More Range from a Frequency Counter

[Smitty]

I have an Alinco handheld frequency counter. It works great but I would like to detect radio frequencies in the 300-450 Mhz band from a much greater distance. Wothout modification, I can pick up the frequencies from very low power transmitters from about 2 feet. Would a Broadband Preamp like the SA7 from http://www.ramseyelectronics.com/cgi-bi ... on&key=SA7
work well? Does anyone know how many preamps can be placed back to back and still get significant amplification? Any idea how many feet I may be able to increase the detecting distance? Thanks for any help you can provide.<p>Smitty

[keymaker]

Off the top of my mind...
I remember we usedto have directional antennas for CB radio.. Called them a yagi or something.<p>Can you possibly get one for your counter??