Many thanks, gents, for the responses. The intended operation would include domestic and DX work, but not to "set the world on fire." The op has a modest station, and I believe he will only be running in the 100-200 Watt class.
The other intention is to use the 43 ft vertical on all bands from 160-10, so that's why I thought adding the horizontal wire and switching it in would be the solution. But I especially wish to thank Joe, W4TV, for the 2 fine articles that I think provide the best practical solution. My friend is a fairly new ham, so I can help him with building the matching network, even supplying some of the parts. Thank you all for your assistance. I will now send him the applicable info. 73 and Best Wishes for the Holidays, Fred W2AAB On Tue, Dec 7, 2021 at 11:02 AM Artek Manuals <[email protected]> wrote: > The first question to ask is what is the operating goal for 160. > > 1) Local net or rag chew with his buddies.? In that case use the > existing vertical assuming the AATU can match it is enough . Might have > to a add lump loading coil at base to get it the point AATU can deal > with it . Generally this is a low impedance solution and likely a good > open frame style relay with 10-20 amp contacts area will be fine > > 2) Casual worked all states and occasional EU DX especially from NE USA > . I worked a fair amount of DX years ago using only a 33ft Butternut > vertical and a KW which for all practical purposes is a simple base > loaded vertical > > 3) Is high power involved or is this a barefoot operation? > > 4) If he really wants to be heard ( and be able to switch the neighbors > touch lamps on and off at 25 wpm ..chuckle) then switched in top loading > wires and 1500W amp is the reality. OR move to the county and put up > some real antennas. > > Dave > > NR1DX > > On 12/7/2021 10:29 AM, FRED BELGHAUS wrote: > > Gentlemen: > > > > I am trying to assist a friend from my local radio club in his efforts to > > get his station on 160. He has a 43 foot vertical with 60 ground mounted > > radials, and an AATU at the base. He sends DC on the coax to operate the > > AATU. > > > > I would think that it might be possible to add a horizontal wire at the > > top, and switch in the > > additional length to convert the vertical into an inverted L for 160, but > > the specifics of how best to do this are not clear to me. I imagine a > > vacuum relay would be the best method, but where should it be located, > and > > so on. > > > > Rather than trying a number of possible things that might work (but not > > very well), I am asking the experts on this list to provide the best > > method, with specific instructions as to how to accomplish this, or > > provide > > a reasonable alternative method that would produce successful results on > > 160. > > > > I can furnish my friend's email for direct contact with him. > > > > Many thanks in advance for your assistance. > > > > 73, > > > > Fred W2AAB > > _________________ > > Searchable Archives: http://www.contesting.com/_topband - Topband > > Reflector > > -- > Dave [email protected] www.ArtekManuals.com > > > -- > This email has been checked for viruses by Avast antivirus software. > https://www.avast.com/antivirus > > _________________ > Searchable Archives: http://www.contesting.com/_topband - Topband > Reflector > _________________ Searchable Archives: http://www.contesting.com/_topband - Topband Reflector
