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[Articles Home]  [Add Article]  

Dead Electrical Dudes No. 4

Philip Neidlinger (KA4KOE) on December 17, 2003
View comments about this article!


This Month's Stiff: Guglielmo Marconi

Entered Mortal coil: 25 April 1874

Assumed Room Temperature: 20 July 1937

0x01 graphic

Maestro Marconi

Now, in my esteemed opinion, if you haven't heard of Guglielmo Marconi, then you should mail forthwith your amateur radio license back to the Friendly Cookie Company (FCC), with a letter of contrite apology addressed to the honorable Mr. Riley Hollingsworth, K4ZDH, Special Counsel for Amateur Radio Enforcement. At the very best, you may be spared an encounter with the dreaded Wouff Hong (a terrible tool used for dealing out punishment to poor amateur radio operators). To put it simply, Marconi fielded the first practical radio communications system. GM's investigations were spurred on by the news of the success of Heinrich Hertz's experiments proving the existence of radio waves as predicted mathematically by James Clerk Maxwell.

GM began his experiments in Pontecchio, Italy on his rich Daddy's estate in 1895, aided by his brother. Marconi's DX was an astounding 1.5 miles, a feat rarely accomplished by the memorable Radio Shack CB Channel 14 100mW walkie talkies sold to hapless young waifs more than a half century later, powered by the ubiquitous 9V rectangular battery (great for tingling your tongue, by the way -- neat trick to try on little kids ...heh heh! Evil grin!). Heady stuff, this was. Marconi determined that if he grounded his radio apparatus, performance was dramatically improved. Imagine that! Further experiments and improvements extended the range to 12 miles in 1900, under the auspices of the newly formed Marconi Wireless Telegraph Company Limited. Over the course of 5 years, the Maestro increased the range of his gadget a phenomenal 10.5 miles! How many of you can match this feat of engineering?

In 1901 Marconi finally got his act together and transmitted the letter "S" in Morse code between Poldu, Cornwall England and Newfoundland, a distance of 2100 miles. Note that the transmitter utilized was a spark gap type. If you've ever seen a high power spark transmitter in operation, it is a treat, since the massive static discharges are spectacular. A little known fact is that the letter "S" (di di dit) was used, as the transmitter would have been damaged by the longer arc duty cycle encountered by sending dahs!!!!

GM carried on with further radio commercial ventures that were a financial success. David Sarnoff, who would later become the head of RCA, started out working for Marconi's company. Did you know that in the early days of Sarnoff's career, he delivered flowers to Marconi's many mistresses? Talk about pleasing the boss!!!

Philip Neidlinger

KA4KOE

Member Comments:
This article has expired. No more comments may be added.
 
Dead Electrical Dudes No. 4  
by OLDFART13 on November 27, 2003 Mail this to a friend!
I didn't see this one coming. Hihi.
 
RE: Dead Electrical Dudes No. 4  
by K5DVW on December 17, 2003 Mail this to a friend!
Oh. I always thought he invented Macaroni.
 
RE: Dead Electrical Dudes No. 4  
by KA4KOE on December 17, 2003 Mail this to a friend!
Just subscribing to the discussion.
 
Dead Electrical Dudes No. 4  
by AD3G on December 17, 2003 Mail this to a friend!
This series is great. Keep em' coming !!
 
Dead Electrical Dudes No. 4  
by WA2JJH on December 17, 2003 Mail this to a friend!
I knew that Sarnoff was hired as an errend boy by Marconi.
Today it is called a production assistant or go-pher.

I Did not know that Sarnoff was "pimp apprentice" too!
I think it was Sarnoff hearing the S.O.S from the titanic, that made Sarnoff the underboss for Marconi.

I built a spark gap transmitter when I was a kid.
This automotive mail order company called J.C. Whitney
would sell FORD COILS. The ford coils were like the ignition transformers with a built in electromagnetic chopper. One would put a 6 volt lantern battery to two terminals on the wooden box.

The top two connections, you made your spark gap.
It would transmit the worst hashiest CW across the entire AM radio band for a few hundred feet.

One could add an LC tank ciruit and antenna for less bandwidth and more range.
I guess marconi's transmitter was more of a controlled RFI generator than transmitter.

I do not know if it was Marconi that thaught of using
high frequency power generators for even less bandwidth. A 100 KHZ wide signal was considered good!

Thanks again Philip for another DED in the can.
What the heck was that torture device called again?

73 and happy generic seasons greetings to all. MIKE
 
RE: Dead Electrical Dudes No. 4  
by KC8VWM on December 17, 2003 Mail this to a friend!
Marconi's equipment was probably transmitting at medium wavelengths (wavelengths between about 100 metres and 1,000 metres).

Some have claimed that Marconi could never have got a medium wave signal across the Atlantic during daylight, when signals cannot travel so far.

Doubts in the British press and among scientists were largely settled in February 1902 when Marconi sailed for the United States on board the SS Philadelphia, which had been fitted with antennas.

