Search results
29 lut 2016 · On the subject of UNUN (unbalance to unbalance), ordered yesterday a toroid T130-2, to make a 9:1 UNUN for an End Fed 6-40 meter HF antenna matchbox. Tutorial is on the EARC website at Emergency Amateur Radio Club - Hawaii
An 80-10 end-fed half-wave antenna can be a very good performing part of an HF station. But its performance depends heavily on a well-designed and carefully constructed 49:1 unun, which matches the long wire impedance to within tuning range of operation. But the perfor-mance of an end-fed antenna is also very dependent on height above ground.
Power handling of 2kw from 1.5 to 54MHz. SO-239 connectors are silver plated with teflon insulation. All Hardware is stainless steel. Studs are 1/4″. Very high efficiency (98-99%). Unun is installed in weatherproof 4″ X 4″ X 2″ NEMA box which makes an excellent outdoor weatherproof enclosure.
End Fed Half-Wave (EFHW) antenna unun kit, (EFRW) CLUB PROJECT x10 QRP by KM4CFT
50:450 ohm (9:1) Balun or Unun Core Kit, 1.8-30 MHz, 250 watts PEP, end fed, T2FD antenna
End Fed Half-Wave EFHW QRP antenna unun kit EFRW End Fed Random KM4CFT 400 sold! Opens in a new window or tab
UNUN 9:1 or 4:1- 3kW ICAS. This is is dual 9:1 and 4:1 UNUN used for popular “non-resonant” length END FED wire antennas or verticals like 27 or 43 feet. You can add your own wire or get the complete product from this link EFLW-3K antennas. UNUN Features:
