Antennas Amplifiers bandpass filter 144-148 MHz, 1500W

Technical description BPF-2M-1.5K

The bandpass filter for 144 - 148 MHz from Antennas Amplifiers is designed for a maximum power of up to 1500W. To avoid a change of the filter curve when heating up, the filter is actively cooled with a fan. Very low insertion loss of better than 0.09 dB in the passband.

Attenuation:

1.8MHz: -100 dB

3.8MHz: -91 dB

7.1 MHz: -81 dB

14 MHz: -67dB

21MHz: -58dB

28 MHz: -51 dB

50 MHz: -34 dB

54 MHz: -31 dB

144 MHz: -0.09 dB

145 MHz: -0.086 dB

146 MHz: -0.09 dB

148 MHz: -0.089 dB

Harmonics and interfering signals:

• 288 MHz: -40 dB
• 296 MHz: -37 dB
• 430 MHz: -41 dB
• 432 MHz: -42 dB
• 440 MHz: -44 dB
• 576 MHz: -36 dB
• 720 MHz: -34 dB
• 880 MHz: -33 dB (GSM)
• 930 MHz: -31 dB (GSM)
• 960 MHz: -29 dB (GSM)
• 1296 MHz: -17 dB

Equipped with 2 x N jacks on the top of the housing.

Application description BPF-2M-1.5K

Even the most widely used VHF band - the 2m band - suffers from interference from neighboring transmitters and electronic equipment. A bandpass filter can help reduce these signals. In addition, Antennas Amplifiers' 2m bandpass filter suppresses harmonics in your own signal that may be objectionable to your neighbor.

The BPF-2M-1.5K is not weatherproof and is used in the shack in front of the transceiver or receiver. With the maximum permissible transmit power of 1500W (at SWR of 1:1), the filter can be used with most commercially available transceivers and many power amplifiers.