WB2WIK
Member
Posts: 19940
|
 |
« Reply #1 on: April 02, 2002, 04:34:57 PM » |
|
Any height will work for this trap-tuned 1/4-wave ground plane antenna.
Normally, "the higher, the better," but with this particular high-Q design, distance from the antenna to surrounding objects to all sides is actually far more critical. Diamond recommends having nothing within 15 feet of the antenna, in any direction -- that would include walls, chimneys, other antennas, utility wiring, really anything. And it is fully understandable why they say that.
That is the #1 criteria for success with the CP-6A.
Assuming you can get >15' clearance in all directions, then the next thing to strive for is the highest mounting location possible.
Remember, this is a very high-Q, narrowband tuned structure which requires critical adjustment. If you install it up out of reach before adjusting it for resonance on each band, you'll have to take it down to make the adjustments. Thus, it's always nice to install an antenna like this in such a way that you can reach it, or at least reach all the tuned radial elements which assemble at the bottom of the CP-6A. Tuning this antenna is _extremely_ critical, and vital to its operational success.
WB2WIK/6
|
