850 MHz scanner preamplifier / filter project

850_MHz_Box_Inside

KF5OBS writes:

This article shows how to use off-the-shelf parts to improve the performance of a radio scanner in the 800 – 900 MHz band. Furthermore, it shows how to expand radio coverage by using two different receive antennas at the same time.
For some reason, my new BCD996XT scanner wasn’t working as expected on the statewide digital (APCO 25) radio system. Since this radio system is the primary reason why I got this new scanner, I had to come up with a solution. In addition, I really wanted to expand my receive coverage geographically. This article shows how to improve receive signal strength, greatly increase geographical coverage and reduce out-of-band interference.

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