The ship's captain confirmed that readable signals were received from Poldhu over 1500 miles from shore.

In Marconi's own lifetime, a controversy had erupted about the origin of the coherer that was used in the transmitter design for the transatlantic contact in December 1901.

The press discovered that an Italian Navy signalman, P. Castelli who had originally invented the mercury coherer. Meanwhile, Marconi said that the receiving device was given to him by the Italian Navy through his childhood friend Luigi Solari, a lieutenant in the Navy.

In 1998, a special issue of the proceedings of the New York-based Institute of Electronics and Electrical Engineers (IEEE), made out a definitive case for JC Bose, a biologist and physicist.

The 'Italian Navy Coherer Scandal' discovered that Marconi, through his careful choice of words, caused deliberate confusions and, using clear diversionary tactics, shifted attention to the works of other scientists rather than acknowledging that the receiver he used to detect the trans-Atlantic signal was none other than Bose's receiver that he had trivially modified from being a U-tube to a linear tube.

The modern day Bose institute applauded the IEEE for its findings and said: "Bose should have jointly received the 1909 Nobel Prize with Marconi for the discovery of wireless telegraphy. A grave injustice has been done." While the institute agrees that no one can deny that it was Marconi who used and utilized this discovery for the larger benefit of mankind, he asserts that it was Bose who actually made the invention.

73

Charles - KC8VWM
 
RE: Dead Electrical Dudes No. 4  
by K4JSR on December 17, 2003 Mail this to a friend!
Actually Marconi did not send dit dit dit.
He sent ded ded dit! ;-D
Keep the articles coming-- They are great!
73, Cal K4JSR
 
Dead Electrical Dudes No. 4  
by K2WH on December 17, 2003 Mail this to a friend!
They are not "Dudes".

K2WH
 
Dead Electrical Dudes No. 4  
by K8LEA on December 17, 2003 Mail this to a friend!
(Great article!)

I've never had the opportunity to work with a coherer, but I did get to watch somebody fire up a fairly high-powered spark gap at the 1958 ARRL convention in 1958. Definitely something to see, but not to stand too close to.... [grin]

The stories of Marconi's DX experiments do seem kind of silly - going from 1 to 10 miles, for example (does sound like those RS HT's), until you take a look at the way a coherer actually works. Why the things work at all is somewhere between miracle and "they can't".... Getting enough RF into the thing to make it do anything was a major issue.

We're all probably better off that Marconi and friends started with a kludge like that, though - by the time "real" receivers came into existence, the whole concept of tuning (if really intended, at the time, just to get more RF into the detector) seems to have been fairly well worked out.

I expect that Marconi's obfuscations about who's coherer, etc., were deliberate, but not as a way of denying credit. Rather, IMHO, a way of protecting trade secrets. Marconi had spent a pile of money trying to build a wireless "Western Union", and didn't want everybody else able to easily compete with him. We need only to look at the Wright brothers to see that - they really never went very far past the first flight because they were so careful to protect their inventions that nobody saw the things....

Marconi, OTOH, apparently realized that he had to be "visible", and that his "systems" were relatively easy to duplicate, except that while the concept and design of a suitable spark gap is pretty trivial, practically nobody knew what coherer _was_ at the time....

Just sitting here ruminating on the concept of a spark-gap based HT.... I really need a life [grin]. But, somewhere, I've got a mechanical rotary dial from a Western Electric lineman's "Butt" set that I seriously considered building into a Secode dialer for a HT. Bless Touchtone, I never had to do that....

(For those not old enough, "Secode" is a trade name, but it means an interrupted tone dialing system used for autopatches & other radio control techniques years back. Essentially, the dial _is_ a regular telco rotary dial, although it may be wired a bit differently. Usually 2805hz, and a real pain to listen to when somebody else was dialing, but it worked fairly well if your signal wasn't too choppy. We won't even talk about the decoders, except to say that the coherer becomes a trivial concept in comparison [grin].)

Stu K8LEA
 
RE: Dead Electrical Dudes No. 4  
by KC8VWM on December 17, 2003 Mail this to a friend!
Interesting...
 
RE: Dead Electrical Dudes No. 4  
by KA4KOE on December 17, 2003 Mail this to a friend!
HEY MIKE!!!!

I think you need to join the 'OG repeater group and find out why their members never smile!!!!!

 
Dead Electrical Dudes No. 4  
by WA4BWO on December 17, 2003 Mail this to a friend!
Well, well. I am impressed, that there are a few who know who this Marconi guy was. With the sounds on the bands these days, I think the newly licensed Extras are experimenting with Spark Gap as well, specially on 75. Nicely written. Who's next???? D
 
Dead Electrical Dudes No. 4  
by AC7KT on December 17, 2003 Mail this to a friend!
Fantastic keep em comming!!!.
 
