G5RV on 10 Meters
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| Feb 10th 2014, 01:15 | |
larryt1939Total Topics: 0 Total Posts: 0 |
My recently installed G5RV works great on all bands except 10 meters. On 10 it has a 3-1+ SWR. Is this something obvious? Any help will be appreciated. |
| Feb 15th 2014, 03:14 | |
ka7niqTotal Topics: 0 Total Posts: 0 |
The G5RV is not the best 10 meter antenna, even when the SWR is lower. |
| Feb 15th 2014, 09:32 | |
W1VTSuper Moderator Total Topics: 0 Total Posts: 0 |
This analysis predicts an SWR of 5 and an efficiency under 10% http://www.karinya.net/g3txq/g5rv/ As a rough rule of thumb, you are doing really well with an efficiency over 80% 25% might be considered typical for multiband antenna. At 10% you may want to consider other options. Zack Lau W1VT ARRL Senior Lab Engineer |
| Feb 20th 2014, 22:50 | |
k4nucTotal Topics: 0 Total Posts: 0 |
Hmmm, I must of been lucky. My g5rv lite works great with a relatively (tuned) flat swr on 10, 20, 40, and I even tuned 6 meters. I cannot get 12, 15, or 17 to tune at all. It's in an inverted v on the roof with a 1 to 1 bulun attached. |
| Feb 21st 2014, 13:52 | |
W1VTSuper Moderator Total Topics: 0 Total Posts: 0 |
Yes, with a bit of luck or trial and error with the feedline length you can usually get it to tune on 10 meters. But, this doesn't fix the feedline loss issue--it will still be high. When conditions are really good this may not matter--like this past weekend in which I was able to work 250 stations on 10 meters running 100 watts to a half wave dipole in the ARRL DX CW contest. I even got called by a couple of QRP stations! But, if you can put up another antenna, a 10M dipole would work significantly better than a G5RV on 10 meters. Zack W1VT ARRL Senior Lab Engineer |
| Mar 17th 2014, 21:58 | |
W5BUBH80Total Topics: 0 Total Posts: 0 |
I have the same problem with the G5RV on 10 meters, However I have made a lot of contacts and get good signal reports. W5BUB |
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