Return to KLUBNL.PL main page
| To: | [email protected] |
|---|---|
| Subject: | Re: LF: vertical/loop |
| From: | "Rik Strobbe" <[email protected]> |
| Date: | Mon, 18 Nov 2002 10:06:47 +0100 |
| In-reply-to: | <000c01c28cd7$d8dcc700$69e8fc3e@l8p8y6> |
| Reply-to: | [email protected] |
| Sender: | <[email protected]> |
Hi Mal,The facts are being distorted because of local environmental issues instead of comparing the two antennas on LF where both systems are small physically compared to the frequency. Only those with sufficient unobstructed space are in a position to test one against the other for a true accessment. Under perfect conditions nor the vertical nor the loop would have any losses. At low take-off angles the vertical would have a 3dB gain over the loop, at heigher angles the loop can be significantly better than the vertical. But unfortunately these "perfect conditions" do not exist, one just can try to get close. So whatever is taken as the definition of "sufficient unobstructed space" and "for a true accessment", it is subject to interpretation. In the days of Napoleon the definition for 1 meter was given as : "The distance between the 2 gold plug in a certain platina-iridium bar the was kept somewhere in Paris (at 0 degrees C)." (but meanwhile there is a more scientific definition) In analogy the definition of "sufficient unobstructed space" could be : "A certain property in northern England, sized several acres and tree free for antenna testing" With a smile, 73, Rik ON7YD |
| <Prev in Thread] | Current Thread | [Next in Thread> |
|---|---|---|
| ||
| Previous by Date: | LF: Re: Re: Calibrating LF Current Meters, Hugh Burnham |
|---|---|
| Next by Date: | Re: LF: RULWZ, Ed Lesnichy |
| Previous by Thread: | Re: LF: vertical/loop, Alexander S. Yurkov |
| Next by Thread: | LF: 73Khz Transatlantic., Laurie Mayhead |
| Indexes: | [Date] [Thread] [Top] [All Lists] |