2x AA USB Powered Battery Eliminator on SALE →

Collection: OCF Masters


A division of QC Avionix, LLC.

Conventional Off-Center Fed antennas start with the goal of making the antenna work well on the lowest frequency band placing the harmonic resonances high or outside the upper bands usually requiring an antenna tuner on some or all those bands. OCF Masters antennas are longer placing the resonant frequencies of the higher bands well within those bands. Capacitive loads are then used to pull the resonant frequency of the lowest one or two bands up towards the center of those bands. The placement of the capacitors is critical to avoid affecting the resonant frequencies of the upper bands. Click to view the 80M SWR Curves and the 160M OCF SWR Curves.

Capacitors connected to antenna wires are subject to two dangers. The first is static build-up caused by friction and natural electrical activity. A resistor across the capacitor bleeds off any accumulated charge saving the capacitor from electrical breakdown. Additionally, Capacitive loads are subject to high currents and high voltages especially on the lower bands. OCF Masters Loads are built to withstand both hazards. Running more power to the antenna than the Load rating will lead to capacitor and antenna failure. 

View our latest published articles on the OCF Masters Blog. 

4 products
  • 80M. 800 Watt OCF Antenna Insulator Kit
    1 AA Cell, 1.5VDC - Heavy Duty, International AC Source - Battery Eliminator - Battery Replacement - Battery Eliminator Store - aa battery eliminator, battery eliminator store, 9 volt battery eliminator, d cell battery eliminator, 9v battery eliminator, aaa battery eliminator, usb battery eliminator, replace 4 aa batteries with ac adapter, d battery eliminator, dummy aa battery with leads, aa battery eliminator power adapter, 9 volt battery adapter, aaa battery eliminator
    Regular price
    $45.95
    Sale price
    $45.95
    Unit price
    per 
  • 80M, 1.5-Kilowatt OCF Antenna Insulator Kit
    1 AA Cell, 1.5VDC - Heavy Duty, International AC Source - Battery Eliminator - Battery Replacement - Battery Eliminator Store - aa battery eliminator, battery eliminator store, 9 volt battery eliminator, d cell battery eliminator, 9v battery eliminator, aaa battery eliminator, usb battery eliminator, replace 4 aa batteries with ac adapter, d battery eliminator, dummy aa battery with leads, aa battery eliminator power adapter, 9 volt battery adapter, aaa battery eliminator
    Regular price
    $55.95
    Sale price
    $55.95
    Unit price
    per 
  • 160M, 800-Watt OCR Antenna Insulator Kit
    1 AA Cell, 1.5VDC - Heavy Duty, International AC Source - Battery Eliminator - Battery Replacement - Battery Eliminator Store - aa battery eliminator, battery eliminator store, 9 volt battery eliminator, d cell battery eliminator, 9v battery eliminator, aaa battery eliminator, usb battery eliminator, replace 4 aa batteries with ac adapter, d battery eliminator, dummy aa battery with leads, aa battery eliminator power adapter, 9 volt battery adapter, aaa battery eliminator
    Regular price
    $85.95
    Sale price
    $85.95
    Unit price
    per 
  • 160M, 1.5-Kilowatt OCF Antenna Insulator Kit
    1 AA Cell, 1.5VDC - Heavy Duty, International AC Source - Battery Eliminator - Battery Replacement - Battery Eliminator Store - aa battery eliminator, battery eliminator store, 9 volt battery eliminator, d cell battery eliminator, 9v battery eliminator, aaa battery eliminator, usb battery eliminator, replace 4 aa batteries with ac adapter, d battery eliminator, dummy aa battery with leads, aa battery eliminator power adapter, 9 volt battery adapter, aaa battery eliminator
    Regular price
    $105.95
    Sale price
    $105.95
    Unit price
    per