Topband: Topband Digest, Vol 90, Issue 13

[vu2bgs .]

Dear Eduardo

you will find the RFsim 99 a very useful program for the coil design and
also simulation of the filters etc
http://electroschematics.com/835/rfsim99-download/


hope cu on the bands

73
Kumar
VU2BGS

On Thu, Jun 17, 2010 at 12:30 AM, <topband-request at contesting.com> wrote:

> Send Topband mailing list submissions to
>        topband at contesting.com
>
> To subscribe or unsubscribe via the World Wide Web, visit
>        http://lists.contesting.com/mailman/listinfo/topband
> or, via email, send a message with subject or body 'help' to
>        topband-request at contesting.com
>
> You can reach the person managing the list at
>        topband-owner at contesting.com
>
> When replying, please edit your Subject line so it is more specific
> than "Re: Contents of Topband digest..."
>
>
> Today's Topics:
>
>   1. Re: 3 element array (Stein Roar Brobakken)
>   2. From CO8LY (Eduardo Somoano C)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Tue, 15 Jun 2010 23:03:15 +0200
> From: "Stein Roar Brobakken" <s-roabr at online.no>
> Subject: Re: Topband: 3 element array
> To: <k3lr at k3lr.com>, <topband at contesting.com>
> Message-ID: <000101cb0cce$2d5f55d0$881e0170$@no>
> Content-Type: text/plain;       charset="us-ascii"
>
> Hi Tim
> Thanks for input :)
>
> Let us see what we can do for 160 and 80m :)
> I would like to have more gain to USA and its good to get tips what others
> are doing in practice.
>
> I need to look up the ON4UN book again in our attic
>
> 73 LA6FJA
>
> -----Opprinnelig melding-----
> Fra: Tim Duffy K3LR [mailto:k3lr at k3lr.com]
> Sendt: 15. juni 2010 16:13
> Til: 'Stein Roar Brobakken'; topband at contesting.com
> Emne: RE: Topband: 3 element array
>
> Hello Rag,
>
> You might want to check out the 3 ele parasitic vertical Yagi in the last
> two editions of the ON4UN book. It is very easy to assemble, but does
> require an extensive ground system under each element. This is the design I
> have used for my 160 station for 15 years. My notes and photos are in the
> book. The parasitics are spaced 1/8 wavelength away from the driven element
> (tower). With 4 parasitic elements, coverage of four directions is
> possible.
> W8WWV and I have measured 5 dB of gain over a single omni vertical with
> over
> 30 dB of F/B for 20 KHz.
>
> 73!
> Tim K3LR
>
>
>
>
>
> -----Original Message-----
> From: topband-bounces at contesting.com [mailto:
> topband-bounces at contesting.com]
> On Behalf Of Stein Roar Brobakken
> Sent: Monday, June 14, 2010 4:13 PM
> To: topband at contesting.com
> Subject: Topband: 3 element array
>
>
>
> Hi
>
> I plan to modify either the 160 or 80m  antennas with a extra
> director/reflector
>
> I wonder if anyone have tried a 1/8 or 1/4 wl spaced array and added a
> director/reflector ?
> What I believe is to make a 1/4wl spaced array + a add a director 0.18-0.2
> WL into the direction.
>
> I think most is using a director element 0.18 wl to 0.125 wl away just like
> a ordinary yagi..
>
> ***do you ground this element with radials ??
>
>
> I have seen some details on the internet that guys like KC1XX etc have
> design after ON4UN book with LC tuning to a 3 inline vertical.... but I do
> have simple coax feeding without this in my system, and want to keep this.
> I have the ON4UN book, but I just want to know what will give the best GAIN
> in one direction ???
>
>
> 73 LA6FJA Rag
>
>
>
> _______________________________________________
> UR RST IS ... ... ..9 QSB QSB - hw? BK
>
>
>
>
> ------------------------------
>
> Message: 2
> Date: Wed, 16 Jun 2010 01:56:45 -0400
> From: "Eduardo Somoano C" <co8ly at frcscu.ciges.inf.cu>
> Subject: Topband: From CO8LY
> To: <yaesu at contesting.com>, "VHF Lista D." <vhf at w6yx.stanford.edu>,
>        <smirk at mailman.qth.net>, <sedxc at contesting.com>,        <
> rfi at contesting.com>,
>        <nodxa at contesting.com>, "Lista Antenas" <Antennas at mailman.qth.net>,
>        "Lista 160M <topband"@con.ceniai.inf.cu
> Message-ID: <000701cb0d18$d6b73c20$4bd0fea9 at eduardo>
> Content-Type: text/plain;       charset="Windows-1252"
>
> Dear friends
>
> I need some programs or formulates to design coil in (nH)
>
> Those coil needs to build them for a Low Pass Filters.
>
> I wait some opinion.
>
> Thank you in advance, strong hug.
>
> Eduardo. CO8LY
> =======================================
>
>
>
> ------------------------------
>
> _______________________________________________
> Topband mailing list
> Topband at contesting.com
> http://lists.contesting.com/mailman/listinfo/topband
>
>
> End of Topband Digest, Vol 90, Issue 13
> ***************************************
>