[Antennas] CushCraft R-7 problems

Sun Dec 27 17:56:40 EST 2015

How far away from ur house? Have aluminum siding. Any towers nearby? Any 
vertical wires or metallic objects near the antenna?
Check continuity w/ohmmeter?
Jay...NE2Q
On Sun, Dec 27, 2015 at 05:29 PM, Robert G Strickland wrote:
> Hi, Jay...
>> Brand new!
>> ...robert
>> On 12/27/2015 21:01, JK wrote:
>> 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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>>>>>>> -- 
> Robert G Strickland, PhD ABPH - KE2WY
> rcrgs at verizon.net.usa
> Syracuse, New York, USA
>