[TowerTalk] Transmission Line calculator

[Bill Aycock]

TowervTalkians--
Not strictly about towers, but related.
I have heard of an improved version of the Transmission Line calculator called “TLW”. The original was in several ARRL antenna books. I heard that the new version was mentioned in a recent QST, but I have not found it. One is supposed to be able to get a download, if one is a member.
Can anyone help with a reference?
Thanks—Bill—W4BSG