The benefit I see with an LPDA is the fact that you can operate multiple
frequencies, simultaneously, like ALE. Likewise, it may be useful as a
listening antenna if you have multiple receivers like a Flex 6700, that lets
you see up to eight spectrum slices.
Short of that, you sacrifice gain and F/B, not to mention they don't play well
around other antennas. Plus, they challenge the front end of a receiver because
of their broadband design. The TH-11 or F12 C-31XR will blow it away. For lower
freqs, consider a 2 ele 40 m yagi.
Steppir antennas are great, too!
73,
Ed
> On Feb 15, 2017, at 06:19, Gary Johnson <gwj@wb9jps.com> wrote:
>
> Another promising LPDA design is the Band-Optimized LPDA by G0KSC of
> InnovAntennas. There’s an interview with him in the Jan/Feb NCJ. The article
> is fairly enlightening. The upshot is that it’s not just a conventional
> ultrawideband design, and he ends up with decent gain and F/B for the bands
> of interest. They sell a version made in the UK and, for better or worse, a
> USA version made by… MFJ… using HyGain hardware.
>
> http://www.innovantennas.com/antennas-a-accesories/on-line-shop/view/productdetails/virtuemart_product_id/509/virtuemart_category_id/37.html
>
> Gary NA6O
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