[TowerTalk] RF in rotor control ?

[Jorge Diez - CX6VM]

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 at contesting.com
[mailto:towertalk-bounces at contesting.com] En nombre de Steve London
Enviado el: Sábado, 08 de Noviembre de 2008 12:12 p.m.
Para: towertalk at 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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