Elecraft

Just Wonderin'...

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Andy Cunningham-2

Just Wonderin'...

Guy's...

Santa came REAL early this year.. today I took delivery of the ARRL Handbook
2008 and the new version of the
Low Power Communications book by Rich Arnald.. It's gonna be a good one..!

Flickin' through the new Handbook I came across the article again for the
3CX1500D7 RF Linear Amplifer... the
Very same one that was featured on the front cover of last years handbook
with the write up inside also..

It got me thinkin...

Exactly HOW MUCH, would the tube or tubes for one of these beauties cost in
todays money..?? Also the base for the
Tube, HOW MUCH would that be..??

WHERE would one purchase such things.. (don't see any reference in the
article to places that may stock these)..

Indeed if the parts are expensive at todays prices ... is there an "older"
alternative that one could use in such
A "homebrew" project..??

Enquiring Minds Are REALLY INTERESTED in learnin..'

72's 73's [hidden email]

Andy
GM0NWI

Elecraft K2 "Fully Loaded" QRP S/n 01432
Elecraft K2 "Fully Loaded" QRO S/n 05469

No virus found in this outgoing message.
Checked by AVG Free Edition.
Version: 7.5.488 / Virus Database: 269.15.3/1081 - Release Date: 19/10/2007
17:41

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Ed Lambert-3

RE: Just Wonderin'...

I priced the tube about 1 1/2 years ago. Contact EIMAC sales. I believe
their quote was on the order of $600 - $700.

Ed
KD3Y

> -----Original Message-----
> From: [hidden email] [mailto:elecraft-
> [hidden email]] On Behalf Of Andy - GM0NWI
> Sent: Saturday, October 20, 2007 1:20 PM
> To: 'Elecraft Discussion List'
> Subject: [Elecraft] Just Wonderin'...
>
> Guy's...
>
> Santa came REAL early this year.. today I took delivery of the ARRL
> Handbook
> 2008 and the new version of the
> Low Power Communications book by Rich Arnald.. It's gonna be a good one..!
>
> Flickin' through the new Handbook I came across the article again for the
> 3CX1500D7 RF Linear Amplifer... the
> Very same one that was featured on the front cover of last years handbook
> with the write up inside also..
>
> It got me thinkin...
>
> Exactly HOW MUCH, would the tube or tubes for one of these beauties cost
> in
> todays money..?? Also the base for the
> Tube, HOW MUCH would that be..??
>
> WHERE would one purchase such things.. (don't see any reference in the
> article to places that may stock these)..
>
> Indeed if the parts are expensive at todays prices ... is there an "older"
> alternative that one could use in such
> A "homebrew" project..??
>
> Enquiring Minds Are REALLY INTERESTED in learnin..'
>
>
> 72's 73's
> [hidden email]
>
> Andy
> GM0NWI
>
> Elecraft K2 "Fully Loaded" QRP S/n 01432
> Elecraft K2 "Fully Loaded" QRO S/n 05469
>
>
>
>
> No virus found in this outgoing message.
> Checked by AVG Free Edition.
> Version: 7.5.488 / Virus Database: 269.15.3/1081 - Release Date:
> 19/10/2007
> 17:41
>
>
> _______________________________________________
> Elecraft mailing list
> Post to: [hidden email]
> You must be a subscriber to post to the list.
> Subscriber Info (Addr. Change, sub, unsub etc.):
> http://mailman.qth.net/mailman/listinfo/elecraft
>
> Help: http://mailman.qth.net/subscribers.htm
> Elecraft web page: http://www.elecraft.com

Ed Lambert-3

RE: Just Wonderin'...

In reply to this post by Andy Cunningham-2

Also be sure to carefully check the schematic; the one in the 2007 Handbook
contained many, many errors.

Ed
KD3Y

w6jd

Re: Just Wonderin'...

In reply to this post by Andy Cunningham-2

The latest price I see for an 8877/3CX1500, from Alpha, is $950.00. You don't
want to smoke one of those puppies!

Doug, W6JD

-------------- Original message --------------
From: "Andy - GM0NWI" <[hidden email]>