RE: Dead Electrical Dudes No. 4  
by WB2JKM on December 17, 2003 Mail this to a friend!
The DED stories seem to be getting shorter and shorter, kinda dying out? Have you lost your spark? How long before they assume ground potential? TSTB !
 
RE: Dead Electrical Dudes No. 4  
by KA4KOE on December 17, 2003 Mail this to a friend!
ACTUALLY, the one on OHM to follow is longer this one. Depends on my mood, how late it is (I usually write these lil things after midnight when the bride and cracker snatchers are in dreamland). Any excessive verbiage is referred to as "deadwood". Why make a piece of writing any longer than necessary? I think a carpentry term that is similar is "the right tool for the right job". Ergo length. JKM, your homework assignment tonight is to write an essay on humor and why the greats always said that excessive length killed it. You will be graded on your spelling, by the way.
 
RE: Dead Electrical Dudes No. 4  
by K3ESE on December 17, 2003 Mail this to a friend!
...are too Dudes!
 
RE: Dead Electrical Dudes No. 4  
by N2WEC on December 17, 2003 Mail this to a friend!
Well done!!!
N2WEC
 
RE: Dead Electrical Dudes No. 4  
by WB2JKM on December 17, 2003 Mail this to a friend!
KOE, my new series of space wasters on here will be, as you suggested, articles on comedians. The articles will be called Dead Funny Dudes and the first one will be dead-i-cated to you.

And, please don't quit your day job. Your cracker snatchers will starve if you have to depend on your literary skills for income.

 
RE: Dead Electrical Dudes No. 4  
by KA4KOE on December 17, 2003 Mail this to a friend!
I do appreciate your candor. We all appreciate bona fide callsigns. How about it gang?
 
RE: Dead Electrical Dudes No. 4  
by TECH2003 on December 17, 2003 Mail this to a friend!
Oh, more of these dead dudes. I guess the old farts here can talk on CW about how they used to know these guys and would go out for beers together and take their geritol and talk about their hemroids.
 
RE: Dead Electrical Dudes No. 4  
by JAMES_BENEDICT_EX_N8FVJ on December 17, 2003 Mail this to a friend!
The coherer was a device that went from high impedance to low impedance, then reset. Would not this device be a digital item? Thus, the first digital based receiver. Perhaps the first Digital Signal Processor or DSP as well?
 
RE: Dead Electrical Dudes No. 4  
by W5ONV on December 17, 2003 Mail this to a friend!
He also designed and invented the famous Spanish dance called The Mockarana.
 
Dead Electrical Dudes No. 4  
by K1ZF on December 17, 2003 Mail this to a friend!
Hey KOE...

Good job. Don't let the zipper heads get you down. And if you want to loose your day job, there's lots of room...

K1ZF
 
RE: Dead Electrical Dudes No. 4  
by KA4KOE on December 17, 2003 Mail this to a friend!
ZF:

Nah, this is fun!!! Thanks!!!!
 
RE: Dead Electrical Dudes No. 4  
by KC8VWM on December 17, 2003 Mail this to a friend!

>>>>The coherer was a device that went from high impedance to low impedance, then reset. Would not this device be a digital item? <<<<

Glad you asked. (hihi) Marconi's coherer can be best described as resembling a kazoo in shape and size, but made of blown glass.

How it works you ask? The glass "kazoo" looking tube consisted of a small quantity of metal filings lying loosely between metallic electrodes. The actual concept of how it works is really pretty intriguing considering this era.

For a complete description of Marconi's early coherer device and how it functions, cut and paste the following URL into your web browser:

http://home.luna.nl/~arjan-uil/radio/history/wireless-age/coherer.html



73

Charles - KC8VWM

"RF is a terrible thing to waste."

 
Dead Electrical Dudes No. 4  
by WA2JJH on December 18, 2003 Mail this to a friend!
I will check out the link on the coherer. I always thought it was a detector. The filings would collect when a dit or a dah was received. Or it went after the detector. It would actually open and close circuit to the head phones. I guess it was a crude DSP. I could be wrong, I saw that book when I was 7.
If it was not the coherer, there was some home brewed
componant that did that. No diode tubes back then.
Something had to drive the headphones

I heard stories of how the coherer had to be tapped, when the metal filings would stick to the rod.

Saw an antique book that was around years before the ARRL handbook. Had a schematic of the whole shack.
Spark gap TX, and the RX had the coherer after the cat whisker/lead galana detector. I was 7 years old when I saw that book. I could be wrong.

They suggested a kite to get the antenna wire up high. I guess they stole that idea from Ben Franklyn.

OK Philip, looking foward to the next DED. Dawn of the DED.
73 MIKE
 
Dead Electrical Dudes No. 4  
by KB1IVU on December 18, 2003 Mail this to a friend!
I have too much respect for this guy to make any wise remarks....
 
RE: Dead Electrical Dudes No. 4  
by KA4KOE on December 18, 2003 Mail this to a friend!
JJH:

Its simply amazing that the coherer worked at all. It all seems like a major kludge. I wonder what the sensitivity was....millivolts, volts? Bet Schottky diodes would've "rocked" their world....bye bye Galena.
 
