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Re: LF: opera 137 beacon going

To: <[email protected]>
Subject: Re: LF: opera 137 beacon going
From: "Graham" <[email protected]>
Date: Tue, 10 Jan 2012 16:27:23 -0000
Importance: Normal
In-reply-to: <CAA8k23Qqo4ZagVGLdEiUqGSU-HL_XNpues+rPAr7NwOhiyd1zQ@mail.gmail.com>
References: <CAA8k23Qqo4ZagVGLdEiUqGSU-HL_XNpues+rPAr7NwOhiyd1zQ@mail.gmail.com>
Reply-to: [email protected]
Sender: [email protected]

Amazing , day 10 , ZL> EU decodes on HF 10Mhz and a beacon on 136 will take a look for you later Andy
Tnx -G



--------------------------------------------------
From: "Andy Talbot" <[email protected]>
Sent: Tuesday, January 10, 2012 4:06 PM
To: <[email protected]>
Subject: LF: opera 137 beacon going

Having had to modify a 137kHz source to be able to generate on-off
keying, I'm transmitting a signal using 2.048s symbol mode on 137420Hz
33% duty cycle (for now)

This is based around my PIC generator for the mode
Details at   http://www.g4jnt.com/PIC_Opera_Source.pdf  and
http://www.g4jnt.com/OperaBeacon.zip

As its an independent source, with no PC in the Tx chain - no IP
packets will be sent to t'web showing the details

and its definitely gettign out....

15:46 136 G8IMR de F6CNI Op8 391 km -28 dB in 136 kHz dial nr Paris


Andy
G4JNT



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