On Feb 27, 8:06 pm, wrote:
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.

Thanks for both those designs. I'll have a look at them and see if I
can get reasonable modeling results, probably this weekend. I'd about
given up that anyone would have any designs to offer, and appreciate
that you put some effort into the replies.

Cheers,
Tom