Return to KLUBNL.PL main page
| To: | [email protected] |
|---|---|
| Subject: | Re: LF: Results of optimising an active antenna |
| From: | "Roelof Bakker" <[email protected]> |
| Date: | Wed, 02 Dec 2009 17:12:12 -0000 |
| In-reply-to: | <38A51B74B884D74083D7950AD0DD85E828AAF4@File-Server-HST.hst.e-technik.tu-darmstadt.de> |
| References: | <38A51B74B884D74083D7950AD0DD85E828AAF4@File-Server-HST.hst.e-technik.tu-darmstadt.de> |
| Reply-to: | [email protected] |
| Sender: | [email protected] |
| User-agent: | Opera Mail/9.63 (Win32) |
Hello Stefan, Thank you for your detailed description.I have carried out the same tests some five years ago and arrived also at a length of 30 cm. The wire can be replaced by a 30 x 40 mm piece of copper clad PCB for the same results. Using SMD parts, which have less capacitive coupling due to the small size, a further size reduction is possible. Your findings that raising the antenna higher than 4 m is correct as the signal to noise ratio will not improve, so nothing will be gained. However, this depends on the surroundings. At the border of a lake, I found an height of 2 m sufficient for weak signal work at LF. Best regards, Roelof Bakker, pa0rdt |
| Previous by Date: | Re: LF: Results of optimising an active antenna, hajo . brandt . dj1zb |
|---|---|
| Next by Date: | Re: LF: Results of optimising an active antenna, mal hamilton |
| Previous by Thread: | Re: LF: Results of optimising an active antenna, hajo . brandt . dj1zb |
| Next by Thread: | Re: LF: Results of optimising an active antenna, Paul-Henrik |
| Indexes: | [Date] [Thread] [Top] [All Lists] |