October 1954 Popular Electronics
[Table of Contents]
People old and young enjoy waxing nostalgic about and learning some of the history of early electronics. Popular
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Here is the very first episode of the "Carl & Jerry" series
that ran for many years in Popular Electronics magazine.
In the manner of The Hardy Boys, Nancy Drew, et al, Carl and
Jerry are two teenage boys who, in their pursuit of their electronics
hobby, manage to get themselves involved in crime scene investigations,
in odd situations with friends and adults, and even while horsing
around in their basement laboratory. Amateur radio was a key
feature of many of their adventures. John T. Frye authored every
adventure as he developed his sleuthing buddies over time to
go from a frumpy Jerry Bishop with a "well-padded frame" and
Farside-esque bespectacled Carl Anderson to a couple more
stealthy, professional looking investigators who sometimes employed
MacGyver-like tactics during their antics. See the bottom
of this page for a link to a new set of books that contain every
installment of Carl & Jerry.
Carl & Jerry: A New Company is Launched
By John T. Frye
Jerry Bishop was in his basement "laboratory,"
but the teenager was not exactly laboring. Instead, with his
well-padded frame stretched out comfortably on a leather couch,
his dark crew-cut pillowed on his clasped hands, and his round
face staring vacantly up at the ceiling, he was listening blissfully
to Patti Page inviting him to "Cross Over The Bridge." The invitation
was being issued by a spinning record on a player resting on
the floor beside the couch. The throbbing volume that issued
from a speaker cabinet in the corner was just barely below the
threshold of pain.
Suddenly, riding over Patti's dulcet
tones, there came a strong youthful voice saying with great
deliberation, "One, two, three. four test. This is W9EGV testing.
One, two, three, four."
Jerry was a firm believer in
the conservation of energy; so it was strictly in character
that his only immediate reaction to this surprising development
was to bat his eyes rapidly like a toad in a hailstorm and continue
to listen. Only after the voice continued its rude accompaniment
of the singer, now and then alternating the counting and alphabetical-numerical
mumbo jumbo with shrill whistles such as one uses in calling
a dog, did the boy finally turn over on his side and experimentally
lift the needle from the record. As he did this, the singing
stopped abruptly; but the strange voice went right on proving
it could count - at least as far as four.
on the record," was Jerry's brilliant muttered deduction. He
heaved himself to his feet and walked over to the phono-amplifier
sitting on a workbench and turned it off. The voice dropped
in volume, but it did not disappear. Instead its source switched
from the speaker to the open basement window.
to get to the bottom of the mystery, Jerry padded up the outside
basement steps and stood in the back yard listening. The voice
clearly came from an open upstairs window of the house next
door, a house into which new neighbors had just moved the day
before. As Jerry stared upward, debating his next move, a boy's
reddish-tinged curly blond head popped out of the window. He
was holding a microphone in his hand and was looking upward
at a wire that ran from the top of the window frame to a tree
back near the alley.
"Hey, you, what do you think you're
doing?" Jerry demanded.
The head in the window turned
and stared disinterestedly down at Jerry with. a pair of bright
blue eyes behind horn-rimmed glasses.
"I don't 'think';
I know what I'm doing," the boy in the window replied coldly.
"I'm seeing if my amateur transmitter will load up this new
antenna I've put up."
"As loud as you were yelling,
you wouldn't need a transmitter," Jerry observed tartly.
"I wouldn't have to yell if some dope wasn't running his
platter-player wide open. Was that you?"
that," Jerry said hastily.
"What I want to know is how
come I'm picking up what you say into that microphone on my
"Are you ?" the new boy said with quick
interest. "Wait a minute and I'll be over."
In a few
seconds he burst out the back door and vaulted easily over the
low fence between the yards. His tall, lean, well-muscled figure
was clothed in a pair of baggy-pocketed army fatigue pants and
a torn sweat shirt.
"My name's Carl Anderson," he offered.
"Guess we're neighbors. What's your handle?"
"Handle?" Jerry repeated with a puzzled look.
I mean your name. That's ham talk."
"Oh, I'm Jerry Bishop.
Come on down into my lab, and I'll show you the player."
As the two boys stepped inside the basement door, Carl stopped
and took a searching look around. The first thing that caught
his eye was the fine wide workbench that ran clear across one
end of the room. On a board above the bench was a miscellaneous
collection of hand tools. Carl walked over and disapprovingly
ran a finger along the edge of a snaggle-toothed handsaw and
inspected a pair of screwdrivers with broken, twisted bits and
battered handles. Then he turned his attention to the amplifier
sitting on the end of the bench and followed with his eye a
long line from the amplifier to the record player sitting on
the floor by the couch across the room. Another line went from
the amplifier to what looked as though it might be a birdhouse
for an ostrich sitting over in a corner of the room.
"That's my bass-reflex cabinet," Jerry announced. "I built
Carl walked over to the crude speaker cabinet
and examined it closely.
"Did you really manage to saw
those boards that crooked or have you got a pet beaver that
gnaws them off like that?" he inquired disparagingly.
