Choke / Line Isolator 400w

Choke / Line Isolator 400w
Choke / Line Isolator 400w Choke / Line Isolator 400w
Brand: Ham Goodies
Product Code: HF-ISO4
Availability: 1
Price: £40.00
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A 1:1 Choke/Line Isolator for use across HF frequencies and handles up to 1kW RF power (assuming 1:1 SWR).  Internally, it's the same as our 1:1 Balun but with SO239 connectors at each end.  Wound using RG142 coax on an FT240-31 core, this Choke offers resistive performance 3.5MHz up to 30MHz - Much better than an "ugly-balun" made from 20ft of RG58 around a bottle/pipe!

Picture 3 shows the inside of a similar model, the Doublet/G5RV Choke which has the same core/coax, but screw terminals rather than an SO239 connector.

  • FT240-31 core, RG142 PTFE coax - perfect for full UK legal power!
  • Ideal for use at the base of a resonant vertical
  • Use in the Shack to reduce noise pickup from long coax run
  • Use before a 4:1 Voltage Balun feeding an off-centre-fed dipole
  • SO239 connectors for "in-line" use
  • Sealed with potting-compound - fully weather-proof
  • 120x80x40mm
  • Weight 585g
  • PDF Guide - 1:1 Line Isolator

We also have a 100w version in a smaller box, too!

Made (and used) by us - Be weary of any supplier who can't (or won't) tell you what's inside the box you buy!

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