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#1
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wire thickness
I have a rather short dipole i can't 'move' the ends appart any more.
currently using 18g stranded just wondering if i went to a larger wire ga would there be any appreciable gains?? tnx |
#2
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"ml" wrote in message ... I have a rather short dipole i can't 'move' the ends appart any more. currently using 18g stranded just wondering if i went to a larger wire ga would there be any appreciable gains?? The diameter of the wire will make almost no differance. If the antenna is up high enough you may be able to drop the ends some to gain more electrical length. |
#3
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ml wrote:
I have a rather short dipole i can't 'move' the ends appart any more. currently using 18g stranded just wondering if i went to a larger wire ga would there be any appreciable gains?? tnx Thicker wire yields wider band width but does not affect wavelength. Dave WD9BDZ |
#4
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Increasing the wire diameter will not make slightest detectable difference
in performance. But if for some reason you think an increase in length will be beneficial, as it usually is for short antennas, then increase length by extending and bending the ends by about 90 degrees in either the horizontal or vertical directions. You can extend one or both of the ends down to insulated ground level. You can extend the ends sideways for as long as you can manage it without any noticeable difference in performance from the whole length being in a straight line. Perhaps the most important characteristic of the antenna, if it is to remain balanced, is that the feedline should be attached approximately at the centre of the overall length. But it's not critical. There is no doubt that increasing the overall length of a dipole, by whatever means, up to the overall length of 1/3-wavelengths at the lowest frequency of interest, will improve performance. Particularly in transmitting, multiband applications. ---- Reg, G4FGQ |
#5
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"ml" wrote in message ... I have a rather short dipole i can't 'move' the ends appart any more. currently using 18g stranded just wondering if i went to a larger wire ga would there be any appreciable gains?? tnx Perhaps a little wider bandwidth, would probably require a lot more diameter to achieve much. Not an area of expertise for me, but I have read that bending dipoles is not always a bad thing. You might try adding wire perpendicular to your dipole ends. Also an inverted vee might allow some additional length along the 45 degree downward angle, I believe it might also help with impedance matching (or so I've read). Harold KD5SAK |
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