> Guy's...
>
> Santa came REAL early this year.. today I took delivery of the ARRL Handbook
> 2008 and the new version of the
> Low Power Communications book by Rich Arnald.. It's gonna be a good one..!
>
> Flickin' through the new Handbook I came across the article again for the
> 3CX1500D7 RF Linear Amplifer... the
> Very same one that was featured on the front cover of last years handbook
> with the write up inside also..
>
> It got me thinkin...
>
> Exactly HOW MUCH, would the tube or tubes for one of these beauties cost in
> todays money..?? Also the base for the
> Tube, HOW MUCH would that be..??
>
> WHERE would one purchase such things.. (don't see any reference in the
> article to places that may stock these)..
>
> Indeed if the parts are expensive at todays prices ... is there an "older"
> alternative that one could use in such
> A "homebrew" project..??
>
> Enquiring Minds Are REALLY INTERESTED in learnin..'
>
>
> 72's 73's [hidden email]
>
> Andy
> GM0NWI
>
> Elecraft K2 "Fully Loaded" QRP S/n 01432
> Elecraft K2 "Fully Loaded" QRO S/n 05469
>
>
>
>
> No virus found in this outgoing message.
> Checked by AVG Free Edition.
> Version: 7.5.488 / Virus Database: 269.15.3/1081 - Release Date: 19/10/2007
> 17:41
>
>
> _______________________________________________
> Elecraft mailing list
> Post to: [hidden email]
> You must be a subscriber to post to the list.
> Subscriber Info (Addr. Change, sub, unsub etc.):
> http://mailman.qth.net/mailman/listinfo/elecraft
>
> Help: http://mailman.qth.net/subscribers.htm
> Elecraft web page: http://www.elecraft.com

Robert Dorchuck W6VY

Re: Just Wonderin'...

Last I heard the 3CX1500D7 (not an 8877) was only available
to hams directly from Eimac. This is a different animal than
the 8877.
Bob W6VY

--- [hidden email] wrote:

> The latest price I see for an 8877/3CX1500, from Alpha, is $950.00.
> You don't
> want to smoke one of those puppies!
>
> Doug, W6JD
>
> -------------- Original message --------------
> From: "Andy - GM0NWI" <[hidden email]>
>
> > Guy's...
> >
> > Santa came REAL early this year.. today I took delivery of the ARRL
> Handbook
> > 2008 and the new version of the
> > Low Power Communications book by Rich Arnald.. It's gonna be a good
> one..!
> >
> > Flickin' through the new Handbook I came across the article again
> for the
> > 3CX1500D7 RF Linear Amplifer... the
>

peter gerba

RE: Just Wonderin'...

In reply to this post by w6jd

Hi;

40-50 ma of grid current should get you about 1500 W out. Don't over drive
the tube and it will last for years and years.

Eimac tests the 8877 key down at 30 MHz , 3kw for hours before it's sold.

It's a very good tube.

pete, kn6bi

-----Original Message-----
From: [hidden email]
[mailto:[hidden email]]On Behalf Of [hidden email]
Sent: Saturday, October 20, 2007 1:06 PM
To: Andy - GM0NWI; 'Elecraft Discussion List'
Subject: Re: [Elecraft] Just Wonderin'...

The latest price I see for an 8877/3CX1500, from Alpha, is $950.00. You
don't
want to smoke one of those puppies!

Doug, W6JD

-------------- Original message --------------
From: "Andy - GM0NWI" <[hidden email]>

> Guy's...
>
> Santa came REAL early this year.. today I took delivery of the ARRL
Handbook

> 2008 and the new version of the
> Low Power Communications book by Rich Arnald.. It's gonna be a good one..!
>
> Flickin' through the new Handbook I came across the article again for the
> 3CX1500D7 RF Linear Amplifer... the
> Very same one that was featured on the front cover of last years handbook
> with the write up inside also..
>
> It got me thinkin...
>
> Exactly HOW MUCH, would the tube or tubes for one of these beauties cost

> todays money..?? Also the base for the
> Tube, HOW MUCH would that be..??
>
> WHERE would one purchase such things.. (don't see any reference in the
> article to places that may stock these)..
>
> Indeed if the parts are expensive at todays prices ... is there an "older"
> alternative that one could use in such
> A "homebrew" project..??
>
> Enquiring Minds Are REALLY INTERESTED in learnin..'
>
>
> 72's 73's [hidden email]
>
> Andy
> GM0NWI
>
> Elecraft K2 "Fully Loaded" QRP S/n 01432
> Elecraft K2 "Fully Loaded" QRO S/n 05469
>
>
>
>
> No virus found in this outgoing message.
> Checked by AVG Free Edition.
> Version: 7.5.488 / Virus Database: 269.15.3/1081 - Release Date:

19/10/2007

> 17:41
>
>
> _______________________________________________
> Elecraft mailing list
> Post to: [hidden email]
> You must be a subscriber to post to the list.
> Subscriber Info (Addr. Change, sub, unsub etc.):
> http://mailman.qth.net/mailman/listinfo/elecraft
>
> Help: http://mailman.qth.net/subscribers.htm
> Elecraft web page: http://www.elecraft.com

_______________________________________________
Elecraft mailing list
Post to: [hidden email]
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_______________________________________________
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rrkrr-2

Re: Just Wonderin'...

