To: rsgb_lf_group@blacksheep.org References: <001a01c61f79$e346a700$0600a8c0@router> Date: Sun, 22 Jan 2006 22:23:30 -0000 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 5.00.2615.200 X-MIMEOLE: Produced By Microsoft MimeOLE V5.00.2615.200 Subject: LF: Re: Tee- Ant. vs Loop ? Content-Type: text/html; charset=windows-1252 X-SA-Exim-Scanned: Yes Sender: owner-rsgb_lf_group@blacksheep.org Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rs_out_1@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false X-PN-SpamFiltered: by PlusNet MXCore (v2.00) Content-transfer-encoding: 8bit

Dear Uwe, LF Group,

The trade-off is that, although the bulky coil is eliminated, it is replaced with a bulky high-voltage, high current tuning capacitor. Also, much thicker antenna wire will be required to get reasonably low loss in the loop. I think if the antenna will be very close to a lot of trees, etc., the loop is worth considering because its losses are less sensitive to the surroundings, but a vertical is probably better in a reasonably "open" location.

Cheers, Jim Moritz

73 de M0BMU

----- Original Message -----

From: Uwe Wensauer

To: rsgb_lf_group@blacksheep.org

Sent: Sunday, January 22, 2006 5:32 PM

Subject: LF: Tee- Ant. vs Loop ?

To all ,

I would like to built a Tx antenne but with linited space I need at least a bulky 4 mh and variometer.

So I wonder if I could not use a loop antenna ( 20x 10m ) ? So I would not need such big coils ?

( high voltage vs. high current )

73, Uwe, DK1KQ