去專賣PDA及GPS的店裡晃一圈問問看,其實還是有些Sirf III的機種有外接天線可以選購,例如我買GS-R238就有外接天線可以買,而且我也加裝上去了,原因不是隔熱紙收訊問題(我的根本就是前檔就會檔Sirf II的收訊了),裝上去不用天線就能收到,只是我想把他藏在中央扶手裡面,加上電源和天線後,不用把他拿出來丟在前檔曬太陽,也不用為了充電問題煩惱。
I bought one yesterday afternoon after some tests, my original target was GS-R238. It worked fine so far, the next test would be the reliability.