Hi Mike, An EZNEC model using 30 feet AGL and Q=200 for the coils, has a very close match the the reported values.
20M, the antenna does not seem to degrade form a simple dipole with a Gain of about 6 dBi at about 30 degrees elevation. 80M, it's about 5 dBi at 90 degrees elevation. Expected from a low dipole. The impedance at resonance is about 25 Ohm, so should have a SWR about 2. A lower measured SWR may be the result of other system loses. I'd suggest this antenna is a good option for the constraints imposed. John KN5L On 05/28/2018 11:39 AM, Michael Blake wrote: > The center sections of the dipole are tuned for resonance at about 14.15 MHz > and the end sections, past the loading inductors on each dipole leg, are > tuned for resonance a 3.7 MHz. The resonance dips at both frequencies are > quite sharp and the SWR on both bands is less than 1.5 to 1. ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
