Re: Topband: [TowerTalk] 160 vertical advice

2018-02-12 Thread Wes Attaway (N5WA)
This is Wes agreeing with Wes re the "too much loss in the system". In an efficient system on 160 the SWR curve should not be so broad. Years ago I had an Inverted L configured like what you have, with the vertical wire going up about 65' spaced about 18" off the tower. The SWR was broad. I

Topband: 80 meter 4-Square verticals

2018-02-12 Thread terry burge
Hi Folks, I've decided to get serious and try to put up an 80 meter 4-Square around my 117' tower of Rohn 55. Getting into my place can be a VERY SERIOUS CHALLENGE to any tandem rig so that may make getting 40' long 3" and 2" irrigation tubing difficult to deliver. I've got new steel racks

Re: Topband: FCC authorizes 1KW wireless power transmission

2018-02-12 Thread Brian Pease
I agree about the pie.  I have done a bit of reading.  Their experimental station will use a 50kW broadcast xmtr to (they say) generate a Zenneck surface vertical EM wave with little radiation loss into the sky by using a special "probe".  Zenneck waves are real and have been demonstrated in a

Re: Topband: 80 meter 4-Square verticals

2018-02-12 Thread Mike Smith VE9AA
Terry, I think Bill KH7XS just went through this exercise. That said, my (Comtek) 80m 4-square is made 100% from wire and hung in the woods as inverted L's. Raised radials. Seems to work. Electrons don't (really) care if you use $1000 worth of aluminum or $100 of used wire.

Re: Topband: 80 meter 4-Square verticals

2018-02-12 Thread AB2E Darrell
Mike, Is your 80m 4square like the ON4UN with the L pointing towards each other. I was reading his book the other night. Great stuff. 73 Darrell AB2E From: Topband on behalf of Mike Smith VE9AA Sent: Monday,

Re: Topband: 160 vertical advice

2018-02-12 Thread Don Kirk
Hi Bill, As Wes already mentioned, your SWR bandwidth is suspicious as is your minimum SWR. Nevertheless your signal this morning was pretty much on par with the strongest signals I have ever heard from KH6 land on 160 meters. When I worked you this morning signals were not that great, but

Re: Topband: Fwd: Re: Belize-VK/ZL possibilities

2018-02-12 Thread Grant Saviers
One issue is probably the orientation of the Belize beach vs path to VK/ZL. A vertical on the beach within .7 wavelengths of the tide line has pronounced gain seaward. That gain is at the expense of the land side pattern. For an antenna on a pier the pattern doesn't get symmetrical until a

Topband: FCC authorizes 1KW wireless power transmission

2018-02-12 Thread Jim Thomson
Date: Tue, 6 Feb 2018 14:16:15 -0500 (EST) From: donov...@starpower.net To: topband Subject: Topband: FCC authorizes 1KW wireless power transmission experimental station WJ2XGB on 160 meter band

Topband: Receiving Antenna Metrics With Examples Webinar

2018-02-12 Thread Ken Claerbout
The World Wide Radio Operators Foundation (WWROF) is pleased to present the following Webinar. Date - Tuesday, February 13 Time - 19:00 UTC Registration - https://register.gotowebinar.com/register/6004189296300531458 Jukka OH6LI shares a presentation about receiving antennas. Gain and

Re: Topband: 160 top loaded vertical question (Kees Nijdam)

2018-02-12 Thread W7RH
Kees, A 50 ft high vertical with two top hat loading wires each equal length about 67ft will work great with a good ground field. It can easily be fed with a 4-1 toroidal transformer 50-12.5 Ohms. Absolute minimum radial field would be 30 1/4 wave radials adding as many possible short

Re: Topband: Sod staples

2018-02-12 Thread Brian Pease
I used the same source twice and was very pleased. Brian W1IR On 2/12/2018 9:15 AM, cqtestk4xs--- via Topband wrote: After getting a four square for 80 radial system buried and now starting the 160 system I wanted to pass along a good cheap source of yard staples. A company called sandbaggy

