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Date: Tue, 17 Nov 2015 14:07:14 +0000
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From: Andy Talbot <andy.g4jnt@gmail.com>
To: rsgb_lf_group@blacksheep.org, rsgb_lf_group@yahoogroups.co.uk
Subject: LF: Re: EbNaut test transmission
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Frequency accuracy is better than that, more like 137780.0000 +/- 0.2mHz
The DOCXO is staying within a part per billion now the weather has gone
colder and the house temperature is governed by the central heating.  That
has sort-of turned it into a triple ovenned reference

Andy  G4JNT


On 17 November 2015 at 14:04, Andy Talbot <andy.g4jnt@gmail.com> wrote:

> Mainly as a system test, I'm radiating an EbNaut signal.  Details are
>
> Frequency 137780.000  +/- 1mHz  (DOCXO only for this test)
> Coding 8K19A
> Symbol period  0.5s   (2 symbols / sec)
> Message length is 9 characters consisting of a callsign and the
> abbreviated name of a well-known cockatiel
>
> Transmission is on every 10 minutes (although the message itself is just
> under 6 mins - there is about 4 of plain carrier)
>
> Keying is using my soft Gaussian 10ms ramp and pleased to say there is not
> the slightest click or any sound from the PA or loading coil when it
> transitions.
>
> The PA is set to its minimum setting  and in this wet weather the
> increased antenna resistance is such that that means about 200 Watts of
> RF,  and  probably no more than 50mW ERP
>
> Andy  G4JNT
>

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<div dir=3D"ltr"><div>Frequency accuracy is better than that, more like 137=
780.0000 +/- 0.2mHz</div><div>The DOCXO is staying within a part per billio=
n now the weather has gone colder and=C2=A0the house temperature is governe=
d by the central heating.=C2=A0 That has sort-of turned it into a triple ov=
enned reference</div><div><br></div><div>Andy=C2=A0 G4JNT</div><div><br></d=
iv></div><div class=3D"gmail_extra"><br><div class=3D"gmail_quote">On 17 No=
vember 2015 at 14:04, Andy Talbot <span dir=3D"ltr">&lt;<a href=3D"mailto:a=
ndy.g4jnt@gmail.com" target=3D"_blank">andy.g4jnt@gmail.com</a>&gt;</span> =
wrote:<br><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;bord=
er-left:1px #ccc solid;padding-left:1ex"><div dir=3D"ltr"><div>Mainly as a =
system test, I&#39;m radiating an EbNaut signal.=C2=A0 Details are </div><d=
iv><br></div><div>Frequency 137780.000=C2=A0 +/- 1mHz=C2=A0 (DOCXO only for=
 this test)</div><div>Coding 8K19A</div><div>Symbol period=C2=A0 0.5s=C2=A0=
=C2=A0 (2 symbols / sec)</div><div>Message length is 9 characters consistin=
g of a callsign and the abbreviated name of a well-known cockatiel</div><di=
v><br></div><div>Transmission is on every 10 minutes (although the message =
itself is just under 6 mins - there is about 4 of plain carrier)</div><div>=
<br></div><div>Keying is using my soft Gaussian 10ms ramp and pleased to sa=
y there is not the slightest click or any sound from the PA or loading coil=
 when it transitions.</div><div><br></div><div>The PA is set to its minimum=
 setting=C2=A0 and in this wet weather the increased antenna resistance is =
such that that means about 200 Watts of RF,=C2=A0=C2=A0and =C2=A0probably n=
o more than 50mW ERP</div><div><br></div><div>Andy=C2=A0 G4JNT</div></div>
</blockquote></div><br></div>

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