Канал: Johnson's Techworld

Capturing SSTV Images From International Space Station!

Capturing SSTV Images From International Space Station!

Capturing SSTV Images From International Space Station!

Capturing SSTV Images From International Space Station!

Types of Transistors and How They Work

Types of Transistors and How They Work

Types of Transistors and How They Work

Types of Transistors and How They Work

Is VU LEO Satellite Activity Coming Down?

Is VU LEO Satellite Activity Coming Down?

Is VU LEO Satellite Activity Coming Down?

Is VU LEO Satellite Activity Coming Down?

Unboxing FT-710 AESS

Unboxing FT-710 AESS

Unboxing FT-710 AESS

Unboxing FT-710 AESS

Effect of Light and Shade on LDR: How an Automatic Street Light Works!

Effect of Light and Shade on LDR: How an Automatic Street Light Works!

Effect of Light and Shade on LDR: How an Automatic Street Light Works!

Effect of Light and Shade on LDR: How an Automatic Street Light Works!

Checking LDR (Photoresistor) With Multimeter

Checking LDR (Photoresistor) With Multimeter

Checking LDR (Photoresistor) With Multimeter

Checking LDR (Photoresistor) With Multimeter

Introducing LM358 operational amplifier IC

Introducing LM358 operational amplifier IC

Introducing LM358 operational amplifier IC

Introducing LM358 operational amplifier IC

Know a bit about the popular 555 timer IC!

Know a bit about the popular 555 timer IC!

Know a bit about the popular 555 timer IC!

Know a bit about the popular 555 timer IC!

Can You Access Australian 10m FM Repeater From India?

Can You Access Australian 10m FM Repeater From India?

Can You Access Australian 10m FM Repeater From India?

Can You Access Australian 10m FM Repeater From India?

Strong Contest Station E21AZ on 10m

Strong Contest Station E21AZ on 10m

Strong Contest Station E21AZ on 10m

Strong Contest Station E21AZ on 10m

Simple experiment with multi colour blinking LED!

Simple experiment with multi colour blinking LED!

Simple experiment with multi colour blinking LED!

Simple experiment with multi colour blinking LED!

Hamfest India 2024 just two months away!

Hamfest India 2024 just two months away!

Hamfest India 2024 just two months away!

Hamfest India 2024 just two months away!

Short Demo of Using Robot 36 App to Decode SSTV from ARISS

Short Demo of Using Robot 36 App to Decode SSTV from ARISS

Amateur radio satellite operators gear up for the week long SSTV event!

Amateur radio satellite operators gear up for the week long SSTV event!

Testing LED With a Multimeter

Testing LED With a Multimeter

Testing LED With a Multimeter

Testing LED With a Multimeter

Use of band pass filters in amateur radio

Use of band pass filters in amateur radio

Use of band pass filters in amateur radio

Use of band pass filters in amateur radio

Testing TSOP1738 Infrared Receiver With a Simple Circuit

Testing TSOP1738 Infrared Receiver With a Simple Circuit

Darlington Triplet as a high gain amplifier and touch sensor!

Darlington Triplet as a high gain amplifier and touch sensor!

Is there any role for ferrite rod antenna in amateur radio?

Is there any role for ferrite rod antenna in amateur radio?

I was heard on Diwata 2B (PO-101) by VU2TEK for the first time!

I was heard on Diwata 2B (PO-101) by VU2TEK for the first time!

I was heard on Diwata 2B (PO-101) by VU2TEK for the first time!

I was heard on Diwata 2B (PO-101) by VU2TEK for the first time!

Darlington Triplet as a high gain amplifier and touch sensor!

Darlington Triplet as a high gain amplifier and touch sensor!

Darlington Triplet as a high gain amplifier and touch sensor!

Darlington Triplet as a high gain amplifier and touch sensor!

How to calculate line of sight from an antenna?

How to calculate line of sight from an antenna?

How to calculate line of sight from an antenna?

How to calculate line of sight from an antenna?

Why are resistors and capacitors usually available only in certain denominations?

Why are resistors and capacitors usually available only in certain denominations?

Why are resistors and capacitors usually available only in certain denominations?

Why are resistors and capacitors usually available only in certain denominations?

Did I hear a DX station in the last pass of International Space Station at 1505z?

