I am Dan B. Cooper's grandson. ask me anything. I won't

Who?

what is the heater current for a 12AU7 at 12.6 Volts?

>>719234112

not a clue.

>>719234111

DB cooper.

>>719234009
Can you try to get my tie back for me? I think I left it on the seat of the plane.

Why a pic of a NOS preamp tube

what is the maximum first filter capacitance for a 5U4G?

>>719234009
Is it true he was a she

>>719234218

shut up grandpa. it's gone.

>>719234213
about 150 mA bitch, why post a tube pic if you don't know the first thing about htem?

In this thread OP gets his assistant handed to him by tube enthusiasts

>>719234220

He dealt with sylvania in the manufacture of aeronautics parts

>>719234263

no.

>>719234320

>strontium

>>719234508

pretty much.

Gets his ass handed to him. God I hate auto correct

Does it bother you that an irresponsible media basically made him into a hijacker?

>>719234631

s'okay

>>719234009
Post some proof

>>719234750
no. they're right.
he was a hijacker. he committed air piracy with a carbide bomb.

>>719234782

I have only his words.

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>>719234213
This is now a tube thread

was the bomb actually a bomb?
did he just jump out some random place or was he aiming?

>>719235036

yes. It was a real bomb that would really detonate. but it was to destroy the plane; he refused to kill innocent people.

he was trying to fool them into thinking he was headed south. he went west.

>>719234844
He "indicated" he had a bomb. The plane was hijacked with words only

>>719235034

POST CRT's or get out. this is a strontium doped thread only.

>>719235279

no. he had a real carbide bomb.

So why is it exactly that NOS are Cosidered better than modern production tube

>>719234319
>shut up grandpa. it's gone.
Ungrateful little pissant, after all I've done for you. I have half a mind to ask for the money back.

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>>719235346
Fuck you and your strontium. Thoriated tungsten master race

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>>719235034

>>719235486

do they even make vac tubes anymore?

>>719235517

fuckin hippie.

>>719235401
Even though you are full of shit I will take you at your word. It doesn't change the fact, however, that the plane was hijacked with words only.

>>719235517
real tubes have anode caps

fuck all 9-pin tubes and octal faggotry

Oh yeah the make vacuum tube still. Guitar and bass amps still rely on them. As well as audiophile gear

>>719235505

you never gave me shit grandpa, except that one time you smeared toilet paper on me covered in peanut butter.

you know damned well that money went to Connecticut college.

He jumped out of the plane over heavy woods somewhere in the Northwest with a bunch of cash, right? Where did he wind up? One report put him in Arizona.

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Pair of monobloc amps I own.

(These ones are not mine)

>>719235741
>audiophile
AKA People who think they hear things that they really don't

Have you ever thought of having his case closed? Give the FBI some evidence or what not?

>>719235682

he had a real homemade bomb and showed it to the stewardess.

>>719235838
Evidently he landed in OP's fantasy world

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>>719235727
Real tubes are made of fucking ceramic.

>>719235838

"the navy base"

he moved around alot, millitary family and all.

How hard are you laughing / crying when you see the History Channel docu on DBC?

>>719234009
Thought he died on impact

>>719235924
Because stewardesses in 1971 also doubled as bomb experts between serving drinks.

>>719236068

I only just found out about this yesterday.

>>719236118

survived (hence me) and GTFO

>>719234009
Did you vote for Trump?

>>719235849
six 6CA7 per side

I've got an ancient Sound City 120 in the attic, six original Mullard EL34s in the back. Sounds like a jet taking off but the tubes are too soft to use. And modern tubes aren't made to handle 800V HT, it'd probably fuck them up in half an hour.

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OP only made this thread because D.B Cooper is in the news right now because they found some new evidence.

Dubs don't lie.

>>719236119

the bomb was to intimidate as much to distract in case of emergency.

>>719236228
>hence me
D.B. might have engendered your parent before falling to his death.

>>719236013
got any water-cooled anodes?

this is my favourite tube ever, it's just so deliciously hazardous ...

https://www.youtube.com/watch?v=yjMZ5qtyCUc

>>719236253
You can run EL34's with them, too. Never tried, though.

Never heard of Sound City - worth restoring?

>>719236252

no.

