Hey Doug, there are a number of people who most likely need to get it
out of their system. There is also some history explaining how we got
to this point. My guess is that this part of the discussion will blow
over in about a week. Let's be a bit more patient.

I have plans to build my first amplifier using a 4CX250B. I have the
tube, socket, enclosure, and some parts. Maybe we can build it right
here on the reflector! I'm looking forward to the education!

Dino - K6RIX
dino@...

On Sep 21, 2006, at 9:19 AM, Bill Turner wrote:

ORIGINAL MESSAGE:

On Wed, 20 Sep 2006 13:16:41 -0400, Martin AA6E
<aa6e@...> wrote:

Here's a simple request from one op who is interested in amps. Personal
grudge matches are bad news and will put off people who don't have any
ax to grind.

------------ REPLY FOLLOWS ------------

I agree 100%, but a distinction needs to be made between "personal
grudge matches" and a spirited debate.

A grudge match is when the party whose conclusion does not add up won't budge.

I too abhor the postings where each side simply calls the other names,
questions their parentage and generally reviles them any way they can.

I welcome ad hominems, expletives, yo' mamma insults and suggestions that I might be doing my helper girl since that usually indicates that the debate has concluded.

That is not the same as questioning the other's knowledge and
application of theory, conclusions drawn or recommendations made.
Those things SHOULD be questioned when appropriate and it often leads
to a heated atmosphere, which I don't mind at all since that usually
eventually leads to the truth.

Indeed. Bill

At the other end of the spectrum are posts which are so bland as to
generate no interest at all. Those also should be avoided like the
plague. Like most things in life, there is a balance to be found.

like "Which end of the soldering iron should I hold when soldering?"

73, Bill W6WRT



Yahoo! Groups Links

R L MEASURES, AG6K. 805-386-3734
r@...

--- In ham_amplifiers@..., "pentalab" <jim.thomson@...>
wrote:

Gents

On these 3CX-6000's and also the socketless version [ YC-

243],

I fool with from time to time, Eimac/ Svetlana state's the

grid

diss at 225 Watts CCS. [3CX-3000A7 is also 225 w CCS grid]

Now, since the tube(s) can be operated in either GG OR grid
driven.... it occured to me that in grid driven mode... the grid
should still has a 225 w CCS rating ???

The point here is..... in GG service... you bolt this huge grid
ring to the chassis.... and in the case of the socketless
version.... an even bigger diam grid flange is bolted to the
chassis !

Now... that alone should heatsink the grid ??? Since the

grid

is sitting in a vac... the only way for thermal heat to escape is
via the grid flange.

Since the below chassis compartment is pressurized... one might
think the actual grid dissipation can perhaps be increased

via

this heatsink action ?? [GG mode]

Am I out to lunch here ???

Later..... Jim VE7RF

### Did anybody actually read the above ???

Later.... Jim VE7RF

Gese, hasn't the censor thing run its course. When do we start
discussing amplifiers?

Doug

--- In ham_amplifiers@..., "RICHARD GEORGE" <k6kwq@...>
wrote:

It's also funny that when I asked on the amps reflector if Rich

had been kicked off, Tom wrote back to me the reasons he was kicked
off for, before it ever showed up on the reflector that he was gone.
The admin guy didn't answer me until the next day. If the admin guy
is not Tom, then he must be helping the admin guy censor.

### Now this just cracks me up !! Were the reasons that
Tom gave you.. identical to the "official" ones on the now
defunct ..'amps' ????

### I also noticed that once the dust settled... that W8JI is
back at it again...... posting left, right and center...
on 'amps' !!

### some poor fellow wants to build a hb tube amp.
Tom.. 'suggests' he build a 12 vdc SS device.

### If Tom Rauch is not the admin/censor of 'amps'..... then
he's certainly joined at the hip of whoever is... or has a huge
influence over the ...."mystery censor" .

### Rich tells me... that the mega mailing list is now defunct
on 'amps'. To me... that's the straw that broke the camels
back.

### IMO... 'amps' has just degenerated into a ... "Tom Rauch
knows everything soapbox/platform"


## In the past..... anybody who didn't have a callsign got
booted from 'amps'...... ditto with some very knowledeable
11m amp builders...... and also Carl, KM1H.... who was a wealth
of practical info.

