Motorola CT-39A - Manual (Page 23)

21 FT-8800R Operating Manual
S
ELECTING THE
F
REQUENCY
B
AND
Press and hold in the “left” DIAL knob to move the operating band on the “left” band
144 MHz 250 MHz 350 MHz 430 MHz 850 MHz 144 MHz ......
Press and hold in the “right” DIAL knob to switch the operating band on the “right” band
430 MHz 850 MHz 144 MHz 250 MHz 350 MHz 430 MHz ......
1) You may select the operating band on the “Main” band by pressing and holding
in the microphone’s [P1] key for 1/2 second.
2) The FT-8800R may be configured to operate either in a V-V or U-U mode, if needed.
B
ASIC
O
PERATION
VHF-VHF (V-V) Operation UHF-UHF (U-U) Operation
Notice
The FT-8800R may receive very strong signals on the Image frequency, and/or the receiver
sensitivity may be somewhat reduced by the combination of the “Left” and “Right” band
frequencies while Dual Receive operation is engaged.
If you experience interference that you suspect may be coming in via an “Image” path, you may
calculate the possible frequencies using the formula below. This information may be used in the
design of effective countermeasures such as traps, etc.
(“Left” band freq. ± 45.05 MHz) x n1 – (“Right” band freq. ± 47.25 MHz) x n2 =
“Left” band IF freq. or “Right” band IF freq.
(n is an integer: 1, 2, 3, …)