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Frequency Cards

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Everything hertz Card

Description: Everything hertz

Tags: audio, audio engineer, audiophile, engineer, engineering

Everything hertz Card

by Stellart

$5.00 $6.00

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Discrete Fourier Transform Equation Math Basics Card

Description: Discrete Fourier transform formula, a special case of the continuous Fourier transform, very useful equation in many domains of science.

Tags: fourier, joseph fourier, mathematician, mathematics, physics

Discrete Fourier Transform Equation Math Basics Card

by ScienceCorner

$5.00 $6.00

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Electromagnetic Spectrum Card
Main Tag:  

Description: The electromagnetic spectrum encompasses the full range of electromagnetic radiation, organized by wavelength or frequency. It includes radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays—each with unique properties and applications in communication, medicine, astronomy, and more. Despite their differences, all forms of electromagnetic radiation travel at the speed of light in a vacuum and consist of oscillating electric and magnetic fields.

Tags: electromagnetic spectrum, frequency, infrared, light, microwaves

Electromagnetic Spectrum Card

by Stuff by Sid

$5.00 $6.00

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NOTHING BUT HAM RADIO WORLD SATELLITE Card
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Description: Our flagship t-shirt, perfect for all ham radio operators ready to get on the air and enjoy the passion of shortwave frequencies.

Tags: amateur radio, army, fashion, frequency, ham

NOTHING BUT HAM RADIO WORLD SATELLITE Card

by Nothing But Ham Radio

$5.00 $6.00

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Harmonics Card
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Description: Distorted wave pattern.

Tags: back catalog, acoustics, sound, music, frequency

Harmonics Card

by TopQuark Design

$5.00 $6.00

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Laplace Transform Equation Card

Description: Laplace transform formula, a very useful equation in many domains of science.

Tags: laplace, mathematician, mathematics, physics, physicist

Laplace Transform Equation Card

by ScienceCorner

$5.00 $6.00

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Fourier Transform Card

Description: Although the Fourier Transform is a very important tool in mathematics, physicists, and engineers, it is not used in the same way as in these other fields. However, it is a very important tool used to decompose images and in signal processing.

Tags: fourier, joseph fourier, mathematician, mathematics, physics

Fourier Transform Card

by ScienceCorner

$5.00 $6.00

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Black Sheep Unity Card

Description: Three energies. One mindset. High. Frequency. Chaos. This design represents elevation, awareness, and fearless truth. The black sheep stands apart—uncontrolled, unprogrammed, and unafraid to challenge the system. For those who think different, move different, and refuse to follow the herd.

Tags: sheep

Black Sheep Unity Card

by High Frequency Chaos

$5.00 $6.00

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Actually I'm Just Here To Hold The Frequency Card

Description: A minimalist, vibe-driven text design that carries a calm, confident energy. “Actually I’m Just Here To Hold The Frequency” speaks to mindfulness, presence, and staying grounded no matter the chaos. Perfect for spiritual souls, energy workers, or anyone who values good vibes and inner peace with a subtle, stylish statement.

Tags: calm, confident energy, funny saying, humor, inspiration

Actually I'm Just Here To Hold The Frequency Card

by fatless design

$5.00 $6.00

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Home Frequency BFFs Card
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Description: Two coolies

Tags: cartoon, chihuahua, comic, cosmic, cosmos

Home Frequency BFFs Card

by turddemon

$5.00 $6.00

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sunflower, heartbeat, heart, bloom, sunflowerfield Card

Description: yellow sunflowers for all whose heart beats for sunflowers, nature and flowers! Sunflower - a magical floral birthday gift, gift idea for Valentine's Day, Mother's Day, Women's Day, Christmas.

Tags: bloom, flowers, heartbeat gift, heartbeat frequency, sunflower

sunflower, heartbeat, heart, bloom, sunflowerfield Card

by rh_naturestyles

$5.00 $6.00

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HEADPHONES WAVE, Galaxy, Space, Heartbeat, Music, Pulse Card
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Description: HEADPHONES WAVE GALAXY: This design was made for all people who love music & musical symbols, sci fi and the universe, house, dance, techno, electro, trance, minimal, psytrance, goa, for the DJ and the musician, dancer and dreamer and for all the party people. This Galaxy Pulse design by yuma is sure to be a hit, whether you're buying it as a gift for somebody for birthday, Christmas, and other occasions or wearing it yourself.

