Hello, I am the person who asked you about the 72-5 and 72-11 AM crystals. Would you please recheck your answer for me. you stated that a 72-5 is a transmit crystal, so I pulled it out of my Rx and it definately says it is an Rx crystal. I appreciate further info.
Thanks,
Steve

Please go to: http://ssboucher.home.westpa.net/xtal.jpg
to view the crystal

Hi ssboucher,

We are sorry for the incorrect information, the crystals are the same, whether stamped 72-11 or 72-5. They are both receiver crystals and they are interchangeable.

The ones marked 72-5 just indicate that they are older crystals. Newer ones are 72-11.

I hope you find this information helpful. You can also reach our Futaba support technical team at 217-398-8970, or via fax at 217-398-7721.

Sincerely,
Krysta
Lead Futaba Customer Service and Programming Technician
Also you may want to check our Website at (http://www.futaba-rc.com)