Skystrider wrote:That approach worked great for me in my old Luscombe especially with the external antenna. I am thinking maybe that is the way to go in the 701.
I'm really happy with my DRE portable intercom and Icom A5 radio for my Savannah. I made a simple 9 volt power supply for the intercom so I don't need to feed it batteries. I bought a 12 volt dc power cable for the ICOM, so it is running on ship power, too. I mounted the intercom low, out of the way since it isn't messed with much. I made a slip on mount for the radio to position it in easy reach of my left hand, since, like the Zenith 701, the right hand is on the stick. I made my own antenna cable and antenna from about $5 worth of part. This system will work fine at distances of 40 miles when both planes are in the pattern at different airports. At higher altitudes you can hear folks a hundred miles away, but not talk, usually. The only downside of all this is it does not look as nice as panel mounted stuff. Personally that doesn't bother me at all. 'Course, this is a guy that didn't bother to paint his plane, either.
What ever you do for the intercom, if you get one with auxillary inputs and outputs, you will be able to connect phones, mp3 players, and other goodies without having to install an audio panel. You also won't have to buy the expensive headphones unless you want to. For a plane that will primarily use a gps handheld for navigation and only deal with one radio, I just can't see bothering with the expense, weight, and trouble of an audio panel.
As far as the transponder goes, you don't have to make the purchase right away, unless you are based in some evil Bravo or Charlie airspace. I fly in the Willamette valley in Oregon, and never go to Seattle, Portland, Boise, or Reno. I've flown in the general direction, but the little airports on the outskirts are far more interesting to me than the big ones. I've been to a number of class Delta airports, and they have never turned me down for not having a transponder. So if your anticipated flights don't require it, wait. $2000 will buy a lot of gas.
Best luck!
tom