There is nothing wrong with the $22 one. Only for fast birds,
you may want an aerodynamic shaped one.
Composite projects can even build the $22 jobs into wings, etc.

"Grandpa B." never.mind wrote in message ...
I'm starting the fabrication of a new boot cowl for the Champ project. The
transponder antenna got wiped off the bottom during the groundloop (no, I
didn't do it!), so I gotta get a new one.

I've seen the 'bargain' version in AS&S for $22 or so. Are they useful, or
should I spend the ~$60 for a decent one?

Anybody have one laying around that they no longer need?

Jon B.