Re: Censorship/Administrator

FRANCIS CARCIA

I just hope we don't spend 3 weeks deciding which size wire to run to the shack.

That one sent me running away.

bill_w4zv wrote:

--- In ham_amplifiers@yahoogroups.com, "Pete Smith" wrote:

> I run a local community affairs mailing list with only two rules - sign
> your real name and maintain basic civility - keep it substantive, not
> personal.

I agree Pete, although I also maintain strict topic focus on the
Topband reflector.

AG6K wrote:
>I was booted off of AMPS by W8JI, Charles Thomas Rauch, Jr.

This list is off to a great start with a lie. I know who the
moderator is also and confirm it's not W8JI (...or me).

73, Bill

issues

Martin AA6E

#40

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.  If we really want to support ham amplifier work, this stuff is counterproductive.  Let's take our flames back to the NNTP world.

I am giving the Yahoo group a try, because I think the anonymous moderation and "appropriate use" policies of the other list were very worrisome.

I hope I don't have to unsubscribe from both of these groups!

73 Martin AA6E

New Group

#41

I am very happy we have found a new unmoderated home. Recent posts on
the old group have been boaring to say the least.

Welcome to all and lets continue to have free and meaningful
discussions on this great topic!


John Coupe
WA3BXH

Re: Censorship/Administrator

Dino Darling

#42

My guess is that Pete won't get banned from here, if that was what he was implying.  If he chooses not to post here, it will be of his own free will.  at least, this is my understanding of policy on this new and improved list.

I wonder who else has been banned from the other list in the past week...

At 04:45 AM 9/20/2006, you wrote:

This may be my first and last post on this list, but I wanted to clear
a few misconceptions:Dino - K6RIX
dino@... 


-- 
No virus found in this outgoing message.
Checked by AVG Anti-Virus.
Version: 7.1.405 / Virus Database: 268.12.5/451 - Release Date: 9/19/2006

Re: Censorship/Administrator

Pete Smith

#43

And what's the alternative?  I should "out" him?  That's not my prerogative, either.

I have been a member of amps since its inception, and while I disagree with prior restraint of speech, I think its series of moderators have acted with great self-control in the face of extraordinary provocation.  I believe the previous moderator resigned at least in part because of the private vitriol directed at him.

I'm done now - if you guys are going to run an amps reflector, talk amps.

73, Pete N4ZR

Show quoted text

At 11:45 AM 9/20/2006, Mike(W5UC) & Kathy(K5MWH) wrote:
Pete, I guess you do what you think you must do, BUT, I have a lot of trouble with the idea that someone operates an “open” forum and feels the need to hide.  That concept really bothers me.  I post my name and callsign every time I post to a reflector, and I am very suspicious about the intentions of someone who feels the need to hide in the shadows.

73,
Mike, W5UC

<>

----------
From: ham_amplifiers@... [mailto:ham_amplifiers@...] On Behalf Of Pete Smith
Sent: Wednesday, September 20, 2006 9:26 AM
To: ham_amplifiers@...
Subject: Re: [ham_amplifiers] Censorship/Administrator


I am going to respect his anonymity.

73, Pete N4ZR

At 08:32 AM 9/20/2006, Jan Erik Holm wrote:
OK it isn?t W8JI, who is it?

73 SM2EKM
--------------------------------------
Pete Smith wrote:
This may be my first and last post on this list, but I wanted to clear
a few misconceptions:

Tom Rausch is not the Admin of Amps. I'm not either ;^)

W4AN was not a fan of free speech - 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.

I run a local community affairs mailing list with only two rules - sign
your real name and maintain basic civility - keep it substantive, not
personal. In 6 years, I've had to ban one person for a week. A
parallel list has no such rules, and has disintegrated into ugly name-
calling.

From what I have read, such a regime on amps would have worked prettywell, though the Admin would have had to ban a few people.

