Antenna steering

General discussion - When it doesn't fit anywhere else
VK2GFR
Frequent Poster
Posts: 78
Joined: Mon Sep 20, 2010 8:21 pm
Location: Sydney, NSW

Re: Antenna steering

Post by VK2GFR »

VK2XSO wrote:How would you use a slinky as a form of transmission line ?
(I can think of a couple of methods, but we'll use your brain for this exercise.)
:lol:
Well, the slinky would be similar to a twin line open feeder, only that the twin line feeder is normally housed in a can for the highest frequency required (short circuit). When the lower freq is chosen, the feeder is "released" from the can to provide a longer length.
Much the same as if it were a single line, end fed wire antenna (for restricted space).
As for the radiators, these too would need to be on a moveable horizontal mount.
Just like an adjustable pool-pole for picking up all the leaves (floaters) Ew.. :wink:
There by the slinky could be mounted around the pool pole with the required spacers?
Like I said Trash, you're doing my head in... but it is brain food you've provided!!!! :D
Mark, VK2GFR
Seven Hills
QF56LF
VK2XSO

Re: Antenna steering

Post by VK2XSO »

This is an example of a simple system using a 3dB hybrid.
The antenna type and feeder length don't need to be specific. The array is steered by changing the impedance of the load.
Attachments
Hybrid3dB.jpg
Hybrid3dB.jpg (10.93 KiB) Viewed 404 times
Post Reply