Mastodawn

Small Magnetic Loop: A Guide to the Foldable 40m-17m Stealth Antenna https://vu3dxr.in/small-magnetic-loop-guide-to-foldable-40m-17m-antenna/

Small Magnetic Loop: The Foldable 40m-17m Stealth Antenna

Discover how to build and tune a high-efficiency Foldable Small Magnetic Loop Antenna for 40m-17m. Learn about Faraday coupling, high-Q circuits, and stealth HF operation.

DXR Electronics Bits

vu3dxr.in 8h ago

Sankagiri Fort: Complete History, Structure, and Significance https://gingeefort.online/sankagiri-fort-complete-history-structure-and-significance/

Sankagiri Fort: Complete History, Structure, and Significance

Sankagiri Fort is a historic hill fort in Tamil Nadu that reflects centuries of political change, military strength, and resistance. From ancient rulers to British rule and the sacrifice of Dheeran Chinnamalai, this fort holds deep historical importance.

The Gingee Explorer

vu3dxr.in 12h ago

RW4HFN Balcony Antenna for the 20-Meter Band https://vu3dxr.in/rw4hfn-balcony-antenna-for-the-20-meter-band/

RW4HFN Balcony Antenna For The 20-Meter Band - DXR Electronics Bits

Discover the RW4HFN balcony antenna design for the 20-meter amateur radio band—ideal for limited spaces. Includes schematic, dimensions, and inductance values

DXR Electronics Bits

vu3dxr.in 13h ago

Shortened G5RV Antenna – DX Power in a Smaller Package https://vu3dxr.in/shortened-g5rv-antenna-dx-power-in-a-smaller-package/

Shortened G5RV Antenna - DX Power In A Smaller Package

A compact, multi-band wire antenna based on the legendary G5RV design —specifically, a shortened version of G5RV antenna optimized for the 14-50 MHz range.

DXR Electronics Bits

vu3dxr.in 13h ago

Mosquito TRX: Single-MOSFET 40-Meter (7030 kHz) CW Transceiver https://vu3dxr.in/mosquito-trx-single-mosfet-40-meter-7030-khz-cw-transceiver/

Mosquito TRX: Single-MOSFET 40-Meter CW Transceiver

Detailed explanation of Mosquito TRX circuit. Learn how the IRF510acts as crystal oscillator/PA for QRP transmission and direct conversion mixer for 7030 kHz

DXR Electronics Bits

vu3dxr.in 16h ago

Practical guide to receiving HF weather fax WEFAX / Radiofax https://vu3dxr.in/practical-guide-to-receiving-hf-weather-fax-wefax-radiofax/

Practical Guide To Receiving HF Weather Fax WEFAX

Learn how to receive HF Weather Fax (WEFAX) images using SDR or shortwave radios. Step-by-step guide for radio amateurs with frequencies, software tools,

DXR Electronics Bits

vu3dxr.in 1d ago

Wandiwash Fort: History, Battle of 1760 and How to Visit Vandavasi https://gingeefort.online/wandiwash-fort-history-battle-of-1760-and-how-to-visit-vandavasi/

Wandiwash Fort: History, Battle of 1760 and How to Visit Vandavasi

Wandiwash Fort in Vandavasi, Tamil Nadu, is one of South India's most historically significant yet least visited monuments. From the 1639 land grant that gave rise to the city of Madras to the decisive 1760 battle that ended French ambitions in India, this fort witnessed events that shaped the entire subcontinent. Here is the complete story of the fort and a practical guide for visitors.

The Gingee Explorer

vu3dxr.in 1d ago

Super Mini Loop Antenna: A Compact Multi-Band HF Performer https://vu3dxr.in/w8ji-super-mini-loop-antenna-compact-multi-band-hf-performer/

W8JI Super Mini Loop Antenna: Compact Multi-Band HF Performer

Explore the real working principles of the W8JI Super Mini Loop antenna. Learn its design, multi-band behavior, and why ladder line is critical for efficiency.

DXR Electronics Bits

vu3dxr.in 1d ago

Radio Waves Weekly — Issue #009 https://vu3dxr.in/radio-waves-weekly-issue-009/

Radio Waves Weekly — Issue #009 - DXR Electronics Bits

Welcome to Issue #009 of Radio Waves Weekly! This week: CY0S has touched down on Sable Island — North Atlantic rare DX on the air right now.

DXR Electronics Bits

vu3dxr.in 2d ago

The Madurai Sultanate (1335–1378): Rule, Violence, and Resistance in Medieval South India https://gingeefort.online/the-madurai-sultanate-1335-1378-rule-violence-and-resistance-in-medieval-south-india/

The Madurai Sultanate (1335–1378): Rule, Violence, and Resistance in Medieval South India

A detailed history of the Madurai Sultanate (1335–1378), covering its rulers, conflicts, governance, and eventual fall under Vijayanagara.

The Gingee Explorer