TT: I also read somewhere in the long-ago that if you planted iron filings, you could grow a batch of 130-foot towers! Wish I would have remembered this earlier in the planting season. 73 de Gene Sma
No, iron filings only grow to be Ironwood Trees. Great for hanging wire antennas but a bear to install a yagi into. What you need is Beanstalk seeds. Tall, straight, climbable and as high as you want
For those with aluminium towers, the magic stuff is aluminium sulfate. XYL uses it in the garden. It must be slow acting. Hasn't changed tower height yet. However, the temp change from the dead of wi
May be I'm a bit o_ff t_opic, but rising to the top of a shunt fed element with the fed wire and connecting there we obtain a folded unipole. The ratio between the radiator diameter and the fed wire
To: <towertalk@contesting.com> Guy I have buried lots of copper around here but I have never gotten a crop from it. I think there is a guy on here that claims to grow aluminum though. Can't get that
To: <towertalk@contesting.com> Guy I have buried lots of copper around here but I have never gotten a crop from it. I think there is a guy on here that claims to grow aluminum though. Can't get that
This is my ignorant question for today -- with only an antenna analyzer, how can I determine the resonant frequency of my tower? I plan to attach a first-attempt at shunt feed at about the 30-foot le
Pete, Find a copy of May, 1975 Ham Radio magazine and check out the article titled "How to Design Shunt-feed Systems for Grounded Vertical Radiators" by John True, W4OQ. I do not think there has ever
I'm interested in this too, so will jump in now. My main question now is: I have a C31XR at 72 ft - The elements are -not- grounded. Thus I assume much less (or none?) capacitance hat effect. I there
Pete, You can not *easily* find the resonant frequency of your grounded tower. You could measure it by using making a clamp-on transformer to fit around the tower, but the thing would need a large co
<< This is my ignorant question for today -- with only an antenna analyzer, how can I determine the resonant frequency of my tower? I plan to attach a first-attempt at shunt feed at about the 30-foot
Hi Pete. One time I dropped a wire from the top of the 80' tower, about 1.5' away from the tower. I grounded the bottom end of the wire to the base of the tower. About 3' from the bottom I put in a s
N4KG comments inserted below. There will be LESS capacitance than if the elements were grounded. There is still the loading effect of the BOOM which I assume is electrically connected to the tower. A
Bob, Do you have any clues as to where this issues may be obtained? I have checked the commercial sources I could think of without success. I would glad to purchase the issue or copying costs from an
I modeled that with the following assumption: that I would ground the 20 meter ref and dir (only) to the boom which is grounded to the mast and then to the tower . This places the voltage peak out at
Kevin I accessed the URL and tried printing the info but parts of it didn't print. It appears that the formatting doesn't fit the usual 8.5 x 11 paper. Any ideas as to what I should to to get it to p