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Yea Bob, you must have seen that thread over there where the guys play with themselves to much. I'll wait on Multi-mode's measurements, he would be far more accurate. Most of those guys don't know what diameter means.

 

007, ole' Bob is not very encouraging about the possibilities for your success, considering that different locations and heights need different measurements, right? I wouldn't let it discourage you though, cause he also said several other buddies showed similar results in maximizing the Vector 4000's performance over the stock setup.

 

Can you wait for mm200's measurements? Personally I don't find the Sigma 4 design to be easy to tune physically and until the New Vector came out there never was much tuning information supplied with these antennas. At best most were set it, and forget it.

 

Unless you have a good mounting setup that allows you to get up high enough on this long antenna, it can be difficult to reach the whole gamma setup area. Tuning while mounting depends a lot on your being able to safely reach the top and bottom of the gamma area without having to take the thing down, which can also be a chore. Just plan you mounting carefully.