In reply to this post by Robert Dorchuck W6VY

Eimac is a division of CPII (Communications and Power Industries,
Inc.). Richardson Electronics is one of the primary distributors of new
Eimac products. These tubes can last a lifetime in Amateur service if
treated with respect. I don't know about this particular tube, but
there is a considerable market in used power tetrodes on the web. You
can sometimes get a kW level power tetrode with half its service life
left for a couple of hundred $.

Bob K4ERR

Robert Dorchuck W6VY wrote:

> Last I heard the 3CX1500D7 (not an 8877) was only available
> to hams directly from Eimac. This is a different animal than
> the 8877.
> Bob W6VY
>
> --- [hidden email] wrote:
>
>
>> The latest price I see for an 8877/3CX1500, from Alpha, is $950.00.
>> You don't
>> want to smoke one of those puppies!
>>
>> Doug, W6JD
>>
>> -------------- Original message --------------
>> From: "Andy - GM0NWI" <[hidden email]>
>>
>>
>>> Guy's...
>>>
>>> Santa came REAL early this year.. today I took delivery of the ARRL
>>>
>> Handbook
>>
>>> 2008 and the new version of the
>>> Low Power Communications book by Rich Arnald.. It's gonna be a good
>>>
>> one..!
>>
>>> Flickin' through the new Handbook I came across the article again
>>>
>> for the
>>
>>> 3CX1500D7 RF Linear Amplifer... the
>>>
> _______________________________________________
> Elecraft mailing list
> Post to: [hidden email]
> You must be a subscriber to post to the list.
> Subscriber Info (Addr. Change, sub, unsub etc.):
> http://mailman.qth.net/mailman/listinfo/elecraft
>
> Help: http://mailman.qth.net/subscribers.htm
> Elecraft web page: http://www.elecraft.com
>
>

peter gerba

RE: Just Wonderin'...

Hi Bob;

That's correct, the 3CX1500A7 and D7 are completely different tubes. My
remarks were from experience with the 3CX1500A7, the 8877. I don't know
anything about the D7. If the tube is a 3CX, then it's a Triode (unless the
coding has changed).

If you're interested, you might have a look on the Eimac WEB Site. I think
it's kept current.

CPI and Eimac/Varian have business offices in Palo Alto, CA.

Richardson is not the only vendor for the 8877. I don't know about the D7.

pete, kn6bi

-----Original Message-----
From: [hidden email]
[mailto:[hidden email]]On Behalf Of rrkrr
Sent: Saturday, October 20, 2007 3:12 PM
To: Robert Dorchuck W6VY
Cc: [hidden email]
Subject: Re: [Elecraft] Just Wonderin'...

Eimac is a division of CPII (Communications and Power Industries,
Inc.). Richardson Electronics is one of the primary distributors of new
Eimac products. These tubes can last a lifetime in Amateur service if
treated with respect. I don't know about this particular tube, but
there is a considerable market in used power tetrodes on the web. You
can sometimes get a kW level power tetrode with half its service life
left for a couple of hundred $.

Bob K4ERR

Robert Dorchuck W6VY wrote:

John A. Ross [Ecraft]

RE: Just Wonderin'...

In reply to this post by Andy Cunningham-2

Andy

Are you happier now that you have seen some new 3CX... and 8877 with nice
eimac bases and funnels in the flesh???

When will we see that amplifier of yours built ??

hihi

John

> -----Original Message-----
> From: [hidden email]
> [mailto:[hidden email]] On Behalf Of Andy - GM0NWI
> Sent: Saturday, October 20, 2007 6:20 PM
> To: 'Elecraft Discussion List'
> Subject: [Elecraft] Just Wonderin'...
>
> Guy's...
>
> Santa came REAL early this year.. today I took delivery of
> the ARRL Handbook
> 2008 and the new version of the
> Low Power Communications book by Rich Arnald.. It's gonna be
> a good one..!
>
> Flickin' through the new Handbook I came across the article
> again for the
> 3CX1500D7 RF Linear Amplifer... the
> Very same one that was featured on the front cover of last
> years handbook with the write up inside also..
>
> It got me thinkin...
>
> Exactly HOW MUCH, would the tube or tubes for one of these
> beauties cost in todays money..?? Also the base for the
> Tube, HOW MUCH would that be..??
>
> WHERE would one purchase such things.. (don't see any
> reference in the article to places that may stock these)..
>
> Indeed if the parts are expensive at todays prices ... is
> there an "older"
> alternative that one could use in such
> A "homebrew" project..??
>
> Enquiring Minds Are REALLY INTERESTED in learnin..'
>
>
> 72's 73's
> [hidden email]
>
> Andy
> GM0NWI
>
> Elecraft K2 "Fully Loaded" QRP S/n 01432 Elecraft K2 "Fully
> Loaded" QRO S/n 05469
>
>
>
>
> No virus found in this outgoing message.
> Checked by AVG Free Edition.
> Version: 7.5.488 / Virus Database: 269.15.3/1081 - Release
> Date: 19/10/2007
> 17:41
>
>
> _______________________________________________
> Elecraft mailing list
> Post to: [hidden email]
> You must be a subscriber to post to the list.
> Subscriber Info (Addr. Change, sub, unsub etc.):
> http://mailman.qth.net/mailman/listinfo/elecraft
>
> Help: http://mailman.qth.net/subscribers.htm
> Elecraft web page: http://www.elecraft.com
>