Tags: audio, band, cosmic, dj, frequency

HEADPHONES WAVE, Galaxy, Space, Heartbeat, Music, Pulse Card

by Anne Mathiasz

$5.00 $6.00

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Glider Soaring Pulse Glider Pilot Gift Card
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Description: Gift idea for glider pilots for gliding. If your heartbeat flies with the glider, this motif is perfect for you. Pulse beat design for the airfield for soaring.

Tags: aircraft, airfield, airplane, fly, frequency

Glider Soaring Pulse Glider Pilot Gift Card

by Foxxy Merch

$5.00 $6.00

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Never Underestimate an Old Man with a Ham Radio Card

Description: Are you looking for a present idea for a ham radio whisperer and ham radio operators? Then this is for you.

Tags: amateur, amateur ham radio, amateur radio, antenna, frequency

Never Underestimate an Old Man with a Ham Radio Card

by elphanty

$5.00 $6.00

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High Vibrations Card

Description: Hight Vibrations keep your energy and frequency high.

Tags: high, vibrations, heartbeat, soundwave, sound

High Vibrations Card

by Angelic Gangster

$5.00 $6.00

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Black Sheep Unleashed – Frequency Over Fear Card
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Description: This isn’t just a black sheep… this is a signal. Moving on a different frequency, seeing what others ignore, and refusing to fold to pressure, control, or the system. This design represents independence, awareness, and standing firm when everything around you tries to bend you. Built for those who think for themselves, move different, and stay locked in—no fear, just frequency.

Tags: black, sheep

Black Sheep Unleashed – Frequency Over Fear Card

by High Frequency Chaos

$5.00 $6.00

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laplace transform, math and science Card
Main Tag:  

Description: laplace transform formula, a very useful equation in many domains of science, such as physics and engineering

Tags: calculus, differential equations, engineering, frequency, mathematician

laplace transform, math and science Card

by NoetherSym

$5.00 $6.00

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Laplace transform, calculus and math basics Card
Main Tag:  

Description: laplace transform formula, a very useful equation in many domains of science such as engineering and physics

Tags: calculus, differential equations, engineering, frequency, mathematician

Laplace transform, calculus and math basics Card

by NoetherSym

$5.00 $6.00

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Ham Radio It's A Contact Sport Card

Description: Ham radio - it's a contact sport design for a ham radio operator who works with ham radios.

Tags: amateur, amateur ham radio, amateur radio, antenna, frequency

Ham Radio It's A Contact Sport Card

by elphanty

$5.00 $6.00

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Hot 97 NYC Vintage Card
Main Tag:  

Description: WQHT is a commercial radio station, licensed to New York, New York, which broadcasts an urban contemporary music format. The station is owned by Mediaco Holding, a subsidiary of the Standard General hedge fund, and operated by Emmis Corporation under a shared services agreement.

Tags: 80s, 90s, amateur radio, frequency, ham

Hot 97 NYC Vintage Card

by pointcoffee

$5.00 $6.00

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Royal Signals Vet Card

Description: Royal Signal veteran design with a C42 radio and an SLR

Tags: amateur radio, bishbashbosh, british army, british army veteran, c42

Royal Signals Vet Card

by BishBashBosh

$5.00 $6.00

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Fourier Transform Equation Card

Description: Fourier transform formula, a very useful equation in many domains of science.

Tags: fourier, joseph fourier, mathematician, mathematics, physics

Fourier Transform Equation Card

by ScienceCorner

$5.00 $6.00

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Fourier transform, calculus and math basics Card
Main Tag:  

Description: fourier transform formula, a very useful equation in many domains of science, such as physics and engineering

Tags: calculus, differential equations, engineering, frequency, mathematician

Fourier transform, calculus and math basics Card

by NoetherSym

$5.00 $6.00

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Ham Radio - danger! Card
Main Tag:  

Description: The perfect t-shirt for radio, radio amateurs, CB radio operators and radio technicians.

Tags: amateur radio, amateur radio funny, cb, cb radio, db

Ham Radio - danger! Card

by amarth-drawing

$5.00 $6.00

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When All Else Fails Ham Radio Works Amateur Radio Card

Description: Love Ham Radio? This retro-inspired "When All Else Fails Ham Radio Works" design is perfect for any ham radio operator or shortwave enthusiast. Ideal for anyone passionate about communication, radio, and amateur radio operation.

