[Antennas] CushCraft R-7 problems

[JK]

Is this a new and unused antenna???  Maybe a bad trap/coil


Jay....NE2Q


On Sun, Dec 27, 2015 at 01:29 PM, Robert G Strickland wrote:

> I have put up a CC R7 and can't get it to "work." CC has replaced the 
> match box. Twice, I have taken it down, cleaned all connecting 
> surfaces and put it back up. I have a lot of mechanical experience, 
> and I'm generally satisfied that I assembled it correctly. Using an 
> MFJ256B at the antenna, there is no resonant frequency dip on 30m, 
> 17m, 15m and 12m; on these bands the SWR is generally flat in the 2.5 
> to 7.5 range. On 40m there is a distinct dip at 7.05 MHz with SWR 
> 2.5:1. On 20m there is a distinct dip at 13.850 MHz with SWR 2.5:1. On 
> 10m there is a dip at 27.500 MHz with SWR 2.3:1 . Also, when taking 
> these readings there was a slight breeze and the SWR measurements were 
> extremely unstable even though the vertical is guyed just below the 
> traps. Aside from the usual comments about verticals and CC in 
> particular, these results seem way out of line to me. A local ham has 
> one, and using the 256B shows results that generally agree with those 
> in the back of the assembly instructions. Any suggestions much 
> appreciated. Happy New Year to all.
>
> ...robert
> -- 
> Robert G Strickland, PhD ABPH - KE2WY
> rcrgs at verizon.net.usa
> Syracuse, New York, USA
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