YU7EF 6m and 4m Duo band antenna

Here you will find the results on YU7EF duo band 6,4m  5elm yagi with 12mm elements build by OZ1DJJ.

Pop Have on he's web www.yu7ef.com a 5 elm 4/6m duaband Yagi  made of taper elements. I ask Pop to make another design of the same yagi with 12mm Alu tubing,  he was so kind to provide me with this information.

 Here is data of YU7EF Pop 5 elm 4+6m douband with 12mm Alu tubing

More pic's on OZ1DJJ Duo band antenna  will soon come!

first 6m element on the boom

The two first 6m elements is on boom

Elements has to be isolated from the boom, I have made elements support like on pic

duo band almost done..only need the dipole

duo band almost done..only need the dipole

duo band almost done..only need the dipole

Done. 6m,4m Duo band under test

Done. 6m,4m Duo band under test

Done. 6m,4m Duo band under test

 

Measurements on 6m,4m 5elm yagi :

All measurements here under is made when antenna mount on tower

Return Loss 48-72Mhz

Smith charts sweep 48-72Mhz

Return Loss 4m

Smith charts sweep 68-72Mhz

Return Loss 6m

Smith charts sweep 48-52Mhz

 

Duoband and the old 6elm 6m

 

 

Design: