Return to KLUBNL.PL main page

rsgb_lf_group
[Top] [All Lists]

LF: Re: Sine or not

To: <[email protected]>
Subject: LF: Re: Sine or not
From: "F6CWN" <[email protected]>
Date: Sat, 17 Feb 2007 22:36:06 -0000
Delivered-to: [email protected]
References: <[email protected]> <[email protected]>
Reply-to: [email protected]
Sender: [email protected]
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 54µH air coils, because I had saturation problems with magnetics 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 going to find a solution.
Vy 73 Uwe

Jeff F6CWN


----- Original Message ----- From: <[email protected]>
To: <[email protected]>
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 180m 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






<Prev in Thread] Current Thread [Next in Thread>