View Single Post
  #7   Report Post  
Old February 27th 08, 07:02 AM posted to rec.radio.amateur.antenna
K7ITM K7ITM is offline
external usenet poster
 
First recorded activity by RadioBanter: Jul 2006
Posts: 644
Default LPY antenna designs?

On Feb 26, 7:07 pm, wrote:
what's the high and low frequency you want to cover and how long do
you want the boom to be?
me

On Sun, 24 Feb 2008 18:17:58 -0800 (PST), K7ITM wrote:
On Feb 24, 4:37 am, "Dave" wrote:
"K7ITM" wrote in message


...


Anyone have any practical LPY (log-periodic Yagi) antenna designs they
care to share? Something with about 4% or 5% bandwidth in the VHF/low
UHF range should do well--the element diameters should be appropriate
for scaling the design to my frequencies of interest. 10dBi or so
gain is probably fine.


Cheers,
Tom


Let's see...500MHz to 1.05*500MHz = 525MHz; boom long enough to get me
about 10dBi over that range. I'll scale it to my particular
frequencies of interest, so any other ~5% bandwidth in that general
vicinity of frequencies would be fine too.

Cheers,
Tom