Dual Dynon comms
They work great and with Dynon it is plug and play as likely know. I had two set up in my RV7 and loved it, just had single switch for transmit select, Both fed into the intercom 100% of the time, so volume control was used to select audio. If you have an audio panel that will define Com 1 and Com 2 for you as well. I highly recommend you rethink about spending 250$ for the Dynon GPS antenna, I can't imagine having a high quality HDX 10" display and no moving map, synthetic vision, traffic (TIS), etc... for such a small investment and such an improvement in situational awareness, in my book, the later is priceless and I would go even further, the ASB out/in has proved so helpful in high traffic areas....staying alert OUTSIDE the cockpit is still so very important, but if you try it too, I doubt you will regret the $$$ to get traffic and map into your cockpit. Just a thought and kindly suggestion.
Dues paid 2017
RV7 built & sold, 500h of pure joy in the air: sold
RV10 slow build & flying & loving it