line level output

I work for a law enforcement agency in Pennsylvania and we will be moving our office to another location. In doing so, we are going to mount ceiling speakers in each area of the office and have them hooked up to an amplifier. The issue is getting the sound from our APX4500 to the amplifier. I...

I am gratified to own a scanner that has a built in discriminator tap. The problem is that as soon as I insert a plug into the headphone jack, the speaker audio is muted although I am tapping into the discriminator output. How can anyone compare the audio quality from DSDdecode+ or any other...