[ARC5] AN-104 aircraft antenna copper sheathing

Ken Gordon kgordon2006 at frontier.com
Fri Jan 12 00:18:35 EST 2024


On 12 Jan 2024 at 2:20, Hubert Miller wrote:

> Tim, that reminds me. Besides the copper tape i still have, i also
> have a glass plate that i intended for a crystal regrinding project.

Well, to my mind, grinding on a glass plate is much too messy, requires too much work, and 
if way too "iffy" for me. It is too easy to ruin crystals.

I prefer to etch my crystals to frequency.

As I and one or two others here have mentioned, use Whink Rust Remover. That has 1% HF 
in it. It does the job just fine, although at that concentration, it is slow. But in this case, "slow" 
is exactly what you want. 

Ken W7EKB


More information about the ARC5 mailing list