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Author Topic: LoG Antenna Update  (Read 290 times)

Offline ChrisSmolinski

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LoG Antenna Update
« on: January 30, 2019, 1239 UTC »
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.
Chris Smolinski
Westminster, MD
eQSLs appreciated! csmolinski@blackcatsystems.com
NRD 545 / netSDR / AFE822x / AirSpy HF+ / KiwiSDR / 670 ft horizontal loop / 500 ft northeast beverage / 270 ft west-south-west beverage / 300 ft south beverage / 43m / 20m / 10m  dipoles / Crossed Parallel Loop

Offline R4002

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Re: LoG Antenna Update
« Reply #1 on: January 30, 2019, 1918 UTC »
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. 
U.S. East Coast, various HF/VHF/UHF radios/scanners/receivers

Offline ChrisSmolinski

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Re: LoG Antenna Update
« Reply #2 on: January 30, 2019, 2111 UTC »
No, the small LoG doesn't really work well at all, either 20m or 11m.
Chris Smolinski
Westminster, MD
eQSLs appreciated! csmolinski@blackcatsystems.com
NRD 545 / netSDR / AFE822x / AirSpy HF+ / KiwiSDR / 670 ft horizontal loop / 500 ft northeast beverage / 270 ft west-south-west beverage / 300 ft south beverage / 43m / 20m / 10m  dipoles / Crossed Parallel Loop

Offline Josh

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Re: LoG Antenna Update
« Reply #3 on: January 30, 2019, 2240 UTC »
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.
Conveniently located near Vincennes Indiana.

Offline Pigmeat

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Re: LoG Antenna Update
« Reply #4 on: January 31, 2019, 1442 UTC »
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.

Offline Josh

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Re: LoG Antenna Update
« Reply #5 on: January 31, 2019, 2144 UTC »
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
Conveniently located near Vincennes Indiana.