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RP-176 Specifications

Power
Max Voltage into RP-176:		18 VDC 
Operating Voltage:			10-16 VDC  
Current Drawn:				<120 mA DC


Input/Output Signals
Rx Audio Input Impedance: 		475K Ohms
Rx Audio Input Level p-p: 		10 mV - 10V (in two adjustable ranges dip switch selectable)
Rx Audio Input Coupling: 		AC or DC Coupled (dip switch selectable)	
Rx Audio Input DC Level:  		+/- 50 VDC if AC Coupled, 0 to 12VDC if DC Coupled. 
Rx De-emphasis:				In/Out   (dip switch selectable)
De-emphasis time constant: 		517 uS	

COS Input Impedance:			>50M Ohms
COS Input P-P Swing:			.25V p-p to Supply Voltage (p-p)
COS Input DC Level:			0-10 VDC (adjustable intercept threshold provided)
COS Input Pullup Resistor:		100K (in/out dip switch selectable)

Tx Audio Output Impedance:  		4700 Ohms, AC coupled
Tx Audio Output Swing:			0-1 Vpp or 0-10Vpp (dip switch selectable)
Tx Audio Distortion:  			Less than 1/10 of one percent THD (Total Harmonic Distortion)

Tx Subtone Impedance:			4700 Ohms, AC coupled
Tx Subtone Output Swing:		0-10 Vpp (adjustable)
Tx Subtone Band Limiting:		270 Hz, 8 Pole Butterworth digital lowpass filter
Tx CTCSS Distortion:  			Less than 1/2 of one percent THD (Total Harmonic Distortion)
Tx DCS Characteristic:			Proper Butterworth Pre-Shoot (aids decoding)

Tx keying (PTT):			NPN pull to ground. Can sink up to 250 Ma of PTT current
Tx keying Protection:			Transzorb to Ground


Decoding Performance
No. of DCS Codes:			112	(all known DCS codes are supported)
No. of CTCSS Codes:			64	(all known CTCSS tones are supported)

DCS Decode Time:  			23 received bits, any start point. (171 mS)

CTCSS Decode Time: 	 		CTCSS		Typical
			 		-----------------------	 		
			 		254.1:		32  mS				 
			 		199.5:		40  mS				 
			 		100.0:		80  mS				 
			  		67.0:		120 mS	 
			  		33.0:		242 mS			 

Note: CTCSS decode occurs in 8 input cycles if the s/n is reasonable. Somewhat slower if noisy.


Mechanical 
Dimensions (W x H x D):			19.0 x 1.72 x 1.94 inch 	(48.3 x 4.37 x 4.93 cm)
Weight:					<2 lbs				( <0.91 kg )

Idylltek, Inc
PO Box 549
Idyllwild, CA 92549

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