Bharatkosh Registration

How To Register On Bharatkosk

Website –

  • On Google Search just type bharatkosh it will take you to this website as below:-
  • The moment you kick on that it take you to below mentioned page of Bharatkosh
  • Click on LOGIN / REGISTER
  • After that it will take you to below mentioned page
  • Just below the GREEN colour icon Submit you will find New User
  • Click on New User
  • After clicking New User it will take you to below mentioned page
  • Enter your mobile No
  • Enter your Email ID
  • Enter Captcha
  • Then press send OTP
  • Once you get the OTP enter the same in the below mentioned page
  • After entering the OTP press verify
  • After that it will take you to below mentioned page which is displayed here in TWO parts
  • In Depositor’s Category – from the dropdown menu select “Individual”
  • In Select Controller – from the dropdown menu select “TELECOMMUNICATIONS”
  • Enter your First Name in one row
  • Enter your Last Name in second row
  • Enter your User Name of your choice
  • Enter password of your choice as per the page below
  • After entering all the details as above Press Submit and then will take you to last page
  • The last page says “Success”
  • This completes the First step of your Registration on Bharatkosh website

Ohm’s Law

What is Ohm’s Law?

This was derived by a German physicist named as Georg Ohm (1789-1854),

Ohm’s Law is a formula used to calculate the relationship between Voltage, Current and Resistance in an electronic circuit.

In electronics, Ohm’s Law (E = IR) is as fundamentally important as Einstein’s Relativity equation (E = mc²) is to physicists.

E = I x R

Which is voltage = current x resistance, or volts = amps x ohms, or V = A x Ω.

In Ohm’s Law each alphabets stands as below which is used in our day to day electronics and in circuits we work on:

QuantityOhm’s Law
Unit of measure
Role in circuitsIn case you’re wondering:
VoltageEVolt (V)Pressure that triggers electron flowE = electromotive force (old-school term)
CurrentIAmpere, amp (A)Rate of electron flowI = intensity
ResistanceROhm (Ω)Flow inhibitorΩ = Greek letter omega

If two of these values are known, technicians can reconfigure Ohm’s Law to calculate the third. Just modify the pyramid as follows:

How to reconfigure Ohm’s Law formula.

How to get the licence

Getting a Amateur Radio/HAM Radio licence is very easy. Monitoring Station keeps conducting ASOC exam from time to time.

One has to get in touch with any club station like DARTS or any other club station in India or can contact directly to the monitoring station of that city for the exams. After clearing the written exam conducted by any Monitoring Station of any city in India WPC issues a licence to keeps wireless equipments and to operate them.

Click here for more info.

What are the categories of Amateur Radio License in India

Gone are the days, when we had multiple categories of licenses. We used to apply for the Shortwave Listener’s License to keep a communication receiver for monitoring HAM bands before upgrading to an Amateur Radio Operator’s license, which allows to work amateur radio bands on various modes, viz., CW, Voice, Telegraph or Digital.

Following were FOUR categories of licence:-

  1. SWL (Shortwave Listeners’ Licence, allowed only to monitor the radio frequency in amateur bands).
  2. Grade II (Restriction of power was there plus one had to make 100 CW contacts and then only, was allowed to use voice after getting the licence)
  3. Grade I (Restriction of power was there but was allowed to go on air through voice immediately after getting the licence)
  4. Advance Grade (No restriction of power and can go on air immediately after getting the licence).

Today, to encourage this dying hobby, WPC (Wireless Planning & Coordination Wing) has reduced the number of categories of Licence. There are only TWO types of categories which are as below:-

  1. Restricted Grade (Morse code is not required)
  2. General Grade (Morse code with speed of 8wpm)

One has to pass a written exam to get the licence for Restricted or General grade which is organized by Monitoring station in respective city.

