![]() |
Nutty Antenna Idea -- Complete with Rhetorical Questions
I have two multiband trap verticals They are not exactly the same, but
close. Obviously they're intended to be mounted vertically above a ground. What happens if I mount them horizontally, base-to base? If I feed one with coax as designed, would it see the other one as a counterpoise? Could I remove any base matching components and feed them both with a 1:1 balun, in effect duplicating the function of a horizontal wire trap dipole? I'm really impressed with the lower noise of a horizontal antenna. Screw the directionality drawbacks of a horizontal! I can hear more stations. I am having great fun with HF. My 10 meter copper pipe dipole is laying on the roof with one element extended using a short clip lead and some RG-6 TV coax. Tonight, my Kenwood TS-120 reached out from San Diego for a QSO with New Zealand on 20 meters, my first contact outside this hemisphere. Neat. "Sal" (really KD6VKW) |
Nutty Antenna Idea -- Complete with Rhetorical Questions
"Sal M. Onella" wrote in message ... I have two multiband trap verticals They are not exactly the same, but close. Obviously they're intended to be mounted vertically above a ground. What happens if I mount them horizontally, base-to base? If I feed one with coax as designed, would it see the other one as a counterpoise? Could I remove any base matching components and feed them both with a 1:1 balun, in effect duplicating the function of a horizontal wire trap dipole? I'm really impressed with the lower noise of a horizontal antenna. Screw the directionality drawbacks of a horizontal! I can hear more stations. I am having great fun with HF. My 10 meter copper pipe dipole is laying on the roof with one element extended using a short clip lead and some RG-6 TV coax. Tonight, my Kenwood TS-120 reached out from San Diego for a QSO with New Zealand on 20 meters, my first contact outside this hemisphere. Neat. "Sal" (really KD6VKW) What you would have is a trap dipole, a fairly common antenna. With out seeing the antennas I am not sure how the twoo different types would intereact but its worth a try. You will probably need a tuner. |
Nutty Antenna Idea -- Complete with Rhetorical Questions
On Sat, 24 Mar 2007 06:11:45 -0400, "Jimmie D"
wrote: "Sal M. Onella" wrote in message ... I have two multiband trap verticals They are not exactly the same, but close. Obviously they're intended to be mounted vertically above a ground. What happens if I mount them horizontally, base-to base? If I feed one with coax as designed, would it see the other one as a counterpoise? Could I remove any base matching components and feed them both with a 1:1 balun, in effect duplicating the function of a horizontal wire trap dipole? I'm really impressed with the lower noise of a horizontal antenna. Screw the directionality drawbacks of a horizontal! I can hear more stations. I am having great fun with HF. My 10 meter copper pipe dipole is laying on the roof with one element extended using a short clip lead and some RG-6 TV coax. Tonight, my Kenwood TS-120 reached out from San Diego for a QSO with New Zealand on 20 meters, my first contact outside this hemisphere. Neat. "Sal" (really KD6VKW) What you would have is a trap dipole, a fairly common antenna. With out seeing the antennas I am not sure how the twoo different types would intereact but its worth a try. You will probably need a tuner. If both were the same, I think he would be better off, but it should turn into a rotatable dipole similar to a multiband beam, but without the directors and reflectors. I see there is no reason it shouldn't work once he gets them tuned. Buck -- 73 for now Buck, N4PGW www.lumpuckeroo.com |
Nutty Antenna Idea -- Complete with Rhetorical Questions
Buck wrote:
If both were the same, I think he would be better off, but it should turn into a rotatable dipole similar to a multiband beam, but without the directors and reflectors. I see there is no reason it shouldn't work once he gets them tuned. How much would it weigh? -- 73, Cecil http://www.w5dxp.com |
Nutty Antenna Idea -- Complete with Rhetorical Questions
"Cecil Moore" wrote in message ... Buck wrote: If both were the same, I think he would be better off, but it should turn into a rotatable dipole similar to a multiband beam, but without the directors and reflectors. I see there is no reason it shouldn't work once he gets them tuned. How much would it weigh? -- 73, Cecil http://www.w5dxp.com Yeah I thought about that too after my inital post. It would be a bear to make a rotateable dipole using this if its anything like my old trap vertical. |