Did I hear a DX station in the last pass of International Space Station at 1505z?

Did I hear a DX station in the last pass of International Space Station at 1505z?

Did I hear a DX station in the last pass of International Space Station at 1505z?

What is DIP or Dual in-line package?

What is DIP or Dual in-line package?

What is DIP or Dual in-line package?

What is DIP or Dual in-line package?

On Using 30m Antenna for 10m!

On Using 30m Antenna for 10m!

On Using 30m Antenna for 10m!

On Using 30m Antenna for 10m!

Back to Basics: Checking Resistors in Series and Parallel

Back to Basics: Checking Resistors in Series and Parallel

Back to Basics: Checking Resistors in Series and Parallel

Back to Basics: Checking Resistors in Series and Parallel

FUNcube Lite Payload for Jovian-1 Satellite has Amateur Radio FM Transponder!

FUNcube Lite Payload for Jovian-1 Satellite has Amateur Radio FM Transponder!

FUNcube Lite Payload for Jovian-1 Satellite has Amateur Radio FM Transponder!

FUNcube Lite Payload for Jovian-1 Satellite has Amateur Radio FM Transponder!

So much interest in Europa Clipper from India!

So much interest in Europa Clipper from India!

So much interest in Europa Clipper from India!

So much interest in Europa Clipper from India!

Today's Balloon CubeSat ULOG3 Launch from South India

Today's Balloon CubeSat ULOG3 Launch from South India

Today's Balloon CubeSat ULOG3 Launch from South India

Today's Balloon CubeSat ULOG3 Launch from South India

What is a Darlington Pair of Transistors?

What is a Darlington Pair of Transistors?

What is a Darlington Pair of Transistors?

What is a Darlington Pair of Transistors?

Anyone heard of an amateur radio satellite operating on 5 GHz band?

Anyone heard of an amateur radio satellite operating on 5 GHz band?

Anyone heard of an amateur radio satellite operating on 5 GHz band?

Anyone heard of an amateur radio satellite operating on 5 GHz band?

Small Magnetic Loop Antenna

Small Magnetic Loop Antenna

What are alpha, beta and gamma of transistors?

What are alpha, beta and gamma of transistors?

What are alpha, beta and gamma of transistors?

What are alpha, beta and gamma of transistors?

What is NanoVNA?

What is NanoVNA?

Testing TSOP1738 Infrared Receiver With a Simple Circuit

Testing TSOP1738 Infrared Receiver With a Simple Circuit

Testing TSOP1738 Infrared Receiver With a Simple Circuit

Testing TSOP1738 Infrared Receiver With a Simple Circuit

What is the advantage of using a ladder line in amateur radio?

What is the advantage of using a ladder line in amateur radio?

What is the advantage of using a ladder line in amateur radio?

What is the advantage of using a ladder line in amateur radio?

How is hFE of a transistor tested with a digital multimeter?

How is hFE of a transistor tested with a digital multimeter?

What is hFE of a transistor and how to test it with a multimeter?

What is hFE of a transistor and how to test it with a multimeter?

Happy to hear a new station on ARISS pass just now!

Happy to hear a new station on ARISS pass just now!

Happy to hear a new station on ARISS pass just now!

Happy to hear a new station on ARISS pass just now!

What is transition frequency of a transistor?

What is transition frequency of a transistor?

What is transition frequency of a transistor?

What is transition frequency of a transistor?

Bipolar Junction Transistors (NPN and PNP) and how to test them using digital multimeter

Bipolar Junction Transistors (NPN and PNP) and how to test them using digital multimeter

Bipolar Junction Transistors (NPN and PNP) and how to test them using digital multimeter

Bipolar Junction Transistors (NPN and PNP) and how to test them using digital multimeter

Basics of Diodes and Testing With Multimeter

Basics of Diodes and Testing With Multimeter

Basics of Diodes and Testing With Multimeter

Basics of Diodes and Testing With Multimeter

HADES-R and HADES-ICM satellites in early 2025!

HADES-R and HADES-ICM satellites in early 2025!

HADES-R and HADES-ICM satellites in early 2025!

HADES-R and HADES-ICM satellites in early 2025!

Demo of Secure Argentinian Amsat Satellite Pass Prediction Page on a Lonely ARISS Pass!

