Return-Path: X-Spam-DCC: paranoid 1290; Body=2 Fuz1=2 Fuz2=2 X-Spam-Checker-Version: SpamAssassin 3.1.3 (2006-06-01) on lipkowski.org X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,DNS_FROM_AHBL_RHSBL, HTML_40_50,HTML_MESSAGE autolearn=no version=3.1.3 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by paranoid.lipkowski.org (8.13.7/8.13.7) with ESMTP id t7MIY7Ek019272 for ; Sat, 22 Aug 2015 20:34:07 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1ZTDZB-0007Tw-Jl for rs_out_1@blacksheep.org; Sat, 22 Aug 2015 19:30:57 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1ZTDZB-0007Tn-8A for rsgb_lf_group@blacksheep.org; Sat, 22 Aug 2015 19:30:57 +0100 Received: from smtp208.alice.it ([82.57.200.104]) by relay1.thorcom.net with esmtp (Exim 4.86) (envelope-from ) id 1ZTDYD-0006EZ-Cg for rsgb_lf_group@blacksheep.org; Sat, 22 Aug 2015 19:30:56 +0100 Received: from PCFausto (87.16.53.248) by smtp208.alice.it (8.6.060.28) id 55BB68E103F09408 for rsgb_lf_group@blacksheep.org; Sat, 22 Aug 2015 20:29:41 +0200 Message-ID: From: "Fausto Coletti" To: References: <0LbuCq-1Z0UCd0iGK-00jKxe@mail.gmx.com> <55D718E5.8040508@posteo.de> <0FB4BC4D-1000-44F8-8855-C4B1B19CDDE8@talktalk.net> <4A6A0C74F3624CCC93FC660782555B89@PCFausto> <7E0C3B8C81574BB3B57589D478E1C624@White> In-Reply-To: Date: Sat, 22 Aug 2015 20:29:38 +0200 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Windows Mail 6.0.6002.18197 X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6002.18463 X-Scan-Signature: fefa6d96b1284f767a869566d1bc7791 Subject: Re: LF: Re: Band is open to VK! Content-Type: multipart/alternative; boundary="----=_NextPart_000_0022_01D0DD19.441C7160" X-SA-Exim-Scanned: Yes Sender: owner-rsgb_lf_group@blacksheep.org Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rs_out_1@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false X-Scanned-By: MIMEDefang 2.56 on 10.1.3.10 Status: O X-Status: X-Keywords: X-UID: 3949 This is a multi-part message in MIME format. ------=_NextPart_000_0022_01D0DD19.441C7160 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hi Mauro,=20 Marconi's transmitter in Podhu was a spark gap tx but at Signal Hill in = Canada he had use the sintonic receiver=20 as your patent number 7777.=20 73, Fausto IK4NMF=20 ----- Original Message -----=20 From: IK1WVQ Mauro=20 To: rsgb_lf_group@blacksheep.org ; rsgb_lf_group@blacksheep.org=20 Sent: Saturday, August 22, 2015 7:14 PM Subject: Re: LF: Re: Band is open to VK! the Marconi's trasmitter was a spark tx, with many harmonics and no = selective filters .. It possible what the transatlantic contact was made using the 3=B0 or = higher harmonic ??? 73 de Mauro IK1WVQ At 18:07 22/08/2015, Markus Vester wrote: Hi Fausto, LF, =20 >> do not forget that in 1901 Guglielmo Marconi received a signal = across the Atlantic at a frequency around 500 kHz=20 =20 ...did he really? I think there is some doubt around this story. = With a coherer, it would be very hard to prove the difference between = receiving a signal consisting of just three dots, and false triggering = by random statics. Considering a situation where a success was badly = needed, the reception may well have been the result of wishful thinking. =20 = http://www.antiquewireless.org/uploads/1/6/1/2/16129770/45-did_marconi_re= ceive_transatlantic_radio_signals_in_1901.pdf=20 = http://www.antiquewireless.org/uploads/1/6/1/2/16129770/46-did_marconi_re= ceive_transatlantic_radio_signals_in_1901.pdf=20 =20 Today we'd simply say "show us the screenshot" ;-) =20 Best 73, Markus =20 From: Fausto Coletti=20 Sent: Friday, August 21, 2015 9:59 PM To: rsgb_lf_group@blacksheep.org=20 Subject: Re: LF: Re: Band is open to VK! :-)) I have a 8 motor drone but can fly only 20 minutes with one Kg = payload.=20 A kite or baloon is better.=20 Seriously speaking, the difficulties are very big, as rightly says = Stefan 160 meters band, has a very different behavior but, do not forget = that in 1901 Guglielmo Marconi received a signal across the Atlantic at = a frequency around 500 kHz and with a receiver that in comparison with = those of today was a tack. Ok were "only" 3500 Km.=20 Today what are we doing more with our ultramodern equipment?=20 Today we have SDR, filters, DSP, noise reducer, Marconi at Signal = Hill had a drop of mercury.=20 Today obtain a considerable power is relatively easy and = inexpensive,=20 114 years ago there were only Ruhmkorff coils then, how much power = was actually radiated=20 no one ever taken the trouble to measure it.=20 But as they did then my compatriot to get those great results: = trying, trying and trying again trying to improve something every day.=20 The important thing is to think that nothing is impossible, maybe = improbable but not impossible.=20 Tonight I bored with the history of telegraphy...:-)=20 =20 73, Fausto IK4NMF=20 ... Nessun virus nel messaggio. Controllato da AVG - www.avg.com Versione: 2015.0.6125 / Database dei virus: 4392/10484 - Data di = rilascio: 22/08/2015 ------=_NextPart_000_0022_01D0DD19.441C7160 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Hi Mauro,
 
