Andy,
good copy in JO20ix, on the 500kHz antenna.
Also F5WK who is even audible.
73, Rik ON7YD - OR7T
________________________________________
Van: [email protected] [[email protected]]
namens Andy Talbot [[email protected]]
Verzonden: dinsdag 10 januari 2012 21:04
Aan: [email protected]
Onderwerp: Re: LF: opera 137 beacon going
600 Watt of Rf to 7m high Tee with Gnd loss about 80 ohms. I reckon
about -40dBi gain so call it a few tens of mW
Andy
On 10 January 2012 19:58, Graham <[email protected]> wrote:
> Reaching Gary with +7 dB in hand , what is the carrier power ?
>
> Be very interesting to see what the s/n would be from MAL
> over similar range and similar path , with all that wire out
> should be able to catch Andy's beacon into the +dB scale
>
> G..
> 18:49 136 G8IMR de G4WGT Op8 314 km -19 dB in Coppull, nr Preston
>
> --------------------------------------------------
> 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
>>
>
|
