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#1
March 1st 05, 02:44 AM
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How can I measure or observe my hf antenna's take off angle?
Using a Hustler 5-BTV ground mounted with 72 radials. I have heard about
antenna modeling but is there any way to do a real world take off angle measurement??? -- Charlie Ham Radio - AD5TH www.ad5th.com Live Blues Music www.492acousticblues.com |
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#2
March 1st 05, 03:23 AM
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"Charlie" wrote
Using a Hustler 5-BTV ground mounted with 72 radials. I have heard about antenna modeling but is there any way to do a real world take off angle measurement??? It will take a lot of thrust, that 5-BTV might require 2 propane tanks ;-) Be sure to disconnect the radials first! Sorry, couldn't resist that. Jack |
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#3
March 1st 05, 03:27 AM
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Charlie wrote:
Using a Hustler 5-BTV ground mounted with 72 radials. I have heard about antenna modeling but is there any way to do a real world take off angle measurement??? Sure, just rent a helicopter and make field strength measurements. -- 73, Cecil http://www.qsl.net/w5dxp ----== Posted via Newsfeeds.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 100,000 Newsgroups ---= East/West-Coast Server Farms - Total Privacy via Encryption =--- |
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#4
March 1st 05, 01:03 PM
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wind a small RX i.e.: a field strength coil and LED indicator, or buy one of
them cheap 'bug detectors', stick on a gas filled WX balloon, get a hand held radio or mobile phone, and place a RX next to the radio Mic, put your radio on VOX and key from out side, by talking into the hand held, drag the balloon round with long a string observing the bug detector as a led field strength meter by viewing the LED barographs twinkling light, with a binocular. Easier at night. |
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#5
March 1st 05, 02:10 PM
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Thanks for all those helpful remarks..I have the LED ready along with the
balloon. I really liked the helicopter idea....you guys are so helpful!! LOL!!! -- Charlie Ham Radio - AD5TH www.ad5th.com Live Blues Music www.492acousticblues.com wrote in message ... wind a small RX i.e.: a field strength coil and LED indicator, or buy one of them cheap 'bug detectors', stick on a gas filled WX balloon, get a hand held radio or mobile phone, and place a RX next to the radio Mic, put your radio on VOX and key from out side, by talking into the hand held, drag the balloon round with long a string observing the bug detector as a led field strength meter by viewing the LED barographs twinkling light, with a binocular. Easier at night. |
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#6
March 2nd 05, 04:35 AM
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Charlie............I read the posts with humor as well. Sounds
like you would like to do some serious field measurements. I will say that one year for field day two friends and myself put up a 4BTV, with 32 radials out. We got out so well with it we took the 40M dipole down. We worked quite a bit of DX as well, this was from a mountain top. I think too many people sell the verticles short...............and I will bow out at this point. 73, WB7FFI "Charlie" wrote in message ... Using a Hustler 5-BTV ground mounted with 72 radials. I have heard about antenna modeling but is there any way to do a real world take off angle measurement??? |
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#7
March 2nd 05, 04:56 PM
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Charlie wrote:
"Using a Hustler 5-BTV ground mounted with 72 radials. I have heard about antenna modeling but is there a way to do a real world take off angle measurement?" Make a small physical model. Then use a field strength meter without a helicopter. Best regards, Richard Harrison, KB5WZI |
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#8
March 3rd 05, 04:49 AM
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Hi John and thx for the reply. I too used to sell verticals short and I was
mystified why anyone would admit to having a "ground mounted" vertical of all kinds. But with a well built vertical and plenty of radials one can bust pileups in DX...I am so pleased with my 5-BTV. -- Charlie Ham Radio - AD5TH www.ad5th.com Live Blues Music www.492acousticblues.com "John Franklin" wrote in message ink.net... Charlie............I read the posts with humor as well. Sounds like you would like to do some serious field measurements. I will say that one year for field day two friends and myself put up a 4BTV, with 32 radials out. We got out so well with it we took the 40M dipole down. We worked quite a bit of DX as well, this was from a mountain top. I think too many people sell the verticles short...............and I will bow out at this point. 73, WB7FFI "Charlie" wrote in message ... Using a Hustler 5-BTV ground mounted with 72 radials. I have heard about antenna modeling but is there any way to do a real world take off angle measurement??? |
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#9
March 3rd 05, 04:51 AM
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Hi Richard thx for the reply but in thinking it over it would seem an
unlikely possibility that I could accurately model the 5-BTV with it's traps. Did I miss something there? -- Charlie Ham Radio - AD5TH www.ad5th.com Live Blues Music www.492acousticblues.com "Richard Harrison" wrote in message ... Charlie wrote: "Using a Hustler 5-BTV ground mounted with 72 radials. I have heard about antenna modeling but is there a way to do a real world take off angle measurement?" Make a small physical model. Then use a field strength meter without a helicopter. Best regards, Richard Harrison, KB5WZI |
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#10
March 3rd 05, 01:39 PM
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"Cecil Moore" Charlie wrote: Using a Hustler 5-BTV ground mounted with 72 radials. I have heard about antenna modeling but is there any way to do a real world take off angle measurement??? Sure, just rent a helicopter and make field strength measurements. ============================== What use would he make of take-off angle if he ever gets to know it. |
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