WISCO International- (MidLand SD-170 Specifications)

General	VHF model SD-171	UHF model SD-174
Frequency Range	148-174 MHz	450-490 MHz
Channels	16 (dip switch selectable or external serial command)
Channel Spacing	25 / 30 / 12.5 / 15 / KHz	25 / 12.5 KHz
PLL Step	5.0 / 6.25 / 7.5 KHz	5.0 / 6.25 KHz
Channel Spread	26 MHz	40 MHz
Antenna Impedance	50 Ω
Operating Voltage	7.2V DC to 18V DC, +/- 20%
Operating Temperature (-30° to + 60° C)	-22° to +140° F (-30° to + 60° C)
Frequency Stability	± 2.5 ppm
Current Draw Rx	<65 mA
Current Draw Tx	<1.0 A
Attack Time Rx to Tx	20 ms
Attack Time Tx to Rx	20 ms (no power saving)
PLL Lock Time	10 ms
Squelch Attack Time RF Level at Threshold RF Level at Threshold + 20dB	40 ms 30 ms
Squelch Decay	5 ms min., 20 ms max.
Baud Rate GMSK	Up to 9600
Baud Rate FFSK	Up to 4800
Dimensions [H x W x D]	4-5/16" x 2-5/16" x 1-1/4" [125 x 58 x 32 mm]
Weight	8.9 oz [253 gm]
FCC identifier	O7KSD171	O7KSD174
FCC Compliance	Parts 22, 74, 90.210
IC Certification Number	3690A-SD171	3690A-SD174
Receiver (measurement procedures made per ANSI /TIA/ EIA-603)
Sensitivity (12dB SINAD)	0.25 µV @ 12.5 kHz	0.25 µV @ 25 kHz
Selectivity	65 dB @ 12.5 KHz	70 dB @ 25 KHz
Intermodulation	70 dB @ 12.5 KHz	70 dB @ 25 KHz
Spurious Response	65 dB @ 12.5 KHz	65 dB @ 25 KHz
Audio Output	250mV @ 8 Ω (filtered) 250mV rms @ 10k Ω (unfiltered)
Transmitter (measurement procedures made per ANSI /TIA/ EIA-603)
RF Output	5 Watts
Spurious & Harmonics	60 dB
Modulation	16K0F3E / 11K0F3E / 19K6F3E
FM Hum & Noise	40dB @ 12.5 kHz 40dB @ 12.5 kHz;
Audio Distortion	2%
Unfiltered Modulation	100 mV RMS (input) 7m V rms (filtered modulation input)