9:1 Balun For End Fed Antenna

A 9:1 Balun For Your End Fed Antenna

End-Fed antennas do have their place in radio and other communications work. Like everything else, antennas come in many forms and flavors. It’s up to the designer to select the best design for the job at hand and to utilize that design in the most efficient way.
* * * A Bad Rap? * * *
– End-Fed antennas are NOT balanced systems; but neither are verticals, ground planes, discones, windoms, zepps, Marconis, half-slopers, et al. Additionally, the low-impedance antenna port of your transmitter/receiver is not balanced.
– End-Fed antennas are noise magnets. Really? That’s because most hams and SWL-ers don’t bother to interface them properly.
– End-Fed antennas have wild impedance swings. So do all antennas, but not at the design frequency – there, at the design frequency, the terminal impedance is quite predictable.
To make the best use of an End-Fed antenna, it should be fed with a transformer. Here are some photos of one of my 9:1 baluns. However, when using it with an End-Fed antenna it is wired as a (so-called) “unun” transformer (unbalanced to unbalanced). The raw End-Fed antenna will go through impedance swings as high as 5K Ohms, or more, at even multiples of its 1/4 wavelength design frequency. At every odd multiple it will be at a more civil impedance of between 36 and 90 Ohms. Using the transformer, the magnitude of the impedance swings is greatly reduced. This is due, in part, to the ratio balancing of the transformer’s turns (windings), and to a few complex reactance and other physics attributes that I won’t try to cover here. Additionally, the unun will eliminate (virtually) all “common mode” currents on the feedline. This is important for eliminating the pickup of local electrical noise from homes and power distribution lines. The coax, being connected to ground through a DC path will eliminate all but the differential currents … pretty cool, huh? Finally, since the antenna is connected directly to Earth ground through the secondary of the transformer, static buildup cannot occur – the antenna is a dead (DC) short to ground. This is important to sensitive, solid state radios.
The 9:1 transformer provides: 1. a much flatter broadband impedance response, 2. a static elctricity-free antenna system (no buildup), 3. common mode noise immunity (if space wound as shown).

For further details please   CLICK HERE



How to become HAM Radio Operator

Any individual above the age of 12 can became a ham radio operator in India after qualifying in Amateur Station Operators Certificate examination conducted by “The Officer-In-Charge”, WPC, Wireless Planning Commission, Government of India, Department of Telecommunication under Ministry of Communication through monitoring station which have their office in various states / cities in India.

These days it has become very to take HAM Radio exam. It takes just a week to train oneself to become eligible for the examination. Also here are many clubs stations in India which keep preparing for the ham radio license test and keep conducing these exams from time to time.

Amateur radio or ham radio is practiced by more than 16,000 licensed users in India. The first amateur radio operator was licensed in 1921, and by the mid-1930s, there were around 20 amateur radio operators in IndiaAmateur radio operators played an important part in the Indian independence movement

What is Amateur Radio / HAM Radio

Amateur Radio (ham radio) is a popular hobby and service that brings people, electronics and communication together. People use ham radio to talk across town, around the world, or even into space, all without the Internet or cell phones. It’s fun, social, educational, and can be a lifeline during natural disaster like floods, hurricanes, tornadoes, volcanic eruptions, earthquakes, tsunamis, and other geologic processes when all communications like cell phone, internet are down then the role of Amateur Radio comes into the picture.

HAM Radio a slang word is commonly used in this hobby.  It is sometimes claimed that HAM came from the first letter from the last names of three radio pioneers: Heinrich Rudolf Hertz, Edwin Armstrong and Guglielmo Marconi.

This hobby enjoyed by several hundred thousand people in the United States and by over a million people worldwide. Amateur radio operators call themselves “radio hams” or simply “hams.”

Z Match Antenna Tuner

Hello and Welcome to view –

Z Match Antenna Tuner.

This is also one of the important machine most of the times can be found in one’s Shack. It can be used with a commercial Rig or with home brew Rig. This has to be connected between the Antenna and the Rig. Here is a simple design of this antenna tuner. One can assemble the same very easily provided he/she is a home brewer.  Kindly click the link below for further details:-

Download Z Match Antenna Tuner(MS Word Format)