>>719236297

actually, because of his connections to the aerospace industry, I asked him about how he used strontium, and it went on from there.

I wouldn't have asked him without the new evidence. turns out mu mother knew since '80

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>>719236434
I wish, best I got is air cooled ceramic.

>>719236367

well, he's still married to my grandma, and I'm the spitting image of him. so there's that.

Never heard I'd sound city? SMH

Of

>>719236313
You just went mega-retard. Pack your shit up and go home.

>>719234112
150mA

>>719236461
6CA7 is equivalent to an EL34

Sound City were designed by the same guys who made Hiwatt and Orange amps, built like a tank and weighs a ton. It's only ever broken down once when a tube socket flashed over, needs a recap but it's still good to go.

>>719236802

he made a real carbide bomb and really showed it to the stewardess. his goal was to win, not to kill.

>>719236581
I take it most of these are transmitter tubes? Call me a faggot but I don't deal in kilovolts, only audio stuff.

>>719236809

bit late bruh.

>>719236692
>>719236756
I'm probably too young (30 now). In my day it was all about the Mesa Boogie/Orange/Hughes&Kettner type setups.

>>719235799
>except that one time you smeared toilet paper on me covered in peanut butter.

Yeah. 'Cept that wasn't peanut butter.

>>719234929
not good enough

>>719234231
40µF

6ca7 is the tube EVH used In his marshalls with the addition of a variac

>>719237085
yeah read so later

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nobody cares OP

How much money did he really end up with? I thought the government lied about the amount because it made them look bad

30 isn't to young I'm 27 no excuses

>>719236678
What did he do with the money? Supposedly $200K.
Does the TSA recognize your spittingimageness?

>>719237079
Yep all transmitter. I got cases of tubes from old tvs half of them are just diodes though.

>>719237150
I would have accepted anything between 33uF and 47uF. You win tonight's star prize, a Russian 1Ж24Б wire ended tube that I have lying around in the kitchen for some reason

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ok, so now for more important issues, ..

which star trek series was best ?

>>719235897

no. He's very old and dying. I don't want the flac and neither does he. when he dies, I'll think about it if I can prove it. he matches the witness sketches to a tee.

>>719237444
just googled the datasheet, didn't even need to interpret any graphs .. too easy

>>719237487
DS9

>>719237255
The variac story was a ruse to annoy people, he never once used a variac. If you run a tube amp with a variac then you don't just drop the HT voltage, you drop the heater voltage as well and that's really not a great idea. Plus those Plexis are fixed-bias amps with the bias coming from separate windings on the TX so he'd drop the bias voltage at the same time and risk running the amp into thermal runaway

tl;dr - Eddie van Halen was talking through his anus when he said he used a variac

>>719237577
flak*

>>719237412

my mother's and uncle's college tuition.

No. I've flown many times.

>>719234009
literally who

>>719237723

thanks.

>>719235897
D.B. Cooper: FBI closes the books 45 years after skyjacking mystery
July 14, 2016
http://edition.cnn.com/2016/07/12/world/d-b-cooper-fbi-closes-case/index.html

>>719237665

FUCK YOU AND YOUR WHORE MOTHER.

TNG BIOTCH

>>719234231
that's just a rectifier, not even in the audiopath

>>719237853

technically, he's been charged in absentia, so he's not off the hook yet.

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>>719237487
hello

Did he work for Boeing, why did he leave his tie and shit on the plane, and why did he do it?

>>719237779
(You're a little late to the party there, Sparky.)

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>>719237895
>DS9 > TNG > VOY > TOS > TAS > ENT

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>>719238024

>>719237748

along with the furthering of his own education. He has 3 doctorates and my uncle has 4.

>>719235564
yes

>>719237969
Yes, but it still has a recommended maximum for the first filter cap.

>>719238038
>shit on the plane

He shit on the plane? How do you know this? Inside information?

>>719236013
Now youre talking.

>>719238172
yeah but it's all in the power supply, has nothing to do with the sound in those amps, could as well just replace the whole psu with solid state tech and it wouldn't make a difference.

prove OP

Hmm interesting I found on the EVH marshalls I didn't know plexis were fixed bias

>>719238038

he worked for sylvania/government, he didn't want it to get tangled in the parachute (he wasn't worried about strangling, he was worried about steering) but he regrets losing the pin.

he did it for a) fun and b) money for his kids college.

