You can now help support WorldwideDX when you shop on Amazon at no additional cost to you! Simply follow this Shop on Amazon link first and a portion of any purchase is sent to WorldwideDX to help with site costs.
I have a FOUR wire D104 from 1975 I am trying to wire to a Royce 1-621. When wired according to every diagram I have found 1- White 2- Shield 3- Red 4- Black, it screeches from the speaker. Keyed up it is fine, good modulation but as soon as I unkey it squeals like a stuck pig from the speaker...
This forum does not allow a single user to have more than one username. If anyone wants to change their username contact an admin and it will be done. Multiple accounts belonging to the same member will be deleted without warning.