Re: Soldering Nichrome

Mike Sawyer

#20

开云体育

Thanks, Rich. I re-posted your response on the other forum board.

Mod-U-Lator,
Mike(y)
W3SLK

Show quoted text

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

From: R L Measures

To: ham_amplifiers@...

Sent: Sunday, September 17, 2006 10:21 AM

Subject: Re: [ham_amplifiers] Soldering Nichrome

Mikw -- Ni-Cr alloys can be soldered with 95%-Tin, 5%-silver
(plumbing) solder. The melting point is c. 221?C. J. W. Harris Sta-
Brite flux - which is made for soldering stainless steel alloys -
works well for soldering Ni-Cr. Before soldering, clean the oxides
off of the Ni-Cr with coarse steel wool or carbide paper. Apply drop
of silver solder to tip of iron, touch drop to the joint to be
soldered, remove iron, apply drop of flux. The flux will sizzle -
which activates the flux. Re-apply soldering iron and the joint
should suck in the drop of silver-solder. The flux residue should be
removed with running warm water and a toothbrush. If the iron is
temperature controlled, 600?F seems to work well since higher
temperatures break down the flux into useless brown goo.

On Sep 17, 2006, at 7:05 AM, Mike Sawyer wrote:

> This has some redeeming value, but on another bulletin board, the
> topic of using nichrome wire came up being used as a meter shunt.
> someone chimed in that you can't solder to nichrome wire. Another
> stated that you had to add enough solder to the joint to make it
> mechanically stable. I was under the impression that you had to use
> allot of heat, (like one of those large soldering irons you see in
> the bargain boxes below the flea market tables), due to the heat
> wicking properties of the wire. Am I correct in that assumption or
> only half correct?
> Mod-U-Lator,
> Mike(y)
> W3SLK
>

R L MEASURES, AG6K. 805-386-3734
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4-1000A correction

GGLL

#21

I re-read today the data given in the ARRL '97 handbook. The working condition as stated in the handbook does not mention the values are for two tubes; AB2 class amplifier with VA=4000V, VG2=500V, VG1=-60V and IP=300...1200 mA; output power of 3000 Watts. I guessed the idle current was high (exceeding actual plate dissipation) but reading the Eimac data sheet it states those same values but for two tubes, also tube's IP max=700 mA. A typo in the handbook.

Best regards
Guillermo - LU8EYW.

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

w8aef

#22

I found the following web page:

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@...

Re: Soldering Nichrome

craxd

#23

Mike,

No, the melting temperature raises when you use silver in a solder. 
The more silver, the higher the melting temperature. Some has to be
used at red hot brazing temperatures. Thus in order for it to flow and
bond, it has to be at the correct temperature to do it.

Best,

Will

--- In ham_amplifiers@..., "Mike Sawyer" <w3slk@...>
wrote:

This has some redeeming value, but on another bulletin board, thetopic of using nichrome wire came up being used as a meter shunt.
someone chimed in that you can't solder to nichrome wire. Another
stated that you had to add enough solder to the joint to make it
mechanically stable. I was under the impression that you had to use
allot of heat, (like one of those large soldering irons you see in the
bargain boxes below the flea market tables), due to the heat wicking
properties of the wire. Am I correct in that assumption or only half
correct?
Mod-U-Lator,
Mike(y)
W3SLK

Re: Soldering Nichrome

craxd

#24

Mike,

No, the melting temperature raises when you use silver in a solder. 
The more silver, the higher the melting temperature. Some has to be
used at red hot brazing temperatures. Thus in order for it to flow and
bond, it has to be at the correct temperature to do it.

Best,

Will

--- In ham_amplifiers@..., "Mike Sawyer" <w3slk@...>
wrote:

This has some redeeming value, but on another bulletin board, thetopic of using nichrome wire came up being used as a meter shunt.
someone chimed in that you can't solder to nichrome wire. Another
stated that you had to add enough solder to the joint to make it
mechanically stable. I was under the impression that you had to use
allot of heat, (like one of those large soldering irons you see in the
bargain boxes below the flea market tables), due to the heat wicking
properties of the wire. Am I correct in that assumption or only half
correct?
Mod-U-Lator,
Mike(y)
W3SLK

new list

#25

Thanks to W3SLK for the info, it finaly made the
old amps-list.

I was sorry to see what happened over at the old list,
personally I hate censorship no matter what it is.

For years I have been wounder who the moderator was at
the amps-list, I know now, guess I should have figured
it out.

73 Jim SM2EKM

New Group

w5uc

#26

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

73,
Mike, W5UC

Moderator

w5uc

#27

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

73.
Mike, W5UC

Who is?

w5uc

#28

Apparently the discusion got squashed on the other reflector. SO, who
is Jack Gerritsen?

