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Antennas, Accessories & Ground

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Some thoughts on shack earthing

I was a SWL in the mid-1970s and the antenna I used with a Philips transistor portable receiver was a long wire at a height of about 50 feet. One summer afternoon, the receiver front end (AF117) blew right after a loud crackle of static. 


Then again, my first tube homebrew CW rig had a 3-pin mains supply plug. The antenna was a straight dipole 50 feet high. Operating on a summer afternoon, I received a jolt through my Junker CW Key and survived to hear the crash of thunder from a nearby lightning strike. I immediately yanked the twin-line feeder and threw it on the floor (upper floor of my 2 storey house). After a few moments I was surprised to see the arc from the banana plugs to the cement floor.


Those days, in our sparsely populated area, my antenna was way above other surrounding structures. During thunderstorms…


12 Views

3d printed Painter Pole Base

Not much to say here - I have a temporary VHF antenna up on a Painter Pole that is being used as a support mast. This is a simple base to keep the bottom from wandering around.


It is sized so that my pole drops into it with a couple of cm to spare. Tinkercad or a slicer program can be used to scale it up or down if a snugger fit is desired. It sould be suitable for PVC pipe or large dowels



as well.


Win W5JAG

9 Views

This is impossible to find, but here it is. Vernier Reduction Drive 6 to 1, for tuning. Yeah !!!


ree

https://mgs4u.com/product/vernier-redu

165 Views
nzerowva
Nov 08, 2023

Good price, too. MFJ used to sell them but I dont see them on their site any more even though their equipment still uses them.

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