Message-ID: <A7B399DC39DB41E7A30B7F94EFF87E4E@gnat>
From: "Alan Melia" <alan.melia@btinternet.com>
To: <rsgb_lf_group@blacksheep.org>, <rsgb_lf_group@yahoogroups.co.uk>
References: <1214051631.20151125112538@chriswilson.tv>
Date: Wed, 25 Nov 2015 12:03:27 -0000
MIME-Version: 1.0
Subject: LF: Re: [rsgb_lf_group] Is a capacative top hat only as good as its lowest point?
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Status: O

Hi Chris I think any raising of the top-wire (loop) will increase the the
vertical component slightly and the ERP is proportional to effective height
squared. It also looks less obtrusive if higher :-))  It is cheaper ERP than
watts :-))

Alan
G3NYK

----- Original Message ----- 
From: "Chris Wilson chris@chriswilson.tv [rsgb_lf_group]"
<rsgb_lf_group@yahoogroups.co.uk>
To: <rsgb_lf_group@blacksheep.org>; <rsgb_lf_group@yahoogroups.co.uk>
Sent: Wednesday, November 25, 2015 11:25 AM
Subject: [rsgb_lf_group] Is a capacative top hat only as good as its lowest
point?


> 25 November 2015
>
>
> As I am under a lot of pressure with work I was thinking of a quick
> and simple way to improve my aerial. Better ground wires under the
> perimeter of my horizontal quad loop "top hat" is number one. But
> another thing I could probably implement fairly easily is to raise one
> corner of it by running that corner to the top of my 40 foot mast with
> a fairly long support cord to keep the loop a fair way from it.
> Would raising just one corner, (which would also allow a somewhat
> higher vertical section), achieve much, if anything? Thanks.
>
>
> BTW, the power supply bridge rectifier blew in my G3YXM amp the day
> before yesterday, and I was testing with the "HV" sourced from a 0 to
> 40V bench supply. For fun I tried to see how low a voltage to the
> FET's it would run at, and I got down to 4.9V measured actually at the
> FET's, running. I achieved this contact last night:
>
> 2015-11-24 17:50  2E0ILY 0.137536 -25   0 IO82qv 0.1 G4MSN IO93fu 129 34
>
> It has triggered me to pull my finger out and build the 136 kHz filter
> for my Hans Summer U3 QRP transmitter!
>
>
>
>
>
> -- 
>
>
> Best regards,
> Chris  2E0ILY                           mailto:chris@chriswilson.tv
>
>
>
> ------------------------------------
> Posted by: Chris Wilson <chris@chriswilson.tv>
> ------------------------------------
>
>
> ------------------------------------
>
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