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From: "hamilton mal" <g3kev.ham@virgin.net>
To: <rsgb_lf_group@blacksheep.org>
References: <052220071131.129.4652D4A5000C8B480000008122007507840B97010D0A020E06979D0E03@comcast.net>
Date: Tue, 22 May 2007 18:06:43 -0000
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Subject: Re: LF: 500kHz Distance
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Status: O

HIGH NOON !!!!!!!!!

Aim high, they can only say NO or scale it down, but they are unlikely to
suggest GO UP.

----- Original Message -----
From: <k2ors@comcast.net>
To: <rsgb_lf_group@blacksheep.org>; "rsgb" <rsgb_lf_group@blacksheep.org>
Cc: "lawrence mayhead" <laurie.mayhead@googlemail.com>
Sent: Tuesday, May 22, 2007 11:31 AM
Subject: Re: LF: 500kHz Distance


> Laurie,
> > The problem with an erp limit as low as 0.1W is that there is no
incentive
> > to develop better antennas.
> > We can easily develop enough power to drive even the most inefficient of
> > antennas.
> > Not like 136 where it needed 1000w to achieve 1W erp even with quite a
large
> > ant. so there was
> > an incentive and a challenge to develop better antennas.
>
>
>   I agree 100%. Here in the U.S., the 500kHz experimental license WD2XSH
is limited to 20 watts erp, but thats only because 20 watts was all that was
requested. The group felt (wrongly, I believe ) that the FCC would be more
likely to issue a license if the power was kept low. It is my experience and
understanding of the FCC that there are only two things that they care about
when issuing an experimental license 1) No conflicts with existing users,
and 2)That all of the required issues are addressed on the application
forms. I requested and received a 136 kHz license (WD2XGJ) with 10 watts
ERP, in retrospect I think that the FCC would have granted me 100watts or
1kW ERP on 136 just as easily - I would have had a difficult time radiating
1kW on 136 though!
>
> The WD2XSH experiment is supposed to demonstrate the reliability of
groundwave on the band with an eye to emergency comms. Many in the XSH group
have an aversion to QRSS which in any event is not  really useful for
passing emergency traffic. Of course as we get into Spring and Summer the
noise is steadily rising, and 20 watts of c.w. will not reliably span a
country the size of the U.S..
>
>    Our licensing process differs from the U.K. N.O.V. process, the
experimental licenses are issued by a different branch of the FCC than
issues amateur licenses.  I have recently filed a new application, apart
from WD2XSH for 200watts ERP from 505-515 kHz with an eye toward
investigating new digital modes.  I felt that 200 watts ERP would be a
significant (10dB) step above the current XSH license, and would be about
the limit that I would be willing to run. The experimental licensing process
here is a slow one and it will take some time to bear fruit.
>
> --
> 73 Warren K2ORS/WD2XGJ/WD2XSH/23/WE2XEB/2
> FN42hi
> http://www.w4dex.com/wd2xgj.htm
>
>
>