HFU HF Underground
Technical Topics => Equipment => Topic started by: ChrisSmolinski on January 30, 2019, 1239 UTC
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My LoG is now under 3.5" of snow, and seems to be working fine.
I wasn't sure about the LoG at first, but I'm really happy with the performance of this antenna on the lower bands. This is a larger LoG, about 350 ft total perimeter. I am using it right now to listen to some of the pirate beacons on the 2 and 4 MHz bands, and it is working extremely well.
I also have a traditional 50 ft LoG which OTOH I am not very thrilled with so far. I need to spend some more time using it on the higher bands, when propagation permits. Which might be in a few years.
I'm now considering building a larger one, perhaps in the 800 to 1000 foot range. Time to check out eBay for some bulk wire deals.
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Would the 50 foot LoG perform decently in the 20-30 MHz range (including 10 and 11 meters?) or by "higher bands" do you mean 10-15 MHz that range?
I know you have a 11/10 meter dipole but I still think you should get a vertical for 11 meters :D Also yes to the 1000 foot LoG.
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No, the small LoG doesn't really work well at all, either 20m or 11m.
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I wonder if a small amp would benefit the shorter bog? The only diff I can see is the total rf delivered by the short loop compared to the big one. Kinda like how a larger bev should deliver more rf than a shortened one for the same freq.
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I found about 120-130 feet of wire is good for a LoG when listening to the funny band.
An amp might not be a bad idea. I've found you have to bring the RF gain on the rx up a bit to hear clearly w/ most LoG's.
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Yep, on ground/in ground antennas are always low noise, but also low desired signal level too. Also consider a preselector, those can help wring the last bits of rf our of the system as well as offer protection from off freq signals.
http://www.bobsamerica.com/preselectDesignNotes.html
http://www.bobsamerica.com/preselect-6.html