RE: Dead Electrical Dudes No. 4  
by DROLLTROLL on December 18, 2003 Mail this to a friend!
So, are you saying that Marconi was the first Wireless OPerator or W.OP. for short?
 
Dead Electrical Dudes No. 4  
by WA2JJH on December 18, 2003 Mail this to a friend!
The tin wire/galena-lead detector was the first solid state diode detector. I do not know what it's foward bias voltage was. Schokties are .15V. Germainiums are .25V

Schoktty diodes have a retro use as well.
The new Fuzz boxes for electric guitairs use schoktty diodes for clipping. You actually get a tube over drive like sound. So much for this being an old fart page.

Make a full wave bridge detector out of schokties, you will have a crystal radio like no other.
It will blow a germamium diode detector out of the water. A full wave bridge detector of germainiums aint bad either.
73 MIKE

Maybe your kid will want to retrofit that crystal radio.
 
RE: Dead Electrical Dudes No. 4  
by KG4VCG on December 18, 2003 Mail this to a friend!
Mike,
Actually, whether or not Schottkies work better than germaniums depends upon the idiosyncracies of the set. Last years winner (Bosch) in the xtal radio dx contest used a pair of Agilent 5082-2835's, Schottkies, but previous winners used germaniums such as 12101 3RT's. My set, a Litz Wired double-tuned with a Tuggle front end, worked best with germaniums rather than Schottkies.
Go to crystalradio.us to see sets there and then click on to Owen Pool's Crystal Radio Resources to check out the sets used by contest winners in the past five years. You won't believe the complexity of Berthold Bosch's set in last year's contest.

The contest will be held Jan 30-Feb 9 of 2004. see crystalradio.us for the rules. It's a lot of fun. These sets aren't your grandfather's xtal radio sets. ;)
Gil/NN4CW
 
Dead Electrical Dudes No. 4  
by WA2JJH on December 18, 2003 Mail this to a friend!
TNX FER the XTAL radio link! Cool. I knew people built complex cystal radio's, but had no idea they had a contest/cult following. I will have to design one of my own.

Maybe I will use 4 ganged tuning caps. Each LC can have it's own full wave germainium bridge. Then sum all the outputs to a set of 2000 ohm superex headphones.

What kind of front end did you use? It had some name I never heard of.

TNX AGN & 73 DE MIKE
 
RE: Dead Electrical Dudes No. 4  
by AMATEUR2OO3 on December 18, 2003 Mail this to a friend!
The horse is dead. Let it alone. We can't take anymore. Why does the eham editors keep publishing these type of articles?
 
RE: Dead Electrical Dudes No. 4  
by KB9RHA on December 18, 2003 Mail this to a friend!
What's wrong? It's all in good fun! :D


Let me tell you something, after being an inactive amateur for a few years, I'm starting to get back into it and most of what I see portrays ham operators as having the following attitudes:

"I'm a ham operator. Here me roar."

"I know CW and you don't so go talk on your Radio Shack walkie talkie. We don't want to likes of you on OUR bands. Oh, and if you so much as peak it out, I'm gonna tell Mr. Hollingsworth on you!!!"

"We're God's gift to the world and we're the most important resource this country has."

See where I'm going? Articles like "Dead Electrical Dudes that make ALMOST everyone here laugh are great. The discussions where everyone doesn't end up in a flaming war are good reading. I wish everyone would just quit finding something to complain about. I thought it was impossible for anyone to be worse than this one group of people I have the displeasure of knowing where I work. Some ham operators really take the cake.

As long as Amateur Radio doesn't turn into a majority being self-proclaimed "kings" and know-it-alls, it can still be an enjoyable hobby. I'm hoping right now it's just a minority.

Happy Holidays!
Chris
 
RE: Dead Electrical Dudes No. 4  
by KA4KOE on December 18, 2003 Mail this to a friend!
OKAY gang, No. 5 is Ohm. Any suggestions for number 6?
We'll keep writing these as long as the positives outweigh the negatives and my house doesn't get rolled more than a couple of times.

MERRY CHRISTMAS!!!!!

Philip
 
RE: Dead Electrical Dudes No. 4  
by K5DVW on December 18, 2003 Mail this to a friend!
Uhh how about Faraday? Lorentz? Or Hertz (or did his last name used to be Cycle?)

Instead of "dudes" I suggest the more political appropriate "No longer biologically functioning, Electrical Science worker type, male gendered human persons".

Thank you.
 
Dead Electrical Dudes No. 4  
by WA2JJH on December 18, 2003 Mail this to a friend!
Chris is right on the money with the pathetic petty bickering. Seems that DED's attract a better group of ham.
A ham that is open to others. A ham that is more of a renniasance person.

Except for the one or two RENT-A-TROLLS, a decent exchange of idea's occures.