Marconi's transmitter in Podhu was a = spark gap tx=20 but at Signal Hill in Canada he had use the sintonic receiver =
as your patent number 7777. =
 
73, Fausto IK4NMF
----- Original Message -----
From:=20 IK1WVQ = Mauro
Sent: Saturday, August 22, 2015 = 7:14=20 PM
Subject: Re: LF: Re: Band is = open to=20 VK!


the Marconi's trasmitter was a spark tx, with many=20 harmonics and no selective filters ..

It possible what the=20 transatlantic contact was made using the 3=B0 or higher harmonic = ???

73=20 de Mauro IK1WVQ


At 18:07 22/08/2015, Markus Vester = wrote:
Hi Fausto, LF,
 
>> do not forget that in 1901 = Guglielmo=20 Marconi received a signal across the Atlantic at a frequency around = 500 kHz=20
 
...did he = really? I think=20 there is some doubt around this story. With a coherer, it would be = very hard=20 to prove the difference between receiving a signal consisting of = just three=20 dots, and false triggering by random statics. Considering a = situation where=20 a success was badly needed, the reception may well have been the = result of=20 wishful thinking.
 
http://www.antique= wireless.org/uploads/1/6/1/2/16129770/45-did_marconi_receive_transatlanti= c_radio_signals_in_1901.pdf=20
http://www.antiquewireless.org/uploads/1/6/1/2/1612977= 0/46-did_marconi_receive_transatlantic_radio_signals_in_1901.pdf=20
 
Today we'd = simply say=20 "show us the screenshot" ;-)
 
Best=20 73,
Markus
 

From: Fausto Coletti =
Sent:=20 Friday, August 21, 2015 9:59 PM
To: rsgb_lf_group@blacksheep.org= =20
Subject: Re: LF: Re: Band is open to VK!

:-)) I have a 8 motor drone but can fly only = 20 minutes=20 with one Kg payload.
A kite or baloon is better.
Seriously = speaking,=20 the difficulties are very big, as rightly says Stefan 160 meters = band, has a=20 very different behavior but, do not forget that in 1901 Guglielmo = Marconi=20 received a signal across the Atlantic at a frequency around 500 kHz = and with=20 a receiver that in comparison with those of today was a tack. Ok = were "only"=20 3500 Km.
Today what are we doing more with our ultramodern = equipment?=20
Today we have SDR, filters, DSP, noise reducer, Marconi at = Signal Hill=20 had a drop of mercury.
Today obtain a considerable power is = relatively=20 easy and inexpensive,
114 years ago there were only Ruhmkorff = coils=20 then, how much power was actually radiated
no one ever taken the = trouble=20 to measure it.
But as they did then my compatriot to get those = great=20 results: trying, trying and trying again trying to improve something = every=20 day.
The important thing is to think that nothing is impossible, = maybe=20 improbable but not impossible.
Tonight I bored with the history = of=20 telegraphy...:-)
 
73, Fausto IK4NMF =
...

Nessun virus nel=20 messaggio.
Controllato da AVG - www.avg.com
Versione: 2015.0.6125 / = Database=20 dei virus: 4392/10484 - Data di rilascio:=20 22/08/2015

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