QRM Canceller

The QRM Canceller is a highly efficient device designed to be easily inserted directly into the antenna feed line without requiring additional modifications to your radio system. With integrated PTT controls, the eliminator remains connected even during transmission. However, a supplemental auxiliary receiving antenna, such as a 2m antenna or a simple wire in your shed, is necessary. This setup enables the two antennas to capture unwanted signals, causing them to cancel each other out effectively through phase adjustments.

Features

• Effective Local QRM Elimination: Leveraging advanced orthogonal phase coherence, this QRM eliminator efficiently neutralizes local electronic noise (e.g., elevator controllers, high voltage arc discharges, power supply interference) even at high noise levels, ensuring a clearer reception by precisely adjusting antenna signal phases.
• Wide Frequency Range Support: Operating effectively from 1.8 MHz to 30 MHz, this QRM eliminator suits various HF applications, providing robust performance for shortwave listening and amateur radio operations.
• Simple Integration and Setup: Equipped with three BNC connectors for seamless integration, the device labels ports clearly as "Main", "AUX", and "TRX". An additional RCA PTT port handles transmission tasks without manual adjustments.
• User-Friendly Controls: Featuring intuitive Gain and Phase adjustment knobs, users can fine-tune settings to achieve optimal noise cancellation, ensuring an effective noise-cancellation process.
• Flexible Auxiliary Antenna Options: The device supports diverse auxiliary antennas, enabling adaptation to various noise environments, enhancing noise pickup for effective elimination.

Specifications

• Frequency Range: 1.8 MHz - 30 MHz
• Dimensions: 100 x 100 x 45 mm
• Interfaces: 3x BNC connectors (MAIN, AUX, TRX), 1x RCA (PTT)
• Power Supply: 13.8V DC / 150mA (5521DC jack)
• Antenna Ports: MAIN (main antenna), TRX (transceiver/receiver), AUX (auxiliary antenna)
• PTT Function: Activated when the RCA center pin is grounded
• Maximum Transmission Power: 100W
• Recommended Power: 12V battery or equivalent power source

Package Included

• 1 x QRM Eliminator Case
• 1 x PTT Cable
• 1 x DC Plug (INT 2.1mm EXT 5.5mm)
• 1 x SMA Loop Rod Antenna
• 3 x UHF/SL16-SMA