Dow Key relay chatter problems

[W5EUQ]

Also, coils become damaged and weakened too....   Bob

George Maier wrote:
> I have three Dow-Key 110VAC coaxial relays. Two are the older black body DKC
> type and one is a newer silver body DK60 type.  When actuated, the two black
> body relays seem to hum and chatter regardless of how the tension is
> adjusted between the internal contact and the transmit connector.  The newer
> relay works flawlessly, as do all the two 110VAC Advance relays that I have.
> Short of pitching the Dow-Keys in the dumpster, does anyone know of cure for
> this behavior? 
>
> Thanks & 73,
> George - W1LSB
>
>  
>
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