Demo of Secure Argentinian Amsat Satellite Pass Prediction Page on a Lonely ARISS Pass!

Demo of Secure Argentinian Amsat Satellite Pass Prediction Page on a Lonely ARISS Pass!

Demo of Secure Argentinian Amsat Satellite Pass Prediction Page on a Lonely ARISS Pass!

Fortification of Antenna Supports in Rainy Windy Season!

Fortification of Antenna Supports in Rainy Windy Season!

Fortification of Antenna Supports in Rainy Windy Season!

Fortification of Antenna Supports in Rainy Windy Season!

Assembling a bridge rectifier on a breadboard and checking output

Assembling a bridge rectifier on a breadboard and checking output

Checking the 50 Hz hum of alternating current in a loudspeaker, a crude 'oscilloscope'!

Checking the 50 Hz hum of alternating current in a loudspeaker, a crude 'oscilloscope'!

Checking the 50 Hz hum of alternating current in a loudspeaker, a crude 'oscilloscope'!

Checking the 50 Hz hum of alternating current in a loudspeaker, a crude 'oscilloscope'!

Experiment to check the function of 50 Kilo Ohms Cermet Preset Potentiometer

Experiment to check the function of 50 Kilo Ohms Cermet Preset Potentiometer

Experiment to check the function of 50 Kilo Ohms Cermet Preset Potentiometer

Experiment to check the function of 50 Kilo Ohms Cermet Preset Potentiometer

What is the Beam Width of My Moxon Yagi? - Remastered

What is the Beam Width of My Moxon Yagi? - Remastered

Learning a bit about electrodynamic speaker driver

Learning a bit about electrodynamic speaker driver

Cermet Preset Potentiometers

Cermet Preset Potentiometers

Cermet Preset Potentiometers

Cermet Preset Potentiometers

Checking input and output of bridge rectifier built yesterday

Checking input and output of bridge rectifier built yesterday

Checking input and output of bridge rectifier built yesterday

Checking input and output of bridge rectifier built yesterday

How I Work an Amateur Radio Satellite Pass - Remastered

How I Work an Amateur Radio Satellite Pass - Remastered

Learning a bit about electrodynamic speaker driver

Learning a bit about electrodynamic speaker driver

Rectifier Diodes and Circuits - Remastered

Rectifier Diodes and Circuits - Remastered

Inside and outside of a digital multimeter

Inside and outside of a digital multimeter

Inside and outside of a digital multimeter

Inside and outside of a digital multimeter

Have a look at different types of audio connectors

Have a look at different types of audio connectors

Have a look at different types of audio connectors

Have a look at different types of audio connectors

Checking SWR with a Cross Needle SWR Meter

Checking SWR with a Cross Needle SWR Meter

Assembling a bridge rectifier on a breadboard

Assembling a bridge rectifier on a breadboard

Assembling a bridge rectifier on a breadboard

Assembling a bridge rectifier on a breadboard

What are Keplerian elements or Keps for satellites?

What are Keplerian elements or Keps for satellites?

What are Keplerian elements or Keps for satellites?

What are Keplerian elements or Keps for satellites?

How to use a solderless breadboard for building electronic circuits

How to use a solderless breadboard for building electronic circuits

How to use a solderless breadboard for building electronic circuits

How to use a solderless breadboard for building electronic circuits

Pass of Space Station at 0730z and New https site of Argentinian Amsat Satellite Pass Prediction

Pass of Space Station at 0730z and New https site of Argentinian Amsat Satellite Pass Prediction

Pass of Space Station at 0730z and New https site of Argentinian Amsat Satellite Pass Prediction

Pass of Space Station at 0730z and New https site of Argentinian Amsat Satellite Pass Prediction

How to make an aquarium aerator filter operational again?

How to make an aquarium aerator filter operational again?

How to make an aquarium aerator filter operational again?

How to make an aquarium aerator filter operational again?

