Topband: Inverted L's etc

[Michael Fischer]

Stan - LOVE "just my 2Hz worth" stealing that from you om!

First of all thank you to each one of you who have contributed your thoughts particularly around the mechanical considerations for suspending the InvL, You guys are great teachers. Says the guy whose dad was the ME in the family and raised a son who had a tough time with math so he went into sales...  I am grateful for the grace you guys have for those of us to whom engineering does NOT come naturally..

FWIW, my weapon of choice for the past several years for launching lines over very high tree limbs has been the PVC cannon discussed in QST some number of years ago. My only changes to the design have been (1) to fill the projectile (also made from PVC) with lead fishing weights, initially so it could pull the monofilament I was using as a tag line back down the other side of the Douglas Firs which present a lot of friction.

I learned that (2), braided fishing line is lighter, tangles far less ( limp by nature), weighs much less and therefor can be shot much higher, presents less friction over the branch (almost guaranteeing you can get it to drop back to earth) and is much stronger as a tag line for pulling the heavier rope or paracord etc back over the branch ( that you ultimately use for suspending the antenna).

The PVC cannon is very accurate and I often get compliments from people about being able to choose the branch and put it exactly where I want it. Its' a great tool. I can comfortably shoot the projectile over 125' with approximately 90PSI in the cannon

Hope this helps someone..

73,
Mike
K7XH (forever a TB newb)