Return to KLUBNL.PL main page

[Top] [All Lists]


To: [email protected]
Subject: LF: MF WSPR
From: DK7FC <[email protected]>
Date: Fri, 27 Mar 2015 16:21:36 +0100
Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed;; s=20120113; h=from:message-id:date:user-agent:mime-version:to:subject:references :in-reply-to:content-type; bh=LnhKSf2ITNWg8gmsAll5pG7+dJdkWdXPejRwkgpitPU=; b=bFKMp5jTI+lPFWirT1G2IH7qgYsvXt+Sas6jdXZLB0MWNtUeLthJfvjwoCNOqdl1Ks 2jou2+wPmlaTXoayJHa1DRPaOl0/2wJi/eATnHRanMrSZCH9YGLo2nWbv3CFkzOEtAr0 r9k/xx8vYWMyz+Ltqo9eQt5RPOPBCTGpVFSaiJhFwuibDxwpA6z6oSsg+xmZdfak9QWa OZEMOl5UO3i6nEaLN6453gP2UoPh4zsaD0DRMJjnHG6K6t8rV8Z2+CM9QEEuAYzPMSK5 ZqetTxns6z6wPENlaDJ2pkHtlQZsoB5Y5Y0rvM71IAtYoI7KS2TNcguwamHI/SdQ/sDn EjBQ==
In-reply-to: <[email protected]>
References: <[email protected]> <[email protected]> <[email protected]> <[email protected]> <[email protected]>,<[email protected]> <[email protected]> <[email protected]>,<[email protected]> <[email protected]> <[email protected]>
Reply-to: [email protected]
Sender: [email protected]
User-agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; de; rv: Gecko/20100227 Thunderbird/3.0.3
Just FYI, i switched to my normal "1W" ERP on MF because i need the Raspi for some other tests.
I see there are quite many stns "listening" to that time. Obviously it becomes an active MF evening!
Unfortunately i have no time this evening (party) so i cannot join the CW folks :-( But tomorrow!! :-)

73, GL, Stefan

Am 27.03.2015 14:53, schrieb DK7FC:

Am 27.03.2015 14:43, schrieb Rik Strobbe:

Hi Stefan, all,


And i wrote an email to PE1NNZ and asked to a modification of the C-program to generate a signal with 4x higher FSK shift. Then it it would be possible to use that version for OMs having a divide-by-4 stage in their PA (to get a perfect 50% duty cycle and rectangular shape (after passing optocouplers etc)). This would be a safe way to drive my QRP PA, testwise of course...

I have written such a program for windows (actually you can set the devider ratio to any number between 1 and 100).
That way any HF TRX can be used to gerate a MF (or LF) WSPR signal with a simple CMOS ot TTL divider IC.
If anyone is interested just let me know ...
73, Rik  ON7YD - OR7T
Hi Rik,

Sounds good but how does the windows PC generate the RF? You know, the Raspi directly generates a "tone" at 475 kHz (or any other frequency up to 250 MHz), not at 1500 Hz.
Anyway it is interesting. Does your program provide time sync and a GUI to type callsign/locator/erp and a "duty cycle"?

73, Stefan
<Prev in Thread] Current Thread [Next in Thread>