Tad Danley wrote:
How do the small low profile omni mobile for VHF and UHF compare in
performance to conventional 1/4 wave (VHF) and 3 dB gain (UHF)
antennas? I have a hard time believing they are anything close to
comparable.

Antennex sells a VHF unity gain model (TRABT-1420) and a UHF 3 dB gain
model (TRAB-4303). They also hold a patent on 'field diverse' antenna
technology. http://www.antenex.com/pdfsandzips/megwhitepaper.pdf

I know these antennas are very popular for public safety applications -
does anyone have real world A:B comparison data comparing them with a
conventional mobile antenna?

Thanks and 73,

Tad Danley, K3TD

Check out a 1/2 wave DLM shortened to about 3/16 ... good performance
and small size ... you can get smaller, but performance will decline.

Beats catching bugs! (or, a Texas Bug Catcher!)

Regards,
JS