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Hey Antenna Gurus !
I want to screw around and build some homemade antennas.
Will this single quad loop work throughout the band? Says it's 1.8 DB gain over dipole. I was going to build a dipole, but looked rather boring. http://signalengineering.com/ultimate/cubical_quad.html Expert opinions are welcomed. Thanks. Vinnie S. |
Hey Antenna Gurus !
On May 1, 8:43 pm, Vinnie S. wrote:
I want to screw around and build some homemade antennas. Will this single quad loop work throughout the band? Says it's 1.8 DB gain over dipole. I was going to build a dipole, but looked rather boring. http://signalengineering.com/ultimate/cubical_quad.html Expert opinions are welcomed. Thanks. First off... don't claim to be an expert... If you're talking about covering the CB band... don't think you'd have any problem with coverage. www.telstar-electronics.com |
Hey Antenna Gurus !
On Tue, 01 May 2007 21:43:01 -0400, Vinnie S.
wrote: +++I want to screw around and build some homemade antennas. +++ +++Will this single quad loop work throughout the band? Says it's 1.8 DB gain over +++dipole. I was going to build a dipole, but looked rather boring. +++ +++ +++http://signalengineering.com/ultimate/cubical_quad.html +++ +++Expert opinions are welcomed. Thanks. +++ +++Vinnie S. *************** Vinnie By band how much outside teh normal 40 channel band are you expecting to operate? I used a single loop on 6 meters and got about 600KHz bandwidth with good results. A single loop is rather easy to build and rather cheap. There are more pronounced nulls off the quad loop compared to a dipole. Also th efeed impedance is about 100 Ohms so a simple quarter wave section of 75 Ohm cable will be all that is needed to match the antenna. james |
Hey Antenna Gurus !
On Tue, 01 May 2007 21:43:01 -0400, Vinnie S.
wrote: I want to screw around and build some homemade antennas. Will this single quad loop work throughout the band? Says it's 1.8 DB gain over dipole. I was going to build a dipole, but looked rather boring. http://signalengineering.com/ultimate/cubical_quad.html Expert opinions are welcomed. Thanks. Vinnie S. Add a reflector and become single directional with more gain. |
Hey Antenna Gurus !
By band how much outside teh normal 40 channel band are you expecting to operate? I used a single loop on 6 meters and got about 600KHz bandwidth with good results. A single loop is rather easy to build and rather cheap. There are more pronounced nulls off the quad loop compared to a dipole. Also th efeed impedance is about 100 Ohms so a simple quarter wave section of 75 Ohm cable will be all that is needed to match the antenna. james Just 11 meters. I have a Hustler 5BTV for my ham rig. I just wanted to try it because it looked cool. I am confused about the 75 ohm cable you mention. Vinnie S. |
Hey Antenna Gurus !
On Wed, 02 May 2007 17:30:22 -0400, wrote:
On Tue, 01 May 2007 21:43:01 -0400, Vinnie S. wrote: I want to screw around and build some homemade antennas. Will this single quad loop work throughout the band? Says it's 1.8 DB gain over dipole. I was going to build a dipole, but looked rather boring. http://signalengineering.com/ultimate/cubical_quad.html Expert opinions are welcomed. Thanks. Vinnie S. Add a reflector and become single directional with more gain. That will be part II. Vinnie S. |
Hey Antenna Gurus !
On 2 May 2007 04:17:25 -0700, Telspam Electronics
wrote in .com: On May 1, 8:43 pm, Vinnie S. wrote: I want to screw around and build some homemade antennas. Will this single quad loop work throughout the band? Says it's 1.8 DB gain over dipole. I was going to build a dipole, but looked rather boring. http://signalengineering.com/ultimate/cubical_quad.html Expert opinions are welcomed. Thanks. First off... don't claim to be an expert... At one time you did. What changed your mind, Brian? If you're talking about covering the CB band... don't think you'd have any problem with coverage. As long as the ground plane is at least nine square feet? |
Hey Antenna Gurus !
On May 4, 2:53 am, Frank Gilliland
wrote: As long as the ground plane is at least nine square feet? Polly wanna a cracker? www.telstar-electronics.com |
Hey Antenna Gurus !
On Thu, 03 May 2007 20:02:52 -0400, Vinnie S.
wrote: +++ +++ +++By band how much outside teh normal 40 channel band are you expecting +++to operate? +++ +++I used a single loop on 6 meters and got about 600KHz bandwidth with +++good results. A single loop is rather easy to build and rather cheap. +++There are more pronounced nulls off the quad loop compared to a +++dipole. Also th efeed impedance is about 100 Ohms so a simple quarter +++wave section of 75 Ohm cable will be all that is needed to match the +++antenna. +++ +++james +++ +++ +++Just 11 meters. I have a Hustler 5BTV for my ham rig. I just wanted to try it +++because it looked cool. I am confused about the 75 ohm cable you mention. +++ +++Vinnie S. *********** Tomatch an antenna that is around 100 Ohms impedance needs only what is called a quarter wave matching stub. It is simply an electrical quarterwave length of 75 Ohm coax from the feedpoint to the 50Ohm transmission line. Simple and works well. james |
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