Icom IC-7700 PBT CLEAR SWITCH, ✔What is the PBT control, ^3DIGITAL RF SELECTOR SWITCH DIGI-SEL, ^4DIGITAL RF SELECTOR CONTROL [DIGI-SEL]

1 PANEL DESCRIPTION

■Front panel (continued)

		TX	RX		SPLIT	LOCK					TWIN-PBT
								1.8	3.5	7
								1	2	3	FILTER
								10	14	18
								4	5	6
								21	24	28	PBT-CLR
								7	8	9
								GENE	50	F-INP	DIGI-SEL NOTCH
									0	ENT
											DIGI-SEL
									MP-W	MP-R
									MW	V/M	APF/TPF
											NOTCH
									A/B	A=B
										TS	RIT/∂TX
											RIT
								XFC
											∂TX
											CLEAR
	F-1	F-2	F-3	F-4	F-5	F-6	F-7				CW PITCH
											SPEECH
	SSB	CW	RTTY/PSK	AM/FM	DATA	M.SCOPE	EXIT/SET	AUTO			LOCK
								TUNE
							REC PLAY				SPLIT
DRIVE	COMP	MONI GAIN	VOX GAIN	ANTI VOX	CONTRAST	BRIGHT	VOICE MEMORY

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&1&0 ^9

^1PASSBAND TUNING CONTROLS [TWIN-PBT] (p. 5-12)

Adjusts the receiver’s IF filter “passband width” via the DSP.

•Passband width and shift frequency are displayed in the multi-function display.

•Push and hold PBT-CLRfor 1 sec. to clear the PBT settings.

•Adjustment range is set to half of the IF filter passband width. 25 Hz steps and 50 Hz steps are available.

✔What is the PBT control?

The PBT function electronically modifies the IF passband width to reject interference. This transceiver uses the DSP circuit for the PBT function.

PBT1

PBT2

– +

High cut Center Low cut

^2PBT CLEAR SWITCH PBT-CLR(p. 5-12) Clears the PBT settings when pushed and held for 1 sec.

•The [PBT-CLR] indicator above this switch lights when PBT is in use.

^3DIGITAL RF SELECTOR SWITCH DIGI-SEL

(p. 5-18)

Turns the digital RF preselector ON and OFF.

•The [DIGI-SEL] indicator lights green when the prese- lector is in use.

^4DIGITAL RF SELECTOR CONTROL [DIGI-SEL]

(p. 5-18)

Adjusts the digital RF selector center frequency.

•The control can be reassigned as the audio peak filter adjustment (p. 12-16)

Higher frequency

Lower frequency

1-10