Some operators claim that this helps cut down on fatigue during long operating sessions when using stereo reception. There is a second stereo headphone jack on the main box. with a switch labeled follow a or b only. ... The wiring bundles going to each radio are set up to accommodate external DSP filters, something that can bring a high- quality older transceiver up to aquot;modernaquot; ... Two sets of paralleled, diode-isolated RCA phono jacks (J3 through J6) are mounted on the main box.
|Title||:||The ARRL Handbook for Radio Communications|