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If it still chatters the relay, this suggests that the amplifier's input impedance is way too low, or maybe the power supply voltage is dropping when the relay is activated. Is there a meter showing the power supply's output voltage? If you see it drop when the relay chatters, you may have a power supply that's too small, or has a problem delivering the current it's supposed to.

More than one way for that to come about, including bad RF-power transistors.

73

[QUOTE="nomadradio, post: 655626, member: 22"] If it still chatters the relay, this suggests that the amplifier's input impedance is way too low, or maybe the power supply voltage is dropping when the relay is activated. Is there a meter showing the power supply's output voltage? If you see it drop when the relay chatters, you may have a power supply that's too small, or has a problem delivering the current it's supposed to. More than one way for that to come about, including bad RF-power transistors. 73 [/QUOTE]

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