### who ever designed the undersized tank coils in the AL-80B
was a complete idiot imo. The wire ga is the same size as
what's used in a 200 w Drake T4XC TX.

later.... Jim VE7RF

开云体育

Hello,

This email message is a notification to let you know that
a file has been uploaded to the Files area of the ham_amplifiers
group.

File : /DSCN6549.MOV
Uploaded by : pa3duv <pa3duv@...>
Description : Emtron phase controlled sofstarter test

You can access this file at the URL:


To learn more about file sharing for your group, please visit:


Regards,

pa3duv <pa3duv@...>

ORIGINAL MESSAGE:

On Wed, 20 Sep 2006 14:32:44 -0700 (PDT), FRANCIS CARCIA
<carcia@...> wrote:

Maybe we could change the pole to what size breaker can you trip.......I plea the fifth

------------ REPLY FOLLOWS ------------

In the last year my tower has taken two direct lightning strikes which
tripped a 30 amp breaker each time. Whoever is running that amp has my
vote. :-)

Bill, W6WRT

ORIGINAL MESSAGE:

On Wed, 20 Sep 2006 21:29:08 -0500, "Mike&#92;(W5UC&#92;) & Kathy&#92;(K5MWH&#92;)"
<w5uc@...> wrote:

I got so tired of the long term kicking of dead horses that I just started
going through my unread mail and automatically clicking AMPs mail as read
without opening it or looking at the subject.

------------ REPLY FOLLOWS ------------

With all due respect Mike, I think you are missing the importance of
these "month-long" debates.

In my view, whenever two highly intelligent and experienced engineers
can not agree on what seems to be a simple issue, there is something
to be learned by the rest of us. The longer the debate goes on (as
long as it stays polite) the more I learn.

Earlier this year there was such a debate on the Usenet antenna group
about current in a HF mobile loading coil. It was fascinating and I'm
glad I followed it. I don't think either side convinced the other, but
I learned a lot.

Keep it up, guys. :-)

Bill, W6WRT

ORIGINAL MESSAGE:

On Wed, 20 Sep 2006 17:16:37 -0700, R L Measures <r@...> wrote:

To thrive, like a TV soap opera, a discussion group needs a
protagonist and an antagonist. Tom and yours truly are such. Without
Tom, my guess is that there will be a lot less entertainment value.

------------ REPLY FOLLOWS ------------

Bingo.

Bill, W6WRT

ORIGINAL MESSAGE:

On Wed, 20 Sep 2006 13:16:41 -0400, Martin AA6E
<aa6e@...> wrote:

Here's a simple request from one op who is interested in amps. Personal
grudge matches are bad news and will put off people who don't have any
ax to grind.

------------ REPLY FOLLOWS ------------

I agree 100%, but a distinction needs to be made between "personal
grudge matches" and a spirited debate.

I too abhor the postings where each side simply calls the other names,
questions their parentage and generally reviles them any way they can.

That is not the same as questioning the other's knowledge and
application of theory, conclusions drawn or recommendations made.
Those things SHOULD be questioned when appropriate and it often leads
to a heated atmosphere, which I don't mind at all since that usually
eventually leads to the truth.

At the other end of the spectrum are posts which are so bland as to
generate no interest at all. Those also should be avoided like the
plague. Like most things in life, there is a balance to be found.

73, Bill W6WRT

Earlier today someone mentioned the top band reflector. I love 160 and can't
wait until the bands get quiet enough for it to be productive. However I
have a lot to learn about building some kinda receiving antenna that will
improve my reception. How do I find it?  

73,
Mike, W5UC




 
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Hal,

The softstarter in the Emtron amps is a phase control triac system, not a zero crosser. It allows gradually more of the primary AC sinewave into the powersupply. By doing so there is no need for a series resistor to limit the inrush current.
Although the series resistor current limiter is effective I consider the phase control system more gracious.

I have put a quicktime movieclip on
showing the softstarter power up a lightbulb.

Cheers, Dick
PA3DUV

On Sep 21, 2006, at 3:58 AM, Pete Smith wrote:

Perhaps the thread should be retitled "Irresponsible conjecture revealed."

