4:1 9:1 16:1 UnUn 250w

4:1 9:1 16:1 UnUn 250w
Brand: Ham Goodies
Product Code: HF-UNUN
Availability: 5
Price: £40.00

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A multi-ratio UnUn for use on HF (1.8-30MHz) with up to 250w RF power.  Sometimes, a single ratio just isn't enough if you're changing bands or out /P with different lengths of wire.  The 3 ratios allow you to easily find a better match to your radio/tuner - thus bringing the impedance down to a more suitable level for your ATU.

The 31-mix ferrite is more suited to the lower HF bands (below 15MHz).  43-mix is best for 5-30MHz.

Use of counterpoise/radials is advised.

  • 4:1, 9:1 and 16:1 taps
  • Choice of FT240-43 or FT240-31 core
  • Use with random end-fed wire or vertical - or see our End-Fed Halfwave Coupler
  • SO239 coax input and M4 (4mm) terminals for aerial+counterpoise
  • 80x85x55mm
  • Sealed with potting-compound - fully weather-proof
  • All fixings are stainless-steel
  • Weight: 300g

We like CB19917 from CPC for our aerial wire

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