Hi Steve,
Prosistel control (original with PST61D rotor). From control to MFJ-434 is 1
feet.
I disconected the ground from MFJ-434 to get it longer from controller and
no problem. Seems the problem is when conected to ground!!...
I put the MFJ-434 again 1 feet from the rotor control WITHOUT ground and no
problem. I connect the ground and start the problem. I disconnect again the
ground and NO problem... Incredible...
I don´t know how to know if there´s PWM...
73,
Jorge
CX6VM/CW5W
-----Mensaje original-----
De: towertalk-bounces@contesting.com
[mailto:towertalk-bounces@contesting.com] En nombre de Steve London
Enviado el: Sábado, 08 de Noviembre de 2008 12:12 p.m.
Para: towertalk@contesting.com
Asunto: Re: [TowerTalk] RF in rotor control ?
What kind or rotator controller ? Is it doing some kind of PWM (pulse width
modulation) when it starts and stops the rotator, that is inducing EM fields
in the MFJ voice keyer ?
How close is the rotator controller to the MFJ-434 voice keyer ?
73,
Steve, N2IC
----------------------------------------------------------------------------
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I did a few more tests and seems the problem is when i use the MFJ-434 Voice
Keyer.
In CW no problem. And when I connect the Heil Pro Set direct to the radio
also no problem.
When using the MFJ-434, the radio is activated the first 5-7 degrees of
rotation, stop TX and return to TX in the last 5-7 of rotation.
Maybe something about ground in the MFJ-434, but it is connected to ground,
also the rotor control from one of the screws.
73,
Jorge
CX6VM/CW5W
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