73,
Mike, W5UC

Re: Who is?

#29

It didnt, atleast I read answers. Please, instead use
Google and lets keep it to amplifiers and related things
on this list.

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

w5uc wrote:

Show quoted text

Apparently the discusion got squashed on the other reflector. SO, who is Jack Gerritsen?
73,
Mike, W5UC

Re: Moderator

GGLL

#30

Agreed 100%.

Best regards
Guillermo - LU8EYW.

w5uc escribi:

Show quoted text

There is something really wrong when the name of the moderator must be kept a secret.  Looking forward to enjoying the new group.
73.
Mike, W5UC

Re: new list

GGLL

#32

Jan Erik Holm escribi:
Thanks to W3SLK for the info, it finaly made the
old amps-list.
I was sorry to see what happened over at the old list,
personally I hate censorship no matter what it is.	I sent a message there announcing the creation of this new list and it was censored, so I guess if "you know who" erased it to prevent AMPS "instability".
Things became personal matters.

Best regards
Guillermo - LU8EYW.
For years I have been wounder who the moderator was at
the amps-list, I know now, guess I should have figured
it out.
73 Jim SM2EKM

Censorship/Administrator

Pete Smith

#31

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 pretty
well, though the Admin would have had to ban a few people.

73, Pete Smith N4ZR

Re: Censorship/Administrator

#33

OK it isnt W8JI, who is it?

73 SM2EKM
--------------------------------------
Pete Smith wrote:

Show quoted text

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 pretty well, though the Admin would have had to ban a few people.
73, Pete Smith N4ZR

Re: Who is?

#45

Mike,

?

Jack the Jag's story can be found at

?

-John,?N9RF?

?

Show quoted text

-----Original Message-----
From: w5uc@...
To: ham_amplifiers@...
Sent: Wed, 20 Sep 2006 4:54 AM
Subject: [ham_amplifiers] Who is?

Apparently the discusion got squashed on the other reflector. SO, who 
is Jack Gerritsen?

73,
Mike, W5UC






 
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Re: Censorship/Administrator

Pete Smith

#34

I am going to respect his anonymity.

73, Pete N4ZR

Show quoted text

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

Re: Censorship/Administrator

#36

Yes I know you would but there might be others!

/SM2EKM
-------------

Pete Smith wrote:

Show quoted text

I am going to respect his anonymity.
73, Pete N4ZR
At 08:32 AM 9/20/2006, Jan Erik Holm wrote:
OK it isnt 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 pretty well, though the Admin would have had to ban a few people.

73, Pete Smith N4ZR

Yahoo! Groups Links

Yahoo! Groups Links

Re: Censorship/Administrator

Mike\(W5UC\) & Kathy\(K5MWH\)

#35

开云体育

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 pretty
>> well, though the Admin would have had to ban a few people.
>>
>> 73, Pete Smith N4ZR
>>
>
>
>
>
>Yahoo! Groups Links
>
>
>
>
>
>
>

Re: Censorship/Administrator

bill_w4zv

#37

--- In ham_amplifiers@..., "Pete Smith" <n4zr@...> 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

Re: Censorship/Administrator

#38

On Sep 20, 2006, at 4:45 AM, 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 There is no Admin of AMPS.  From its beginning in late 1996, AMPS  has always had a moderator --- who was identified.  I got booted off  AMPS three times by three different moderators for questioning the  accuracy of W8JI's technical statements.

I'm not either ;^)Chortle.  Nobody is the "Administrator".  It's another Rauchian word  game.  For example, Tom says I wasn't booted off of AMPS, he says I  was "unsubscribed".

W4AN was not a fan of free speech -Definitely not.  AMPS got started in 1996 because things went badly  for W8JI during the grate parasitics debate on rec.amateur- radio.homebrew.  W4AN's AMPS provided W8JI with a venue where anyone  who disagreed with W8JI's technical fumbles could be booted. Thus,  Tom's guru status could be protected, at least in the minds of those  who believed in his infallibility.

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.Censoring posts should be a last resort.  When censoring becomes a  weapon to protect pals, the group gradually loses credibility and  begins morphing into a mutual admiration society.

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.sounds reasonable, but the ultimate censor is being ignored by the  rest of the group.

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.AMPS has had ugly name-calling and no action was taken because the  name-caller was a pal of the "Administrator"-censor, W8JI.  During  the grate debate on rec.amateur-radio.homebrew, there was an  abundance of name calling from the Rauchian camp after Wes, N7WS,  published the measurements of Q, Rp, Z, and Y of low-Q parasitic  suppressors vs. W8JI parasitic suppressors.

From what I have read, such a regime on amps would have worked pretty
well, though the Admin would have had to ban a few people.But Joe Subich is Tom's pal.

farewell, Pete

73, Pete Smith N4ZR

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