"Oil Field Capasaders" are required because the extra oil insulates the
case of the cap better at 36,000 volts.

Rich , kd0zz

I was booted off of AMPS by W8JI, Charles Thomas Rauch, Jr. Thus, I can no longer post there. Would someone who can still post there please post that an uncensored alternative to AMPS now exists at:

Tnx

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

Hello to the new group.

I purchased a Henry 3K Ultra from a friend. Little did either of us
know, but a mouse decided to build a nest on top of the tube's cooler.
Apparently he liked smoke blown up his fanny. No, there is no carcass,
but the cooler is disgusting and about 5% of the fins are obstructed.

Any thoughts for removing the... debris from this dude?

Thanks,
John, N9RF

John -- Soaking the tube for a day in a bucket containing detergent
and ammonia might help. For cleaning up a tube's anode cooler and
ceramic parts, I use Bon Ami?, a soft cloth, a toothbrush and rinse
with purified water.
cheers

On Sep 14, 2006, at 7:24 AM, jmltinc wrote:

Hello to the new group.

I purchased a Henry 3K Ultra from a friend. Little did either of us
know, but a mouse decided to build a nest on top of the tube's cooler.
Apparently he liked smoke blown up his fanny. No, there is no
carcass,
but the cooler is disgusting and about 5% of the fins are obstructed.

Any thoughts for removing the... debris from this dude?

Thanks,
John, N9RF







Yahoo! Groups Links

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

This is great! No censorship here.

Indeed. The posting rate on AMPS appears to be decreasing, thanks to censoring posts.

On Sep 14, 2006, at 8:41 AM, k6kwqdm04 wrote:

This is great! No censorship here.






Yahoo! Groups Links

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

indeed. Byte bye Tom Rauch.

On Sep 14, 2006, at 8:41 AM, k6kwqdm04 wrote:

This is great! No censorship here.






Yahoo! Groups Links

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

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

I was booted off of AMPS by W8JI, Charles Thomas Rauch, Jr. Thus,

I

can no longer post there. Would someone who can still post there
please post that an uncensored alternative to AMPS now exists at:

Tnx

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

Obviously the Administrator, aka Tom Raunch, is doing severe
monitoring. Any posts are coming out in one shot. I posted a message
about this site so chances are, it won't make it. I'll bide my time.
Mod-U-Lator,
Mike(y)
W3SLK

Mike Sawyer escribi:

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

I was booted off of AMPS by W8JI, Charles Thomas Rauch, Jr. Thus,

I

can no longer post there. Would someone who can still post there please post that an uncensored alternative to AMPS now exists at:

Tnx

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

Obviously the Administrator, aka Tom Raunch, is doing severe monitoring. Any posts are coming out in one shot. I posted a message about this site so chances are, it won't make it. I'll bide my time.
Mod-U-Lator,
Mike(y)
W3SLK

Well, I did the same this morning; but until now, only one post arose, regarding automatic tuner photos. It mentions AG6K also (for a variation of your balanced line tuner, Rich).
The message I sent does not break any list rule, I think:

" Besides QRO, this list, and rfamplifiers, it has been created a new one for us who like to experiment and build /repair amplifiers. You can reach it at "

Best regards
Guillermo - LU8EYW.


P.S.: the word "reach" although suspicious, has nothing related with this list's creator.:)

It does not appear that the amps reflector will allow mentioning of
this group. We must spread the word by direct E-Mails to our friends.

In the amps archives, there is only one message posted today, and only
two posts made it through yesterday.

(((73)))
Phil Clements, K5PC

开云体育

开云体育

It's a real shame that the AMPS@... turned into what it did.
I quit amps@ about 2 months ago because of the nazi style control and censuring.
I refuse to belong to any GROUP that censures.
If you haven't used YAHOO before there are abilities to POST to
a FILES section and a PICTURES section.
So if you have any files or pictures LOG in to YAHOO
at and get a different look at the GROUP
and the things you can do.

I personally am not a GURU but enjoy reading questions
and answers about amps. They are black magic to me.

?

k5pcphil wrote:

It does not appear that the amps reflector will allow mentioning of
this group. We must spread the word by direct E-Mails to our friends.

In the amps archives, there is only one message posted today, and only
two posts made it through yesterday.

(((73)))
Phil Clements, K5PC

-- 
Bob
Vmoa chat list -> 
Vmoa tech list home -> 


Middleburg Fl (South Jacksonville)
ICQ 13912841
Web Page 

Visit the FDXPG at  

Ham Radio Calls: KR4DA FG/KR4DA J79DA HK0/KR4DA

Motorcycles CBMMA #4
1977 XS750D 1J7008405
1997 Vmax12J VMOA #504 

On Sep 14, 2006, at 7:07 PM, Mike Sawyer wrote:

I noticed that yesterday too, Phil. My guess is that he is 'over- moderating'. But if he is in to that sort of thing......
Mod-U-Lator,
Mike(y)
W3SLK
----- Original Message -----
From: k5pcphil
To: ham_amplifiers@...
Sent: Thursday, September 14, 2006 9:55 PM
Subject: [ham_amplifiers] Announcements of Our New Group

It does not appear that the amps reflector will allow mentioning of
this group.

