@DENMONKEY Im using the G3TXQ design with 16g insulated wire. I have also made the steve webb design previously that i think you are refering to, but found that hard going. Your frame will easily convert to the Steve hunt G3TXQ design. Send me PM if you need help ;-)
@mrdidot Hi :-) My cobwebb is now up at 28ft and is beating the G5 all over rx and tx sometimes by a large margin and sometimes only an s point or so "but much less noise".
I think the cobwebb is a great little antenna, I will definately will keep one here.. My new project is the Hexbeam and a I have a 20m monoband yagi to finish too.. I like to experiment with homebrew projects
The G5RV has nulls and lobes which increase in number, gain and loss and decrease in width as you get higher in frequency. If you get a station in a null on the G5RV it'll be weaker than the Cobwebb. Conversely if you get a station in a lobe on a G5RV then it will be the same or stronger than the Cobwebb. This is why as we got lower in frequency there was less of a difference as the lobes on the G5RV are less in number and wider.
@conorturton yes kind of like a dipole has nulls too, but G5RV quite a noisy antenna and needs atu. The things I think should be kept in mind are... 1 the cobwebb is supposed to be a compromise antenna and is only 8 ft square. 2 it was mounted very low which wouldnt helped it in the test. 3 it is resonant on 5 bands. 4 its easy to get higher than a G5RV and 5 it doesnt have that ugly feeder swinging in the middle of my garden lol.. Many thanks for your comments.. 73's Sparkie
Don't tell people what antenna you are using when using A/B tests - at least not until you have all the signal reports. By doing so, you invalidated the results. It has been shown that people's prejudices will influence signal reports. In fact, people reported poorer reception 80% of the time when the G5RV was named specifically (vs a dipole) and no significant difference when the test was single blind.
Hi. I have enjoyed looking at your QRZ page and video's you also have on youtube. So nice to see other people making things like me. Yes the cobwebb is a great antenna for its size and so easy to make. "I have also made a folding cobwebb like you". Mine was made to use portable ,but as it worked so well made another for home QTH as shown on video. I have another video on here showing its construction. Wishing you a good xmas my friend. 73's 2e0vov
wow . tough crowd. Some people expect a lot from a simple video comparison.
I also made a cobwebb antenna and posted my build. I wish I had applied more time to testing it and working with it.
Sometimes I enjoy the build more than the actually using of the end result.
I still have the frame in the yard so may revisit it based on your results.
Can you give me some info on the wire used and what site or formula you used to choose the cross over points ?
DENMONKEY 6 days ago
@DENMONKEY Im using the G3TXQ design with 16g insulated wire. I have also made the steve webb design previously that i think you are refering to, but found that hard going. Your frame will easily convert to the Steve hunt G3TXQ design. Send me PM if you need help ;-)
mk1tina 4 days ago
@mrdidot Hi :-) My cobwebb is now up at 28ft and is beating the G5 all over rx and tx sometimes by a large margin and sometimes only an s point or so "but much less noise".
I think the cobwebb is a great little antenna, I will definately will keep one here.. My new project is the Hexbeam and a I have a 20m monoband yagi to finish too.. I like to experiment with homebrew projects
Nice to see you have simular results
73's
mk1tina 1 month ago
Hmmm. Not quite a like for like.
The G5RV has nulls and lobes which increase in number, gain and loss and decrease in width as you get higher in frequency. If you get a station in a null on the G5RV it'll be weaker than the Cobwebb. Conversely if you get a station in a lobe on a G5RV then it will be the same or stronger than the Cobwebb. This is why as we got lower in frequency there was less of a difference as the lobes on the G5RV are less in number and wider.
conorturton 1 month ago
@conorturton yes kind of like a dipole has nulls too, but G5RV quite a noisy antenna and needs atu. The things I think should be kept in mind are... 1 the cobwebb is supposed to be a compromise antenna and is only 8 ft square. 2 it was mounted very low which wouldnt helped it in the test. 3 it is resonant on 5 bands. 4 its easy to get higher than a G5RV and 5 it doesnt have that ugly feeder swinging in the middle of my garden lol.. Many thanks for your comments.. 73's Sparkie
mk1tina 1 month ago
Don't tell people what antenna you are using when using A/B tests - at least not until you have all the signal reports. By doing so, you invalidated the results. It has been shown that people's prejudices will influence signal reports. In fact, people reported poorer reception 80% of the time when the G5RV was named specifically (vs a dipole) and no significant difference when the test was single blind.
markwhitis 1 month ago
@markwhitis
LOL. Im not selling anything, just switching antenna's, so they can take it how they choose
73's
mk1tina 1 month ago
Hi Mark great video
my cobbweb is 2 s points better then te GPA 404
the cobbweb at 4 meter high and the GPA404 12 meters high
Look at qrz.com for my new junkbox of the cobbweb
73 PE1JXI
TheHajac 2 months ago
Hi. I have enjoyed looking at your QRZ page and video's you also have on youtube. So nice to see other people making things like me. Yes the cobwebb is a great antenna for its size and so easy to make. "I have also made a folding cobwebb like you". Mine was made to use portable ,but as it worked so well made another for home QTH as shown on video. I have another video on here showing its construction. Wishing you a good xmas my friend. 73's 2e0vov
mk1tina 2 months ago