Nutty Antenna Idea -- Complete with Rhetorical Questions
I have two multiband trap verticals They are not exactly the same, but close. Obviously they're intended to be mounted vertically above a ground. What happens if I mount them horizontally, base-to base? If I feed one with ....[snip].... I've done it with pairs of identical "hamsticks" (not multiband, but quick-disconnects made it relatively easy to change bands), coax fed, and mounted (horizontally, pointed fore and aft, of course!-) about two feet above the cab of my pickup. It made a GREAT NVIS HF antenna! -- --Myron A. Calhoun; W0PBV; 2001 Dunbar Road; Manhattan, KS 66502-3907 Five boxes preserve our freedoms: soap, ballot, witness, jury, and cartridge NRA Life Member & Certified Instructor for Rifle, Pistol, & Home Firearm Safety Also Certified Instructor for the Kansas Concealed-Carry Handgun (CCH) license |
Nutty Antenna Idea -- Complete with Rhetorical Questions
"Jimmie D" wrote in message ... "Cecil Moore" wrote in message ... Buck wrote: If both were the same, I think he would be better off, but it should turn into a rotatable dipole similar to a multiband beam, but without the directors and reflectors. I see there is no reason it shouldn't work once he gets them tuned. How much would it weigh? -- 73, Cecil http://www.w5dxp.com Yeah I thought about that too after my inital post. It would be a bear to make a rotateable dipole using this if its anything like my old trap vertical. I hadn't bargained on rotating it, although that's not out of the question. I think those verticals are about 20 pounds each, so it would be a project. I will weigh them tomorrow. I do have a rotator thrust bearing that I once used with a monster VHF TV antenna. The Hustler four band (10, 15, 20 , 40) is 35 feet tall. The other antenna is a five-band, but I don't have the specs here at hand. It's presumably the same, unless they got 80 with some folding tricks, in which case I don't know how tall it would be. Depending on where I would put a rotating 70-foot horizontal antenna, I'm sure I could either prune my neighbor's tree or make contact with the power company, via their overhead lines. Did I mention I am on a city street with a 100 x 100 lot? Hm-m-m -- better not rotate. |
Nutty Antenna Idea -- Complete with Rhetorical Questions
wrote in message ... I have two multiband trap verticals They are not exactly the same, but close. Obviously they're intended to be mounted vertically above a ground. What happens if I mount them horizontally, base-to base? If I feed one with ....[snip].... I've done it with pairs of identical "hamsticks" (not multiband, but quick-disconnects made it relatively easy to change bands), coax fed, and mounted (horizontally, pointed fore and aft, of course!-) about two feet above the cab of my pickup. It made a GREAT NVIS HF antenna! -- --Myron A. Calhoun; W0PBV; Thanks. I don't own any of them, yet, but it sounds like a possibility. I'm probably going to want DX, though, so NVIS isn't something that I'm seeking. If I'm horizontal, I'll want some elevation. "Sal" |
Nutty Antenna Idea -- Complete with Rhetorical Questions
"Sal M. Onella" wrote in message ... "Jimmie D" wrote in message ... "Cecil Moore" wrote in message ... Buck wrote: If both were the same, I think he would be better off, but it should turn into a rotatable dipole similar to a multiband beam, but without the directors and reflectors. I see there is no reason it shouldn't work once he gets them tuned. How much would it weigh? -- 73, Cecil http://www.w5dxp.com Yeah I thought about that too after my inital post. It would be a bear to make a rotateable dipole using this if its anything like my old trap vertical. I hadn't bargained on rotating it, although that's not out of the question. I think those verticals are about 20 pounds each, so it would be a project. I will weigh them tomorrow. I do have a rotator thrust bearing that I once used with a monster VHF TV antenna. The Hustler four band (10, 15, 20 , 40) is 35 feet tall. The other antenna is a five-band, but I don't have the specs here at hand. It's presumably the same, unless they got 80 with some folding tricks, in which case I don't know how tall it would be. Depending on where I would put a rotating 70-foot horizontal antenna, I'm sure I could either prune my neighbor's tree or make contact with the power company, via their overhead lines. Did I mention I am on a city street with a 100 x 100 lot? Hm-m-m -- better not rotate. Make sure your antenna is OK before you try this a lot of those old Hustlers are good for scrap. |
