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On Mar 15, 7:46 am, Art Unwin wrote:
On Mar 8, 11:21 am, (Richard Harrison) wrote: Art wrote: "---my antenna is a full wavelength which meets Maxwell`s requirements, it is just that the volume is small despite the wavelength." In 1949, I worked at the KPRC-KXYZ broadcast plant. Another operator there, J.L. Davis, W5LIT had a new 1949 Ford in which he installed a surplus ART-13 and a PE-103 dynamotor. For an antenna he wound wire turn by turn on a bamboo pole until it was resonant on a slice of the 75-meter band. When J.L. modulated, Q in the coil produced a tip corona on the first good peak and modulation became loud without a receiver. The 20th edition of the ARRL Antenna Book on page 16-13 says this about continuously loaded antennas: "The general approach has been to use a coil made from heavy wire (#14 or larger), with length-to-diameter ratios as high as 21. British experimeters have reported good results with 8-foot overall length on the 1.8- and 3.5 MHz bands. The idea of making the entire antenna out of one section of coil has been tried with some success." Art`s antenna containing a "full wavelength" of wire would likely feature a greater loss than J.L.`s 1/4-wave resonant coil from simply a greater length of wire while both have peactances balanced to zero. Art`s lower Q would probably kill the corona, increase the bandwidth, while losing the gain that a fullwave straight conductor enjoys. Cecil can probably report on results of continuously loaded mobile antennas versus a bug catcher loaded whip in the California shoot-outs. Best regards, Richard Harrison, KB5WZI Considering that it meets Maxwells requirements and is at least a wavelenght of a radiator my expectations are much higher than yours Typical of one with delusions of radiation grandeur... I suspect that the output will exceed that of a 160 M antenna which has a ground plane. How many people do you know that use elevated ground planes on 160m? This may or may not be a trick question. I also suspect that if I diddn't concentrated so much on small physical size it could easily be uprated to compete with a yagi! I suspect it would also be capable of browning the food, if said food was placed close to the device when high power was applied. But the last time I checked, food warmers are not known as very good radiators of RF. I would anticipate that in a couple of years the top band will have twice as many users that it has now. Because all of a sudden you show up using a sub par antenna? How would this effect the number of users of that band? Why would anyone modify their operating habits because you refuse to use an antenna that is halfway efficient? I am hoping also that its small size will allow for receiving abililities in line with the angle of incoming radiation via its manouvarability. Of course if all is already known about radio this would seem impossible Only to you I suspect... but in a few weeks I myself will have a few QSOs to see how it matches up to my expectations. Matches? This is the part of the system which is going to eat your lunch. Chortle... The archives show all the building instruction but it appears that readers have concentrated on nonsensical retorts without reading the content. I have no time to waste on sub par antenna designs. If an antenna is at least off one wavelength and is in equilibrium I see no reason why it should not beat existing antennas with ground plane losses How many people do you know that use elevated ground planes on 160m? This may or may not be a trick question. But even if one was to use an elevated ground plane, or even a ground mounted vertical, who are you to say if the system is lossy or not? I know of plenty of vertical systems on 160m which will whip your puny shoe box antenna like a long lost stepchild, regardless of the level of equilibrium noted. Whatever that means... regardless of its shape or size. Regardless of shape or size... yea right... Time will tell. Either way the experimental trail undertaken I have found to be very rewarding as many other amateurs have had when experimenting with antennas and who refuse to accept that all is known Art The only thing I "know" for sure is you have your head stuck so far up your whiny kazoo it has clouded all rational thought. As an example.. I disagree that all experiments on antennas should stop based on the proweress of your particular brain. You have consistently over estimate your abilities #1, define proweress... #2 define your abilities, and then we will all vote as to who has the greater level of proweress between the particular brains in question. Everyone is brain dead, except for prior Art. lol... BTW, I said I would wait for your grand test before I commented further, but seeing as you continue to spew your silly bafflegab, and also horses ass comments to anyone that dare question your silly crap, I retire my earlier stance. MK |
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