73, Pete Smith N4ZR



Yahoo! Groups Links

New poll for ham_amplifiers

[email protected]

#46

Enter your vote today!  A new poll has been created for the 
ham_amplifiers group:

what is the output power capability of your HF power amplifier.
(obviously we never exeed our legal limit) 

  o < 2 kW 
  o 3 kW 
  o 6 kW 
  o 12 kW 
  o > 15 kW 


To vote, please visit the following web page:
 

Note: Please do not reply to this message. Poll votes are 
not collected via email. To vote, you must go to the Yahoo! Groups 
web site listed above.

Thanks!

Re: Panasonic/Matsushita Switcher HV-PS u-Wave Oven

Dick

#47

Very interesting Rich.
What would be the regulation of this switched mode power supply?
Cheers, Dick

--- In ham_amplifiers@..., R L Measures <r@...> wrote:

I purchased one unit from Costco. The price was $99.  The unit was
surprisingly light in weight compared to my old transformer-powered
400W u-wave oven.   I found no RFI problem from 50 - 550 MHz.  The
rating is 1300w, which is most probably the DC input power to the
magnetron.  At 120V, c. 17A of current is drawn.  If a SSB amateur 
radio amplifier was built using the Matsushita switcher PS, twounits 
are probably needed.  By putting the 120V inputs to the twoswitcher  
supplies in series, operation from a standard, 240VCT, 20A outlet
would work.  I have not yet disassembled the oven to measure theHV.
Does anyone know what's the typical range of potentials used topower
magnetrons of this size?  tnx

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

other amplifier groups

#49

Other yahoo amplifier groups

Re: New poll for ham_amplifiers

FRANCIS CARCIA

#48

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

ham_amplifiers@... wrote:

Show quoted text

Enter your vote today! A new poll has been created for the
ham_amplifiers group:

what is the output power capability of your HF power amplifier.
(obviously we never exeed our legal limit)

o < 2 kW
o 3 kW
o 6 kW
o 12 kW
o > 15 kW

To vote, please visit the following web page:

Note: Please do not reply to this message. Poll votes are
not collected via email. To vote, you must go to the Yahoo! Groups
web site listed above.

Thanks!

Re: New Group

FRANCIS CARCIA

#53

man you got that right? John.....all that useless mail. The one on wiring back to the breaker panel that went on for ever sent me a runnin. my $50,000 alpha won't work?

jcoupejr wrote:

Show quoted text

I am very happy we have found a new unmoderated home. Recent posts on
the old group have been boaring to say the least.

Welcome to all and lets continue to have free and meaningful
discussions on this great topic!

John Coupe
WA3BXH

Re: Panasonic/Matsushita Switcher HV-PS u-Wave Oven

#52

Dave Smith VK3HZ did some ivvesigation of these, with interesting findings at:

www.users.bigpond.net.au/dwsmith/hv_inverter.pdf

Roger

Show quoted text

----- Original Message ----- 
From: "Dick" <pa3duv@...>
To: <ham_amplifiers@...>
Sent: Wednesday, September 20, 2006 9:33 PM
Subject: [ham_amplifiers] Re: Panasonic/Matsushita Switcher HV-PS u-Wave Oven

Very interesting Rich.
What would be the regulation of this switched mode power supply?
Cheers, Dick

--- In ham_amplifiers@..., R L Measures <r@...> wrote:

I purchased one unit from Costco. The price was $99.  The unit was
surprisingly light in weight compared to my old transformer-powered
400W u-wave oven.   I found no RFI problem from 50 - 550 MHz.  The
rating is 1300w, which is most probably the DC input power to the
magnetron.  At 120V, c. 17A of current is drawn.  If a SSB amateur
radio amplifier was built using the Matsushita switcher PS, twounits
are probably needed.  By putting the 120V inputs to the twoswitcher
supplies in series, operation from a standard, 240VCT, 20A outlet
would work.  I have not yet disassembled the oven to measure theHV.
Does anyone know what's the typical range of potentials used topower
magnetrons of this size?  tnx

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

Yahoo! Groups Links

Top band Reflector

Mike$W5UC$ & Kathy$K5MWH$

#50

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

Re: New poll for ham_amplifiers

Mike Sawyer

#51

开云体育

Frank,

??? I thought I took all your 4-1000's ;>) Welcome to the new group.

Mod-U-Lator,
Mike(y)
W3SLK

Show quoted text

----- Original Message -----

From: FRANCIS CARCIA

To: ham_amplifiers@...

