RadioBanter - View Single Post - SUPER J-POLE BEATS YAGI BY 1 dB

February 8th 05, 08:18 PM

On 8 Feb 2005 11:55:02 -0800, wrote:

I would like an H-plane plot, if possible,
and i'm looking for a cardiod pattern, as above,
but with higher dBi if possible.

Try google, or better yet do a little work. I've already done a fair
bit.

2 bays is big and heavy enough! 4 would be
a bit overkill in this situation.

Not likely.

I've tried using an SO-239 attached to the
antenna itself (as they have done here), and it's
a bad idea...pot metal is very weak.

It's a good idea, use a good connector, most of the quality ones are
nickel or siver plated brass. The ratchack ones are garbage. I
prefer Type N connectors as they are easier to waterproof and good
ones are quite solid.

yeah, but UHF versus VHF is gonna be a huge
difference weight and size wise!

Yep, 3:1. Use light metal. Though using 1/2 inch copper is not as
heavy as it may seem as it's also structural. I have built them for
VHF too.

Of course for 100mhz FM use they do grow a bit and may be too obvious
for a stealth operation.

The rules are simple. Want more signal, put up more metal.

Allison