"So I can't saw straight!" Jerry admitted with a good natured
grin; "but take a listen."
As he said this, he turned
on the amplifier. The whole basement was flooded with a sea
of music. The volume was so great that the whumping of the bass
drum actually made the tools jangle on the tool board.
strode over and turned the volume down to a mere roar.
"It doesn't sound too bad," he grudgingly admitted, "but
I'll never know why. I never saw a more haywire layout. That
long lead from the player to the amplifier is what is picking
up my signal. Wait until I get my solder gun and a capacitor
and we'll see if we can cure it."
He took the cellar
steps two at a time as he said this; and Jerry, exhausted by
the sight of so much energy, sank back on the couch to await
his return. He did not have long to wait, for in a minute Carl
was back, carrying a device that looked like a Buck Rogers ray
gun in one hand and a little brown Bakelite object with two
wire leads coming out of it in the other. In a flash he had
the amplifier turned over and was probing around in the wiring
with the tip of the solder gun as he explained:
trouble is caused by the strong signal from my transmitter collecting
on the input element of the first amplifier tube."
mean on the grid?" Jerry asked. Carl shot a surprised look at
him and went on, "That's right. This strong radio frequency
signal upsets the normal operating conditions of the tube and
makes the amplifier act more like a radio receiver than a plain
amplifier. I'm going to connect this small condenser - capacitor
is a more accurate name - between the grid of the first tube
and the chassis so that signals from my transmitter will be
bypassed to ground -"
"And then," Jerry smoothly interrupted,
"the grid will no longer be swung positive on peaks, grid rectification
will stop, and the tube will cease to be biased by grid leak
action to the point where it acts as a detector."
where'd you learn that electronic jive?" Carl demanded. "You
got a ham ticket?"
"Nope," Jerry answered, vastly pleased
at the impression he had made on his new neighbor. "And don't
be afraid I'll steal too much of your thunder." He walked over
to a bookshelf on the wall that, in contrast to the workbench,
was in perfect order. On it were a few books of elementary physics
and several stacks of radio magazines.
"I get a large
charge out of reading anything about electricity or electronics,"
he explained. "It just happens that the last issue of the magazines
in this stack contained an explanation of how radio signals
could cause interference to audio amplifiers; so that is why
I had that one little item so pat."
"Well, all right,"
Carl remarked as he finished soldering in the capacitor and
turned the amplifier on. "We hams get so used to people not
understanding what we're talking about that it makes us feel
funny when we hear a stranger spouting our lingo. Now let's
try this thing. Leave the needle off the record and keep listening
at different positions of the gain control. I'll dash over and
turn on the rig and put out a test."
As he said the
last word he was already halfway up the steps. Soon Jerry could
hear his voice coming faintly through the basement window; but
no setting of the amplifier gain control caused the voice to
be heard in the speaker.
"The operation is a success,
Doctor," he yelled out the window. "Come on back.
he remarked as Carl came back into the basement and perched
himself on the workbench, "what was that you were saying about
seeing if your transmitter would 'load up' your new antenna?"
"That's right. This antenna is cut for 3950 kilocycles,
according to my figuring, and I wanted to make sure it would
take energy from the transmitter."
"What would keep
it from it?"
"Being the wrong length. A .transmitting
antenna has to be the proper length so that it will resonate
at the frequency of the transmitter before it will accept power
from the transmitter."
"How do you calculate the proper
"There's a formula for it, but I just use a
table in the Radio Amateur's Handbook. It says the proper length
is 118 feet and six inches."
"Don't you wonder about
the reasons behind those tables?" Jerry asked curiously.
"Not me. I just want to know how things work, not why. All
I know is that an antenna should be roughly a half wavelength
long for good transmission or reception of a given frequency."
"H-m-m," Jerry reflected, "that reminds me of sound
waves. I remember in physics class we found that if an open-ended
tube was to be resonant at the frequency of a tuning fork, it
had to be a half wavelength long at the fork's frequency. Just
for kicks, let's see if radio and sound waves can be handled
the same way. First off, if we divide the speed of a wave motion
by the frequency of the waves, we get the length of each wave;
Carl wrinkled his brow in deep concentration.
"I guess so," he finally agreed hesitatingly. "If we knew how
many feet a minute a freight train was moving and divided that
by the number of identical cars that passed in a minute, we'd
get the length of each car. I guess it would be the same with
"Exactly. We also know that light and radio
waves scamper along at a speed of 300,000,000 meters-per-second,
and we have the frequency you are shooting at as being 3950
kilocycles or 3,950,000 cycles-per-second. Check?"
"Double check," Carl agreed. "We can lop those three ciphers
off each number and divide 300,000 by 3950. You got a pencil
and piece of paper?"
Without answering Jerry dug down
in the litter of papers and books piled on the end of the couch
and came up with a cheap and battered slide rule which he began
to manipulate with a few extra flourishes strictly for the benefit
of his guest.
