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Reviews Categories | Antennas: HF: Yagi, Quad, Rotary dipole, LPDA | OptiBeam OBLY 14-4 (14 el LogYagi 17-15-12-10m) Help


Reviews Summary for OptiBeam OBLY 14-4 (14 el LogYagi 17-15-12-10m)
OptiBeam OBLY 14-4 (14 el LogYagi 17-15-12-10m) Reviews: 1 Average rating: 5.0/5 MSRP: $1390
Description: The OBLY14-4 is a Log Yagi, not a logarithmic periodic antenna.
This antenna is the bigger one of two different models für the bands 17, 15, 12 and 10m, designed to serve hams who prefer to have a separate 20m monoband Yagi.
It consists of 13 driven elements, which are 180 degrees out of phase between each other, and a parasitic director which mainly acts on the 24 up to 28 MHZ range.
In contrary to a logP the 13 driven elements do not follow a mathematical logarithm, this counts for their percentage difference in length as well as for their distance between each other, i.e. every single element is tuned for maximum performance, based on an iterative process.
Due to the big active region of the antenna per band (capture area) the practical performance can be compared to at least four individual optimized three element monoband Yagis.
But while monoband Yagis are somewhat peaky (not stable) regarding gain and pattern accross the desired frequency range and do not show a really flat SWR the OBLY14-4 shows absolutely solid gain and a very high f/b ratio across all four bands with a very low SWR.
Product is in production.
More info: http://www.optibeam.de
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You can write your own review of the OptiBeam OBLY 14-4 (14 el LogYagi 17-15-12-10m).

OZ1HNE Rating: 5/5 Nov 30, 2017 06:37 Send this review to a friend
Great performer  Time owned: 3 to 6 months
I have been using this OptiBeam OBLY14-4 for about 6 month and every time a pleasure for me to be QRV. I took my time with assembly this LogYagi, but due to very well described "how to do" manual with good Pictures, it was straight forward. All predrilled and preassembled parts was all very well marked, fits 100% and "plug and play". SWR on all four bands very low and excellent F/B !!! My choise for this OBLY14-4 was to have a separate monoband yagi for 20m and here I decided a OptiBeam OB4-20OWA. Very nice working pair on the 5 bands and looks great in the air. Always a pleasure to deal with OptiBeam (Tom) and his always excellent support.
 


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