Many thanks Bob, I don't know how that happened. Mike
----- Original Message -----
From: "Bob Nielsen" <nielsen@oz.net>
To: <amps@contesting.com>
Sent: Monday, July 24, 2006 10:39 AM
Subject: Re: [Amps] 3-500Z convertion
> Maybe you would have better results if you addressed your email for
> Hsu to sohu.com instead of sohu.co. His mail server appears to be
> reachable:
>
> $ host -t mx sohu.com
> sohu.com mail is handled by 10 sohumx.sohu.com.
>
> $ telnet sohumx.sohu.com 25
> Trying 61.135.132.100...
> Connected to sohumx.sohu.com.
> Escape character is '^]'.
> 220 sohumx180.sohu.com ESMTP
>
> 73 - Bob, N7XY
>
>
> On Jul 24, 2006, at 6:15 AM, Mike Schatzberg wrote:
>
> > Hello Hsu:
> >
> > As others have discovered, we can not reply directly to you from
> > the United
> > States. Additionally, my spam filter automatically deleted your
> > email to
> > me, before I could read your message.
> >
> > I have changed my filter settings, and your emails will now be
> > received.
> > Please resend your email to me. It will reach my computer this time.
> >
> > Thank you.
> >
> > 73,
> >
> > Mike
> > W2AJI
> > ----- Original Message -----
> > From: "Hsu" <Jbenson@sohu.com>
> > Cc: <amps@contesting.com>
> > Sent: Sunday, July 23, 2006 8:14 AM
> > Subject: Re: [Amps] 3-500Z convertion
> >
> >
> >> Thanks Peter!
> >> I have got a a died TL922 as a junk,I only pay $100 for it.so I
> > don't want pay for it too much.Althought the 3-500Z are made in
> > China, but I
> > call the factory, They ask me pay $500 for a matched pair!
> > Mr.Richard L.
> > Measures have mentioned in the list that 3-500Z can replace by
> > 4-400(need
> > some work),I have a pair 4-400C, but I just test them, they all
> > died!in
> > this weekend, I check my junk box, and find out some NOS Chinese
> > FU-500Fs(same as 4X500A) and its socket, I just read its
> > datasheets , I
> > found the screen and grid dissipation power not too small, so,I
> > think maybe
> > it can work in GG and cathode drive.It have same volt and cureent of
> > filament as 3-500Z.
> >> 73! Hsu
> >>
> >>
> >> ----- Original Message -----
> >> From: "Peter Chadwick" <g3rzp@g3rzp.wanadoo.co.uk>
> >> To: "Hsu" <Jbenson@sohu.co>; <amps@contesting.com>
> >> Sent: Sunday, July 23, 2006 7:14 PM
> >> Subject: Re: [Amps] 3-500Z convertion
> >>
> >>
> >>> Hsu said:
> >>>> My TL922's 3-500Zs died,I have some 4X500As,it seems the 3-500Z can
> > convertion by 4X500A, <
> >>> The 4X500A is an external anode tube, so the cooling won't be
> >>> right, it
> > needs a different socket, and it's a tetrode. You'd need to do soem
> > careful
> > calculation to determine if the grid and screen dissipations would be
> > exceeded. All in all, i'd say buyin a pair of new 3-500Z is a
> > better way to
> > o.
> >>> 73
> >>> Peter G3RZP
> >>>
> >>>
> >>>
> >>>
> >>>
> >>> ========================================
> >>> Message Received: Jul 23 2006, 11:54 AM
> >>> From: "Hsu"
> >>> To: amps@contesting.com
> >>> Cc:
> >>> Subject: [Amps] 3-500Z convertion
> >>>
> >>> Hi, I'm a new member.My TL922's 3-500Zs died,I have some 4X500As,it
> > seems the 3-500Z can convertion by 4X500A, Does anyone have this
> > experience?Thanks in advance!
> >>> 73! Hsu
> >>> _______________________________________________
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> >>> Amps@contesting.com
> >>> http://lists.contesting.com/mailman/listinfo/amps
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> >>> Amps@contesting.com
> >>> http://lists.contesting.com/mailman/listinfo/amps
> >>>
> >> _______________________________________________
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> >
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> >
>
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