QRO ferrite and iron powder cores for your professional project !


There are our own new ferrite and iron powder cores for QRO ununs in the Stack Matches, current baluns, phase shifters (4SQ), 90deg hybrid etc.

Cores are made from C10A material (BLUE) which is similar to -61 and -2 (RED) from Amidon.

QRO64-61 is almost the same size as FT240-61. Little bigger. This core can be use as unun for about 3,5kW in DX mode and about 2,5kW in the contest one. QRO64-2D-61 is two times higher. Thanks this it can simply handle 6kW in DX mode and 4kW in the contest one.

The biggest core is QRO89-2D-61. This core is 2 times higher than FT350-61. (compare the price) You can use this BIG core for 10kW+ applications.

The iron powder core QRO-T300-2D could be easily use for the high power ( 5kW RTTY ) 90deg hybrids in 4SQ, 2el vertical array etc. Also in high power PI L networks in 5kW+ PAs.

Picture Code Dimensions unun 1:2,25 / PH shifter
Compare size to the black core. What is Amidon FT240-61


Stack match 1-2

Stack match 1-3

4-SQ hybrid

4-SQ hybrid - 8 directions