[TenTec] Centurion

[Phil Chambley, Sr.]

Never tried to find new springs.

After swapping springs grid/fil, never had a problem.  Grid pins don't heat
up, so gripper doesn't lose its grip again after tightening.

Phil
----- Original Message ----- 
From: "Gary Hoffman" <ghoffman at spacetech.com>
To: "Discussion of Ten-Tec Equipment" <tentec at contesting.com>
Sent: Tuesday, December 13, 2005 8:34 PM
Subject: Re: [TenTec] Centurion


> Excellent points.
>
> Can one obtain replacement gripper springs ?
>
>
>
> ----- Original Message ----- 
> From: "Phil Chambley, Sr." <k4dpk at comcast.net>
> To: "Discussion of Ten-Tec Equipment" <tentec at contesting.com>
> Sent: Monday, December 12, 2005 8:19 PM
> Subject: Re: [TenTec] Centurion
>
>
> > Re 3-500Z problems....Johnson 275 and similar sockets:
> >
> > I2R losses due to poor contact between filament pins and socket grippers
> > result in melting solder out of the pins.
> > This, no doubt, caused many tubes to be discarded before it became known
> how
> > to correct the problem.
> >
> > The same heat that melts the solder causes the gripper spring to lose
its
> > temper, so the gripper doesn't squeeze the pin as tight.  If this isn't
> > corrected, the problem will simply recur.
> >
> > After repairing the tube pin, I swap the gripper springs from one of the
> > grids to the offending filament gripper on the socket.   Squeeze them
both
> > tight before installing, and make sure the grippers are all cleaned.  I
> use
> > a .22 caliber bore brush.
> >
> > 73
> > Phil K4DPK
> >
> > VFO Stabilizers and other gadgets www.k4dpk.com
> >
> >
> > ----- Original Message ----- 
> > From: "Lyle Dunlap" <lyle3dd at grics.net>
> > To: "Discussion of Ten-Tec Equipment" <tentec at contesting.com>
> > Sent: Monday, December 12, 2005 11:00 AM
> > Subject: Re: [TenTec] Centurion
> >
> >
> > > Gary,
> > >
> > > Good suggestion about socket pin friction or tightness.  When the
3-400Z
> > > tube first came out, quite some time before the 500Z .  The
recommended
> > > socket at the time was made from plastic.  The fil. connections became
> > very
> > > weak and I had to use an "amp Clamp"
> > >
> > > Lyle W9FCX
> > >
> > >
> > > _______________________________________________
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> > >
> >
> >
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> >
>
>
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