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How to generate RHS with crossed 19 ele Tonna

Hi and thanks for reading this...

I plan to install a new 19 element crossed Tonna for uplink on AO40, I have
a 70cm power splitter, and would appreciate some guidance on generating RHS
polarisation. These include:

a) Which element is feed with the quadrature of phase, to produce the
required 90 degree phase shift, RHS, is it the 1st driven element or second
element when viewed from the back of the antenna?

b) What is the most effective way of producing the driven element coaxial
feed lengths, these need to include fitted N-Type connectors.

Any advice would be gratefully received.

Kind regards,


G4IIO, IO-92-OG, Amsat-UK

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