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From: "F6CWN" <f6cwn@orange.fr>
To: <rsgb_lf_group@blacksheep.org>
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Date: Sat, 17 Feb 2007 22:36:06 -0000
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Subject: LF: Re: Sine or not
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17./02/2007   2231z


Good night Uwe,

Perhaps a low pass filter problem, there is perhaps too much harmonic...
I suppose that everything goes fine with a pure resistive load.
What are the values of the components of your low pass filter?
I use 54=B5H air coils, because I had saturation problems with magnetics=20
supports, it is bigger but better (from my side).
In QRP it is easy but in QRO troubles are there! I hope that you are goin=
g=20
to find a solution.
Vy 73 Uwe

Jeff F6CWN


----- Original Message -----=20
From: <uwe-jannsen@versanet.de>
To: <rsgb_lf_group@blacksheep.org>
Sent: Saturday, February 17, 2007 7:10 PM
Subject: LF: Sine or not


> Hi all,
> at the output of my LF TX the phase of V and A looked nice,
> both clean sines and in phase until I lengthened the top wires from 180=
m=20
> to
> 200m.
> the system is in resonance, the phase OK. but the form of the A sine is
> chaotic:
> pse see atachment.
>
> my question, what is wrong?
>
> regards
> Uwe/dj8wx
>
>
>=20