Re: Topband: Inverted J antennas?

2021-01-11 Thread Mike Smith VE9AA
Awesome. Thank you very much Dave ! Mike, Coreen & Corey Keswick Ridge, NB From: Dave Cuthbert [mailto:telegraph...@gmail.com] Sent: January 11, 2021 5:59 PM To: Mike Smith VE9AA Subject: Re: Topband: Inverted J antennas? Okay, over "medium" GND (0.005S/13) it has the same elevation

Re: Topband: Inverted J antennas?

2021-01-11 Thread Mike Smith VE9AA
Hi Dave and thank you. That was quick. I guess I should’ve been clearer with my question. What does the elevation pattern look like please? Mike, Coreen & Corey Keswick Ridge, NB From: Dave Cuthbert [mailto:telegraph...@gmail.com] Sent: January 11, 2021 5:35 PM To: Mike Smith VE9AA

Re: Topband: Inverted J antennas?

2021-01-11 Thread Dave Cuthbert
Hi Mike, your inverted-J in EZNEC shows a radiation resistance at 1850kHz of 10 ohms. It is resonant at 1800kHz. With the 50' vertical wire removed it is resonant at 2.7MHz and has a radiation resistance at 1850kHz of 11 ohms. Dave KH6AQ On Mon, Jan 11, 2021 at 10:52 AM Mike Smith VE9AA

Topband: Inverted J antennas?

2021-01-11 Thread Mike Smith VE9AA
Has anyone modeled an inverted J on 160m ? (almost an inverted U, really) I currently have only one left (the other half of my 2-el array blew down and I've been lazy to replace it) and it "works" but not as good as it could I think if I had better supports (ie: taller trees, wider yard). I