Denno wrote:
Hi. I have spool of #12 industrial grade tin coated copper strand
wire that I had planned on building a 40 meter vertical loop with.
While scouring the web, I came across a white paper on wire, tubing
and RF compatibility, and it said that tin-coated copper was "somewhat
inferior", but silver coated or pure copper strand were fine for
antenna use. Contrary to this, I have read in this Newsgroup that tin
or silver coating is a must-have for good RF radiation.

Any views on tin coated copper strand?

Also, where do you all find Copperweld? It sounds ideal, but I
haven't been able to find it anywhere.

Thanks!

Ohhh gawd, it that a "loaded" question?

I would use it, the lead/tin darkens (oxidizes) with age, so does copper
and most other metals, gold would be nice--too expensive, stainless
would be nice--but then the ohmic losses, use it! ...

End of story...

It won't be the last antenna you construct, build it and learn!

Warm regards,
JS