Antennas‑Amplifiers 5980 6‑Meter 1500W Transmit Bandpass Filters are engineered for operators who demand absolute performance across the full 50–54 MHz 6‑meter frequency range. Designed to partner effortlessly with high‑power amplifiers—including 8877, GS35, GS31, 2×GI7B, and a wide range of tube‑ or transistor‑based stages—these filters confidently manage up to 1500 watts, making them an essential addition to any serious station. These filters employ high‑Q coils and capacitors rated above 4000, achieving remarkably low insertion loss through careful component choices and precise alignment.

While the 5980 series is optimized for clean, high‑power transmission, its architecture also excels in receive‑chain protection; when placed ahead of wideband LNAs such as those based on the PGA‑103+, these filters shield sensitive front‑end devices from powerful out‑of‑band energy. With outstanding suppression of harmonics—including deep attenuation at 100MHz, 150MHz, and beyond—these filters further deliver exceptional rejection of third‑order harmonics, as well as strong isolation on the 144MHz and 432MHz bands. A specially engineered notch provides deep FM‑band attenuation from 100–108MHz, and with more than 50dB of suppression on second‑harmonic content, the 5980 ensures that transmitted signals remain clean, compliant, and interference‑free.

Antennas-Amplifiers 5980 6-meter 1500W Transmit Bandpass Filters are Built for operators who expect both rugged reliability and top‑tier RF purity, these 6‑meter bandpass filters set the standard for high‑performance Magic Band operation.

Measured Characteristics of the 5980 6m Band Pass Filter Insertion Loss:

• 1.8 MHz: –79 dB

• 3.8 MHz: –60 dB

• 7.1 MHz: –43 dB

• 14 MHz: –18 dB

• 50 MHz: –0.08 dB

• 51 MHz: –0.085 dB

• 52 MHz: –0.09 dB

• 53 MHz: –0.09 dB

• 54 MHz: –0.09 dB

• 88 MHz: –27 dB

• 100 MHz: –51 dB

• 102.7 MHz: –83 dB

• 108 MHz: –50 dB

• 144 MHz: –46 dB

• 150 MHz: –45 dB

• 162 MHz: –47 dB

• 200 MHz: –49 dB

• 430 MHz: –58 dB

• 432 MHz: –55 dB

• 440 MHz: –41 dB

Maximum power input at SWR:

1:1 = 1500W

1:1.5 = 1200W

1:2 = 1000W

1:3 = 800W