Agreed.

cheerz

73 and QRT de N4ZR

.At 03:24 AM 9/21/2006, Jan Erik Holm wrote:

Bill Fisher W4AN committed suicide on April 4 2004.
You can read here:


73 Jim SM2EKM
--------------------------------------------------------------

R L Measures wrote:

W4AN was not a fan of free speech -

RE: W4AN & free speech: After Bill Fisher died at such a young age,
I tried to find out how it happened. I could find out nothing from
the County Coroner. Rumor was that there was an automobile accident,
that the car landed in water a considerable distance from the
highway, and that it happened near a drag-strip in Georgia. My guess
is that the Coroner's Report was suppressed because the toxicology
finding would have been an embarrassment.

he replaced me as Admin of
Towertalk when I refused to censor posts there; this is not a knock on
Bill, just a difference of philosophy.

Yahoo! Groups Links

Yahoo! Groups Links

R L MEASURES, AG6K. 805-386-3734
r@...

G'day, Alek. Be careful what you say here because there is no censor to protect us from shooting our mouths off. cheerz

On Sep 21, 2006, at 2:15 AM, Alek Petkovic wrote:

Yeah, and he's here now. G'day from downunder.

73, Alek
VK6APK

At 09:35 AM 21/09/2006, R L Measures wrote:

chortle

On Sep 20, 2006, at 2:06 AM, w5uc wrote:

The mesage got through anyway. VK6APK posted a respomse with the
announcement at the bottom and the censor missed it.

73,
Mike, W5UC







Yahoo! Groups Links

R L MEASURES, AG6K. 805-386-3734
r@...






Yahoo! Groups Links

Yahoo! Groups Links

R L MEASURES, AG6K. 805-386-3734
r@...

On Sep 21, 2006, at 12:24 AM, Jan Erik Holm wrote:

Bill Fisher W4AN committed suicide on April 4 2004.
You can read here:

Thanks, Jim. Was the story about him dying in a car crash true or just a coverup?

73 Jim SM2EKM
--------------------------------------------------------------

R L Measures wrote:

W4AN was not a fan of free speech -

RE: W4AN & free speech: After Bill Fisher died at such a young age,
I tried to find out how it happened. I could find out nothing from
the County Coroner. Rumor was that there was an automobile accident,
that the car landed in water a considerable distance from the
highway, and that it happened near a drag-strip in Georgia. My guess
is that the Coroner's Report was suppressed because the toxicology
finding would have been an embarrassment.

he replaced me as Admin of
Towertalk when I refused to censor posts there; this is not a knock on
Bill, just a difference of philosophy.

Yahoo! Groups Links

R L MEASURES, AG6K. 805-386-3734
r@...

On Sep 20, 2006, at 7:45 PM, Paul Playford wrote:

Beyond installing your ECBS and parasitic suppression kits in an SB-220 and
a Henry 2K-3 (both worked very well, thank you),

good news, tnx.

the most serious project I
have undertaken in the last 40 years is to take a perfectly good Alpha 76A
and install a pair of 3CX800A7's in it and modify it for QSK.

Why not?, it's a more capable tube.

Normally, my moto is "If it works, don't fix it." The 76A modification was
a serious violation of my moto.

My dot matrix printer worked - but now it's gone.

However, the thought of a light weight high voltage power supply for my
Alpha does have an appeal, especially when I would like to take it on
DXpeditions and international airlines are almost to the point of weighing
baggage by the ounce.

The only question is how to bring the output down to 2500vdc.

cheers, Paul

de Paul, W8AEF

----- Original Message -----
From: "R L Measures" <r@...>
To: <ham_amplifiers@...>
Sent: Wednesday, September 20, 2006 5:22 PM
Subject: Re: [-] Re: [ham_amplifiers] Re: Panasonic/Matsushita Switcher
HV-PS u-Wave Oven

On Sep 20, 2006, at 4:01 PM, Paul Playford wrote:

It is information like this that maintains my interest in amateur
radio.

Are you interested enough to build one?

My guess is that 6 of the Panasonic switchers would power an 8170 in
SSB-mode, especially if an energy-storage C bank was connected to the
output and the units were powered from a 50A electric range outlet.

Yahoo! Groups Links

R L MEASURES, AG6K. 805-386-3734
r@...