This is like a mini-book club on line. Glad I tought PHILIP everything he knows...hi-hi- just kidding of course!

Hmmmm Next DED to DO? Philip, how about ART COLLINS?


Happy Generic holiday wish's to All 73 DE MIKE
 
RE: Dead Electrical Dudes No. 4  
by KG4VCG on December 18, 2003 Mail this to a friend!
Mike,

Mike Tuggle, a ham from Hawaii, either invented or popularized the use of a double-ganged varicap to simultaneously tune both ground and an antenna coil which is then inductively coupled to the detector coil which is tuned with a separate varicap. With this set, he has snagged a.m. broadcasts stations as far away as Cuba from Hawaii. Most successful sets are variations on his set, the Lyonodne 17, which is described in detail and depicted at
http://crystalradio.net/

The above site also is a goldmine of info on xtal sets with dozens of old plans. Darryl also knows more about sound phones than anyone and has a huge collection with specs on the phones. Sound phones (Deck talkers, etc. The only power required is generated by voice vibrating a diaphram linked to an armature.) are superior in sensitivity to the old sets (Baldwins, Trimms) used in xtal radios. In order to match impedance, Darryl describes several transformer systems. If you need more info, email me at gilstacy@hotmail.com
73/Gil NN4CW
 
RE: Dead Electrical Dudes No. 4  
by N4ZYV on December 18, 2003 Mail this to a friend!
Any articles on Nathan B. Stubblefield?
 
RE: Dead Electrical Dudes No. 4  
by KA4KOE on December 18, 2003 Mail this to a friend!
Yes, it is true. I hereby confirm that my friend Mike Posner, WA2JJH, claims he taught me everything he knows.

My daughter and I built the Mystery Crystal Radio for a school project. We gave up on the galena and cat's whisker and settled for the 1N34 GE diode. I guess tickling that lil booger is an art. We didn't have a proper holder anyway. I am so proud of her.

AND THIS WAS STATE OF THE ART IN THE EARLY PART OF THE CENTURY. Amazing how much volume the lil sucker puts out into 2000 ohm cans.
 
Dead Electrical Dudes No. 4  
by N0FP on December 19, 2003 Mail this to a friend!
If anybody wants to see and actually key a spark gap transmitter, next time you are near Minneapolis, take a couple of hours to tour the Pavek Museum of Broadcasting. It is a grand tour of everything radio. I think it'll cost you $2 to get in and it's worth every penny!

One exhibit is the replica of the Titanic transmitter. While they have disconnected the L/C circuit to avoid taking out all neighborhood radios, the rest of the transmitter is intact, including the fabulous spark, the lightning-like snapping of the gaps, and the apparent smell of ozone in the air. It's pretty cool. They even let you key the old J-38.

While you are there, take in the vacuum tube exhibit, the military radio (US, German, and JAs) exhibit(s), the Collins 51J series exhibit, the Drake exhibit, plus the old super regens, super hets, crystal, etc., etc. If you ask, they will even take you through the fabulous back room of stuff that hasn't made it into an exhibit yet. It's great fun
 
Dead Electrical Dudes No. 4  
by WA2JJH on December 19, 2003 Mail this to a friend!
Boy geoge -IV your just a rent-a-troll. All you do is complain.
 
RE: Dead Electrical Dudes No. 4  
by KA4KOE on December 19, 2003 Mail this to a friend!
No. 6 is Count Alessandro Volta. I'm working on it now.
 
RE: Dead Electrical Dudes No. 4  
by WB2WIK on December 19, 2003 Mail this to a friend!
Isn't Marconi the guy who put a feather in his cap and called it Yankee Doodle?

Hope you have time to write one about Saddam the Engineer, ex-W0OPS, as in "I got caught, darn it." 'Course, he'd have to be dead first, but that's okay by me.



 
Dead Electrical Dudes No. 4  
by WA2JJH on December 19, 2003 Mail this to a friend!
Saddam a DED? Hmmmmm, like the dead part. He is a dude.
Problem is the electrical parameter. Well I guess electrotorture of thousands of innocents could count as that element.

Hang him after a FAIR trail, I guess he would then have passed element 1,2 and three to be a DED.
Albeit, a no code DED!

Many would be gratefull if Saddam was a DED.
Hey is that a greatfull dead dude!

73 DE MIKE
 
RE: Dead Electrical Dudes No. 4  
by KT4XF on December 20, 2003 Mail this to a friend!
K8QPW for #6
 
Dead Electrical Dudes No. 4  
by AMATEUR2003 on December 20, 2003 Mail this to a friend!
Hey Phil,

Just so you know, OLDFART13 is using the AMATEUR2OO3 with OO's.
Love the articles and maybe one day I'll figure this stuff out.

73 & Merry Christmas everyone
Be back in town after new year.

