Ypu can up tpo a point swap crystals in the RECEIVER to chjange
channels, tho a re-tune of a couple of coils is advised if you move too
far from where it was originally set up.
The same IS true of a transmitter, except you are legally discouraged
from doing it.
If you don't know what you are doing, take the rig into the LHS.
A few other thoughts as well..
1) did you change transmitter frequency also? or just the new
receiver? If you changed transmitter frequency, your transmitter may
not be "hitting" on the right channel clearly enough for your receiver
to read. You can do a search here for pages upon pages of arguments
about changing transmitter frequency in the US by changing crystals
without retuning, but anyway, Futaba and the FCC recommend you have it
2) do the 2 receivers use the same crystal TYPE? be sure you have the
right crystal type, not a short crystal for a standard crystal
application, single conversion in a dual conversion receiver, etc.
3) try purchasing a new crystal and try the new receiver. Still no
hope this helps!
Crosswinds Equine Rescue, Inc
firstname.lastname@example.org (Sport_Pilot) wrote in message
Same brand but perhaps a dual conversion receiver instead of a single
conversion receiver? You possibly need a new crystal which is cut to a
different specification than the old RX crystal but operates your new RX on
the same channel as your TX..
AM, Single conversion AM and earlier PCM all took the same crystal made .455
MHz from listed frequency as the components on the board of the RX made up
Dual Conversion FM (PPM) and PCM receivers have recently become more
numerous and they have one or more crystal(s) hard mounted inside the case.
The removable crystal is made with only 10.7 MHz difference to the
If your old crystal worked in a single conversion receiver, it will not work
in a Dual conversion receiver and vice versa.
Check your receiver model type at http://www.futaba-rc.com/radioaccys/futl26.html
Alan's Hobby, Model & RC Web Links
The question is, why did you buy the replacement receiver? Was the
original in a crash? You may have damaged the crystal in the crash as
If you're replacing a crashed/failed receiver, get a new crystal too.
Polytechforum.com is a website by engineers for engineers. It is not affiliated with any of manufacturers or vendors discussed here.
All logos and trade names are the property of their respective owners.