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 Log Periodic 
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Joined: Thu Dec 11, 2014 3:28 pm
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Location: Nuneaton IO98FM
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Post Log Periodic
Evening all, I am about to start fitting and using a Create LogPer 50-23cms as a compromise to lessen the impact of multiple antennas at the home QTH.
Are there any users that can offer advice on height/positioning/feeder/dividing signals etc or any other advice "except" don't do it :yahoo: Much appreciated in advance.
John G7ANQ


Mon Jun 22, 2020 7:02 pm
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 Log Periodic 
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Joined: Sat Jul 21, 2007 9:30 am
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Location: Nr Gloucester / Tewkesbury
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Post Re: Log Periodic
I've got a bit of a soft spot for Log Periodics having used them commercially.

Usual things: get it as high as possible, clear of obstructions, fed with the best coax you can. I think the gain figures are optimistic (10-12dBi), maybe on the higher bands, but it should work well. They are a very good compromise if you want a broad frequency range.


Wed Jun 24, 2020 7:26 am
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 Log Periodic 
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Joined: Fri Jul 20, 2007 1:02 pm
Posts: 15133
Location: IO83lb, Wrexham
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Post Re: Log Periodic
The gain figure is pretty well meaningless as it's going to be different across the spectrum.
There's probably only a couple of elements active on 6M.

There's an article on log periodics in this months Radcom.
Might be worth a read before spending.

Cheers

Tony

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50MHz and above from IO83lb


Wed Jun 24, 2020 3:12 pm
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 Log Periodic 
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Joined: Thu Dec 11, 2014 3:28 pm
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Location: Nuneaton IO98FM
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Post Re: Log Periodic
Thanks lads for the observations.
Fortunately I am aware of most of the shortcomings of LogPers but I have to make compromises from the home QTH as we don't have an over friendly council. Also now have a problem that we have a number of new houses that have "arrived" too close for comfort.
I now have to decide what to do with a largish collection of contest antennas that I have made over the years, sadly memories of distant dx are gone.
Thanks again John G7ANQ


Wed Jun 24, 2020 8:39 pm
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