John A. Ross [Ecraft]

RE: Just Wonderin'...

> -----Original Message-----
> From: Peter Howson [mailto:[hidden email]]
> Sent: Monday, October 22, 2007 12:12 AM
> To: John A. Ross [Ecraft]
> Subject: Re: [Elecraft] Just Wonderin'...
>
> John
>
> Well he is not stuck for a box to put it in !!
>

Peter

Yip cool chassis.

He would only be stuck for something to drive it with when finished (without
an ICOM badge on it anyway ;-) )

Apologies to all for the OT humour

BR, John

> ----- Original Message -----
> From: "John A. Ross [Ecraft]" <[hidden email]>
> To: "'Elecraft Discussion List'" <[hidden email]>
> Sent: Sunday, October 21, 2007 9:53 PM
> Subject: RE: [Elecraft] Just Wonderin'...
>
>
> > Andy
> >
> > Are you happier now that you have seen some new 3CX... and
> 8877 with nice
> > eimac bases and funnels in the flesh???
> >
> > When will we see that amplifier of yours built ??
> >
> > hihi
> >
> > John
> >
> >
> >
> >> -----Original Message-----
> >> From: [hidden email]
> >> [mailto:[hidden email]] On Behalf Of
> Andy - GM0NWI
> >> Sent: Saturday, October 20, 2007 6:20 PM
> >> To: 'Elecraft Discussion List'
> >> Subject: [Elecraft] Just Wonderin'...
> >>
> >> Guy's...
> >>
> >> Santa came REAL early this year.. today I took delivery of
> >> the ARRL Handbook
> >> 2008 and the new version of the
> >> Low Power Communications book by Rich Arnald.. It's gonna be
> >> a good one..!
> >>
> >> Flickin' through the new Handbook I came across the article
> >> again for the
> >> 3CX1500D7 RF Linear Amplifer... the
> >> Very same one that was featured on the front cover of last
> >> years handbook with the write up inside also..
> >>
> >> It got me thinkin...
> >>
> >> Exactly HOW MUCH, would the tube or tubes for one of these
> >> beauties cost in todays money..?? Also the base for the
> >> Tube, HOW MUCH would that be..??
> >>
> >> WHERE would one purchase such things.. (don't see any
> >> reference in the article to places that may stock these)..
> >>
> >> Indeed if the parts are expensive at todays prices ... is
> >> there an "older"
> >> alternative that one could use in such
> >> A "homebrew" project..??
> >>
> >> Enquiring Minds Are REALLY INTERESTED in learnin..'
> >>
> >>
> >> 72's 73's
> >> [hidden email]
> >>
> >> Andy
> >> GM0NWI
> >>
> >> Elecraft K2 "Fully Loaded" QRP S/n 01432 Elecraft K2 "Fully
> >> Loaded" QRO S/n 05469
> >>
> >>
> >>
> >>
> >> No virus found in this outgoing message.
> >> Checked by AVG Free Edition.
> >> Version: 7.5.488 / Virus Database: 269.15.3/1081 - Release
> >> Date: 19/10/2007
> >> 17:41
> >>
> >>
> >> _______________________________________________
> >> Elecraft mailing list
> >> Post to: [hidden email]
> >> You must be a subscriber to post to the list.
> >> Subscriber Info (Addr. Change, sub, unsub etc.):
> >> http://mailman.qth.net/mailman/listinfo/elecraft
> >>
> >> Help: http://mailman.qth.net/subscribers.htm
> >> Elecraft web page: http://www.elecraft.com
> >>
> >
> > _______________________________________________
> > Elecraft mailing list
> > Post to: [hidden email]
> > You must be a subscriber to post to the list.
> > Subscriber Info (Addr. Change, sub, unsub etc.):
> > http://mailman.qth.net/mailman/listinfo/elecraft
> >
> > Help: http://mailman.qth.net/subscribers.htm
> > Elecraft web page: http://www.elecraft.com
> >
>