Thread: LPY antenna designs?
View Single Post
  #9   Report Post  
Old February 28th 08, 04:06 AM posted to rec.radio.amateur.antenna
[email protected] no@spam.net is offline
external usenet poster
  
First recorded activity by RadioBanter: Jun 2007
Posts: 19
Default LPY antenna designs?
On Wed, 27 Feb 2008 22:29:01 -0500, wrote:

On Tue, 26 Feb 2008 23:02:37 -0800 (PST), K7ITM wrote:
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

Log-Yagi design. Four driven elements, reflector & director.
Probably about 8 dBi maybe.

Ele Length Position
R 1.019' 0
DR1 0.984' 0.168'
DR2 0.924' 0.266'
DR3 0.868' 0.359'
DR4 0.815' 0.446'
D 0.902' 0.742'

Split DR1-DR4 and transpose feed. Place hairpin at DR1 if needed
for matching.

Reply With QuoteReply With Quote