Learn how a 31-meter double dipole antenna works for 80–10 meter HF bands. Includes dimensions, feedline setup, tuning tips, and performance notes.

Discover how to build a reliable 3-band hf antenna for 40m, 20m, and 10m. This modification uses an asymmetrical dipole and a toroid balun to deliver better SWR

Learn how to build and optimize Terminated Folded Dipole (T2FD) antenna. Discover recommendations for terminating resistors, 9:1 baluns, and spreader spacing

Crowned in 1642 amid a dying empire's ruins, Sriranga III spent three decades fighting to reclaim what Bijapur and Golkonda steadily took. He died in obscurity around 1678 — the last Raya, the last ho...

Baramahal — meaning 'Twelve Palaces' — is one of Tamil Nadu's most storied landscapes. Straddling the Krishnagiri plateau, its twelve hill forts witnessed Sangam-age chieftains, the splendour of Vijay...

WebFT8 brings FT8 decoding, waterfall display, and logging into your browser. Here's how it works and what it means for portable ham radio operators.

The Sri Ranganathaswamy Temple is encircled by seven granite walls spanning over six miles—a cosmic fortress representing the seven layers of the universe. Here, Chola kings fought Vaishnavas, Pandyas...

Pudukkottai was the only princely state in Tamil Nadu to hold its independence throughout British rule. Founded in 1680 by the Tondaiman dynasty — Kallars who rose from Vijayanagara-era chieftains to ...

In 1673, a rejected marriage proposal between two Nayak kings ignited one of South India's most dramatic sieges. Tanjore Fort fell to cannon fire, a poet-king chose death over surrender, and a dynasty...

In 1262 CE, near the sacred temple town of Srirangam, the armies of Pandya king Jatavarman Sundara Pandya I met the forces of Hoysala king Someshwara in a battle that ended Hoysala ambitions in the Ka...

Chokkanatha Nayak inherited a fractured throne at sixteen. Two decades of war, betrayal and a Deccani warlord named Rustam Khan later, Madurai lay in ruins, its king a puppet in his own palace, its fu...

Anchettidurgam, or Anchetty Durgam, is a ruined hill fort in Tamil Nadu's Krishnagiri district. Once a formidable stronghold under Hyder Ali and Tipu Sultan, it fell to the British in 1791 during the ...

A practical microphone pre-compressor circuit for SSB transceivers using JFET and transistor stages. Improve transmit audio clarity and power in amateur radio

FM Radio Transmitter takes your voice from a microphone and turns it into a r signal. Then, this radio signal can be picked up by any standard FM radio nearby.

A crystal controlled FM transmitter is a radio frequency circuit that uses quartz crystal oscillator to generate a stable, precise frequency for FM transmission

Build your own DIY Moxon Rectangle Beam Antenna for 10m, 15m, and 20m bands. This step-by-step guide covers dimensions, wire construction, and tuning tips for a compact, high-gain directional antenna ...

Multiband dipole antenna covering 10, 11, 15, 20, 40, and 80 meters using loading coils and a matching section. Compact HF antenna requiring external tuner.

Explore Rayakottai Fort, the historic Baramahal stronghold captured by Tipu Sultan and later the British in 1791. This guide covers the fort's pivotal role in the Mysore Wars, the trek to the granite ...

Empires rose and fell on a single afternoon. These ten battles—each analyzed through background, combat, and aftermath—carved the political map of the Tamil, Telugu, Kannada, and Malayalam countries. ...

A crystal controlled FM transmitter is a radio frequency circuit that uses quartz crystal oscillator to generate a stable, precise frequency for FM transmission

Discover TinyDX an ultra-compact open-source HF digital modes transceiver by WB2CBA. Learn its features, hardware design, supported bands, and how to build one.

The LM1458 is a dual op-amp used in audio amplification circuits. Here how you can create a simple microphone compressor using the LM1458.