"The answer," he finally announced with
all the importance of a Supreme Court Judge handing down a fateful
decision, "is very close to seventy-six meters."
getting warm!" Carl said excitedly. "This band I'm working is
called the Seventy-Five Meter Phone Band."
antenna is going to be a half wavelength long, we chop seventy-six
in two and get thirty-eight meters," Jerry continued. "A foot
equals .3048 meter; so we divide 38 by .3048, and the good old
slip-stick says -" he paused to work the slide rule again, "exactly
124.5 feet," he finished weakly.
"The good old slip-stick
- or the guy slipping it must have slipped," Carl jeered. "That's
too far off 118.5 feet to be right - say!" he suddenly broke
off as he struck his forehead with a clenched fist, "I remember
reading somewhere that a half wavelength resonant conductor
is always somewhat shorter than an actual half wavelength in
free space. It's shorter by about 5%. Try taking 50% off that
and see what you get."
"Five percent of 124.5 is close
to six feet, and 124.5 feet minus 6 gives us precisely 118.5
feet," Jerry announced triumphantly.
"Whew! I'm glad
that's over," Carl said as he bent forward and mopped his face
with the slack in the front of his sweat shirt. "This brain
wrestling is harder. on me than playing in a double overtime
He and Jerry grinned at each other with the mutual
satisfaction that comes from having joined in a successful operation.
"Say," Carl began hesitantly, "I've got an idea but
if you don't like it, just say so. My feelings won't be hurt.
Here's the way I look at it: both of us are interested in electronics.
You like to read and think about it; I like to experiment and
build things. You've got a dandy place to work but not much
equipment. I've got a ham station, a voltohmmeter, and a whole
box of radio parts, but no place to work except my bedroom.
You're good on math and theory where I am weak, but you do not
seem to be too good with tools -"
"Let's face it: I'm
about as clever as a cow with a crutch with tools," Jerry admitted
"I like tools and like to work with them,"
Carl went on. "To cut it short, how's about our sort of joining
forces and working together? Maybe I'm wrong, but I think it
would be a lot of fun. But if you don't like the idea -"
"I'm with you!" Jerry exclaimed. "A hobby is twice as much
fun when you've got someone to work and argue with. As far as
I'm concerned, we're in business. What'll we call ourselves?
It's got to be something that sounds serious and imposing."
"Natch," Carl agreed. "How about 'Electronic Experimenters,
"Let's change that 'Inc.' to 'Ltd.' " Jerry
suggested. "Somehow it sounds more swanky."
get out my mechanical drawing set and make up a sign for over
the basement door tonight," Carl said with mounting enthusiasm.
For a minute the two stood looking at each other, half
serious, half joking. Then Jerry stuck out his hand. "Want to
shake on it, Pardner?"
Instantly his plump hand was
grasped by Carl's sinewy fingers.
"Here's to 'Electronic
Experimenters, Ltd.' "
Carl & Jerry: Their Complete Adventures is now available. "From 1954 through 1964,
Popular Electronics published 119 adventures of Carl and Jerry, two teen boys with a passion for electronics and a knack
for getting into and out of trouble with haywire lashups built in Jerry's basement. Better still, the boys explained how
it all worked, and in doing so, launched countless young people into careers in science and technology. Now, for the first
time ever, the full run of Carl and Jerry yarns by John T. Frye are available again, in five authorized anthologies that
include the full text and all illustrations."
Carl & Jerry Episodes on RF Cafe
- Carl & Jerry: Anchors Aweigh, July 1956
- Bosco Has His Day, August 1956
- The Hand of Selene, November 1960
- Feedback, May 1956
- Abetting or Not?, October 1956
- Electronic Beach Buggy, September
- Extra Sensory Perception, December
- Trapped in a Chimney, January 1956
- Command Performance, November 1958
- Extracurricular Education, July
- Treachery of Judas, July 1961
- The Sucker, May 1963
- Stereotaped New Year, January 1963
- The Snow Machine, December 1960
- Extracurricular Education, July
- Slow Motion for Quick Action,
- Sonar Sleuthing, August 1963
- TV Antennas, August 1955
- Succoring a Soroban, March 1963
- "All's Fair --", September 1963
- Operation Worm Warming, May 1961
- The Crazy Clock Caper, October 1960
- Two Detectors, February 1955
- Tussle with a Tachometer, July 1960
- Therry and the Pirates, April 1961
- The Sparkling Light, May 1962
- Pure Research Rewarded, June 1962
- A Hot Idea, March 1960
- The Hot Dog Case, December 1954
- A New Company is Launched, October 1956
- Under the Mistletoe, December 1958
- Electronic Eraser, August 1962
- Blubber Banisher, July 1959
- "BBI", May 1959
- Ultrasonic Sound Waves, July 1955
- The River Sniffer, July 1962
- Ham Radio, April 1955
- El Torero Electronico, April 1960
- Wired Wireless, January 1962
- Electronic Shadow, September 1957
- Elementary Induction, June 1963
- He Went That-a-Way, March1959
- Electronic Detective, February 1958
- Aiding an Instinct, December 1962
Posted January 10, 2014