40/15M dipole question
On 4/6/2011 2:51 PM, John - KD5YI wrote:
On 4/6/2011 6:28 AM, Cecil Moore wrote:
On Apr 6, 5:56 am, wrote:
What SWR reading could I expect to see from this antenna if I tried
to use it at 21.300 mhz........in the same environment as stated
above?
EZNEC sez 11:1 with a feedpoint impedance of 100-j200 ohms.
--
73, Cecil, w5dxp.com
Hey Cecil -
I got:
Impedance = 85.26 - J 186.3 ohms
SWR (50 ohm system) = 10.337 (75 ohm system) = 7.308
Let's see if we can determine why they don't match.
I adjusted the wire length for no reactance at 7.2 MHz.
I used 99 segments of #14 wire. I did not include insulation effects.
How about yours?
John
Are you using 9 segments?
John
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