[Johnson] Automatic Break In TR Switch

Tue, 16 Apr 2002 09:20:14 -0500

thank you !
----- Original Message ----- 
From: "Guy Olinger, K2AV" <[email protected]>
To: <[email protected]>
Sent: Tuesday, April 16, 2002 8:32 AM
Subject: Re: [Johnson] Automatic Break In TR Switch


> One of the tubes has a grid connection to the coax line going through.
> Of course the grid conducts part of the rf cycle and does not the
> rest. Rectification. That makes harmonics. Need a tuner (in line all
> the time) or a low-pass filter between the TR switch and the antenna.
> 
> This is getting to be less of a concern in areas with cable or
> satellite use.
> 
> But if you use the stock TR switch unit, you do need a low pass filter
> or something in line while transmitting to keep them off the antenna.
> 
> 73, Guy.
> 
> 
> ----- Original Message -----
> From: "john_walker_beasley" <[email protected]>
> To: <[email protected]>
> Sent: Tuesday, April 16, 2002 7:38 AM
> Subject: Re: [Johnson] Automatic Break In TR Switch
> 
> 
> > Tell me more, please ?
> >
> > John
> >
> > ----- Original Message -----
> > From: "Guy Olinger, K2AV" <[email protected]>
> > To: <[email protected]>
> > Sent: Monday, April 15, 2002 6:37 PM
> > Subject: Re: [Johnson] Automatic Break In TR Switch
> >
> >
> > > Don't DARE run one of these without a good stiff lowpass filter
> behind
> > > it. Been there, done that. Urg.
> > >
> > > Guy.
> > >
> > >
> > > ----- Original Message -----
> > > From: "radioman" <[email protected]>
> > > To: <[email protected]>
> > > Sent: Monday, April 15, 2002 5:33 PM
> > > Subject: [Johnson] Automatic Break In TR Switch
> > >
> > >
> > > > Auto breaki-in
> > > > Just like a Porsche in a bad neighborhood.
> > > >
> > > > Transmits 4 kw with 2 recieving tubes and a rectifier..
> > > > of course it is all TVI.
> > > >
> > > > z+ADs-)
> > > >
> > > >
> > > >
> > > >
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> > >
> > >
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> >
> >
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> >
> 
> 
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