December 1962 Popular Electronics
Wax nostalgic about and learn from the history of early electronics. See articles
published October 1954 - April 1985. All copyrights are hereby acknowledged.
By 1962, John T. Frye's techie
troubleshooting teenagers Carl and Jerry had graduated from high school and were
attending Parvoo University (PU?) as electrical engineering students. It was a natural
progression. Unlike many of the company names and products - like the
Delco DN278 transistor mentioned here - that appeared in the
Popular Science series, the college's name is fictional. Maybe author Frye
had a connection to
Porvoo, Finland, and Anglicized the name. I ran "parvoo" through
a couple online anagram solvers to see if it was a disguised name (which would be
apropos for a detective story) and the closest it came to a real word is "vaporo," which is
term for "vapor" or "steam." Poovar is a town in India, but that is an unlikely inspiration as well. Anyway, in this installment of Carl & Jerry, the scholastically-inclined
duo delve into the physics behind some animals' ability to sense geographical direction
and navigate accurately across long distances.
Update -- RF Cafe visitor Jim Pollock, of Solon, Ohio,
wrote: "In regard to the Carl & Jerry story and Parvoo University consider the
following. The stadium in the story is Moss-Ade stadium. The stadium at Purdue
University is Ross-Ade stadium. I would guess that Parvoo comes from Purdue."
According to a search I did to determine whether Frye ever attended Purdue, "Remarkably
enough, he never attended Purdue University, but instead studied at the University
of Indiana, Columbia University, and the University of Chicago." Frye lived at
1810 Spear Street, Logansport, Indiana, most of his life. Just
another note; looking at Google maps, the Ross Ade stadium at Purdue does have the
open end facing SSE as noted in the story. (credit to
Carl & Jerry: Aiding an Instinct
By John T. Frye W9EGV
Carl and Jerry met at the entrance to the H-3 Residence Hall of Parvoo University.
"Where've you been?" Jerry asked his chum as they climbed the stairs to their
"Oh, just goofing off over at the Sweet Shop," Carl replied. "One of the guys
had a letter from a pal at an Eastern school, and there was a cute story in it.
Seems a professor at this college was conducting a small graduate class of nine
students. The prof did a considerable consultation business, and having to lecture
at a particular time each day often cut into this lucrative sideline. So he conceived
the idea of tape-recording his lectures and having his secretary take the recorder
to the classroom each day and start it.
"About a week after this system was put in effect, the prof happened to be in
the classroom building during the hour he was supposed to be lecturing, and he decided
to check on how things were going. As he stood outside the closed door of the classroom,
he was pleased to hear his own voice droning away inside; but when he opened the
door, not a living soul was present. Instead, his recorder was talking away on his
desk, and grouped around it were nine other recorders taking down every word!"
"That's a good one," Jerry chuckled, "even if it's not true - which it probably
isn't. What other earth-shaking topics were discussed at the Sweet Shop?"
"A psychology student, who is also a homing pigeon nut, was boasting about the
marvelous sense of direction of his birds. He claimed that he carried a pigeon in
a light-tight box mounted on a turntable revolving about 2 rpm fifty miles from
home, and then when he released it, the bird made one little circle and started
in a beeline for its loft. Which brought up the fact that bees have this built-in
radar, or whatever it is. I had to open my big mouth and suggest that some men may
have the same instinct. I pointed out that I had never been confused about directions
in my whole life and I wasn't ready to concede supremacy in anything to a bird brain.
"At that, this guy, Otis, and three other psych students started
pooh-pooh'ing me, and I got a little hot under the collar. Before I knew it I was
involved in a wacky wager. Tomorrow night we're all going out to the football stadium.
They will blindfold me, and I'm to walk out into the middle of the stadium, turn
around, and go straight back to where I started. If I fail, I have to wear a Daniel
Boone coonskin cap, complete with tail, for a whole week; but if I succeed, all
four of the psychoceramics - crackpots to you - have to flutter their elbows and
make pigeon-like cooing noises every time I snap my fingers in their presence, also
for a whole week."
"How did D. Boone get into the act?"
"One time someone asked him if he had ever been lost. He said no, he had never
been lost, but he was bewildered once for three days. The guys claim I'll be singing
the same tune after tomorrow night."
As Carl finished speaking, he rolled up a pants leg and tenderly felt a barked
shin. Replying to Jerry's questioning look, he shamefacedly admitted:
"I decided to make a little test run after I left the Sweet Shop; so I went out
to the stadium, blindfolded myself, and tried to walk out into the center and back.
I ended up in the bleachers clear down at one end. Do you think I'll look better
with the tail of that cap hanging straight down the back or kind of over one shoulder?"
"Don't give up so easily! You were stupid to get into an argument with those
psych boys on their own ground; but now you're in it, you have to do all you can
to uphold the honor of the engineers. Maybe we can rig up some sort of electronic
aid for your feeble homing instinct."
"If we do, we're going to have to be pretty sly about it. Those boys know about
us, and they warned me that they won't stand for any electronic hanky-panky. They'll
probably frisk me before I take the test."