Ted "Teddy Bear"
 
RE: Dead Electrical Dudes No. 4  
by KA4KOE on December 20, 2003 Mail this to a friend!
Well, we always take nom de plumes with a grain of salt. Usually a cover so flames cannot be traced. Glad you enjoy these articles. Dunno how many I will do, but six is in the works. Perhaps cut it off at 10? Depends on the response of my infinitely tolerant readers.

With that, I hope everyone has a good holiday, Hanukkah or Christmas whatever your flavor.

Philip KA4KOE
Sheri KG4KTW
Sarah - Cracker Snatcher #1
Jordan - Cracker Snatcher #2
 
Dead Electrical Dudes No. 4  
by KE4MLL on December 20, 2003 Mail this to a friend!
I think these are great, keep it up. A little history and humor are greatly needed.
 
Dead Electrical Dudes No. 4  
by WA4OBJ on December 21, 2003 Mail this to a friend!
How about Philo T. Farnsworth? He is one of the holders of several TV patents that RCA (Sarnoff) later stole and used to become rich and famous. Some consider Farnsworth the inventor of TV as we know it.
 
RE: Dead Electrical Dudes No. 4  
by CWHATER on December 21, 2003 Mail this to a friend!
What a great article! Marconi was quite the "dude!" Keep the articles coming!

73s

Mr. C.W. Hater
 
Dead Electrical Dudes No. 4  
by KD6NXI on December 21, 2003 Mail this to a friend!
What is often failed to be pointed out is that Edison was experimenting with the basic principles first. He did not have time to work on radio though so he sold his patents to Marconi. This is almost never mentioned for some reason. Edison is responsible for so many things that he never received credit for.
 
RE: Dead Electrical Dudes No. 4  
by KA4KOE on December 21, 2003 Mail this to a friend!
OK kids, 6 is in the can and in the cue.
 
Dead Electrical Dudes No. 4  
by W2LEW on December 22, 2003 Mail this to a friend!
"Magoo you've done it again" For a serious read on Marconi check out http://ewh.ieee.org/reg/7/millennium/radio/radio_differences.html
 
RE: Dead Electrical Dudes No. 4  
by KA4KOE on December 23, 2003 Mail this to a friend!
Believe it or not, these are "serious". They're just chock full of interested facts and tidbits flavored for easy digestion!!!! Good link by the way.

tnx

P
 
Dead Electrical Dudes No. 4  
by KC0POY on December 23, 2003 Mail this to a friend!
Philip, I like your approach to these stories. Everyone should know that a bit of humor can make learning easier. Even though you present the facts humorously, there are still facts there that may stick in your mind, and be usefull at some later date. Lighten up everyone and enjoy the humor, and the facts.

My last tour of duty in the U. S. Army had me stationed at Coltano, Italy, a communications site with Autodin and Autovon, and there was a Satcom terminal there which had not been activated yet. The interesting thing, and the reason for my writing this, is that there was a monument in the parking lot at the site. The monument was there to mark the spot where Marconi had made the first trans-Atlantic transmission. The first time I saw it, is was quite unexpected.

I first became interested in ham radio in the early 50s, but didn't get around to getting a ham licence until this year. I am a tech. at present, but I passed the General written, and intend to get my code test and upgrade. Many argue that CW is dead, but remember, if you are ever in a situation (earthquake, tornado, etc.) where you need to pass emergency traffic, it is possible to get thru on CW when the QRM/QRN is too bad to support voice. My preference is voice, but I feel it is my duty to know and be prepared to use CW, if the need should arrise.

Everyone has their own preferences, and argueing about it achieves nothing. Enjoy what you like best, and let others do the same.

Have a Merry Christmas and a Happy New Year, everyone. Don.
 
Dead Electrical Dudes No. 4  
by WA2JJH on December 23, 2003 Mail this to a friend!
pHILIP, DUDE...Do not want to be rude, but it's getting time fo' another dead dude. Your stuff is offbeat, unusual,eductional, and maybe a little crude.

The jealous no brainers may cop an attitude.
Some are just a posing to be an english lit. prude.
The ones that are always nasty, shoud pop a quaalude.

Seems to me, you put in a lot of work.
While a very few have to come off as a jerk.
So keep on trucking with dead electrical dudes.
Do not give mind to the one or two that cop infintile attitudes.

Any thread you go will be those that live to troll.
They never use an address, because thier brains are made of guacamole!

You will always have a few thzt will a grown and moan about every reading of a thread.

Let me remind those that nobody is asking you to read with a gun to your head!

73 and a chucle MIKE the anti DR Seuss!
 
RE: Dead Electrical Dudes No. 4  
by KA4KOE on December 23, 2003 Mail this to a friend!
I do agree my dear friend Mike,
Some comments are full of spite.
But some are deep and thoughtful
And, on the whole, quite insightful.

I write these lil ditties late at night,
My bedraggled visage would give quite a fright.
Don't fret, more are due soon,
Their impact, perhaps will still be a boon.

Next up is Ohm, maker of the famous law,
Cutest formula I ever heard of or saw.