On Sep 20, 2006, at 7:29 PM, Mike((W5UC)) & Kathy((K5MWH)) wrote:

I got so tired of the long term kicking of dead horses that I just started going through my unread mail and automatically clicking AMPs mail as read without opening it or looking at the subject. I should have left long before I did. When I saw the announcement about this reflector, I joined it and unsubscribed to AMPS, then deleted all AMPS messages and the AMPS mailbox from my system. God knows that I enjoy a little fun & BS, but I was having trouble finding boots with high enough tops.

Mike -- In the Fall of 1996, when I accepted W8JI's challenge to debate him about parasites on the Internet on rec.amateur- radio.homebrew, I received an e-mail from a Ham in NYC advising me of Rauch's SOP during a debate. Examples: Bluster; bullying; the incredible word avalanche; use of lap-dogs to concur with his every utterance, and to nip at his opponent; and also never admitting to a technical misstep. In a nutshell: hubris.
The defense for word avalanches was to read as far as the first technical misstep, stop, delete the rest, concentrate on Rauch's misstep and hang on to it as long as possible before moving on. This procedure seemed to work and in less than two months the debate was pretty much over, or so I thought until I got word from Carl, KM1H, informing me that the Rauchian camp had a brand new playground - the AMPS reflector/mailing-list - and this time it had a moderator/censor to protect Tom. I subscribed to AMPS and within hours I received a telephone call from the moderatpr/censor informing me that I would not be allowed to do to Mr. Rauch what I had just done to him on rec.amateur-radio.homebrew. I found this statement amusing because the worst damage to Mr. Rauch had been done by N7WS' Hewlett-Packard Model 4191A RF Impedance Analyzer.
Editorial -- IMO, Mr. Rauch sincerely believes that a debate is not decided until one of the combatants Publically admits error. Thus, my guess is that Tom will never admit that Ni-Cr (resistance- wire) alloys do not have reverse skin-effect at HF, that VHF-resonant circuits can ring, and that the only reason to use resistance-wire in a R/L VHF suppressor is to increase its dissipative ability on 10m/ 12m - thereby reducing its Q & Rp at 100MHz Without toasting R-supp. Alas.

cheers, Mike

73,

Mike, W5UC





From: ham_amplifiers@... [mailto:ham_amplifiers@...] On Behalf Of R L Measures
Sent: Wednesday, September 20, 2006 9:13 PM
To: ham_amplifiers@...
Subject: Re: [ham_amplifiers] Re: Moderator




On Sep 20, 2006, at 5:26 PM, Mike((W5UC)) & Kathy((K5MWH)) wrote:

The absence of secret moderators is a blessing. Now if we can just
avoid month long discussions about the miniscule merits of harmonic
suppressors.

The are parasitic oscillation suppressors but no harmonic
suppressors. Did you avoid discussions about the latter?

Pentalabs wrote:


To thrive, like a TV soap opera, a discussion group needs a
protagonist and an antagonist. Tom and yours truly are such. Without
Tom, my guess is that there will be a lot less entertainment value.

R L MEASURES, AG6K. 805-386-3734
r@...

R L MEASURES, AG6K. 805-386-3734
r@...

开云体育

Earlier today someone mentioned the top band reflector. I love 160 and can't

wait until the bands get quiet enough for it to be productive. However I

have a lot to learn about building some kinda receiving antenna that will

improve my reception. How do I find it?? 

?

73,

Mike, W5UC

?

?

?

Yahoo! Groups Links

?

<*> To visit your group on the web, go to:

??? 

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<*> Your email settings:

??? Individual Email | Traditional

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<*> To change settings online go to:

??? 

??? (Yahoo! ID required)

?

<*> To change settings via email:

??? mailto:ham_amplifiers-digest@yahoogroups.com 

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??? ham_amplifiers-unsubscribe@yahoogroups.com

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<*> Your use of Yahoo! Groups is subject to:

??? 

?

?

?

?

Earlier today someone mentioned the top band reflector. I love 160 and can't
wait until the bands get quiet enough for it to be productive. However I
have a lot to learn about building some kinda receiving antenna that will
improve my reception. How do I find it?  

73,
Mike, W5UC




 
Yahoo! Groups Links

<*> To visit your group on the web, go to:
    

<*> Your email settings:
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<*> To change settings online go to:
    
    (Yahoo! ID required)

<*> To change settings via email:
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<*> To unsubscribe from this group, send an email to:
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