On Nov 4, 5:32 pm, "Tom N." wrote:
Any opinions? I plan to install a new Becker transponder in my ASW-28.
Should I go with the old mode C unit or pay extra for the new mode S
unit? Thanks.

The new Becker mode S unit is about the same price as the old A/C.
Its 2,064 Euros (plus $200 for an ACK-30 encode).
This is what I got for my Antares 20E... See:
http://www.becker-avionics.com/files...401-2-(01).pdf

Hope that helps,
Best Regards, Dave "YO"