Sent: Wednesday, September 20, 2006 5:32 PM

Subject: Re: [ham_amplifiers] New poll for ham_amplifiers

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

ham_amplifiers@yahoogroups.com wrote:

Enter your vote today! A new poll has been created for the
ham_amplifiers group:

what is the output power capability of your HF power amplifier.
(obviously we never exeed our legal limit)

o < 2 kW
o 3 kW
o 6 kW
o 12 kW
o > 15 kW

To vote, please visit the following web page:

Note: Please do not reply to this message. Poll votes are
not collected via email. To vote, you must go to the Yahoo! Groups
web site listed above.

Thanks!

Re: [-] Re: Re: Panasonic/Matsushita Switcher HV-PS u-Wave Oven

Paul Playford

#54

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

de Paul, W8AEF

Show quoted text

----- Original Message ----- 
From: "Roger Glover" <r.glover@...>
To: <ham_amplifiers@...>
Sent: Wednesday, September 20, 2006 2:39 PM
Subject: [-] Re: [ham_amplifiers] Re: Panasonic/Matsushita Switcher HV-PS u-Wave Oven

Dave Smith VK3HZ did some ivvesigation of these, with interesting findings
at:

www.users.bigpond.net.au/dwsmith/hv_inverter.pdf

Roger

----- Original Message ----- 
From: "Dick" <pa3duv@...>
To: <ham_amplifiers@...>
Sent: Wednesday, September 20, 2006 9:33 PM
Subject: [ham_amplifiers] Re: Panasonic/Matsushita Switcher HV-PS u-Wave
Oven

Very interesting Rich.
What would be the regulation of this switched mode power supply?
Cheers, Dick

--- In ham_amplifiers@..., R L Measures <r@...> wrote:

I purchased one unit from Costco. The price was $99.  The unit was
surprisingly light in weight compared to my old transformer-powered
400W u-wave oven.   I found no RFI problem from 50 - 550 MHz.  The
rating is 1300w, which is most probably the DC input power to the
magnetron.  At 120V, c. 17A of current is drawn.  If a SSB amateur
radio amplifier was built using the Matsushita switcher PS, twounits
are probably needed.  By putting the 120V inputs to the twoswitcher
supplies in series, operation from a standard, 240VCT, 20A outlet
would work.  I have not yet disassembled the oven to measure theHV.
Does anyone know what's the typical range of potentials used topower
magnetrons of this size?  tnx

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

Re: About 4-1000 family

pentalab

#55

--- In ham_amplifiers@..., "David C. Hallam"
<dhallam@...> wrote:

Guillermo,

The PR version of the 4-1000A stands for pulse rated and simplymeans the
internal structure will handle very high current on a intermittentbasis.
Others may give you a different take on the idle current, but nothaving a
copy of that handbook I would think that is for 2 tubes.  ZSAC (zero signal
anode current) for AB1/AB2 is generally adjusted to give about 1/2of the
rated dissipation of the tube(s).###  The  PR  version  will handle  sky high plate  voltages...
like 10-30  KV.

###  In GG...  with  around  7 v  of  zener  bias.... and 4800V... I
was seeing  around  70 Ma  ZSAC.   [single  tube]

###  A  small  SPST  CENTER  OFF  toggle  switch  and  a string  of
diodes  will  provide  3  x bias  positions..... and a rotary
switch  is  the ultimate  set up.     I also found that the  vdrop
across the  string of  either  1N5408's  or 6A1O's [ 1 kv - 6 A..
400 A  surge] diodes  increases  from  aprx  .7 V  to  almost  .8 V
when  current  thru em increases  from  200 ma  to 2 A.

###  I installed  7 x  1000 uf  lytics  in parallel [7000 uf]
across the  entire  mess of  diodes...... resulted in superb  bias
regulation.   Just beware... the  wire leads  from the  diodes IS
the  heatsink  for the diodes.   The  6 A  diodes  run  luke warm
with  2 A  CCS  thru  em.

