1. R

    Could anyone share knowledge of double balanced diode RF MIXING circuits?

    Hey all, I am in a senior capstone group with the objective to create an RF mixer capable of going to (at least) the 2400-2483.5 MHz range. My group's focus has been to use a double balanced diode mixing circuit to achieve this. The difficulties in this has been finding a relevant schematic to...
  2. D

    How to listen to two radios simultaneously with headphones?

    I am setting up a small system that consists of a Kenwood TM-V71A dual band and a Uniden SDS200 scanner. I would like to monitor both radios simultaneously through a mixer; one signal in one ear, the other in the other ear. When something of interests presents itself, I want to simply turn...
  3. W

    Receive Audio Quality and Control

    Audio Quality and Control Most scanners and ham radios have mediocre speakers and audio amps. For example my 2 ICOM HF Ham rigs have 3 watt audio amps with 10% Total Harmonic distortion (10% THD). With speakers facing upward, the resulting audio can leave a lot to be desired. Many scanners have...