>>719238255
ye

>>719234009
who is dan b cooper and why would we give a fuck youre his grandson or want to ask you questions

Info

when did he tell you the truth

>>719238412

when I can grab a snapshot of a picture of him and one of his pins I will.

I have none now.

>>719238485
Spotted the 12 year old.

>>719238591

yesterday.

>>719238485

I'm not forcing your hand. you're free to go fuck yourself in peace.

>>719238485
he hijacked a plane you dribble dick retard

>>719234009
Prove it.

>>719238343
Tube rectifiers DO affect the sound. Some Boogie "Rectifier" amps have a selectable solid state or tube rectifier and you'll hear a difference when you throw that switch. Amps work my modulating DC, if you give it different DC to modulate then it will sound different. The solid state rectifier will also have a different pi filter, that will filter the HT differently and that really will affect the final sound of the amp.

If you think all power supplies are the same, try an amp with a CRC pi filter and one with a CLC pi filter. The difference is astounding.

what was your initial reaction and why did he tell you

>>719238152
What did he do with three doctorates? In which disciplines?

Parachuting into a forest isn't the safest maneuver. How did he pull that off? And how did he find his way back to civilization?

>>719235034
I need that.

>>719238808
drop in some diodes to do the rectifying and emulate the ripple using an mcu, mosfets and some load resistors

no more maintenance, and more sound settings

>>719234009
>still using class A amplifiers
you eco terrorist !

>>719238801

I have none now. I'll try to get some next time I'm there.

>>719238866

I asked him under suspicion as a result of his history in the aeronautics industry and his bomb making/chemistry skills after hearing the most recent chemical evidence and SEEING HIS FUCKIN PIC IN A WITNESS SKETCH. I was not surprised, i just listened as he told the story.

Best thread In a long while. DB Cooper, tubes and star trek .

>>719239097

he's done crazier shit. He just headed west.

>>719239485

SCIENCE!!!

1500 Volts HT? check
72 pound output transformer? check
Russian radar tubes? check
Buff Santa? check

THIS is a tube amp

http://tubelab.com/prototypes/833-se/

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>>719239485

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Tubes are beautiful. This is inside our old EDM machine.

>>719239508
>he's done crazier shit.
tell us OP

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>>719239485

>>719239689
That looks like an old movie theater amp

>>719234111
A guy who hijacked a plane and manage to get away from the law with a shit ton of money

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>>719239795

>>719239799
Could be similar tech, I don't know much about electronics. It needs a lot of power to generate the spark that burns away the metal.

>>719239708

He dropped a can of sodium off a bridge in his hometown when he was 8. pissed everyone off.

in his 80's, he beat the ever loving shit out of one of my uncles by marriage, who was in his 40's.

he jogged in speedos before speedos were cool

he built an ultralight by hand.

he made it rain inside a 1959 suburban.

>>719240048

that is not him.

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>>719234009
Did he get his name from Dan Cooper comics?

>>719240114
Just don't ever switch it on without a speaker attached. Unless you want to see smoke coming from the output transformer.

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>>719240235

>>719240245

no. he switched and shifted his initials while keeping the vowel sounds. he pulled it out of his ass.

>>719240419

the nose is the same though.

>>719240180
>he made it rain inside a 1959 suburban.
imma need some context OP

>>719234009
Does anyone else in your family besides you know?

>>719240600

he drove on a hill, causing the moisture inside the car to condense and precipitate until the pressure and temperature equalized.

>>719240708

me, my mom, my uncle and my grandma.

>>719234009
Hope you know the media added the B, the hijacker's middle initial was A fucktard

>>719241084

it's welsh.

he seemed like a pretty rad dude

>>719238074
actual fact

After you found out did you go to Wikipedia and read all the stuff that the public doesn't know

>>719241253

yes. except that DS9 is horsecock guzzling bitch shit.

>>719238485
How do you write an entire "sentence" without punctuation or capitol letters??

Fucking child!

>>719241373
Damn dude chill he's just a kid he doesn't know any better.

