Cobra Electronics MR HH200 VP owner manual Maintenance Troubleshooting, Specifications

Maintenance And

Troubleshooting

Operating Your Radio

Maintenance

•

Very little maintenance is required to keep your CobraMarine™ VHF radio in good operating condition.

■Keep the radio and charger clean by wiping with a soft cloth and mild detergent. Do not use solvents or harsh or abrasive cleaners, which could damage the case or scratch the LCD screen.

■If the radio is exposed to salt water, wipe with a soft, moist cloth at least once a day to prevent build-up of salt deposits, which could interfere with button operation.

■If the radio will be stored for a long period, such as over the winter, remove the batteries from the battery compartment and store them in a separate package. This is especially so if you are using alkaline batteries.

	Troubleshooting			•
	Problem	Possible Cause(s)		Solution(s)
	No display on LCD	Batteries are exhausted	Replace or recharge batteries
	when radio is turned	Batteries not installed	Remove batteries and
	On
		properly	reinstall according to
			polarity markings
	NiCD batteries run	Batteries are at the	Replace with new batteries
	down quickly	end of their life
	Will transmit at	Batteries are low	Replace or recharge batteries
	one-half (1⁄2) watt,	Selected channel is	Switch to
	but not at two (2)
		limited to one (1) watt	another channel
	watts
	Will not transmit	Selected channel is	Switch to
		limited to receive only	another channel
	No sound from speaker	Volume level is too low	Re-adjust volume
	No response to	Button Lock is On	Press and hold
	button press		Hi/Lo Power-Lock button
	No answer to calls	Out of range of	Switch to two (2) watts
		other station	or move closer
		Signal is blocked	Move until you have
		by terrain	a “line-of-sight” to
			the other station
36 English

Operating Your Radio	Specifications
Specifications	•
General

Frequency Range: TX	156.025 to 157.425 MHz
Frequency Range: RX	156.050 to 163.275 MHz
Number of Channels	All U.S., Canadian, and International
	10 NOAA Weather Channels
Channel Spacing	25 kHz
Modulation	16 KOF3E
Input Voltage	6 VDC
Battery Life:	Alkaline Batteries:
5% TX, 5% RX, 90% Stand-by	20 Hours @ 2 Watts, 24 hours @ 1⁄2 Watt
Current Drain:	10 mA
Stand-by
Receive	35 mA
Transmit	700 mA @ High power 200 mA @ Low
Temperature Range	-20˚C to 60˚C
Radio Dimensions W x D x H	2.13" x 1.2" x 8.77" (including antenna)
	(4.1 mm x 0.5 mm x 22.8 mm )
Radio Weight	4 oz. (without batteries)
	(0.1 kg)
Receiver
Frequency Range	156.050 to 163.275 MHz
Receiver Type	Double Conversion Super-Heterodyne
Sensitivity:	0.35 uV
20 dB Quieting
12 dB Sinad	0.30 uV
Adjacent Channel Selectivity	-50 dB
Intermodulation and Rejection	-60 dB
Spurious and Image Rejection	-50 dB
AF Output	250 mW @ 8 Ohms
Transmitter
Frequency Range: TX	156.025 to 157.425 MHz
RF Output Power	1⁄2 Watt and 2 Watts
Spurious Emissions	-60 dB High -55 dB Low
Microphone Type	Condenser
External Microphone Impedance	1000 Ohms
Frequency Stability	+/-10 ppm
FM Hum and Noise	-45 dB
	Nothing comes close to a Cobra® 37