Then we have Volta, definer of electric potential,
Its utility all have found quite essential.

So fret no more, dear friends, all brave lads...
More of these DEDs are yet to be had.
Be good, don't bitch, and be good,
And just maybe Saint Nick will visit your 'hood.
 
Dead Electrical Dudes No. 4  
by WA2JJH on December 24, 2003 Mail this to a friend!
Hey Philip, our favorite RENT-A-TROLL sent a psuedo threatening maniacal QSL card to my office! GEESH...
like I am so scared(HI HI)

OK litle man, I will not comment on your trollings.
BTW USING YOUR QSL CARD FOR A THREAT IS NOT VERY BRIGHT! You crossed off your address. However a little
D.M.S.O removed the black magic marker cross out.

I thought I have seen everything stupid.

You do not make a very good terrorist. I did leave a copy at the 6th PCT.(you did break the law). If you want to come by the office in person, Smith and Wesson, and I will explain it to you.

I only started commenting about your antisocial trolls, when you attacted me in a EHAM forum, like you attack everybody else. I think you accused me of having MOB ties and being a racist slob.

What was the last line in your threat letter...
NO JOKE NO FORGINESS. clarify moron!
 
RE: Dead Electrical Dudes No. 4  
by OLDFART13 on December 24, 2003 Mail this to a friend!
>>>>by AMATEUR2003 on December 20, 2003
Hey Phil,
Just so you know, OLDFART13 is using the AMATEUR2OO3 with OO's.
Love the articles and maybe one day I'll figure this stuff out.
73 & Merry Christmas everyone
Be back in town after new year.
Ted "Teddy Bear" <<<<<<

Hey Teddy Bear, I have been on vacation the past week and just got back in town yesterday. I have no idea why it is that you make the assumption that I would make the post that you speak of. You have decided, in you infinite wisdom, that it could have only been me who made the previous post. It doesnít matter to me if you think I posted it or not really.

I used to post using my callsign but since some people did not agree with me they resorted to sending me nasty emails using vulgar language. I was referred to as an OldFart so many times that I decided to use it as a pseudonym. Even now because people donít agree with some of my stances they decide to berate my anonymous name. It is funny that some people will stoop so low.

Since you may not read this until after the new year, I hope that you have had a merry Christmas and I hope you have a safe, healthy and prosperous new year.
 
RE: Dead Electrical Dudes No. 4  
by K3UOD on December 24, 2003 Mail this to a friend!
I read a bio of Marconi many years ago. That book said that the coherer was originally designed as a lightning protector for telegraph lines. Marconi adapted it as a RF detector.

The first trans-Atlantic transmission originated in the UK, not Italy.

The bio I read also said that Marconi used two large copper kettles as "dishes" to direct VHF (220 MHz) signals. He placed the receiver in one and the transmitter in the other. The receiver only detected the signal when the openings of the kettles were facing each other. He thought that the military might be interested in this technique for clandestine operations.

Note, Marconi first tried to interest the Italian government in his invention but they dismissed it as a toy. The British government immediately saw it's usefulness in communicating with their ships at sea. That is why, to this day, Marconi Corporation plc is a British company.

This is a great series, keep up the good work.

Consider doing one on Hans Christian Oerstead and how his lecture on the non-existence of electromagnetism backfired.
 
Dead Electrical Dudes No. 4  
by WA2JJH on December 25, 2003 Mail this to a friend!
That 220MHZ kettle trick sounds familair.
I heard they were putting spark gaps in dishes.
Some of the high harmonics were in the 400-500MHZ band.

In other words they were doing microwave experiments
way back then.

Back then, anything over 300MHZ Was considered microwave rather than UHF. The first radar used 10 meters.

500Mhz is also called T band. T band is your first microwave band. Why we have c band-3ghz, KU-13ghz, s and x band-10ghz follows no protocol.

The letter deignation seems arbitrary. If some one knows why our radio for-fathers labled the microwave
bands with no ryme or reason...let me know.

Sorry for my outburst. One of our regular trollers/borderline personalities sent a threatening QSL card to my place of employment. I AM NOT SCARED,I AM ANGRY ! This chump has a P.O. box for an address.

Anyway merry Xmas de MIKE
 
RE: Dead Electrical Dudes No. 4  
by KA4KOE on December 26, 2003 Mail this to a friend!
Just finished reading "Man of High Fidelity" by Lessing. Interesting fact....

Armstrong was a pallbearer at Nikola Tesla's funeral.

P
 
RE: Dead Electrical Dudes No. 4  
by W9WHE on December 26, 2003 Mail this to a friend!
My 5 year old daughter prefers her Marconi with cheese!
 
RE: Dead Electrical Dudes No. 4  
by K3UOD on December 26, 2003 Mail this to a friend!
Mike,
Here is a link with a plausible explanation of the WWII RADAR band designations:

http://www.warships1.com/index_tech/tech-046.htm

There is one minor error in the article in that the "new" band designations are for electronic warfare use only. Radar designers still use the old IEEE designations.

