NACA field guide

Posted by: yannzola on 17 February 2004

Quick question: How does one spot the difference between NACA4 and NACA5? Solid core vs. braided? Identifying marks? Distinct mating calls? Just curious. Thanks.
y.
Posted on: 17 February 2004 by davidf
nac4 soft and pliable
nac5 stiff
arrows point towards the speakers
that`s all