Topband: Recommended Antennas for 160M/80M Receiving

2014-12-21 Thread Mack McCormick
Friends, I need to really increase my country count on 160M so I've decided to installed dedicated receiving antennas. My home is on a 6 acre rectangular lot so I have room for a couple of 800 ft beverages at 90 degree angles or an 8 element circular array. I've been carefully following the

Re: Topband: Recommended Antennas for 160M/80M Receiving

2014-12-21 Thread Tim Duffy
Hello Mack My experience: I have operated 28 years on 160 meters from the same QTH. I started out with Beverages - which I thought worked great. The 880 foot one aimed at Europe was amazing. So I thought. 10 years ago I started experimenting with short vertical RX arrays. Passive elements at

Re: Topband: Recommended Antennas for 160M/80M Receiving

2014-12-21 Thread Jim Garland
Mack, I use two DXE bi-directional beverages, each 720 ft long, fed with a single 300 ft length of direct burial quad shield RG6. The DXE transformers and relay switching boxes use high quality weather-proof construction. That said, the ladder line caused me nothing but continuing maintenace

Re: Topband: RUSSIAN 160 METER CONTEST

2014-12-21 Thread Milt -- N5IA
Vlad, Your message finally received here. Thank you for responding. The situation you mention for the contest sponsors is a 'Catch 22' situation. They are never going to get more participation if they limit the contest time to such a short window. And they surely are never going to get

Re: Topband: Confusion in ON4UN's Low Band DXing radiallengthcalculations.

2014-12-21 Thread k1fz
Look at the radial field as a FAT inductor. A fat tower has a lower Q and wider bandwidth, lower impedance at the top/far end.   73 Bruce-=k1fz.   On Sun, 21 Dec 2014 10:10:32 -0500, w4...@aol.com wrote: GM BRIAN... I HAVE BEEN OFF TOP BAND FOR SEVERAL YEARS NOW, AND NOT AS

Re: Topband: Recommended Antennas for 160M/80M Receiving

2014-12-21 Thread Mack McCormick
Jim, Tim, and Tim, Thank you all for some really great advice. Perhaps I should look more closely at the 8 element receiving arrays. Are most of the 160M contest stations now using receiving array's vs. beverages? Since I'm moving to a new QTH I'd really like to have a best practice installation

Re: Topband: Recommended Antennas for 160M/80M Receiving

2014-12-21 Thread Jim Brown
On Sun,12/21/2014 6:11 AM, Mack McCormick wrote: I've been carefully following the discussion about the merits of various 8 element arrays and beverages. I suggest that you study W3LPL's excellent presentation on 160M RX antennas from K3LR's Contest University at Dayton this past spring. The

Re: Topband: Non-resonant receive antennas

2014-12-21 Thread JC
Hi Dick I never noticed any difference in receiving performance That's exactly what we should expect using a resonant dipole, it interact with any other antenna because the fiscal length is resonant, does matter if the feed impedance, if it is only a straight wire resonant it is like a director

Re: Topband: Recommended Antennas for 160M/80M Receiving

2014-12-21 Thread Roger D Johnson
I just drafted a reply to Mack's question delineating the problem I've had with my vertical arrays. After I sent the e-mail, an idea popped into my head. I wonder if my problems have to do with ground conductivity? The soil here in New England is poor (2 mS) and beverages are known to perform

Re: Topband: Recommended Antennas for 160M/80M Receiving

2014-12-21 Thread Eddy Swynar
On 2014-12-21, at 12:23 PM, Roger D Johnson wrote: I just drafted a reply to Mack's question delineating the problem I've had with my vertical arrays. After I sent the e-mail, an idea popped into my head. I wonder if my problems have to do with ground conductivity? The soil here in New

Re: Topband: Non-resonant receive antennas

2014-12-21 Thread Tom W8JI
When talking about a low dipole, the question comes up as to why it must be low to work. Actually we don't know that it must be low to work. Very few of us are in a position to put up a high dipole, so the question is basically moot. However, in an attempt to gauge the influence of height, I

Re: Topband: 8 circle: DXE vs Hi-Z

2014-12-21 Thread Tom W8JI
The HI-Z was erected quite aways from anything else which involved bushwhacking and clearing the entire circle, trenching almost 1200 feet of feedline etc so there was a lot of sweat work done on that project. But on 160 and 80 where I have the tx antennas to use as a comparison, the

Re: Topband: Non-resonant receive antennas

2014-12-21 Thread Richard (Rick) Karlquist
On 12/21/2014 7:58 AM, JC wrote: This long answer is to validate your observation, resonant dipoles does not provide any difference in receiver performance than your vertical or TX antenna. I didn't say that. I said that there was no difference between a dipole at 30 feet and a dipole at

Re: Topband: Recommended Antennas for 160M/80M Receiving

2014-12-21 Thread Joel Harrison
Mack, My actual on-the-air test and experience at my QTH in Arkansas has revealed the 8 vertical array systems outperform beverages. I wrote an article with graphs showing the signal performance difference over one low band season that I can direct you to if you are interested and also provide

Re: Topband: Recommended Antennas for 160M/80M Receiving

2014-12-21 Thread Mack McCormick
Joel, Thank you very much for your kind reply. Do you have a preferred model of 8 element array that will perform well on 160M and 80M? Yes, I'd love to read the article. Of course, I belong to the ARRL. Vy 73, Mack W4AX Mack On Sun, Dec 21, 2014 at 4:27 PM, Joel Harrison w...@w5zn.org