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#1
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End Fed wires
I`m playing around with wire antennas at present and amazed that a 60ft wire
from a tree to my house, run down the back of the house and connected to a balun as it goes through the wall in coax seems to be ahead of my G5RV(full length) and a home made 40Mtr wire dipole for SWL. My question is! The tree is at the bottom of the garden(almost central) if I connect another length of wire to the end at the tree and bring it back to the other side of the house it would be in a `V` formation(horizontal) rather than a straight line and about 150ft total length, do you think it would be much of an improvement over the straight 60ft or would I start to run into any problems like overload etc? I use table top receivers that have att`s etc. Why wouldn`t a 102ft G5RV work better than the 60ft straight I wonder, they both face roughly the same direction and are both to the rear of the house facing fields????? The G5RV is about the same height as the 60ft wire (22ft) Thanks for any advice Dave C |
#2
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Dave:
What frequencies are you evaluating the antennas at? The G5RV and the dipole will/may be optimized for different frequancies than your random wire. Also, don't be surprised at the performance of a random wire for general HF listening. There is a reason they are so popular. -- Brian Denley http://home.comcast.net/~b.denley/index.html "David Chilvers" wrote in message ... I`m playing around with wire antennas at present and amazed that a 60ft wire from a tree to my house, run down the back of the house and connected to a balun as it goes through the wall in coax seems to be ahead of my G5RV(full length) and a home made 40Mtr wire dipole for SWL. My question is! The tree is at the bottom of the garden(almost central) if I connect another length of wire to the end at the tree and bring it back to the other side of the house it would be in a `V` formation(horizontal) rather than a straight line and about 150ft total length, do you think it would be much of an improvement over the straight 60ft or would I start to run into any problems like overload etc? I use table top receivers that have att`s etc. Why wouldn`t a 102ft G5RV work better than the 60ft straight I wonder, they both face roughly the same direction and are both to the rear of the house facing fields????? The G5RV is about the same height as the 60ft wire (22ft) Thanks for any advice Dave C |
#3
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I use a 135 foot U shaped wire here and it works great. As a rule the more wire
the better especially for lower frequencies -- 73 and Best of DX Shawn Axelrod Visit the AMANDX DX site with info for the new or experienced listener: http://www.angelfire.com/mb/amandx/index.html REMEMBER ON A CLEAR DAY YOU CAN HEAR FOREVER David Chilvers wrote: I`m playing around with wire antennas at present and amazed that a 60ft wire from a tree to my house, run down the back of the house and connected to a balun as it goes through the wall in coax seems to be ahead of my G5RV(full length) and a home made 40Mtr wire dipole for SWL. My question is! The tree is at the bottom of the garden(almost central) if I connect another length of wire to the end at the tree and bring it back to the other side of the house it would be in a `V` formation(horizontal) rather than a straight line and about 150ft total length, do you think it would be much of an improvement over the straight 60ft or would I start to run into any problems like overload etc? I use table top receivers that have att`s etc. Why wouldn`t a 102ft G5RV work better than the 60ft straight I wonder, they both face roughly the same direction and are both to the rear of the house facing fields????? The G5RV is about the same height as the 60ft wire (22ft) Thanks for any advice Dave C |
#4
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DC,
Basically what you have made is an Inverted "L" Low Noise Antenna using a Matching Transformer. The Inverted "L" is the best antenna shape for adaptation to the Low Noise Antenna Design by John Doty. Using the 'right' Matching Transformer in this design can create a very quite and broadband antenna good for 500kHz through 30MHz an gives equal or better performance than most of the common ready made or home brewed antennas - IMHO. Low Noise Antenna (External) written by John Doty GoTo= http://www.anarc.org/naswa/badx/ante...e_antenna.html From the Association of North American Radio Clubs (ANARC) WebSite and the Rec.Radio.ShortWave (NG) WebPage ~ RHF .. .. = = = "David Chilvers" = = = wrote in message ... I`m playing around with wire antennas at present and amazed that a 60ft wire from a tree to my house, run down the back of the house and connected to a balun as it goes through the wall in coax seems to be ahead of my G5RV(full length) and a home made 40Mtr wire dipole for SWL. My question is! The tree is at the bottom of the garden(almost central) if I connect another length of wire to the end at the tree and bring it back to the other side of the house it would be in a `V` formation(horizontal) rather than a straight line and about 150ft total length, do you think it would be much of an improvement over the straight 60ft or would I start to run into any problems like overload etc? I use table top receivers that have att`s etc. Why wouldn`t a 102ft G5RV work better than the 60ft straight I wonder, they both face roughly the same direction and are both to the rear of the house facing fields????? The G5RV is about the same height as the 60ft wire (22ft) Thanks for any advice Dave C |
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