Re: Topband: low inv-vee

2018-03-28 Thread HP
I was going to stay out of this low inv vee antenna - probably should - but here goes. The short remark is I believe N6RK comments are true - its a top loaded vertical with a little inv vee thrown in . The long story is below - read at your own riisk. In about 9 years I am at 126

Re: Topband: low inv-vee

2018-03-28 Thread Wes Stewart
Could be. An effective balun on 160 isn't trivial, but then the questions are at least twofold. 1) How ineffective is it and what are the relative currents on the intended radiator compared to the incidental radiator and 2)  what constitutes the ground plane?  On my cactus patch I'm working my

Re: Topband: low inv-vee

2018-03-28 Thread Wes Stewart
We live in two countries separated by a common language. In the states, we consider any wire in a "v" shape suspended upside down to be...wait for it... an inverted vee, regardless of height as far as I know. Are you suggesting that in Merrie Olde England there is a specified angle between

Re: Topband: low inv-vee

2018-03-28 Thread Mark K3MSB
I don't think so. In my Electromagnetic Fields and Waves class in EE school (way back when dinosaurs just stopped roaming the earth and Constellations still graced the skies...) the prof derived the equation for a received signal. The polarization terms disappeared after the first ionospheric

Re: Topband: low inv-vee

2018-03-28 Thread Guy Olinger K2AV
Amen. 73, Guy K2AV On Wed, Mar 28, 2018 at 9:24 PM, Richard (Rick) Karlquist < rich...@karlquist.com> wrote: > One thing about an inverted vee on 160 that can > confusing: if you don't go to a lot of trouble to > have a really effective balun, you end up having > feedline radiation. In the

Re: Topband: low inv-vee

2018-03-28 Thread Richard (Rick) Karlquist
One thing about an inverted vee on 160 that can confusing: if you don't go to a lot of trouble to have a really effective balun, you end up having feedline radiation. In the case, you really have an inverted L. This is related to articles written about so called "loop skywires" where they say:

Re: Topband: Wednesday 160m DX Activity Night

2018-03-28 Thread Brad Rehm
Roger, A big front went through central Texas today, leaving us with 20-40 dB over S9 QRN. Parts of the area got 12 cm of rain, and the front extended all the way up to VE3-land. As always, we needed the rain, but let's hope for better condx next week. 73, Brad KV5V On Wed, Mar 28, 2018 at

Re: Topband: XM240 Hi-Q coils

2018-03-28 Thread John Harden, D.M.D.
Interesting guys. I have had up a full size Telrex monobander (2 el) since 1995. It has 66 ft full size elements on a 14 foot boom. It has been a killer since it went up. One of the best investments I have ever made. It is 6 ft above an M2 rotary for 80/75 at 112 ft. 73, John, W4NU K4JAG 1959

Re: Topband: low inv-vee

2018-03-28 Thread Steve Maki
Interesting. Some say that on 160 vertical polarization rules, while on 80, horizontal polarization rules (or at least *often* rules). Of course polarization and angle of arrival are two different things... -Steve K8LX On 03/28/18 17:23 PM, Roger Kennedy wrote: Well I've said it before and

Re: Topband: XM240 Hi-Q coils

2018-03-28 Thread Steve Babcock
Hi Bill, (If you don't mind, I have shared this to the reflector since I have rx’d other similar questions) I have lately been using 4NEC2 (free and very good program: http://www.qsl.net/4nec2/ ) My model is not a “standalone” 40m yagi, but includes the 80m Yagi on

Re: Topband: Wednesday 160m DX Activity Night

2018-03-28 Thread VK3HJ
Wednesday night was positively awful from VK3. I called CQ for nearly an hour and gave up with no calls, and only local RBN reporting. By contrast, Tuesday night was quite good to NA, with a number of USA and a handful of Canadian stations, and one Japanese station calling! 73, Luke VK3HJ

Topband: Wednesday 160m DX Activity Night

2018-03-28 Thread Roger Kennedy
Well, I'm not sure if it has been poor conditions, or a just a lack of activity . . . But I've not heard many North American stations on the band lately. Hopefully we'll have some activity tonight ! I'll be on as usual (about 1.828) from around Z . . . there's usually other Europeans on

Topband: low inv-vee

2018-03-28 Thread Roger Kennedy
Well I've said it before and I'll doubtless say it again . . . In my experience, most DX propagation on 160m ISN'T low angle (unlike 80m when it nearly always IS.) For the past 45 years, at several different QTHs I've always used a horizontal co-ax fed halfwave dipole, only 50ft high . . .

Re: Topband: low inv-vee

2018-03-28 Thread Brian Campbell
ld have finished the QSO. > > > So the Inverted V definitely stays up. > > > Carl I am a believer :-) > > > 73, > > Brian > > VE3MGY > > --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus [https://

Re: Topband: low inv-vee

2018-03-28 Thread Jeff Wilson via Topband
I have always used an 80m inverted-vee (66.6 ft per side) with apex at 50ft at top of a yagi-free tower attached to a steel workshop and fed with 450 ohm ladder line and shorted at the tuner in the shack to work as a top loaded vertical (35ft is actually vertical, rest of the feedline mostly