Madhukar jee,
I am no ham
I saw one link with recorded audios to prove that noise cancelling antenna is possible,
the entire link is here. Please go through and i hope your Localised noise issue could be sorted.
http://home.telkomsa.net/jeanward/noise_canceller.html
and
http://users.tpg.com.au/users/ldbutler/NoiseCancelling.htm
all the best.
regards
sarma
--- In HamBrewers@yahoogroups.com, vu3mes <satyansarath@...> wrote:
>
> Madhukarji - try this link, i installed a loop in my previous qth on
> ideas mentioned here. though a full wave loop is difficult considering the
> real estate requirements in city scenarios, you can always try something.
> to reduce the noise.
>
> http://www.k5rcd.org/hor%20loop%20instruct.htm
>
> best of luck
>
> 73
> vu3mes
>
> On 15 November 2012 15:48, Madhukar VU2MUD <vu2mud@...> wrote:
>
> > **
> >
> >
> > I face a very high level of electrical noise at my new Permanent QTH -
> > being just about 300 Mtrs from HT Lines - becoming a Permanent QRM too!!
> >
> > This is present at unacceptable levels - s-9 + most of the times. This
> > made me consider a Loop/Delta Loop Antenna for 7 Mhz to handle the noise
> > issue.
> >
> > Planning for a Horizontal installation - I understand that this gives me
> > only Ground Waves - OK for now.
> >
> > I need clarifications on the following issues.
> >
> > 1. Most of the Links that I see on the web is for a full wave design.
> > What limits the use of a Half Wave Delta Loop??
> > 2. Where should bthe feedpoint be?
> > 3. What will be feedline impedence??
> > 4. What kind of Balun is required to feed to a 50 Ohm cable?
> > 5. What else is to be considered??
> >
> > I have a LDG - Z-100 Plus antenna tuner.
> >
> > Madhukar – VU2MUD
> > Yahoo Mail: vu2mud@...
> > Gmail: vu2mud@...
> > General Blog: http://vu2mud.blogspot.com
> > Satellite Blog: http://workingtheoscars.blogspot.com
> > Location: Lat: 13° 0' 6'' N; Long: 77° 32' 10'' E;
> > Grid Loc: MK83SA
> >
> >
> >
>
>
>
> --
> 73s de vu3mes satyan sarath
> www.qrz.com/callsign/vu3mes www.chennaihams.blogspot.com
> www.satyansarath.param.mobi [mobile webpage]
> **** ham radio - one world - one language ****
>
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