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Toroid 2643251002 (type 43)

€9.00
(Inc. Tax)
€7.50
(Ex. Tax)

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2643251002
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Toroid 2643251002 (type 43)

Toroid 2643251002

Ferrite Toroid, type 43 material. This model of toroid has been found by various hams to be a good choice for ununs for EFHW antennas, for an average power of up to about 40-50W.

For QRP use, you might like to consider a 2643625002 toroid instead (smaller, lighter and cheaper than this toroid).


Outside Diameter= 1.54 in / 39.1 mm +/- 0.75 mm
Inside Diameter = 0.66 in / 16.75 mm +/- 0.50 mm
Height = 0.875 in / 22.2 mm +/- 0.80 mm

 2643251002.jpg

 

References:

  • "Building an UNUN for an EFHW Antenna" article by Mike Dunstan G8GYW, in Practical Wireless October 2023

 

Also available from our international agent(s):  
Logo for The Ham Shack, New Zealand

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  • 5
    2643251002 Toroid

    Posted by Doug Hanson G8KOM on 31st Oct 2024

    90% efficient for end fed halfwave antenna tested with a Nano VNA & Rig Expert.