Range check is completed antenna collapsed (except on the 9C which requires antenna extended one segment).
Your receiver needs checking/service if the other 3 range fine.
Range checks vary dramatically depending upon the area at which you fly, your installation, position of antenna, etc. However, if your other 3 models have always shown the same range and still do, that is likely your "good" range check for that radio in those conditions.
Question -- have you changed the crystal in your TX module to a different channel? if so, it is CRITICAL you have that module retuned for safety reasons, for FCC regulation reasons, and for performance reasons.
Sincerely,
Mrs. AnnMarie Cross
Senior Manager, Proprietary Services and Support
Great Planes Model Distributors
[email protected]
www.greatplanes.com
www.bestrc.com
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