Use 73 material only. Binocular double core with 2/6t for 50Ohms feeder. Install it as far as possible from house and man-made noise sources. Chokes on both feeder sides and low-noise high IMD preamp are needed. That will work well.
Good video James. It's nice to see videos where you don't always get the results you want to see or show, I've experienced similar. Keep at it, I'm sure you will get there. I love loops. I was testing a 40m loop 4ft off the ground at the weekend. I was super pleased at the results. Got a video coming out tomorrow night on my channel on it. 73, Colin
Hi Colin, as you rightly say I don't dress things up to look pretty on camera. If it goes wrong then you see it! I really like your videos about the "Adjustawave" antenna. That's a great idea. Im following that with interest. I've also been debating trying a delta loop. Once the current restrictions are lifted, I'm thinking of going back to the camp site on the Welsh coast where I filmed the first 20m EFHW vertical video about a year ago. That should be awesome from that location! Will keep an eye out for your loop video tomorrow. 73.
Hi James, I found with the Loop on the Ground antenna that the signal and noise levels heard were very low. The noise floor of the antenna was well below the noise floor of my receiver. Once I fitted a low noise pre-amp at the loop terminals I could hear down to the noise floor of the antenna and the signal to noise performance was then better than my other antennas. Without the pre-amp it appeared exactly as you have found in the video. 73, Chris G4HYG
Hi Chris, I have wondered about trying the CCW loop antenna amplifier with it. Do you think that would be a good match? Could be a follow up video there! P.S. I've been thinking about trying one of your High Z antenna amplifiers on a vertical whip at the bottom of the garden, although verticals are generally considered noisier so I don't know if there would be any advantage to that in my case? I realise that I'm a tiny UA-cam channel & don't really have any advertising clout but would there be any kind of a discount/deal to be had? I know it's a cheeky request but if you don't ask you don't get!!! 73.
@@AmateurRadioUK Hi James, The Beverage Antenna Amplifier would match the Loop on the Ground perfectly. You could also try a Beverage antenna at your field site. It you want so that you can make more videos I could supply a Beverage Antenna Amplifier and a High Z Antenna Amplifier on a sale or return basis. Try them out with a video and if you want to keep it you can buy it or ship it back if you don't..73, Chris G4HYG
Interesting video, I tried a log antenna and had similar results so didn't use how ever I only used a normal 4 to 1 unun and I only used the pre amp on actual radio which did help, I currently run a end fed half wave 80 to 6m in a inverted U, I have wondered about about turning the efhw into a terminated end fed using a counterpoise and resistor, I have heard mixed comments on thus type of antenna. Great video cheers
I just tried 43 material and made a balun with it and it became an attenuator low down. I tested from 1 - 15 megs and from 1 to 3 it was pretty bad (tested on nano VNA)....for the rest of the way it was flat and OK. The number 73 was much better down low. I'm making a video soon of my experience of the LOG adventure. 73 de VK2AOE.
That is a very good point Steve. Theoretically the radiation patterns are mis-aligned by about 45 degrees. I've already filmed a follow up video to this where I WSPR test both antennas simultaneously. That video will go live on Saturday.
Use 73 material only. Binocular double core with 2/6t for 50Ohms feeder. Install it as far as possible from house and man-made noise sources. Chokes on both feeder sides and low-noise high IMD preamp are needed. That will work well.
Good video James. It's nice to see videos where you don't always get the results you want to see or show, I've experienced similar. Keep at it, I'm sure you will get there. I love loops. I was testing a 40m loop 4ft off the ground at the weekend. I was super pleased at the results. Got a video coming out tomorrow night on my channel on it. 73, Colin
Hi Colin, as you rightly say I don't dress things up to look pretty on camera. If it goes wrong then you see it!
I really like your videos about the "Adjustawave" antenna. That's a great idea. Im following that with interest.
I've also been debating trying a delta loop. Once the current restrictions are lifted, I'm thinking of going back to the camp site on the Welsh coast where I filmed the first 20m EFHW vertical video about a year ago. That should be awesome from that location!
Will keep an eye out for your loop video tomorrow.
73.
Hi James, I found with the Loop on the Ground antenna that the signal and noise levels heard were very low. The noise floor of the antenna was well below the noise floor of my receiver. Once I fitted a low noise pre-amp at the loop terminals I could hear down to the noise floor of the antenna and the signal to noise performance was then better than my other antennas. Without the pre-amp it appeared exactly as you have found in the video. 73, Chris G4HYG
Hi Chris, I have wondered about trying the CCW loop antenna amplifier with it. Do you think that would be a good match? Could be a follow up video there!
P.S. I've been thinking about trying one of your High Z antenna amplifiers on a vertical whip at the bottom of the garden, although verticals are generally considered noisier so I don't know if there would be any advantage to that in my case?
I realise that I'm a tiny UA-cam channel & don't really have any advertising clout but would there be any kind of a discount/deal to be had?
I know it's a cheeky request but if you don't ask you don't get!!!
73.
@@AmateurRadioUK Hi James, The Beverage Antenna Amplifier would match the Loop on the Ground perfectly. You could also try a Beverage antenna at your field site. It you want so that you can make more videos I could supply a Beverage Antenna Amplifier and a High Z Antenna Amplifier on a sale or return basis. Try them out with a video and if you want to keep it you can buy it or ship it back if you don't..73, Chris G4HYG
Awesome, thanks Chris. If I could possibly borrow them for a month or so, that would be fantastic. I've sent you an email.
Interesting video, I tried a log antenna and had similar results so didn't use how ever I only used a normal 4 to 1 unun and I only used the pre amp on actual radio which did help, I currently run a end fed half wave 80 to 6m in a inverted U, I have wondered about about turning the efhw into a terminated end fed using a counterpoise and resistor, I have heard mixed comments on thus type of antenna. Great video cheers
Could I use 43 material for the balun. The reason I ask is because I already have some of these.
Thanks
I just tried 43 material and made a balun with it and it became an attenuator low down. I tested from 1 - 15 megs and from 1 to 3 it was pretty bad (tested on nano VNA)....for the rest of the way it was flat and OK. The number 73 was much better down low. I'm making a video soon of my experience of the LOG adventure. 73 de VK2AOE.
Do both your antenna radiate in same direction i wonder? might need more signals to see more detail. 73
That is a very good point Steve. Theoretically the radiation patterns are mis-aligned by about 45 degrees.
I've already filmed a follow up video to this where I WSPR test both antennas simultaneously. That video will go live on Saturday.