Home |
Search |
Today's Posts |
#1
![]() |
|||
|
|||
![]()
I'm thinking of buying a used Hustler 6BTV vertical ( 80 thru 10
coverage) and was wondering about how many radials I'd need and how long they should be ? If I do get it, I'd be ground mounting the vertical and planting the radials about 1 - 2 inches deep in soil that's mainly clay. Thanks in advance. 73 Gary |
#2
![]() |
|||
|
|||
![]() "Gary" wrote in message ... I'm thinking of buying a used Hustler 6BTV vertical ( 80 thru 10 coverage) and was wondering about how many radials I'd need and how long they should be ? If I do get it, I'd be ground mounting the vertical and planting the radials about 1 - 2 inches deep in soil that's mainly clay. Thanks in advance. 73 Gary You might want to think about hardware cloth - - half inch screen dipped in zinc - - virtually one continuous sheet, solderable and resistant to weather and moisture. It comes in a 36" width, and I bought about 100 ft of it for my ground-mounted 6-band Butternut. The results have been excellent. People use cars and trailers for their counterpoise - - but this makes a much bigger one, with a lot more capacitance to ground. You can then sod over it or put in plastic sheeting and pebbles - - whatever you like. The only thing you need to settle is to get your sprinklers arranged ahead of time so you don't have to trench through under the hardware cloth. 73, Chuck W6PKP |
#3
![]() |
|||
|
|||
![]()
Gary,
The general 'generic' answer is as many as you can stand to put in, and as long as you can make them. Usually, the length is a 1/4 wave (or sort of close) for the lowest frequency of use. Don't have that much room? Then make them as long as possible. The more you put down the 'better' it'll be. That's where the 'as many as you can stand' comes in. At some point you'll be ready to quit, so quit... 'Doc PS - The 'text book' answer? Not really, but probably the average one. |
#4
![]() |
|||
|
|||
![]()
On Wed, 29 Jun 2005 18:27:54 -0700, "Chuck Olson"
wrote: "Gary" wrote in message .. . I'm thinking of buying a used Hustler 6BTV vertical ( 80 thru 10 coverage) and was wondering about how many radials I'd need and how long they should be ? If I do get it, I'd be ground mounting the vertical and planting the radials about 1 - 2 inches deep in soil that's mainly clay. Thanks in advance. 73 Gary You might want to think about hardware cloth - - half inch screen dipped in zinc - - virtually one continuous sheet, solderable and resistant to weather and moisture. It comes in a 36" width, and I bought about 100 ft of it for my ground-mounted 6-band Butternut. The results have been excellent. People use cars and trailers for their counterpoise - - but this makes a much bigger one, with a lot more capacitance to ground. You can then sod over it or put in plastic sheeting and pebbles - - whatever you like. The only thing you need to settle is to get your sprinklers arranged ahead of time so you don't have to trench through under the hardware cloth. 73, Chuck W6PKP Ok, thanks Chuck ... 73 Gary K8IQ |
#5
![]() |
|||
|
|||
![]()
On Thu, 30 Jun 2005 03:37:48 GMT, 'Doc wrote:
Gary, The general 'generic' answer is as many as you can stand to put in, and as long as you can make them. Usually, the length is a 1/4 wave (or sort of close) for the lowest frequency of use. Don't have that much room? Then make them as long as possible. The more you put down the 'better' it'll be. That's where the 'as many as you can stand' comes in. At some point you'll be ready to quit, so quit... 'Doc PS - The 'text book' answer? Not really, but probably the average one. Thanks Doc ! .... 73 Gary K8IQ |
#6
![]() |
|||
|
|||
![]()
On Thu, 30 Jun 2005 14:24:52 GMT, Jim Higgins wrote:
On Wed, 29 Jun 2005 21:02:02 -0400, in , Gary wrote: I'm thinking of buying a used Hustler 6BTV vertical ( 80 thru 10 coverage) and was wondering about how many radials I'd need and how long they should be ? If I do get it, I'd be ground mounting the vertical and planting the radials about 1 - 2 inches deep in soil that's mainly clay. 5BTV here, ground mounted. I found that 4 radials cut for 40M and buried as you paln to do gave a marked improvement on all bands. More and longer if you can. You'll need to readjust the antenna for best SWR after installing radials. Thanks for the info Jim. 73 Gary |
#7
![]() |
|||
|
|||
![]()
Here is an additional question.
I have to mount my 40/80 vertical in a place where it can be hidden by trees, which means against the back fence in my yard. I can only put radials to cover 180 degrees. I assume my signal will radiate best in that direction. What kind of radiation will I get toward the side of the antenna without the radials? Mark, KJ7BS |
#8
![]() |
|||
|
|||
![]()
RF
"Mark" wrote in message news:Cs0xe.14415$ro.8260@fed1read02... Here is an additional question. I have to mount my 40/80 vertical in a place where it can be hidden by trees, which means against the back fence in my yard. I can only put radials to cover 180 degrees. I assume my signal will radiate best in that direction. What kind of radiation will I get toward the side of the antenna without the radials? Mark, KJ7BS |
#9
![]() |
|||
|
|||
![]()
Mark,
This month's edition of QEX (July/Aug. 2005) has an article addressing your question with a simulation matching your question exactly. Bottom line: put as many radials as long as possible in your yard and don't worry about it. The simulation with 60 1/4 wavelength radials in a 180 degree arc only resulted in a 1.67dB difference in signal strengths from the radial direction to the no radial direction. 73, Larry, W0QE Mark wrote: Here is an additional question. I have to mount my 40/80 vertical in a place where it can be hidden by trees, which means against the back fence in my yard. I can only put radials to cover 180 degrees. I assume my signal will radiate best in that direction. What kind of radiation will I get toward the side of the antenna without the radials? Mark, KJ7BS |
#10
![]() |
|||
|
|||
![]()
Mark,
Good question! There will be ~some~ gain/loss of signal in various directions. Probably won't be much gain or loss, just depends on 'other' things (how near the fence, fence made of wood/metal, and other mysterious things). Wouldn't worry too much about it, and if it really bothers you, sneak a radial or two under the fence for a ways. Hide it well and don't get caught running stuff in your neighbor's yard! 'Doc |
Reply |
Thread Tools | Search this Thread |
Display Modes | |
|
|
![]() |
||||
Thread | Forum | |||
Inverted ground plane antenna: compared with normal GP and low dipole. | Antenna | |||
Resonant and Non-resonant Radials | Antenna | |||
QST Article: An Easy to Build, Dual-Band Collinear Antenna | Antenna | |||
HF Vertical design(s) | Antenna | |||
Poor vertical performance on metal sheet roof - comments? | Antenna |