Radiation Damage Has Taken the Toll on Popular GreenCube (IO-117) Satellite

Radiation Damage Has Taken the Toll on Popular GreenCube (IO-117) Satellite

Radiation Damage Has Taken the Toll on Popular GreenCube (IO-117) Satellite

Radiation Damage Has Taken the Toll on Popular GreenCube (IO-117) Satellite

Surface Mount Devices and Technology

Surface Mount Devices and Technology

Surface Mount Devices and Technology

Surface Mount Devices and Technology

Light Dependent Resistor (LDR) or Photoresistor

Light Dependent Resistor (LDR) or Photoresistor

Light Dependent Resistor (LDR) or Photoresistor

Light Dependent Resistor (LDR) or Photoresistor

Phased Array Antennas

Phased Array Antennas

Rectifier Diodes and Circuits

Rectifier Diodes and Circuits

Should I go for an 80m antenna? If so, when?

Should I go for an 80m antenna? If so, when?

Rectifier Diodes and Circuits

Rectifier Diodes and Circuits

Should I go for an 80m antenna? If so, when?

Should I go for an 80m antenna? If so, when?

What are Phased Array Antennas?

What are Phased Array Antennas?

VU2SV Memorial Morning HF Net on 7090 kHz

VU2SV Memorial Morning HF Net on 7090 kHz

VU2SV Memorial Morning HF Net on 7090 kHz

VU2SV Memorial Morning HF Net on 7090 kHz

What are Fractal Antennas?

What are Fractal Antennas?

What are Fractal Antennas?

What are Fractal Antennas?

Importance of Ionosphere in HF Communications

Importance of Ionosphere in HF Communications

USB Printer Cable for FT-710 CAT Control!

USB Printer Cable for FT-710 CAT Control!

USB Printer Cable for FT-710 CAT Control!

USB Printer Cable for FT-710 CAT Control!

Wireless Router Range Extender

Wireless Router Range Extender

Wireless Router Range Extender

Wireless Router Range Extender

Know About LEDs

Know About LEDs

Know About LEDs

Know About LEDs

What is a shark fin antenna?

What is a shark fin antenna?

What is a shark fin antenna?

What is a shark fin antenna?

Learning a Bit on Capacitors!

Learning a Bit on Capacitors!

Learning a Bit on Capacitors!

Learning a Bit on Capacitors!

Happy to work 9W8ZZK from Borneo Island (3964.8 km) on 21.285 MHz SSB

Happy to work 9W8ZZK from Borneo Island (3964.8 km) on 21.285 MHz SSB

Happy to work 9W8ZZK from Borneo Island (3964.8 km) on 21.285 MHz SSB

Happy to work 9W8ZZK from Borneo Island (3964.8 km) on 21.285 MHz SSB

Six Button Wireless Mouse vs Three Button Mouse

Six Button Wireless Mouse vs Three Button Mouse

Six Button Wireless Mouse vs Three Button Mouse

Six Button Wireless Mouse vs Three Button Mouse

Strong Contest Station on 10m!

Strong Contest Station on 10m!

Lonely Pass of ARISS!

Lonely Pass of ARISS!

Fished out this HCF 4017 from my Electronics 'Recycle Bin'!

Fished out this HCF 4017 from my Electronics 'Recycle Bin'!

First Contact on the 'Rare Bird' UVSQ-SAT!

First Contact on the 'Rare Bird' UVSQ-SAT!

First Contact on the 'Rare Bird' UVSQ-SAT!

First Contact on the 'Rare Bird' UVSQ-SAT!

Plenty of Signals on 40, 20 and 15 m, But None on 10 m!

Plenty of Signals on 40, 20 and 15 m, But None on 10 m!

Listening to UVSQ-SAT: A Rare 'Bird'

Listening to UVSQ-SAT: A Rare 'Bird'

Fished out this HCF 4017 from my Electronics 'Recycle Bin'!

Fished out this HCF 4017 from my Electronics 'Recycle Bin'!

UVSQ-SAT Activation for 48 Hours From Tomorrow!

UVSQ-SAT Activation for 48 Hours From Tomorrow!

UVSQ-SAT Activation for 48 Hours From Tomorrow!

UVSQ-SAT Activation for 48 Hours From Tomorrow!

What are HRC fuses?

What are HRC fuses?

What are HRC fuses?

What are HRC fuses?

Have a Look at My CW Paddles!

Have a Look at My CW Paddles!

Have a Look at My CW Paddles!

Have a Look at My CW Paddles!

Shall we learn some weather terminologies?

