my new 4-1000a leenyer!

[kf6pqt]

Or, more appropriately, my $30 pile of parts from last weekends hamfest:

[kf6pqt]

hmmm...

[kf6pqt]

hmmm... Since I don't have a four one thousand, I may preserve that socket and stick something else in there... (I have no way of making 4kv right now anyway!) its got tuned inputs, I haven't had the bottom opened up yet to see if there is a filament choke, but I bet there is.

No idea them things used 7.5 volts! 

[kf6pqt]

relays...

[The Slab Bacon]

The Vacuuuum cap alone is worth more than double what you paid for the whole thing! used but usable 4X1s are still cheap and easily found. That could be the foundation for you becoming the local
STRAPPA!! The power supply is the easy part to build. I love 4X1s, I still feel that they are one of the best horsepower per dollar tubes around! They are also not very finnicky or demanding!!

                                                      The Slab Bacon

[W9GT]

Wow!! Great find for $30.00.  Vacuum variable and nice big rotary inductor...great basis for a big amplifier.  If you don't find a good       4-1000, you might consider using one or more of those Russian tubes that are prevalent on eBay.  2 or 3 4CX800s would make a killer amp or maybe one of those GU-43 tetrodes (1600 W) that I have seen for $30-$40.  Of course the socket is another story and will probably cost much more than the tube.  I have built many amplifiers over the years and it is fairly easy to do.....especially when you have a good start with some of the most expensive and harder to find parts.  As for the power supply....you could even use an old pole pig.  Be careful with that high joltage!!!!

73,  Jack, W9GT

[WA1GFZ]

That's layout is pretty clean. You should find a nice plate cap and build it up and become a strapper. 1500 watts is easy with 3500 volts even if you ground the grids and use it as a triode linear.

Hey Frank you should see the 4CX3000A. about the same size and will do 5.6 KW. I have a lifetime supply. It is like the 4-1's big brother....
and the 4X5's little sister with no handles

[W3SLK]

Frank said:

Hey Frank you should see the 4CX3000A. about the same size and will do 5.6 KW. I have a lifetime supply. It is like the 4-1's big brother....
and the 4X5's little sister with no handles

Frank, I won't be able to do the Pony Express anymore. My sister moved from Brooklyn, CT to Watertown, NY.

[kf6pqt]

Now that I think about the inventory, I  think I can come up with possibly even 4kv, its the filtering caps that might be the problem... I'm skeered of PolyChorinatedBiphenyls.

I'm still going to build my little 2x 811a from scratch first... just for the education. My thinking so far is to either drop a single 4-400a in there, or the 250th.

[KB2WIG]

              "  I'm skeered of PolyChorinatedBiphenyls  "

u might want to chesk out the oil cans anyway,,  not all of them use pcbeezs... maybee a google  for the trade names...  I cant find my list ....   klc

[Jim, W5JO]

Given the exposure you will have to PCB, I doubt is will cause any harm provided you don't bathe in it, wash your hands in it daily or drink it.  And rather than radically redesign the thing, wouldn't it be easier to just find a 4-1000 for some sort of trade?

Those tubes will last forever if you run them at about 2.5 KV at a reasonable plate current.  I see them from time to time at hamfests for reasonable prices.

[Ed-VA3ES]

Frank, I won't be able to do the Pony Express anymore. My sister moved from Brooklyn, CT to Watertown, NY.

In that case we can expect to see you up here in Ottawa, which is just across the St Lawrence  river.

[WA1GFZ]

That's OK Mikey I'm out of big glass. Frank got the last of it.

[WU2D]

Jason,

Finding half finished projects like that one is tremendous. I found a partially completed HV power supply with meters, a big XFMR, variac and oil filled caps and a crusty lampcord for 15 bucks. Sure it was a widowmaker, but after putting in protection, and a decent cord and solid state rectifiers, it became my ART-13 HV supply. The point is - consider all of the work that somebody did that you do not have to do.

I probably would not have been able to even put the wrinkle paint on right!

Mike WU2D

[The Slab Bacon]

That's OK Mikey I'm out of big glass. Frank got the last of it.

That was a good one!! Shipped via the "AM pony express" By the time those tubes got here, they had traveled so many miles I had to take them in for an oil change!!

Thankz again for the help guys!! That put me in good shape for spares.

                                            The Slab Bacon

[W3SLK]

Ed said:

In that case we can expect to see you up here in Ottawa, which is just across the St Lawrence  river.

I haven't been to Ottawa since the Expo was in town back in '75. I always liked the Museum of Science there. We used to go fishing up in Quebec province at Lake Lac Lepeche. Nice area, (at least it was then).

[Vortex Joe - N3IBX]

Now that I think about the inventory, I  think I can come up with possibly even 4kv, its the filtering caps that might be the problem... I'm skeered of PolyChorinatedBiphenyls.

I'm still going to build my little 2x 811a from scratch first... just for the education. My thinking so far is to either drop a single 4-400a in there, or the 250th.

Go for the 4X1. Like Frank, KB3AHE, and others have said, you'll be very satisfied with the results. It looks like you got a superb deal on the leenyar for only 30 bucks. You'd have to pay more than that for the tube socket alone. With the vacuum cap, etc, it looks like the makings of a FB RF deck for running a PW rig into.

I wonder if the filament transformer is part of the RF deck (7.5V@21amps)? If not, they're not too difficult to scare up.

Whatever course you take with it, the best of luck, and remember: "Antennas by Eimac"!

Mod-U-Later,
                 Joe Cro N3IBX

[kf6pqt]

Yep, thats the fil. xformer in there.

Anybody got an extra tube they wanna sell?

[The Slab Bacon]

keep an eye out at ur local festers. At least, here on the right coast, I am still seeing broadcast pulls showing up in the $50 or less price range. There is still a lot of them out there, and not a big demand for them, and the audiophoolz dont want them. So the price is staying fairly low.

By the way, what ever happened with the Dixie 100 project??

                                               The Slab Bacon

[W1GFH]

Oh man...a 'PQT 4-1000 contraption is soon to go on the air in my neighborhood...I'm stocking up on attenuators.

[WBear2GCR]

TECHNICAL NOTE

The fyne beeznest use of gen-you-wine Teee Veee dorknob cazapitors!

(...now gather 'round kiddies, and uncle bear will tell you all a sto-ree about what Teee-Veee was...)

                   _-_-bear

[kf6pqt]

dx-60 driving a 4-1000a.    Thats like seeing a vw bug with a 454 bigblock sticking out the back! I'll have to see if that 220 outlet behind my gas stove is live.

The DX-100 is going to receive several hours of attention this weekend, wish me luck.

Bear, I've had the great fortune of actually removing doorknob caps out of a couple of old TV's recently!

[W1GFH]

dx-60 driving a 4-1000a.    Thats like seeing a vw bug with a 454 bigblock sticking out the back! I'll have to see if that 220 outlet behind my gas stove is live.

The DX-100 is going to receive several hours of attention this weekend, wish me luck.

Bear, I've had the great fortune of actually removing doorknob caps out of a couple of old TV's recently!

Hey can you tell me what your avatar is? I keep thinking it's your big K1JJ tuner "art project".

[flintstone mop]

I may have missed something in the pics for your leanyear, but do you plan to blow some air around the pube?
Fred

[Vortex Joe - N3IBX]

I may have missed something in the pics for your leanyear, but do you plan to blow some air around the pube?
Fred

Fred,
       Good point OM!