Vortex Antenna Systems 1 to 1 Ratio Wideband Current Choke Balun – Max Choke

Vortex Antenna Systems 1 to 1 Ratio Wideband Current Choke Balun - Max Choke

Vortex Antenna Systems 1 to 1 Ratio Wideband Current Choke Balun - Max Choke

£95.00

Product Code – VOR1TO1BALUNMAX

A hand wound and constructed very high efficiency 1:1 Choke Balun based on the tested designs of  Dr. Jerry Sevick W2FMI. Sometimes called a ‘Choke Balun’ or Common Mode Choke’, this 1:1 ratio current balun can be used to prevent feed-line radiation. This model features 2 stacked premium ‘K Ferrite Cores’ to maximise the choking impedance so this unit can be used to combat the most stubborn RFI problems.

Constructed using only premium parts (Mainly from the USA) this balun uses *RG303/RG142/RG400 MIL-17 Spec Silver Coated Coax and will handle power levels up to 5kw (3kw from 36 to 54mhz). Uses include at the feed-point of a YAGI antenna to prevent feeder radiation and to de-couple the feed-line of vertical antennas, preventing the vertical radiator using your coax feeder as a radial. Because 2 x ‘K’ series ferrites are used, choking impedance is over 10,000 ohms at 14MHz.

See info below for mechanical and electrical details

  Vortex Antennas 1 to 1 Ratio Max Choke Wideband Current Balun

Balun Ratio:  1 to 1 (No impedance transformation)
Enclosure:  Fibox Polycarbonate to IP67 Rating
Coax:  *RG303/RG142/RG400 MIL-17 Spec, Silver Coated Braid and Center Conductor. Solid Teflon Dielectric (USA)
Coax Rating:  Typical 8kw at 14.0Mhz (3.5kw at 50Mhz)
Ferrite Cores:  ‘K’ Series (Type 52 wideband material) (USA) x 2 Stacked
Connector (In):  SO239 – Silver Plated, PTFE inulated
Connector (Out):  SO239 – Silver Plated, PTFE insulated or Stainless Steel M6 Hex Head Bolts (User Selectable)
Frequency Coverage:  1-54MHz
Power Handling:  5kw (1-35mhz), 3kw (36-54Mhz)
Choking Impedance:  Variable – 1200 ohms (160m), 2625 ohms (80m), 6250 ohms (40m), 10100 ohms (20m), 7260 ohms (15m), 5050 ohms (10m)

* Stock dependant (RF characteristics of all three cables are nearly identical)