Antennas-Amplifiers 6550 70cm 2500W Band Pass Filters

Antennas-Amplifiers 6550 70cm 2500W Band Pass Filters are extreme‑power 70cm band pass filters engineered to handle the most demanding UHF stations. Designed for operation across the 430–450MHz amateur band, these filters support RF power levels up to 2.5kW, making them suitable for high‑power stations and commercial‑grade 70cm linear amplifiers.

Despite their high‑power capability, the 6550 series achieves an exceptionally low insertion loss of just 0.06 dB, and with the integrated 12VDC cooling fan, they maintain efficient signal transfer while keeping thermal rise to a minimum even during continuous high‑power operation.

Installed after a powerful amplifier, the filter provides outstanding suppression of unwanted emissions—attenuating lower‑frequency signals by 23 to 100dB and reducing harmonics by 26 to 60dB, depending on frequency.

Thanks to its ultra‑low loss and clean passband, the 6550 also performs exceptionally well in receive only applications. It can be used ahead of sensitive low‑noise preamplifiers employing ATF, PGA, SAV, or SKY devices, offering overload protection without degrading noise performance.

Additional Features & Specifications

Maximum Power Input at SWR:

• 1:1: 2500W

• 1:1.1.5: 1600W

• 1:2: 1350W

• 1:3: 1150W

Insertion Loss Specifications:

• 1.8MHz: < -110dB

• 3.8MHz: < -110dB

• 7.1MHz: < -108dB

• 14.15MHz: < -100dB

• 21.4MHz: -92dB

• 28.4MHz: -84dB

• 50.1MHz: -69dB

• 70.2MHz: -60dB

• 88MHz: -54dB

• 144MHz: -39dB

• 146MHz: -39dB

• 148MHz: -38dB

• 220MHz: -24dB

• 225MHz: -23dB

• 430MHz: -0.06dB, Input RL batter than -34dB

• 432.1MHz: -0.06dB, Input RL batter than -34dB

• 440MHz: -0.06dB, Input RL batter than -34dB

• 860MHz: -26dB

• 864.2MHz: -26dB

• 880MHz: -27dB

• 1240MHz: -64dB

• 1296.1MHz: -48dB