[TowerTalk] Scaled Antenna

[Tom Rauch]

> There is nothing easier to scale than a quad with all the wire sizes
> available.  Spacing and wire length can be scaled exactly.  Why was there
> or what were scaling errors?  Wire size is critical.  Yagi's are really
> tough to scale in getting the exact tubing diameter.  I use model airplane
> brass tubing and then use the computer to duplicate the pattern with
> available tubing that will be used.

As I recall the error was feedpoint connection error. I'm sure we 
could do better today, with modern equipment. But back then 
running a model on 440 MHz to resolve fraction of a dB was 
unwise. 

The large loop improved ability to have a good feed system 
compared to a dipole driven element.

Ever try to do a dipole feedpoint on 440 MHz (the freq they used) 
with regular size coaxial cables? 
73, Tom W8JI
w8ji@contesting.com

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