Re: Topband: Adding a parasitic reflector to a vertical

2018-02-12 Thread W0MU Mike Fatchett
I was going to try to phase 2 80m verticals but just could not find the room.  You get endfire and broadside. I assume you have to put down the same radial field for a Parasitic element as a driven one?  Maybe I am wrong here. On 2/9/2018 3:38 PM, Joel Harrison wrote: Interesting question

Re: Topband: Adding a parasitic reflector to a vertical

2018-02-12 Thread Joel Harrison
Interesting question Mike! Possibly, however my focus was to achieve maximum gain with minimal effort. This direction allowed me to accomplish that objective. Don't know if anyone has documented experience in doing what you pose. I would certainly be interested in reading the work anyone

Re: Topband: Adding a parasitic reflector to a vertical

2018-02-12 Thread Joel Harrison
I believe you could get by with less radials with a phased array. In that case all of the elements are "driven" so the current distribution in each element will be forced. With a parasitic element proper current distribution and thus gain is impacted by ground resistance so a good, effective

Topband: 160 vertical advice

2018-02-12 Thread cqtestk4xs--- via Topband
First, I want to say thank you to all who responded to my post about a top loaded vertical for 160. The antenna I wound up with was quite different than the one I proposed. Basically, it is about 132 feet of wire. The top "bent" part (65 feet) is carried by a piece of thin Phillystran

Re: Topband: Beverage transformer and testing

2018-02-12 Thread Richard (Rick) Karlquist
On 2/5/2018 8:23 PM, Grant Saviers wrote: I also use wire wrap wire.  The Kynar insulation is designed to not cut thru against a sharp corner wire wrap post, no need to insulate ferrite.  I use 26 or 30 gauge.  Multi colors are fun and available in small spools on ebay in both gauges.  No

Topband: Conditions 0100Z to 0200Z 8 Feb 18

2018-02-12 Thread k8gg
Hi All, Since Roger, G3YRO, suggested that Wednesday night was a good time for activity, and I happened to be at a radio, I turned on 160 and found some good strong signals: G3YRO 0102Z, OK1CW 0132Z, HG2DX 0136Z, and HA6FQ 0144Z. Nothing further east was QSOed although I could hear a whisper of

Topband: Sod staples

2018-02-12 Thread cqtestk4xs--- via Topband
After getting a four square for 80 radial system buried and now starting the 160 system I wanted to pass along a good cheap source of yard staples. A company called sandbaggy has been my source. You can find their stuff on ebay. Cost is around $45/1000 for 6 inch staples. Best part is they

Topband: de n7dd

2018-02-12 Thread Larry via Topband
hi all, can anyone tell me if there is common grey line between Kuwait and Tucson, Arizona? especially where SR/SS match. if so what dates? thanks, larry n7dd _ Topband Reflector Archives - http://www.contesting.com/_topband

Re: Topband: Fwd: Re: Belize-VK/ZL possibilities

2018-02-12 Thread Greg - ZL3IX
My point was as follows. Apart from the launch point in V3, the entire path is over salt water. This means that any ground reflections will happen with the minimum loss. Even with several hops, this element of path attenuation will therefore be minimal. My main observation is that QSO

Topband: SOD STAPLE SOURCE

2018-02-12 Thread cqtestk4xs--- via Topband
As requested, one of the members wanted the link to the ebay site 1000 staples for $46, free ship. https://www.ebay.com/itm/Sandbaggy-1000-6-Landscape-Staples-SOD-Staples-Garden-Stakes-Weed-Barrier-Pins/120895612145?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649 _

Topband: FW: 80 meter 4-Square verticals

2018-02-12 Thread Mike Smith VE9AA
Hi Darrel, No, it's a mish mash of oddly shapen all wire inverted L's in the woods. The ends do not point at each other at all. Viewed from above, the entire mish mash of wires and 2 raised radials/per would look almost like a perfect square. Mike, Coreen & Corey Keswick

Re: Topband: Fwd: Re: Belize-VK/ZL possibilities

2018-02-12 Thread W0MU Mike Fatchett
If you are on one of the Islands such as Ambergris or cawker you would have plenty of Salt going west, if you can get a beach location on the East.  Same for some area of Placentia.  In February I did not think the noise was that bad from V3M/V31MU. We were also set up to work the USA and VE