"Hm-m-m, that complicates matters," Jerry mused; "but I wonder - here, take a
look at this," he broke off, and began sketching a simple circuit on a scratch pad.
"This is a gadget I found an electrician using to locate conduit in a motel where
he was installing air-conditioning units. I talked him into letting me peek inside
the little box and sketch the circuit.
"As you can see, the circuit consists of a "Delco 2N278 transistor
connected as an r.f. oscillator self-modulated by an audio blocking network. It's
powered by a 67 1/2-volt B battery. To use it, you tune the oscillator to a dead
spot in the broadcast band and clip this antenna lead to an outlet box. Then you
employ any portable radio receiver to pick up the tone-modulated signal radiated
from the conduit a few feet into surrounding space or earth.
"The electrician said it was a dandy gadget for locating buried or cement-encased
conduit. I've had all the parts here in my desk for three months, and I think now's
the time to build it. Let's get busy."
"If you say so," Carl agreed, "but I don't really see how that thing is going
The little instrument was simple to construct, and the boys soon completed it.
They checked it out by connecting it to an outlet box in their room and tracing
the wiring around the building with a transistorized receiver. The tone could be
picked up anywhere in H-3 whenever the receiver was brought near a concealed conduit.
"Now let's put on our coats and give it the acid test," Jerry suggested.
A few minutes later they were standing inside empty Moss Ade Stadium.
Parvoo campus was always the coldest place in the state, and the empty, U-shaped
stadium was the coldest place on the campus, with a damp, bone-chilling wind blowing
into the mouth of the U from the south-southeast.
Jerry clipped the antenna lead of the gadget to an outlet receptacle in the press
box and began to walk along the edge of the football field, stooping over and holding
the little transistor radio only a foot or so from the ground.
Suddenly he stopped and exclaimed, "Ah, there it is! I was hoping a conduit might
run across the field. Take the receiver and trace it across. You're the one who's
going to need the practice."
Carl obediently took the receiver and started tracing the buried conduit out
across the field. As long as the receiver was held within a few inches of the frozen
ground, the signal came in clearly; but if the receiver was raised or moved a couple
of feet to either side of the buried pipe, the sound diminished rapidly. It was
soon evident that the conduit ran straight across the field.
"That's that; let's head for home," Jerry said, through chattering teeth. "We
still have some camouflaging work to do."
Back in their room, the boys worked out the rest of the details for their plan,
and then they studied until after midnight to make up for lost time. They liked
fun as much as any boys, but they never forgot they were at Parvoo to get an education.
Studies came first with them.
Carl and Jerry were sitting quiet-ly in their room the next evening when the
four psychology students knocked. The latter did not stand on ceremony but quickly
and efficiently began to frisk Carl for any possible hidden electronic equipment.
Otis, their short, bespectacled leader, even turned the pockets of Carl's overcoat
wrong-side-out and went carefully over the lining feeling for suspicious lumps.
The tail of a coonskin cap hung casually out of Otis's own coat pocket.
"Well, if you suspicious jokers are satisfied, let's get going," Carl said as
he picked up his four-buckle arctics standing by the door and began putting them
on. As he carefully tucked his pants legs inside the big and clumsy overshoes, he
deftly plugged a little wire peeping from a pants cuff into the earphone jack of
a very small transistorized receiver concealed in a black cloth pocket sewed to
the inside of the top of the right arctic. The thin, flexible, two-conductor cable
ran up his pants leg, through his shirt, up the right sleeve, and terminated in
a tiny earphone taped to the inside of his biceps.
The group of boys went out the back into a night in which a few scattered snowflakes
were just beginning to fall. The windows of H-2 and H-1 were glowing brightly as
they passed, and off to the right they could see the tower of the Men's Quadrangle.
Carl was careful to be in the lead as they entered the stadium, and he stopped directly
at the point where he knew the buried conduit started across the field.
Three different blindfolds were tied across Carl's eyes; and then, at a pre-arranged
signal, three of the boys grabbed Jerry, threw him to the ground, and sat on his
outstretched arms and feet.
"Just making sure there's no collusion between you two," Otis explained with
a grin. Jerry was thanking his lucky stars that he had had the foresight to attach
the gadget to the conduit and turn it on just before supper. Since it only drew
about five mils, it should still be going strong.
At a command from Otis, Carl crossed his arms over the top of his head and started
out through the drifting snowflakes. He moved with a most peculiar gait; the right
foot slid over the ground as though shod with a snowshoe while the stepping was
done with the left foot. At first he moved slowly and hesitantly, but then he seemed
to gain confidence and moved more briskly.
Seeing that Carl deviated very little from a perfectly straight line across the
field, Otis held a finger to his lips for silence, then moved stealthily around
the rim of the semi-bowl until he was some fifty yards from the point at which Carl
had started. By this time the blindfolded youth was two-thirds of the way across
"Okay, Carl; let's see you turn around and come back," Otis called loudly.