I recently observed the same thing with other AMPS members, Phil. Bill Fisher, N4AN, is probably turning over in his grave.

We must spread the word by direct E-Mails to our friends.

Indeed. I updated my Website with the info about the uncensored, amplifier discussion group.

In the amps archives, there is only one message posted today, and only
two posts made it through yesterday.

There could well been more posts than that, but W8JI, the unidentified "Administrator", may have censored them. Shortly before Tom booted me out of AMPS, more than half of my posts were being censored/deleted by Tom, sans-explanation.

- hubris - n. // Overbearing pride or presumption; arrogance.

(((73)))
Phil Clements, K5PC

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

On Sep 14, 2006, at 7:42 PM, KR4DA wrote:

It's a real shame that the AMPS@... turned into what it did.
I quit amps@ about 2 months ago because of the nazi style control and censuring.
I refuse to belong to any GROUP that censures.

Since 1997, I have opposed censorship on AMPS, I got booted out 4- times and I was reinstated 3-times- thanks to pressure on the censor from AMPS members. My main weapon was direct-mailing to members around the censor when I got censored or booted.
As I see it, the freedom of the Internet can topple any megalomaniac that comes along, no matter if he appoints one of his faithful lap-dogs as the censor, or, as recently happened. he appoints himself as the censor.

If you haven't used YAHOO before there are abilities to POST to
a FILES section and a PICTURES section.
So if you have any files or pictures LOG in to YAHOO
at www.yahoo.com and get a different look at the GROUP
and the things you can do.

I personally am not a GURU but enjoy reading questions
and answers about amps. They are black magic to me.

historical note -- Up until I completed the "Plywood Box" x100 amplifier, I used to feel pretty much the same way, but then the lights came on, and I realized that it was a machine of smaller, understandable, machines, and the whole thing made sense. I was 42 when the lights came on, some 27 years after building my first amplifier. Now I'm 65 and I feel fortunate to be alive.

k5pcphil wrote:

It does not appear that the amps reflector will allow mentioning of
this group. We must spread the word by direct E-Mails to our friends.

In the amps archives, there is only one message posted today, and only
two posts made it through yesterday.

(((73)))
Phil Clements, K5PC

-- Bob Vmoa chat list -> vmoachat/ Vmoa tech list home -> group/vmoatech/ Middleburg Fl (South Jacksonville) ICQ 13912841 Web Page Visit the FDXPG at www.geocities.com/w4wx1/ Ham Radio Calls: KR4DA FG/KR4DA J79DA HK0/ KR4DA Motorcycles CBMMA #4 1977 XS750D 1J7008405 1997 Vmax12J VMOA #504

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

A month or so ago, my cousin visited me with an unusual gift. He discovered an old machine being scrapped and rescued for me (knowing my hobby) two Eimac 4PR-1000 tubes, with the chassis mount (blower fan included), two sockets, clamps and chimneys. You may figure my surprise when I saw him at my house's door with such bottles in his hands. The tubes where rescued from a medical equipment, so I don't know the performance, although they look visually good indeed. I read somewhere these are improved versions of the 4-1000 types, is this ok?.
There is a chart for AB2 grounded cathode work in the ARRL handbook ('97) which states 3000V plate voltage, and an idle current of 300mA. This while idle means you are nearly maximum rated plate dissipation, is ok?.


Best regards
Guillermo - LU8EYW.

开云体育

Guillermo: To be linear, a 4-1000 needs to be run either in Class AB1 grounded-cathode, grid-driven or Class AB2 g-g, cathode-driven. For SSB, anode supply potentials of 6kV to 7kV are common. For AB1: a screen supply of 1000V is needed to make maximum output, and Bruene bridge-neutralization is not a bad idea above 15m.
cheerz

On Sep 16, 2006, at 5:04 AM, GGLL wrote:

A month or so ago, my cousin visited me with an unusual gift. He discovered
an old machine being scrapped and rescued for me (knowing my hobby) two Eimac
4PR-1000 tubes, with the chassis mount (blower fan included), two sockets,
clamps and chimneys. You may figure my surprise when I saw him at my house's
door with such bottles in his hands. The tubes where rescued from a medical
equipment, so I don't know the performance, although they look visually good
indeed. I read somewhere these are improved versions of the 4-1000 types, is
this ok?.
There is a chart for AB2 grounded cathode work in the ARRL handbook ('97)
which states 3000V plate voltage, and an idle current of 300mA. This while
idle means you are nearly maximum rated plate dissipation, is ok?.


Best regards
Guillermo - LU8EYW.



Yahoo! Groups Links

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

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, two units are probably needed. By putting the 120V inputs to the two switcher supplies in series, operation from a standard, 240VCT, 20A outlet would work. I have not yet disassembled the oven to measure the HV. Does anyone know what's the typical range of potentials used to power magnetrons of this size? tnx

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

开云体育

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
r@...