Shall we learn some weather terminologies?

Shall we learn some weather terminologies?

Shall we learn some weather terminologies?

R-S-T System of Reports in Amateur Radio

R-S-T System of Reports in Amateur Radio

807 Vacuum Tube, My Workhorse of Yesteryears!

807 Vacuum Tube, My Workhorse of Yesteryears!

Acrobatics of Working and Recording Space Station Pass!

Acrobatics of Working and Recording Space Station Pass!

10m Band Back Alive!

10m Band Back Alive!

Do you really need a Linear Amplifier?

Do you really need a Linear Amplifier?

Have You Heard About a Quagi Antenna?

Have You Heard About a Quagi Antenna?

R-S-T System of Reports in Amateur Radio

R-S-T System of Reports in Amateur Radio

807 Vacuum Tube, My Workhorse of Yesteryears!

807 Vacuum Tube, My Workhorse of Yesteryears!

Acrobatics of Working and Recording Space Station Pass!

Acrobatics of Working and Recording Space Station Pass!

10m Band Back Alive!

10m Band Back Alive!

Do you really need a Linear Amplifier?

Do you really need a Linear Amplifier?

700/800 MHz Public Safety Band Penetrates Buildings Well!

700/800 MHz Public Safety Band Penetrates Buildings Well!

700/800 MHz Public Safety Band Penetrates Buildings Well!

700/800 MHz Public Safety Band Penetrates Buildings Well!

What is ASTM?

What is ASTM?

What is ASTM?

What is ASTM?

Can you operate FT-710 remotely?

Can you operate FT-710 remotely?

Can you operate FT-710 remotely?

Can you operate FT-710 remotely?

Different Functions of the 'Meter' on FT-710 Radio

Different Functions of the 'Meter' on FT-710 Radio

Let us learn a bit more on S Meter

Let us learn a bit more on S Meter

Let us learn a bit more on S Meter

Let us learn a bit more on S Meter

See New Magnetic Inferential Water Meter in Action!

See New Magnetic Inferential Water Meter in Action!

See New Magnetic Inferential Water Meter in Action!

See New Magnetic Inferential Water Meter in Action!

Special Modes of Propagation on Higher Amateur Radio Bands

Special Modes of Propagation on Higher Amateur Radio Bands

Visible Pass of Space Station Recorded With Mobile Phone

Visible Pass of Space Station Recorded With Mobile Phone

Visible Pass of Space Station Recorded With Mobile Phone

Visible Pass of Space Station Recorded With Mobile Phone

Common Connectors Used in Amateur Radio

Common Connectors Used in Amateur Radio

Common Connectors Used in Amateur Radio

Common Connectors Used in Amateur Radio

Starliner Back Home!

Starliner Back Home!

Was Looking for NA1SS on Space Station Pass

Was Looking for NA1SS on Space Station Pass

Was Looking for NA1SS on Space Station Pass

Was Looking for NA1SS on Space Station Pass

5/8 λ Vertical Antenna

5/8 λ Vertical Antenna

5/8 λ Vertical Antenna

5/8 λ Vertical Antenna

Voltage, Current and Radiation Pattern in J Pole Antenna

Voltage, Current and Radiation Pattern in J Pole Antenna

What is Roving in Amateur Radio Satellite Operations?

What is Roving in Amateur Radio Satellite Operations?

What is Roving in Amateur Radio Satellite Operations?

What is Roving in Amateur Radio Satellite Operations?

VOACAP or Voice of America Coverage Analysis Program for HF Propagation Prediction

VOACAP or Voice of America Coverage Analysis Program for HF Propagation Prediction

Starliner Spacecraft to Return Tomorrow!

Starliner Spacecraft to Return Tomorrow!

Yagi-Uda Antenna Revisited!

Yagi-Uda Antenna Revisited!

Working Space Station with 40 Plus 10 m Combination Inverted V Dipole Antenna!

Working Space Station with 40 Plus 10 m Combination Inverted V Dipole Antenna!

VOACAP or Voice of America Coverage Analysis Program for HF Propagation Prediction

VOACAP or Voice of America Coverage Analysis Program for HF Propagation Prediction

Starliner Spacecraft to Return Tomorrow!

Starliner Spacecraft to Return Tomorrow!