Tricked by the direction of the voice, Carl turned toward Otis and took a couple
of steps in that direction. Suddenly he stopped short, realizing that something
was wrong. As his crossed arms held the concealed earphone more tightly against
his ear, he slid his extended right foot experimentally from side to side. When
the signal which was being radiated from the length of buried conduit revealed the
whereabouts of the pipe, he turned away from Otis and began retracing the path he
had followed coming out into the field.
In a few minutes, he stumbled into Otis, who had come back and was standing right
at the point from which Carl had started.
"Okay," Otis said as he helped Carl off with the blindfolds, "you win, but I
still think there's something fishy about how you did it. What's with this business
of holding your arms over your head?"
"I was making a loop out of my arms to pick up the earth's magnetic currents,"
Carl told him with a mocking grin.
Jerry had been released and was trying to beat some circulation back into his
numbed arms. "You couch-boys just don't appreciate how smart we double-E's are,"
Out of the corner of his eye, Carl noticed Otis surreptitiously trying to tuck
the dangling coon tail back into his coat pocket. A beatific smile spread over Carl's
features, and his long arm shot above his head while his fingers snapped sharply.
The four psychology students exchanged sheepish glances. Then each of them began
to wave his elbows in a ludicrous imitation of fluttering wings while a discordant
chorus of "coo-coo-coo-coo" came from their throats!
Carl Anderson and Jerry Bishop were two teenage boys whose
love of electronics, Ham radio, and all things technical afforded them ample opportunities
to satisfy their own curiosities, assist law enforcement and neighbors with solving
problems, and impressing – and sometimes toying with - friends based on their proclivity
for serious undertakings as well as fun.
Carl & Jerry, by John T. Frye
Carl and Jerry Frye were fictional characters in a series of short stories that
were published in Popular Electronics magazine from the late 1950s to the early
1970s. The stories were written by John T. Frye, who used the pseudonym "John T.
Carroll," and they followed the adventures of two teenage boys, Carl Anderson and
Jerry Bishop, who were interested in electronics and amateur radio.
In each story, Carl and Jerry would encounter a problem or challenge related
to electronics, and they would use their knowledge and ingenuity to solve it. The
stories were notable for their accurate descriptions of electronic circuits and
devices, and they were popular with both amateur radio enthusiasts and young people
interested in science and technology.
The Carl and Jerry stories were also notable for their emphasis on safety and
responsible behavior when working with electronics. Each story included a cautionary
note reminding readers to follow proper procedures and safety guidelines when handling
Although the Carl and Jerry stories were fictional, they were based on the experiences
of the author and his own sons, who were also interested in electronics and amateur
radio. The stories continue to be popular among amateur radio enthusiasts and electronics
hobbyists, and they are considered an important part of the history of electronics
and technology education.
- Going Up
- March 1955
Shock - September 1955
- A Low Blow
- March 1961
- The Black
Beast - May 1960
Electronik, September 1958
- Pi in
the Sky and Big Twist, February 1964
Bell Bull Session, December 1961
Boogie, August 1958
- TV Picture,
Eraser, August 1962
Trap, March 1956
at Work, June 1956
Aweigh, July 1956
Has His Day, August 1956
- The Hand
of Selene, November 1960
or Not?, October 1956
Electronic Beach Buggy, September 1956
Extra Sensory Perception, December 1956
in a Chimney, January 1956
Performance, November 1958
of Judas, July 1961
- The Sucker,
New Year, January 1963
Snow Machine, December 1960
Extracurricular Education, July 1963
Slow Motion for Quick Action, April 1963
Sleuthing, August 1963
- TV Antennas,
a Soroban, March 1963
Fair --", September 1963
Worm Warming, May 1961
Great Bank Robbery or "Heroes All" - October 1955
Operation Startled Starling - January 1955
- A Light
Subject - November 1954
Teaches Boy - February 1959
- Too Lucky
- August 1961
and Jeopardy - December 1963
Santa's Little Helpers - December 1955
Tough Customers - June 1960
Pocket Radio, TV Receivers
Yagi Antennas, May 1955
Stomping, March 1962
- The Blubber
Banisher, July 1959
- The Sparkling
Light, May 1962
Research Rewarded, June 1962
- A Hot Idea, March
- The Hot Dog
Case, December 1954
New Company is Launched, October 1956
the Mistletoe, December 1958
Eraser, August 1962
- "BBI", May 1959
Sound Waves, July 1955
- The River
Sniffer, July 1962
- Ham Radio,
Torero Electronico, April 1960
Wireless, January 1962
Electronic Shadow, September 1957
Induction, June 1963
- He Went
Detective, February 1958
an Instinct, December 1962
- Two Detectors,
with a Tachometer, July 1960
and the Pirates, April 1961
The Crazy Clock Caper, October 1960
Carl & Jerry: Their Complete Adventures is
now available. "From 1954 through 1964, Popular Electronics published 119 adventures
of Carl Anderson and Jerry Bishop, two teen boys with a passion for electronics
and a knack for getting into and out of trouble with haywire lash-ups 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."
Posted April 28, 2021
(updated from original post on 4/16/2014)