Indian Institute of Hams

Launching of New Duplexer for our DMR repeater VU2ZO.

Bengalore Aug 02, 2026.

Hello to all,

Today, the launch of the High-Q 4-Cavity VHF Duplexer, a "Make in India" product developed by Tejtronics Technologies Pvt. Ltd. for the Amateur Radio fraternity, was inaugurated by Mr. Ram Mohan VU2MYH, Executive Vice Chairman and Director of the National Institute of Amateur Radio (NIAR), Hyderabad.

Mr. Jegan VU3JYU delivered a technical presentation on the design and performance of the cavity filter. Around 36 Hams and several SWLs enthusiastically participated in the event and interacted actively.

Following the inauguration, the new duplexer was installed at the VU2ZO DMR repeater site. During the scheduled net at 20:00 hours, the repeater's performance was found to be significantly improved, with enhanced coverage and better signal quality.

The Indian Institute of Hams (IIH) expresses its sincere gratitude to our distinguished guest, Mr. Ram Mohan VU2MYH, and to Mr. Jegan VU3JYU for developing this remarkable compact cavity filter for the Ham fraternity. We are confident that this "Make in India" initiative will greatly benefit present and future generations of Indian Amateur Radio operators.

IIH also thanks all the participants for making this Friendship Day gathering a memorable and successful event.
73
Dr. S..Sathyapal, VU2FI

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About us

INDIAN INSTITUTE OF HAMS (IIH) was established as a registered trust in 1993 for promoting Amateur (HAM) Radio in India, has reached yet another milestone of completing 25 years of continuous service. IIH is founded by Dr. Sathyapal, VU2FI and Sri. R.J.Marcus VU2VTM
IIH is actively associated with Department of Youth Empowerment and Sports, Government of Karnataka having established Ham Radio Station and training centre at Kanteerava Outdoor Stadium, Kasturba Road, Bengaluru -560 001, India.
Indian Institute of Hams is affiliated to National Institute of Amateur Radio (NIAR), Hyderabad and Institutional Member, Amateur Radio Society of India (ARSI).

Since inception, IIH has made tremendous strides in awareness on amateur radio and increasing population of Hams by approximately 10000 hams in INDIA, with its members spread all over the world. From its early days, IIH was well recognized for its activities and received "RAJIV GANDHI AWARD" for two consecutive years in 1995 and 1996 for best promotion of ham radio activities in India, award was presented by Smt. Sonia Gandhi who is also a Ham with a call sign VU2SON.

Attention New HAMs: You can check-in our VHF nets with ECHOLINK and DROIDSTAR. You don't require any radio.

EchoLink software allows licensed Amateur Radio stations to communicate with one another over the Internet, using streaming-audio technology. The program allows worldwide connections to be made between stations, or from computer to station, greatly enhancing Amateur Radio's communications capabilities. Our VHF repeater VU2IU 145.800 MHz (with negative shift) has linked with Echolink (VU2IU-R). You can use your android phone to connect our VHF repeater VU2IU and can check in with our nets. ( net schedules are shown below).
How to get in to our daily roll call net via Echolink - click here

DMR (Digital Mobile Radio) is a digital mobile radio standard. This is now catching up in several Cities in India and Bangalore is no exception. We have more than 45 Hams now in Bangalore who have their DMR Radio setup and are On-Air. IIH runs the Namma Bengaluru DMR Net on the DMR Repeater VU2ZO at Frequency 145.275 MHz with negative shift of 600 kHz, with Time Slot 1 and Time Slot 2 operational. Time Slot 2 is up linked to the BrandMeister network. The official listed BrandMeister Bangalore DMR Talk Group is 40480.If you are interested in getting into such Digital Technologies, then you can start off with this simple guide. It is ok if you don�t have a DMR Radio with you at this point of time, you can still experience DMR and other Digital Technologies using DroidStar Android Application straight from your Mobile Phone.
Steps to configure DroidStar on your Andriod Mobile Phone. click here

Downloads

Attention all VU Hams & SWLs!
The WPC Wing, DOT, Ministry of Communications, Govt. of India has notified through the Office Memorandum File No. Project/ASMS/02/2019 (Part-1) dated 27 July 2020 that with effect from 1 August 2020 all applications for Amateur Radio are to be done only online through https://saralsanchar.gov.in/ Practical guidelines for the same are given as follows:

Links Courtesy: NIAR/VU2JOS

1. Registration:
2. Application for Examination:
3. Application for License:
4. Application for Permanent Change of Location:
5. Application for Renewal:
6. Application for Duplicate License / Renewal:
7. Application for Reciprocal License for Foreign Nationals
8. All in One:
9. Details of Amateur callsigns with new prefixes in India.

Latest WPC Circulars:

Import of Amateur Radio Equipment : 2020-21
Detailed article about import of equipment by Radio Amateurs in India written by Mr. Devadas, VU2DH of Chennai whose profession is Shipping & International Freight Forwading is available
click here

Affiliated Amateur Radio Clubs to IIH

Indian Amateur Radio Repeater Foundation, VU2IU
President & Custodian :
Dr. Sathyapal, VU2FI
Hon. Secy: Sri. G.Varadharajan, VU3ITI

IIH Repeater Station, VU2ZO
Custodian : Mr K.Harish Kumar, VU2KHM

IIH Repeater Station, VU2ZOi
UHF Repeater
Custodian: Dr. S.Sathyapal, VU2FI

Supporting Organisation
1. Reva University, Bengaluru
2. Nagarjun College of Engineering & Technology, Bengaluru
3. SIT, Tumkur, Karnataka
4. R.V.College of Engineering
5. Indian Public School, Turuvekere, Tumkur District, Karnataka

Amateur Radio HF/VHF/UHF Repeater Stations in India :

Compiled by Jose Jacob, VU2JOS,
National Institute of Amateur Radio,NIAR.
Please click the link below.

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