This blog post examines a well-designed FT8 digital interface circuit that provides both audio coupling and PTT (Push-to-Talk) control.

The Second Mysore War (1780–1784) was one of the fiercest conflicts between Mysore and the British East India Company. Learn about the causes of the war, Haidar Ali's invasion of the Carnatic, the dev...

In January 1565, four Deccan sultans marched against an aging regent who thought himself unbeatable. What followed near a village called Rakkasagi was not a lost battle so much as the end of an age. C...

Three hundred years ago, Madras was a scatter of fishing villages on the Coromandel Coast. This first part of the series follows Francis Day's search for a trading post, his 1639 land grant from the R...

In 1308, Sundara Pandya murdered his father, Emperor Kulasekhara. The succession war with his brother Vira Pandya left Madurai defenseless. Sundara’s plea to Malik Kafur brought Delhi’s cavalry in 131...

Long before highways connected Chennai to Chidambaram, a small river-mouth town called Porto Novo ruled the Coromandel trade. Dutch merchants, Swedish sailors, Maratha horsemen, and British generals a...

Anchettidurgam, or Anchetty Durgam, is a ruined hill fort in Tamil Nadu's Krishnagiri district. Once a formidable stronghold under Hyder Ali and Tipu Sultan, it fell to the British in 1791 during the ...

In 1667, on the banks of the Kaveri, a confederacy raised in the name of a fading Vijayanagara prince collided with the rising Kingdom of Mysore. The Battle of Erode decided who would rule Kongu Nadu,...

Gingee Fort stood as one of South India's toughest strongholds under the Nayaks, a Telugu warrior line that governed the region for over a century. Starting as Vijayanagara viceroys, they built temple...

In the 1830s, Collector John Blackburne tore down Madurai's forty foot fort walls and filled its moat, ending two centuries of fortified city life. Behind the official story of hygiene and expansion l...

In September 1767, the sacred city of Tiruvannamalai became the crucible of the First Anglo-Mysore War. While Hyder Ali sought to breach the Company’s power, Colonel Joseph Smith delivered a decisive ...

He was only twenty-two years old. He commanded 350 horsemen against an army of 18,000. He lost. But in losing, Raja Tej Singh of Gingee won something greater than any battlefield victory—immortality i...

When the polygar Tumbichchi Nayaka seized the fortified town of Paramakudi and defied the Madurai Nayak throne in the 1560s, he triggered a military confrontation that would test the limits of Vijayan...

The Polygar system of Madurai was a network of 72 warrior-chieftain territories established by Viswanatha Nayak in the 16th century. Dominated by Nayak chiefs, it shaped southern Tamil Nadu for two ce...

This piece follows Ramnad’s journey from a Marava warrior kingdom under the Sethupathis to one of Madras Presidency’s largest zamindari estates, explaining its rulers, temples, revenue systems, and ev...

Bangaru Tirumala Nayaka — royal kinsman, military commander, and reluctant claimant to the Madurai throne — lived through the most turbulent chapter in Nayak history. His family's story did not end wi...

Between 1720 and 1729, two claimants to the Ramnad throne, a plague, betrayed alliances, and a Thanjavur Maratha intervention combined to fracture the powerful Marava kingdom of southern Tamil Nadu in...

In 1637, the death of a Sethupathi ruler in Ramnad triggered a bitter succession dispute between an adopted prince and a natural-born son. What followed was nearly a decade of palace intrigue, Nayak i...

Explore 75+ in-depth articles on Tamil history — dynasties, battles, forts, and colonial resistance — from Sangam Age to the British era

The First Carnatic War (1746-48) was more than a distant echo of European conflict; it was a brutal baptism of fire for the British and French in India. It exposed the weakness of local powers, introd...

Following the death of the Nizam of Hyderabad, a brutal power struggle erupted in Southern India. As the French backed one claimant, the British backed another. Enter Robert Clive, whose daredevil cap...