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Re: LF: Alpha dashes

To: rsgb <[email protected]>
Subject: Re: LF: Alpha dashes
From: Jacek Lipkowski <[email protected]>
Date: Wed, 19 May 2010 21:11:37 +0200 (CEST)
In-reply-to: <008f01caf784$779a11d0$0301a8c0@your91hoehfy9g>
References: <008f01caf784$779a11d0$0301a8c0@your91hoehfy9g>
Reply-to: [email protected]
Sender: [email protected]

On Wed, 19 May 2010, mal hamilton wrote:

In plain english who can receive the alpha dashes and at what strength around EU.

unfortunately they are down now, so i can't tell you what is the s/n now. but it's hard not to receive these stations. with an e-field antenna (or with a h-field antenna but at some distance from powerlines) you can hear them without any downconversion, provided that your headphones (and ears :) have high enough frequency cutoff. with downconversion to 800Hz i would give it 599 if it were cw (actually they sometimes transmit a marker in cw)

a much better test of antennas would be if people can receive SAQ with the key up (when it is not transmitting) - i don't know what the output power is, but lower than ALFA, probably a few kW.

jacek


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