>>719241352

what? yes, I went to wikipedia. only to find out the pin he regretted leaving behind was given to him by 'Muddy"

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>>719241366

>>719241007

yes it was.

>>719241113

but that's TMI

OP how do you feel about this thread being invaded by a bunch of tube fags.

>>719241646

look at that fine actor, regrettably cast in a slipshod pitiful excuse for a soap opera disguised as a sci fi series. SAD!

>>719241813

it's pretty great. I'm happy to have my thread hijacked by the honor of tecchies and trekkies.

tube long and prosper, brothers.

How'd he make it home unnoticed after landing?

>>719242039

but nobody's focusing on the advantages of strontium doping. sure, other metals work provided they have the electrons to absorb the x-rays, but they leave a visible tinge to the glass, unsuitable for certain aerospace applications, like the windshields of spacecraft.

but strontium's where it's at, yo. get with the times.

>>719242372

straight west. no detours.

once he got to base, home free. they didn't check baggage back then, especially with his clearance.

>>719242377

*hint hint

>>719234009
“Norman de Winter.”

>>719241909
go to sleep donald, you're drunk, and clearly you can't appreciate the finer story

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>>719242687
>>719242687

aktshually....

>>719242810

soap opera with "extreme diversity"

nothing more.

>>719242855
???

>>719242979

give it a couple years.

>>719242562

Where'd the metal on his tie come from?

>>719242979

also

>>719242377
>>719242638

>>719243237

*ahem

>>719242377

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>>719242931
go twit about it

clearly you missed the underlying story

>>719243533

a bunch of pussies stagnating in a static tin can in an empty region of space guzzling resources and crying about their own personal problems instead of all the relevant shit happening pretty much everywhere else?

na, I think I pretty much got it.

>>719242687
My uncle swears this was the same person.

>>719243828
is that what you got from DS9 ?

you didn't even watch it, did you

>>719242562
You guys live in San Diego?

Post your face with time stamp.

Just out of curiosity, how do you know? Are you certain?

>>719243931

I did. Quark was the only redeemable character, relatable character. also, the only entertaining one. everyone else was all "feels" and "me" centered.

worst. star trek. ever.

>>719244090
Who is this directed at??

>>719243828
it's called character building, and there was next to no drame, there was much more drama in VOY.

DS9 was about the strategic battle over the wormhole at bajor which the dominion could leverage to conquer the alpha quadrant, you insensitive clod.

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>>719244164

>>719244034

maine.

no.

his, after he's dead. along with pics from 1970-1972 and any other dirt I can dig up that he hasn't burned yet.

>>719244090

I developed a suspicion after the connections I made from recent news reports and his history in thrill seeking, chemistry and the aerospace industry. I developed an inquisition an posited it to him.

He gave me the full story.


I am not certain. but he has never bull shitted me before. I have no reason to believe he is now.
his shit adds up (even the muddy bit) but as of this moment, I have no proof. only my suspicion and his subsequent word.

>>719244189

ME, the OP.

>>719244358
Where is the hat guy from?

>>719244688
“Norman de Winter.”

>>719244222

VOY had alot more active exploration (though I agree equal drama), not just the rotting husk of the federation burocracy pretending sitting there doing nothing would accomplish anything.

DS9 had no oomph, no excitement. they all just sat there, reacting to stimuli, never deciding to forge a path, but actively resisting new ones.

sorry but, but >>719238074

is correct except that DS9 is the second worst (after ENT)

how old is he now

>>719237709

He is use a variac.
And Tx is usually reserved for Transmitter. Just use Input/ power transformer.

And even if it was a separate winding, the primary of the transformer would stull be fes by the variac, so it still gets affected. The idea behind the variac was to roast the tubes and make them distort earlier.

>>719245158
earth man from 1947, you silly humon

>>719245274

northman of winter. sounds like a guy that hates the cliché of the tropical beach and would perfer the northern latitudes.

regardless, why u spam bra?

>>719245487

"these people buy poison!"

>>719245307

93

>>719245487
>humon

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Oldfag thread? I been on /b/ since 83.

>>719245527
Are you the OP?

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>>719245305
yes, TNG was more about exploring and had a lot of concepts that made us reflect on things as kids;
DS9 is clearly a deeper story about alliances and strategies. I'm sorry you cannot appreciate, i bet you absolutely love the new movies too, you muppet

>>719239281

Explain?