Later... Jim  VE7RF



David
KC2JD

Re: Moderator

pentalab

#56

--- In ham_amplifiers@..., "w5uc" <w5uc@...> wrote:

There is something really wrong when the name of the moderator mustbe
kept a secret.  Looking forward to enjoying the new group.

73.
Mike, W5UC###  agreed !     This  new  group is  gonna  blow away the
old  'amps'  group.... hands  down... stay tuned.

Later... and greetings... from  Jim  VE7RF

Re: Censorship/Administrator

pentalab

#57

--- In ham_amplifiers@..., FRANCIS CARCIA <carcia@...>
wrote:

I just hope we don't spend 3 weeks deciding which size wire to runto the shack.
  That one sent me running away.###  I suggested  at least  2 ga  wire  to my buddy.  Turns out  it
shoulda  been  a heluva  lot bigger.... once we  determined the
peak  current on the  240 vac line.... every  8.3 msecs..... using
Duncans  amp  tools.   The  chief  culprit was the  input Z  of the
plate  xfmr  primary  [aprx  70 ohms]... and NOT the  
meassured  .08  ohm  Dc resistance.

###  To get  bigger  wire to  fit a 100 A breaker....  snip a few
strands  off the outer layer... and re-twist... fits like a glove.

Later... Jim  VE7RF

Re: New poll for ham_amplifiers

FRANCIS CARCIA

#58

Yup Mike,

They all went to Frank because?I have a box of 4CX3000As. They also work well in GG mode and have a bit more gain than the 4-1000A.? wa1gfz?

Mike Sawyer wrote:

Show quoted text

Frank,

??? I thought I took all your 4-1000's ;>) Welcome to the new group.

Mod-U-Lator,
Mike(y)
W3SLK

----- Original Message -----
From: FRANCIS CARCIA

To: ham_amplifiers@yahoogroups.com

Sent: Wednesday, September 20, 2006 5:32 PM

Subject: Re: [ham_amplifiers] New poll for ham_amplifiers

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

ham_amplifiers@yahoogroups.com wrote:

Enter your vote today! A new poll has been created for the
ham_amplifiers group:

what is the output power capability of your HF power amplifier.
(obviously we never exeed our legal limit)

o < 2 kW
o 3 kW
o 6 kW
o 12 kW
o > 15 kW

To vote, please visit the following web page:

Note: Please do not reply to this message. Poll votes are
not collected via email. To vote, you must go to the Yahoo! Groups
web site listed above.

Thanks!

Re: Panasonic/Matsushita Switcher HV-PS u-Wave Oven

#60

Tnx, PAUL.  Sounds like two Panasonic switcher supplies would run an  8877 om SSB.

On Sep 19, 2006, at 7:32 PM, w8aef wrote:

I found the following web page:

 appliance_magnetron_tube_
home.htm

de Paul, W8AEF

Does anyone know what's the typical range of potentials used topower
magnetrons of this size?  tnx

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

Yahoo! Groups Links

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

Re: New poll for ham_amplifiers

#59

In grid-driven service, the 4cx3000A has a power gain of c. 60x.


On Sep 20, 2006, at 4:51 PM, FRANCIS CARCIA wrote:

Yup Mike,
They all went to Frank because I have a box of 4CX3000As. They also  work well in GG mode and have a bit more gain than the 4-1000A.   wa1gfz

Mike Sawyer <w3slk@...> wrote:
Frank,
    I thought I took all your 4-1000's ;>) Welcome to the new group.
Mod-U-Lator,
Mike(y)
W3SLK
----- Original Message -----
From: FRANCIS CARCIA
To: ham_amplifiers@...
Sent: Wednesday, September 20, 2006 5:32 PM
Subject: Re: [ham_amplifiers] New poll for ham_amplifiers

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

ham_amplifiers@... wrote:

Enter your vote today! A new poll has been created for the
ham_amplifiers group:

what is the output power capability of your HF power amplifier.
(obviously we never exeed our legal limit)

o < 2 kW
o 3 kW
o 6 kW
o 12 kW
o > 15 kW

To vote, please visit the following web page:


Note: Please do not reply to this message. Poll votes are
not collected via email. To vote, you must go to the Yahoo! Groups
web site listed above.

Thanks!



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