Re: Topband: inv. L

Art I use two 65' verticals on 40/80/160. HALF WAVE tall (electrically) and spacing on 40m with LC network at the base to tune...QUARTER WAVE tall on 80 with same spacing and EIGHTH WAVE tall and spacing on 160m. Both verticals are fed in phase on 160 now but I have plans to add an LC

Re: Topband: inv. L

Thanks everyone. I plan to try it this weekend. 73 Art NK8X ᐧ On Mon, Oct 17, 2016 at 1:56 PM, Ray Benny wrote: > > - Original Message - > From: Mike Furrey > To: Art Snapper , 160 > Sent: Mon, 17 Oct

Re: Topband: inv. L

Art, I put one up this spring with the encouragement on this list. The L's are back to back, e.g. the 160M L points north while the 80M points south. The vertical sections are 45' and the spacing is about 18". Fed with a decoupling choke at the base over 32 65' radials. My amp tunes up with no

Re: Topband: 2-el array SWR question (160m)

Update: I didn't see my message appear on either reflector, so with only a couple hours of daylight of good sun (and wx this week looking bleak), I rolled the dice and went out an shortened each raised radial by 4.5'(by folding back the wire onto itself) and physically cut the vertical portion by

Topband: BOG antennas

We have learned a lot about BOG antennas thanks to research by Luis, IV3PRK/HC1PF.   The initals BOG was for Beverage On Ground.  He found that it did not function  as a Beverage when on the ground, but the pattern was better, noise generally lower. It may require a preamplifier in the radio

Topband: 2-el array SWR question (160m)

Today I installed 160m vertical #2 in what will soon become a Comtek PVS-2 (2el BS/EF) array for 160m. (vy recently I installed 3 Comtek (wire) 4-squares for 20, 40 &80m. Spacing is about 134’ for these two 1/4wl 160m antennas. (oriented NNE/SSW-best I could do, given the property here) With

Topband: Parallel Beverages

Is there a rule of thumb on how close (or far apart) parallel beverage antennas need to be? For example, if one wanted to run two single wire beverages in opposing directions is there a space between limitation? Thanks! _ Topband Reflector Archives -

Re: Topband: inv. L

- Original Message - From: Mike Furrey To: Art Snapper , 160 Sent: Mon, 17 Oct 2016 12:32:20 -0400 (EDT) Subject: Re: Topband: inv. L Hi Art,Yes, I have done that and am doing that. I use tall trees as supports and the 160

Re: Topband: inv. L

This comment applies only to a counterpoise which is a good to excellent ground radial field for 160, and resonant L's. It does not apply to L's over FCP's or elevated radials resonant on 160. To make a double L work over the aforementioned good to excellent 160 meter ground radials, feed the two

Re: Topband: BOG - Selecting the Optimum Length

Gents Thanks for your very quick replies, a lot via private emails – you guys are great and this 160M JN really appreciates it. I didn’t realize the Lloyd’s BOG was a few inches above the ground, which makes a difference. Mine will be on the ground (with staples at points to make sure it stays

Re: Topband: inv. L

Hi Art,Yes, I have done that and am doing that. I use tall trees as supports and the 160 inverted L goes up one side of the tree then bent over horizontally to another tree over yonder. From the same feed point, the 80 meter section goes up the other side of the same tree and the top actually

Re: Topband: BOG - Selecting the Optimum Length

Mark, The BOG here is 190 feet. It works very well and is quite directional. As a result of my experience so far, I'm thinking of a second one for the other directions. 73 Kip W6SZN -Original Message- From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of

Re: Topband: BOG - Selecting the Optimum Length

Typing on my iPhone from the woods now. I am testing a JK BevFlex 4 deployed as a bog now. Early stages. I think the optimum length will be determined by the local earth characteristics. Started by measuring a wire dipole resonance on the ground to determine the shortening factor from earth

Re: Topband: BOG - Selecting the Optimum Length

Just to be clear, my original 200 foot BOG was a success – much quieter on RX than the vertical ! In my particular environment, based on my particular soil conditions, I was not seeing a significant directional characteristic on 160m, but the 200 foot BOG still outperformed the vertical and

Re: Topband: inv. L

Yes Art, a relay on both will stop interaction between the antennas also it will help prevent noise being induced into any RX antenna. 73 Clive GM3POI -Original Message- From: Topband [mailto:topband-boun...@contesting.com] On Behalf Of Art Snapper Sent: 17 October 2016 15:17 To: 160

Re: Topband: BOG - Selecting the Optimum Length

Based upon N9LB’s comments, I just emailed Bruce and told him to hold my order for a KB-1. I have just enough room for 200 ft for a BOG. Extending it to 250, 290 feet etc is NOT an option for me. From my reading, I understood that 200 feet was not exact, but I didn’t expect it to be 250 to

Topband: inv. L

I was considering adding a second vertical element to my 160 inverted L. This one would be roughly a quarter wave tall for use on 80. I tried modelling in Eznec, but wasn't comfortable with the results. I may have screwed it up. Has anyone tried it for real? Is it a big compromise on either

Re: Topband: BOG - Selecting the Optimum Length

I have been asked how I arrived at the 290 foot BOG length. My original 200 foot BOG had a good F/B on 80m but showed almost no directivity on 160m, so this indicated to me that the BOG needed to be longer to improve the 160m performance with my particular soil conditions and environment. A