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Yeah, like that. I just noticed the 3-conductor 'phone' jack for the external display. Does the jack have an insulated plastic bushing? If not, a metal bushing will be at chassis ground. Bridging the circuit-board ground to the chassis ground nearly always produces ground loop problems. This radio uses a so-called "floating" ground for the chassis, with no DC connection between the power supply's negative side and the metal chassis. A jack with a metal bushing would bridge the chassis to the circuit-board ground.

73

[QUOTE="nomadradio, post: 855059, member: 22"] Yeah, like that. I just noticed the 3-conductor 'phone' jack for the external display. Does the jack have an insulated plastic bushing? If not, a metal bushing will be at chassis ground. Bridging the circuit-board ground to the chassis ground nearly always produces ground loop problems. This radio uses a so-called "floating" ground for the chassis, with no DC connection between the power supply's negative side and the metal chassis. A jack with a metal bushing would bridge the chassis to the circuit-board ground. 73 [/QUOTE]

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