[TowerTalk] GPS receivers

[Steve]

I've been playing around with the HFTA software that comes with the 
current edition of the Antenna Handbook. The Help recommends use of a 
GPS receiver to determine lat/long for the site under analysis.

Anyone have recommendations as to what type, brand or model of GPS I 
should buy? Any particular GPS receiver features that are must have 
versus nice but not essential? As far as I know at this point, the only 
thing I want to do with the GPS receiver is determine lat/long 
coordinates for HFTA analysis.

Thanks.

Steve