Tags: amateur, amateur ham radio, amateur radio, antenna, frequency

When All Else Fails Ham Radio Works Amateur Radio Card

by elphanty

$5.00 $6.00

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You Sleep, I Watch Card
Main Tag:  

Description: An eye-catching design featuring an audio waveform with an intriguing message. Perfect for night owls, guardians, and individuals with unique insights. Show off your perceptive nature with this design.

Tags: audio, awareness, frequency, message, night

You Sleep, I Watch Card

by PlayerDesign

$5.00 $6.00

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Rose, heartbeat, roses, flower, heart, frequency Card

Description: orange blooming rose with heartbeat frequency, rose petals for everyone whose heart beats for flowers & nature! The rose is ideal as a gift for Mother's Day, Valentine's Day & Women's Day.

Tags: floral, love, heartbeat gift, heartbeats, bloom

Rose, heartbeat, roses, flower, heart, frequency Card

by rh_naturestyles

$5.00 $6.00

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fourier transform, calculus and math basics Card
Main Tag:  

Description: fourier transform formula, a very useful equation in many domains of science such as physics and engineering

Tags: calculus, differential equations, engineering, frequency, mathematician

fourier transform, calculus and math basics Card

by NoetherSym

$5.00 $6.00

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Doppler Effect Card
Main Tag:  

Description: Illustrated Doppler Effect with Doppler Frequency formula.

Tags: college, doppler effect, science, university, student

Doppler Effect Card

by Silentrebel

$5.00 $6.00

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It's Okay If You Don't Like Ham Radio Card
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Description: This It's Okay If You Don't Like Ham Radio It's Kind Of A Smart People Hobby Anyway products makes a perfect design for anyone that loves ham radio, amateur radio, antenna, or frequency.

Tags: amateur, amateur ham radio, amateur radio, antenna, frequency

It's Okay If You Don't Like Ham Radio Card

by elphanty

$5.00 $6.00

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the world on air - Ham Radio - Retro Card
Main Tag:  

Description: The perfect design for radio, radio amateurs, CB radio operators and radio technicians.

Tags: amateur radio, amateur radio funny, cb radio, db, funk

the world on air - Ham Radio - Retro Card

by amarth-drawing

$5.00 $6.00

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Patriotic USA Flag Ham Radio Amateur Card

Description: Are you an Amateur Radio Operator or a Ham Radio Enthusiast? Are you looking for a great Birthday or Christmas apparel for a Telegraphy Fan or Telegraph Lover? Then this is perfect for you.

Tags: amateur, amateur ham radio, amateur radio, antenna, frequency

Patriotic USA Flag Ham Radio Amateur Card

by elphanty

$5.00 $6.00

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HAM International Amateur Radio Symbol Card

Description: Do you love radiosport, recreation or contesting? Are you into using electronic communication? This HAM radio sign artwork is perfect for any dad, mom, uncle or aunt who are licensed ham radio operators.

Tags: amateur, amateur ham radio, antenna, frequency, ham

HAM International Amateur Radio Symbol Card

by elphanty

$5.00 $6.00

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Doppler Effect Card
Main Tag:  

Description: Illustrated Doppler Effect with formula of Doppler Frequency.

Tags: frequency, acoustics, science, redshift, radar

Doppler Effect Card

by Silentrebel

$5.00 $6.00

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Hot 97 NYC Card
Main Tag:  

Description: WQHT is a commercial radio station, licensed to New York, New York, which broadcasts an urban contemporary music format. The station is owned by Mediaco Holding, a subsidiary of the Standard General hedge fund, and operated by Emmis Corporation under a shared services agreement.

Tags: 80s, 90s, amateur radio, frequency, ham

Hot 97 NYC Card

by pointcoffee

$5.00 $6.00

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Parks On The Air Ham Radio Operator POTA Camping Card
Main Tag:  

Description: Parks On The Air Ham Radio Operator POTA Camping

Tags: amateur radio, antenna, camping, communication, forest

Parks On The Air Ham Radio Operator POTA Camping Card

by KeiraLamont

$5.00 $6.00

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