Nutty Antenna Idea -- Complete with Rhetorical Questions
"Sal M. Onella" wrote in
: I have two multiband trap verticals They are not exactly the same, but close. Obviously they're intended to be mounted vertically above a ground. What happens if I mount them horizontally, base-to base? If I feed one with coax as designed, would it see the other one as a counterpoise? Could I remove any base matching components and feed them both with a 1:1 balun, in effect duplicating the function of a horizontal wire trap dipole? Will water drain from the traps in their new configuration? Owen |
Nutty Antenna Idea -- Complete with Rhetorical Questions
On Sat, 24 Mar 2007 14:05:28 GMT, Cecil Moore
wrote: Buck wrote: If both were the same, I think he would be better off, but it should turn into a rotatable dipole similar to a multiband beam, but without the directors and reflectors. I see there is no reason it shouldn't work once he gets them tuned. How much would it weigh? That part hadn't occurred to me. Come to think of it, I don't think they were designed to withstand horizontal positioning, but then I don't know the antennas. Anyway, good luck in the antenna. Maybe a vertical dipole? -- 73 for now Buck, N4PGW www.lumpuckeroo.com |
Nutty Antenna Idea -- Complete with Rhetorical Questions
I've done it with pairs of identical "hamsticks" ....
two feet above the cab of my pickup. It made a GREAT NVIS HF antenna! Thanks. I don't own any of them, yet, but it sounds like a possibility. I'm probably going to want DX, though, so NVIS isn't something that I'm seeking. If I'm horizontal, I'll want some elevation. The NVIS was not caused by the hamsticks, themselves, but by their being VERY LOW! (2 feet above my pickup cab is only 8-9 feet high) I'm not in any way claiming hamsticks are the "best" antenna, but if you elevated a dipole made of them, I'm sure they would not act like cloud-burners anymore. -- --Myron A. Calhoun; W0PBV; 2001 Dunbar Road; Manhattan, KS 66502-3907 Five boxes preserve our freedoms: soap, ballot, witness, jury, and cartridge NRA Life Member & Certified Instructor for Rifle, Pistol, & Home Firearm Safety Also Certified Instructor for the Kansas Concealed-Carry Handgun (CCH) license |
Nutty Antenna Idea -- Complete with Rhetorical Questions
"Owen Duffy" wrote in message ... "Sal M. Onella" wrote in : I have two multiband trap verticals They are not exactly the same, but close. Obviously they're intended to be mounted vertically above a ground. What happens if I mount them horizontally, base-to base? If I feed one with coax as designed, would it see the other one as a counterpoise? Could I remove any base matching components and feed them both with a 1:1 balun, in effect duplicating the function of a horizontal wire trap dipole? Will water drain from the traps in their new configuration? Owen Probably not, unless I do something special, like custom drain holes. Being in Southern California, we have a six-month virtually rain-free summer coming up, so I suppose it cold be a fair-weather project. (What do you bet I forget to take it down in October?) |
Nutty Antenna Idea -- Complete with Rhetorical Questions
"Jimmie D" wrote in message news:46060d00$0$1379 Make sure your antenna is OK before you try this a lot of those old Hustlers are good for scrap. Good idea. |
Nutty Antenna Idea -- Complete with Rhetorical Questions
"Buck" wrote in message ... That part hadn't occurred to me. Come to think of it, I don't think they were designed to withstand horizontal positioning, but then I don't know the antennas. Anyway, good luck in the antenna. Maybe a vertical dipole? withstand horizontal positioning If I do this, I will have the thing laying on the roof, at or near the peak, so support won't be a consideration. (The far end of each unit could stick out and be self-supporting.) Having it slide down the roof is a bigger worry. vertical dipole Ahah! I started out with a 10m vertical dipole as my first-ever HF antenna, last month. (It has since morphed into an OCF horizontal dipole that I've stretched all the way to 40m with a homebrew pi-network tuner I acquired at the swap meet.). To the point, two opposing trap verticals as a single dipole would be a 70 foot vertical structure and is not within my capabilities. (I would love to try it, though.) "Sal" (KD6VKW) |
All times are GMT +1. The time now is 12:23 AM. |
Powered by vBulletin® Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
RadioBanter.com