University students shown amateur radio

VHF demonstration by Rajesh Vagadia VU2EXP

VHF demonstration by Rajesh Vagadia VU2EXP

AMSAT-India Regional Coordinator Rajesh Vagadia VU2EXP reports on the ‘Ham Radio – Practical Insight’ session given to 150 students at Parul University.

Wonderful hands on session on ‘Ham Radio – Practical Insight’ was conducted at prestigious Parul University – Baroda (Gujarat, India) on September 8, 2016. Around 150 Engineering (EC) student & faculties participated in the program & gain knowledge on the subject.

Faculty member making a 145 MHz FM contact

Faculty member making a 145 MHz FM contact

In-depth Presentation on Ham Radio, Interesting Ham Radio Events, Video Documentary & SSTV Live demo was carried out by Rajesh Vagadia VU2EXP. Students were excited to see line by line SSTV transmission on the projected screen. To learn with fun, students were allowed to make collective noise during transmission to observe their effect in the SSTV reception!!!

Number of technical & general queries satisfied in Q&A session. Sunny VU2PMU Shared his Ham Experience & Sardool VU2OPX Selected few student with small Quiz.

VHF Demo (Modulation test) was nicely carried out by GIAR team member Ankit VU3NMQ, Sardool VU2OPX, Sunny VU2PMU & myself. Student & faculties learnt the potential of Ham Radio hobby & enjoyed the event at the fullest.

I thank my fellow hams for their kind support and also thankful to Prof. Jay Patel & Prof. Niraj Tever from Parul University to nicely coordinate the event.

Wish this Ham event act as small SPARK (ignition) & in future some of the student may fly high in World of Amateur Radio!

Thanks & 73’s

Rajesh P. Vagadia – (Rajkot – INDIA)
Regional Coordinator
West India Zone

Some of the students at Ham Radio Practical Insight session at Parul University

Some of the students at Ham Radio Practical Insight session at Parul University

AMSAT-India VO-52 satellite completes eight years in orbit



On Sunday, May 5, 2013 AMSAT-India’s VO-52 completed 8 years in orbit. During this time it has proved to be a valuable communications resource for the amateur radio community.

Mani, VU2WMY, posted this on the AMSAT Bulletin Board:

It gives us great and immense pleasure to say that ‘HAMSAT VO-52’ completes eight fruitful years in orbit contributing to the wonderful cause of ‘Amateur Radio Satellite Communication’.

The overall health parameters are excellent and we do hope that transponder(s) on-board ‘HAMSAT VO-52’ would continue to render good services for many more years to come.

On this joyous occasion,on behalf of everyone here in ISRO/India and on my personal behalf, I thank each and every user, contributors and well wishers for this great achievement.

Special thanks to Guru VU2GUR, Nitin VU3TYG, Partha VU2GPS,Sunil VU2UKR,Bob W7LRD, Trevor M5AKA and others for sending in their reports and suggestions for the possible HAMSAT 2.

73 es good wishes de

Mani, VU2WMY
Secretary & Station-In-Charge
Upagrah Amateur Radio Club VU2URC
ISRO Satellite Centre

How to make contacts through the VO-52 satellite

Getting started on Amateur Radio satellites

2005 – HAMSAT launch was 100% successful


AMSAT-India Launch YouTube Channel

AMSAT-India have launched their own YouTube channel. Current videos include an update on the activities and future plans for Amateur Radio satellites from India and a presentation on telemetry decoding.

Continue reading

HAMSAT VO-52 Dutch Transponder Activated

VO-52 on FUNcube Dongle by Dave G4DPZ

VO-52 received on an AMSAT-UK FUNcube Dongle by Dave Johnson G4DPZ during the 17:27 pass on March 14, 2012

The Dutch SSB/CW linear transponder on the AMSAT-India amateur radio satellite HAMSAT VO-52 has been successfully activated.

Transponder # 1, which had been operating for over 6 years, fell silent on February 28 and efforts have been underway to activate transponder # 2.

Mani VU2WMY reports that the commands to ‘Turn On’ the transponder # 2 on-board HAMSAT VO-52 were successfully sent on March 14 during the 1400 UT 35 deg ascending Node pass over Bangalore, India.

The commands were successful and the CW message beacon of the Dutch transponder # 2, built by William Leijenaar PE1RAH, was heard in Bangalore loud and clear, some 6 years and 4 months since it was last switched on.

The Dutch SSB/CW transponder uses these frequencies:
Uplink:         435.2250 – 435.2750 MHz SSB/CW
Downlink:     145.9250 – 145.8750 MHz SSB/CW
Beacon:       145.8600 MHz CW

When working through linear transponder satellites such as VO-52 use as little power as possible, this will help extend the lifetime of the transponder and satellite batteries. As a guide ensure your downlink signal is no stronger than the satellite beacon. Low duty cycle modes such as SSB and CW are recommended.

How to work the SSB satellites such as VO-52

AMSAT-India Thanks You

HAMSAT VO-52 Activation Planned For Wednesday

HAMSAT VO-52 Falls Silent

Leijenaar Electronics


VO-52 Transponder Activation Postponed



It had been hoped that the amateur radio SSB/CW satellite HAMSAT (VO-52) would be reactivated on Thursday, March 8 but this has now been postponed.

More time is needed to carry out observations on the state of the satellite, which fell silent Feb. 28, so the activation has been put back by at least a week.

HAMSAT (VO-52) carries two linear transponders for SSB/CW operation. It had been using the Indian transponder but when it is switched back on it will use the Dutch transponder built by William Leijenaar PE1RAH. The frequencies used will be:

Uplink:         435.2250 – 435.2750 MHz SSB/CW
Downlink:     145.9250 – 145.8750 MHz SSB/CW
Beacon:       145.8600 MHz CW

Working the SSB satellites

HAMSAT VO-52 Falls Silent

Leijenaar Electronics


HAMSAT VO-52 Falls Silent



The amateur radio satellite HAMSAT VO-52 ceased operating on February 28, neither it’s beacon or 435/145 MHz SSB/CW linear transponder have been heard since.

Ib Christoffersen OZ1MY reported that he heard and briefly used the transponder on the pass with Acquisition of Signal (AOS)  in Copenhagen at 0826 UT on February 28. On the next pass with AOS at 1003 UT it was not on.

Mani VU2WMY provides this update:

Dear HAMSAT VO-52 users,

With regrets, we confirm the non-availability of the transponder on HAMSAT VO-52 since 28th February 2012. This is the first ever interruption in the services of HAMSAT since 5th May 2005.

The timely feed back from John K8YSE, Domenico I8CVS, Eugenio IZ8JHD, Jan PE0SAT and Nitin VU3TYG were highly appreciated and acknowledged by the ISRO’s HAMSAT Mission Management Board.

I’m herewith enclosing the mail received from Mr. T.Parimalarangan, Operations Director-HAMSAT VO-52 regarding the ‘Temporary Non-availability’ of VO-52 transponder and beacon.
Mr. Subramani VU2WMY:

Thanks for obtaining the user feedback. You may please post the following message in the Users website. If possible, try to find out who has last operated HAMSAT payload transponder on 28th and at what time

“HAMSAT Transponder services not available temporarily due to operational reasons. Inconvenience regretted”

With Best Regards,

Ph:  080 – 2202 9011 (O)
080 – 2535 0132 (R)
0 – 9480333563 (M)
080 – 2202 9062