[R-390] Differences between the balanced antenna and unbalanced antenna inputs

[Tisha Hayes]

There is one advantage of using the 125 ohm balanced antenna inputs; You
get a little bit more pre-selection through RF transformers T201 to T206.

When using the 50 ohm unbalanced connector (the C connector) it bypasses
those RF transformers.

You can see this on diagram 5-14

*Ms. Tisha Hayes, AA4HA*

*Senior RF engineer (4RF USA, retired)*