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Re: [CQ-Contest] ARRL-DX SSB : How were condx ?

To: "Yannick DEVOS \(XV4Y\)" <yannick.devos@online.fr>
Subject: Re: [CQ-Contest] ARRL-DX SSB : How were condx ?
From: "Tom W8JI" <w8ji@w8ji.com>
Reply-to: Tom W8JI <w8ji@w8ji.com>
Date: Wed, 7 Mar 2012 10:18:21 -0500
List-post: <cq-contest@contesting.com">mailto:cq-contest@contesting.com>
<<<Yes I agree with you that condx can vary greatly with only hundred of 
miles, especially when condx are tricky. That's why I needed several 
opinions because it only has a statistical value. I was not asking for a 
definitive judgement over my antenna choice but more to know if I had to 
worry or not.>>>>

They especially vary when the distance is long and the path over or near 
earth's magnetic poles. :-)

<<<On 12m and 10m my beam is acting more like an "improved dipole" (8dBi 
gain calculated) and in practice I only see 1 S-point difference with the 
GP. Again that's coherent.>>

Over earth or freespace gain? A dipole should be about 8 dBi over earth, but 
only about 2.1 dBi freespace. Shouldn't the Moxon be 11 dBi or so over 
earth, and about 6 dBi freespace? Aren't they around 3 or 4 dBd typically?

73 Tom 

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