[SADXA] First Demonstration of Radio by Marconi Dec. 12th, 1896
MikeZW0LTL at aol.com
MikeZW0LTL at aol.com
Tue Dec 13 01:54:33 EST 2016
Nice!
73
Mike
W0LTL
In a message dated 12/12/2016 10:29:06 P.M. Pacific Standard Time,
ted at teddowning.com writes:
A great answer, Bill. Merry 12 December.
Ted w7key
> On Dec 12, 2016, at 5:29 PM, W7EXG (Bill) <W7EXG at q.com> wrote:
>
> Hi Ted,
>
> In the spirit of your DX spot questions, here is my response.
>
> On another December 12, but in year 1901, Marconi succeeded in sending
the
> first radio transmission (estimated at 850kHz) 2000 miles across the
> Atlantic Ocean, from England to Newfoundland. This disproved detractors
who
> told him that the curvature of the earth would limit transmission to 200
> miles or less.
>
> His message was Morse-code signal letter "S"
>
> Thus December 12 is actually a GREAT DAY for Amateur Radio, since it was
on
> this DAY in 1901, when "some type" of ionospheric reflection was proven,
> suggesting world wide DX was possible.
>
> Fortunately the FCC was not involved yet, so no call Sign was required.
> However, rumor has it, that Marconi's WANTED TO HAVE the first amateur
radio
> call, so his 1 by call was -- S. In that context, Marconi WAS the 1st
> Amateur Radio Operator, and 1st DXer on Dec. 12, 1901. This is an
amazing
> 1st.
>
> Since 2000 mi at 850kHz clearly was a nighttime propagation, the
propagation
> reflection was off the F layer.
>
> However, the transmitting system consisted of a dipole, driven by an
> induction coil and a spark gap.
>
> I am guessing that the spark gap still radiated energy at frequencies way
> ABOVE the MUF at the time, and some of that high frequency energy escaped
> into space -- and is still out there.
>
> If the universe is curved with a circumference of 115 Light Years to THIS
> DATE, I suggest listing tonight on 20m or higher frequencies, about
> midnight, for ... ... ... ...
>
> But, be sure your using one of those whiz-bang SDR receivers with a noise
> floor below absolute temperature.
>
> My DX Spot for Dec 12, IS NOT FOR TODAY, BUT mainly FOR TONIGHT, so you
> still have a chance at this rare DX event!!
>
> If you hear radio Station with call sign S, give him a call.
>
> Might be hard to get a confirmation, but you might check LOTW anyway. It
> will take awhile for S to hear your call and get it in the LOTW data
base,
> however.
>
> Be wary of bogus "S" stations.. who may be pretending to be "S". This is
> always an issue for us DXers.
>
> Pile-ups.. well YES!. Since I just put S on the DX Cluster forecast for
> tonight, I suspect the pile-ups might be intense.
>
> Good luck and good DX! And Mainly ... Have Fun!!
>
> 73s,
>
> Bill W7EXG
>
> -----Original Message-----
> From: SADXA [mailto:sadxa-bounces at mailman.qth.net] On Behalf Of Theodore
> DOWNING
> Sent: Monday, December 12, 2016 8:48 AM
> To: Southern AZ DX Association E-Mail Reflector
> Subject: Re: [SADXA] First Demonstration of Radio by Marconi Dec. 12th,
1896
>
> Now that's a DX spot for sure! Was it today? Darn it, What call sign?
What
> frequency? I doubt there will be a pile up. :-)
>
> Ted
> w7key
>> On Dec 12, 2016, at 8:28 AM, W7EXG (Bill) <W7EXG at q.com> wrote:
>>
>> Dec. 12, 1896:
>>
>> First demonstration of the radio:
>> Marconi demonstrates his radio set to the public, today -- on Dec. 12th
> in
>> 1896
>>
>> 73s,
>>
>> Bill W7EXG
>>
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