I long for the days where the manufactorers gave REAL Tech specs on their equipment.
I guess I'm not going to get an answer to my question concerning the R309DPS and R319DPS.
Bax, I read the commercially available size and weight specs on the 2 receivers so I knew that information already and you should have realized that by my question ( 21 grams difference ).
If you can answer my original question concerning selectivity, sensitivity, image rejection, etc. I'd be glad to see it. I've been a Futaba user for sport and competition for 16 years.