The reply to this question will not be short.


In general what people are talking about is the inexpensive GWS RX's (which are Single Conversion) and the more expensive FMA, Hitec Electron 6 and Hitec 555 (All three of which are Dual Conversion).

There is a difference in these RX's as far as range goes and as far as the number of glitches you will get. The Dual Conversion FMA's, and Hitec Electron 6 and 555 RX's will have better range and less glitches than the Single Conversion GWS models.



But, it is not just a matter of Single Conversion vs. Dual Conversion. IMHO There are many Single Conversion RX's which are just as good as Dual Conversion.

I found this out in 2001, so some of JR's newer RX's may have been changed over from Single Conversion, but up until that time, only one was Dual Conversion. I was curious if my R700 RX was Single Conversion or Dual Conversion. It didn't say on it's spec sheet. So after a brief phone call to the Tech Support, I found out that JR only makes one Dual Conversion RX. All the rest (including the R700) are Single Conversion.
Check it out by calling their tech department. That's how I found out. I've never had a problem with any JR RX I've owned.
Berg Receivers as well are Single Conversion. I've been using one for quite some time and have had no problems with either range or glitching.


You do not need a different TX to use a Single Conversion RX. They will work well as long as you have the right shift for the Radio System you are using. Positive Shift for JR and Airtronics, Negative Shift for Hitec and Futaba.


I too would not put a GWS RX in something like a Zagi. The range is too short, and the tendancy to get glitching when someone else is flying is too high. I've had a Hitec 555 in my Zagi for two years now and have had no problems. But, having said that, I would not use a Hitec Feather for a Zagi. Same Problems as the GWS RX's.

I would not hesitate to use a Berg 5 or a JR R700 for the Zagi either. Both of these should be good as well.


I hope this has helped.

Good Luck.