[Elecraft] KPA500 Transformer

[Alan - G4GNX]

Then perhaps someone needs to educate Elecraft not to specify use of a 
torque wrench, in their assembly instructions. ;-)

73,

Alan. G4GNX


------ Original Message ------
From: "Bert" <ve3nr at bell.net>
To: elecraft at mailman.qth.net
Sent: 20/10/2020 05:15:21
Subject: Re: [Elecraft] KPA500 Transformer

>Toroidal transformers cause very little acoustic hum, unless the core
>is not tightly wound or the copper wire windings are loose!
>
>If you have to tighten the mounting bolt with a torque wrench
>to get the transformer quiet, something is wrong!
>
>Bert VE3NR
>