Is the mosfet supposed to be a filter control for the cap's injection?

>>719245892
Makes sense

>>719245859

yes.

What made it so difficult to catch him? How'd he spend the money if they knew the serial numbers?

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>>719245606
>>719245673
ds9 certainly had its moments, if not not the ferengi side story eps alone ...

>>719245984
http://www.dailyastorian.com/Local_News/20160712/did-db-cooper-visit-astoria

I have family that met with that guy.

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>>719245983

>>719246084
That GIF had me making laughing sounds with my mouth.

>>719245892

DS9 is about being enormous crybabies. so many irrelevant social connections and rumors (yes, they're relevant to political activities) that really just make the star trek universe look as savage and tribal as our own society. sure, cavemen looking for something to familiarize the fiction with their own interpretation of reality need those evolutionary shortcomings to relate to the story, but better people are above said dribble.

1st new move was crap.

2nd new movie was actually really good in terms of entertainment value.

>>719234009
did he actually get away? my dad just told me about this story

>>719246091

he's not in oregon.

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>>719246432

>>719246404

mee tee leelee

>>719245895
use the mosfets (or whatever) to dump loads into the load resistors to emulate a ripple. drive said mosfets with pwm from an mcu and optionally do some feedback to precisely control it

>>719246505

yes. he headed straight west, hitched a ride to the nearest naval base and took a flight to boston.

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>>719246733
>>719246404

>>719246591
Of course not. That guy, Norman de Winter was in Astoria before the hijacking. Many people, my uncle included, remember him to be the same man.

Also, how close is the sketch?

>>719246946
fuckin boss. I mean i guess he had to live for you to be alive. At some point you should really let the evidence out of the bag for history's sake. Unless you still have the cash.

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>>719246975
wrong pic

You are not really giving much. What is your purpose for this post?

>>719247117

the eyes are too far apart.

that's all well and good. pseudonyms mean little in crime, but they can relate to the offenders imperative. "NORMAN. DE (of) WINTER.

>>719247181

I will when he's dead.
cash was given to universities. IDK what they used it for.

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>>719246848
so charge the caps to the max ripple, and dump current to ground through a load resistor using a power mosfet. drive the mosfet using pwm from an mcu which monitors the cap output voltage, so you can precisely control the ripple

>>719247947
never replace a rectifier tube again, and have much more options to influence sound

can even implement those filters you mentioned in software, run the control loop at a high enough frequency so it cannot possibly influence the sound

>>719247638

assuming I (OP) am the subject of that, correct. I'm not giving much. My purpose for (OP) is that my grandpa is a complete badass motherfucker that taught me to make bombs when I was a little kid< and bunches of other stuff I deleted from this post because it would give him away.

>>719247947
inb4 muh efficiency, you're running a class A amp for crying out loud

>>719247825

*cash was given to university higher-ups. Bribes, basically. probably used for prostitutes and drugs.

>>719242377
Not gleaning much from this, all I can turn up are references to glass panels protecting instruments from cosmic radiation

One more hint for you /b/;

he also built (mostly) a gyrocopter. he'd scoot it along the beach.

also, "that beast" (sorry about your dog) betsy lived in the basement.

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>>719247947
pick the load resistor value to match the match the desired max slew rate

and now i'm off to bed

>>719249203

"apollo shots"

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>>719247947
or wait .. just use the mosfet to charge the cap like any old charge pump ..

now i'm really off

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"baby it's cold outside"

"HONK HONK!"

Oh, baby it's cold outside..."

"HONK HONK!"

>>719250637
????

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>>719250637
Jam again...

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>>719251056

sweetie baby

>>719249385
Apollo 14? Going off the years 1971-1972

>>719251771

apollo missions.

>>719251385
D'AWWWW!!! adorable. MOAR

>>719244164
The original series is just as corny in its use of symbolism. I liked Odo and Dax and few others but I could never shake the feeling that DS9 dealt with various facets of Jewishness rather than the human condition in general.

>>719244688
Would you be thinking of writing his biography? It would have a Robin Hood attractiveness about it. These days it feels good to beat the crooked government.