 mm brass enclosure provides mechanical stability and long service life. N‑type female connectors ensure secure, low‑loss connections.

Key Features

- Narrow 430–450 MHz passband

- Ultra‑low insertion loss (~0.12 dB)

- Suitable for transmitting up to 200 W

- High‑Q components (Q > 1500) for high selectivity

- Prevents overload in wideband LNAs and preamplifiers

- Rugged 0.8 mm brass housing

- N‑type female connectors

Additional Specifications

• 1.82MHz: < -105dB

• 3.8MHz: < -105dB

• 7MHz: < -105dB

• 14MHz: < -105dB

• 21MHz: < -100dB

• 28MHz: –96dB

• 50MHz: –80dB

• 54MHz: –78dB

• 70.2MHz: –71dB

• 88MHz: –65dB (FM Signal)

• 108MHz: –60dB (FM Signal)

• 144MHz: –50dB

• 148MHz: –49.5dB

• 430MHz: -0.12dB, Input RL better than -35dB

• 432MHz: -0.12dB, Input RL better than -35dB

• 440MHz: -0.12dB, Input RL better than -35dB

• 720MHz: –26dB

• 864MHz: –35dB

• 1240MHz: -45dB

• 1296MHz: -45dB