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| To: | "[email protected]" <[email protected]> |
|---|---|
| Subject: | Re: LF: Ferrite broadband (LF-MF) antenna? |
| From: | Daniele Tincani <[email protected]> |
| Date: | Sat, 23 Jun 2012 19:07:09 +0100 (BST) |
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Hi all, many thanks to all who have been so kind to give me interesting advices like the ones below from Johan and Chris. Some of these circuits I already knew when I built my single-turn air-cored loop (at that time I opted for the M0AYF amplifier, because of its simplicity together with good performance). Now I'm planning to try to build a wideband multi-turn ferrite-cored active antenna, hopefully covering also LF. Do the same amplifiers suit for both kinds of loop (single-turn air-cored and multi-turn ferrite-cored)? 73 Daniele IZ5WWB Da: Chris Trask <[email protected]> A: [email protected]; [email protected] Inviato: Sabato 23 Giugno 2012 17:53 Oggetto: Re: LF: Ferrite broadband (LF-MF) antenna? > > > so what I would appreciate some suggestions about > > is the required low-impedance amplifier, similar to those used in > > air-core broadband loops, if it does make sense of course. Any ideas? > > > Hi Daniele, > >you may get some inspiration from LZ1AQ's loop amplifier design. > > http://www.lz1aq.signacor.com/docs/wsml/wideband-active-sm-loop-antenna.htm > This amplifier provides better performance than either the Wellbrook or Pixel commercial products: http://www.home.earthlink.net/~christrask/Paper009.html Chris Trask N7ZWY / WDX3HLB Senior Member IEEE http://www.home.earthlink.net/~christrask/ |
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