Frank's wrote:
Assuming a 7 ft monopole, with a lumped element inductor
(located in the middle of the vertical) of Q = 500,
and 100 W input. The total radiated (sky wave) power is 1.4 W.
The gain is -12.7 dbi with a take-off angle of 23 degrees.
At resonance the input impedance is 14 ohms.

And the Q of a hamstick is probably a lot closer to 50
than to 500. Someone else reported the hamstick as -20 dBd.
--
73, Cecil http://www.w5dxp.com

And the Q of a hamstick is probably a lot closer to 50
than to 500. Someone else reported the hamstick as -20 dBd.

I would think it would be hard to design a coil with a Q of 50.
I tried to find a picture of a Hamstick to estimate the Q,
but no luck. Anyway, assuming the Q is 50, NEC returns
the following results:

Structure efficiency - 5%
Total radiated sky wave (with 100 W in) = 180 mW.
Input impedance - 112 ohms.

73,

Frank

Structure efficiency - 5%
Total radiated sky wave (with 100 W in) = 180 mW.
Input impedance - 112 ohms.

PS -- and the gain is -23 dbi at a 20 deg TOA.

Frank's wrote:
PS -- and the gain is -23 dbi at a 20 deg TOA.

Someone measured it at -20dBd so that may be
fairly accurate.
--
73, Cecil http://www.w5dxp.com