Jerry
 
Dead Electrical Dudes No. 4  
by AB2PN on December 26, 2003 Mail this to a friend!
Hmmmmm

I could have sworn that Nikola Tesla invented radio...

 
RE: Dead Electrical Dudes No. 4  
by KA4KOE on December 26, 2003 Mail this to a friend!
Tesla did come up with the basic devices for radio, as Marconi lost in the supreme court in the 1940's, long after it really mattered.

Marconi, however, came up with the first viable signalling system, and thats what we celebrate. Read carefully, my friend!!!

I hope Sandy Claws wuz good to all 'ya.

PAN
 
Dead Electrical Dudes No. 4  
by WA2JJH on December 26, 2003 Mail this to a friend!
I guess the point is no one person invented radio.
I think it was Maxwell proved radio could be done.
He took a high voltage source and made a loop with a gap in it. When another wire loop the same size was with in a few feet, a voltage was induced it it.

Also interseting that some of these dead radio dudes knew of each others work. Built upon each others work.
And, yes just outright gave no credit to the others.

TNX to the OM that explained the microwave band designations. It would make sense that IEEE stuck with old military arbitrary frequency designations.

One of the first experiments uusing RF as radar happened by accident around 30MHZ.

Two engineers had a TX and an RX across a river. When a boat would pass by, they noticed the signal dipped sharply. They had no idea why. This was way before Flemming and the English very early Radars.

73 DE MIKE
 
Dead Electrical Dudes No. 4  
by WA2JJH on December 27, 2003 Mail this to a friend!
Actually, it was Hertz AKA cycle, that had a secondary
loop emit a spark a few feet awat from a Ford coil with a spark gap.

This also proved to back up the concept of resonance. The passive coil had to be the same size and dimensions of the active/primary coil.

That radio museum with the working spark gap transmitter sounds interesting. There is also an Armstrong museum neat the grounds of Armstrongs first
FM stereo transmitter.

One of the locations being considered to replace the detroyed WTX transmitting complex is on the same mountain that Armstrong had his first antenna.

A very fitting tribute. If that is the site picked.
It would beat the landfill idea they had for a transmitter/antenna complex for the NYC area.
 
RE: Dead Electrical Dudes No. 4  
by KB8LAC on December 27, 2003 Mail this to a friend!
You guys ever hear of a guy named Tesla who transmitted RF long before Marconi?
 
RE: Dead Electrical Dudes No. 4  
by KA4KOE on December 27, 2003 Mail this to a friend!
Actually, Heinrich Hertz transmitted RF before anyone, in his classic experiment that proved electromagnetic waves exist, as predicted mathematically by James Clerk Maxwell.

Hmmmm.
 
RE: Dead Electrical Dudes No. 4  
by KT3K on December 29, 2003 Mail this to a friend!
Once again, coolness.
KT3K
 
RE: Dead Electrical Dudes No. 4  
by KC8VWM on December 30, 2003 Mail this to a friend!


>>>You guys ever hear of a guy named Tesla who transmitted RF long before Marconi? <<<

Well, since your asking... yes! Nikola Tesla was featured as "Dead Electrical Dewd No.2"

Go here:

http://www.eham.net/articles/6962


73

Charles - KC8VWM
 
RE: Dead Electrical Dudes No. 4  
by SM0AOM on December 30, 2003 Mail this to a friend!
The seed for the microwave band designators comes from the earliest work in centrimetric-wave radars.

The 3 GHz/10 cm airborne radar set built in England in 1941 was codenamed H2S, and its frequency range became known as "S-band". When an improved version with higher resolution in the 10 GHz/3 cm band was designed two years later by MIT's Radiation Laboratory it was codenamed H2X, and consequently its frequency range became "X-band".

Post-war radar development used other frequencies than the S and X bands, so other letter designators were picked for security reasons. These eventually became of everyday use, so for convenience standards bodies such as the IEEE adopted their usage.

KA4KOE:
Keep up the good work!

73 and Happy New Year/

Karl-Arne
SM0AOM
 
RE: Dead Electrical Dudes No. 4  
by K4JSR on January 4, 2004 Mail this to a friend!
Just remember that Radar dudes came up with the
"main bang" before the ded star gazer dudes came up with with "the big bang". I think I'll go back to my
padded hamshack and just multi-pactor for a while!
Look out for stray photons!
Phase shifters for industry! Phase shifters for the ded!
Didja hear the one about the stripper who was also a
u wave engineer? She really had a "magic" tease!
73, Cal K4JSR






 
Notice  
by KA4KOE on July 26, 2004 Mail this to a friend!
Dead Electrical Dudes are
© 2004 Philip Neidlinger
 
Dead Electrical Dudes No. 4  
by W4SET on February 9, 2005 Mail this to a friend!
My hero, TESLA, invented radio!
 
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