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Re: LF: Re: WSPR 503.5

To: [email protected]
Subject: Re: LF: Re: WSPR 503.5
From: John P-G <[email protected]>
Date: Sun, 25 Jan 2009 20:05:46 +0000
In-reply-to: <00e101c97f26$eefca7b0$6401a8c0@asus>
References: <20090125092908.0aec06a4@lurcher> <7EC707A6E2D94414AEBBC52C6159581C@JimPC> <AAD643EEA70C4FC99B4B3E17041C8F54@JimPC> <002001c97f0a$cf16fac0$ae01a8c0@youry0mkaz8jaq> <20090125165335.47fc3399@lurcher> <7690F13DCE5D44BA8A5AA126607E7979@JimPC> <[email protected]> <20090125180430.1d63e1c7@lurcher> <6449616DC58940A19C537A59F53828DA@AGB> <00d201c97f20$bd909520$6401a8c0@asus> <00d301c97f22$87d998d0$6401a8c0@asus> <20090125194232.05798210@lurcher> <00e101c97f26$eefca7b0$6401a8c0@asus>
Reply-to: [email protected]
Sender: [email protected]

Hello Gary and LF,

Yes, I'd agree that we should stick to TX power rather than ERP in WSPR
beacon data.

This allows comparisons of antenna efficiencies to be made by comparing
reported power vs s/n ratios, normalizing for TX power.

An efficient antenna will give larger ERP for given TX power, and
should show a commensurately larger S/N ratio. This method also removes
the fudge and fiddle factors most people have to make to estimate ERP.

The available choices of power level, in the software option setting, go
up to 60dBm, so there's even scope for the EAST RIDING FOG HORN to join
in.

Cheers,

John

 On Sun, 25 Jan
2009 19:55:54 -0000 "Gary - G4WGT" <[email protected]> wrote:

> Hi John, LF,
> 
> You wrote :-
> As to power reporting, I see that most people on LF/MF are attempting
> to estimate ERP, and use this figure in the beacon data.
> 
> This aspect of power reporting method has been briefly discussed on
> LF but even on the HF bands there may well be as large a difference
> in antenna gains as there is on 500KHz.
> 
> I believe that we should adopt the recommended WSPR standard then all
> the reporting is the same whether it is HF, MF or LF.
> 
> Cheers,
> 
> Gary - G4WGT.

> 
> 


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