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What are you disagreeing with? How much DX do you work with
your NVIS antenna? Do you really think the majority of hams are only interested in local communications on HF? Some are...Most work only the low bands...I know many hams who couldn't care less about dx. They only talk to other regional "good ole boys".... But saying that, comparing a G5RV at 50 ft, against a dipole at 7 ft, is fairly silly. The NVIS qualities are more due to height above ground per wavelength, than the length of the antenna. Overall, I think the idea of running low dipoles, or using ground screens, and pseudo "reflectors" etc, are generally a waste of time.. If I were working NVIS on 75m, I'd prefer a dipole at 50ft over one at 7 ft. It will have lower ground losses, and I'd be willing to bet the NVIS performance would be just as good as the low antenna. But, the medium range performance would be a good bit better. Also, you can work dx also...I've worked dx on 75m, using a dipole at 35 ft...It's no big deal really...Just finding the DX to talk to is more difficult. Also...NVIS antennas are not low noise, unless they are defective in some way...They may reduce the reception of far off lightning, if that static arrives at low angles.. A low dipole has great reception of noise... Straight up....A low to medium height dipole already has enough gain straight up. I don't really want to enhance it further...I also want to have decent performance on longer paths...Listen to all the BIG strappers on 75m...I bet very few are running real low dipoles with screens...Most will be running higher dipoles hung from towers, trees, etc... MK |
#2
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What are you disagreeing with? How much DX do you work with your NVIS antenna? Do you really think the majority of hams are only interested in local communications on HF? As you may have missed previously, my comments were directed from the standpoint of a 75M/40M operator. Personally, I don't consider a NVIS antenna a valid antenna above those bands. So, for the two bands I have in mind, Yes, I believe the majority of operators there are interested in local/intra-state communications. Ed |
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