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#1
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Need help to optmise a older Hy-Gain antenna for 2M SSB
PLEASE, I need help.
If anyone can run the numbers, I have tried Quick Yagi with little success. I have a pair of the OLDER Hy-Gain 2m antenna's. There design was a 200ohm (I think) Hairpin match (to 50ohm) with the reflector and directors INSULATED from the boom. Current model for the last 10+ years is the elements are not insulated from the boom. I want to respace the elements, possilbing cutting down as it is easier than lenghting them, to get the best 1. Beamwith/pattern 2. FB 3. Gain. I am only going to use them on 2M SSB with a center freq of 144.250 Here are the measurments. 14' boom El Lgth Space D6 34.62500 32.25 D5 35.00000 26.75 D4 35.12500 25.75 D3 35.12500 28.25 D2 35.25000 22.25 D1 35.50000 12.75 Driven 32.75000 16.75 Ref 44.37500 1.75 Notes. Measured in Inches. Reflector is mounted 1.75 inch from end of boom, D6 is 1.5 inch from end of boom. All Elements are INSULATED on top of the boom. If needbe I can remove 1 director as the insulator need replacing. |
#2
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I want to respace the elements, possilbing cutting down as it is easier than lenghting them, to get the best 1. Beamwith/pattern 2. FB 3. Gain. I am only going to use them on 2M SSB with a center freq of 144.250 You have to design for one of teh above 3 items. It is not usaully possiable to have the best of all 3. In most areas there is not enough activity to worry about the RB or pattern. Just go for the gain. |
#3
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Check your email. While these guys talk a good story about wire
antennas, they really don't have much to do with gain antennas, and absolutely nothing to do with optimizing. With a couple exceptions, and you know who you are, Ian, etc. Tom K0TAR W2RAC wrote: PLEASE, I need help. |
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