Raymarine Ray101 Bedienungsanleitung PDF herunterladen (Seite 3)

the ability of the transmitter to send

signals out on the selected frequency.

Frequency stability measures the

transmitter’s ability to maintain

frequency accuracy over its entire

temperature operating range. Regula-

tions mandate an accuracy of 10 parts

per million, while industry groups

typically call for half that error. This

equates to being about 1550 hertz (Hz)

off frequency in the marine frequency

band.

Each transmitter test was done on

channel 16 at room temperature (75

F), as well as temperature extremes

near the maximum ranges of each

radio.

To reach the cold extreme, each

radio was put in a bait freezer at 15

F for four hours prior to testing. We

used a ﬁsh smoker as an environ-

mental chamber to get the radios to

high-temperature extremes. Each

was left to cook for two hours at 122

F and then immediately run through

another transmitter-power and fre-

quency test.

We also checked each unit’s low-

power setting, measuring both power

output and frequency accuracy. Fre-

quency stability was rated over the

entire range of transmitter testing; the

closer a unit held to the appropriate

frequency, the higher it was rated.

Receiver sensitivity is the ability

of the radio’s receiver section to hear

a weak signal. Typical marine VHF

receiver sensitivity ratings run from

.22 to .35 microvolts, with industry

groups recommending a minimum

.50 microvolts. Each radio receiver

was tested for the minimum signal

it could receive at a speciﬁc industry

standard setting between background

noise and generated signal (12 dB

SINAD). All the radios rated Good or

better, meaning they are more than

sensitive enough to pick up very weak

incoming signals.

Another receiver standard is se-

lectivity, the ability of the receiver to

reproduce only the signals you want

to hear, and not others, even though

they may be strong and nearby. Our

test equipment did not allow us to

test each radio for this characteristic.

Each manufacturer provided infor-

mation, which is listed in the chart

under selectivity; a higher number

is better.

Display ratings were based on the

size of the channel number display,

the amount of other information

shown, the value of the channel com-

ments, the size of the screen, and the

quality of the backlighting.

One important part of the marine

radio often overlooked is the audio

ampliﬁer and speaker. Boats can be

value guide: HandHeld vHFs over $175

MAKER RAYMARINE STANDARD HORIZON ICOM STANDARD HORIZON WEST MARINE STANDARD HORIZON STANDARD HORIZON ICOM

Model

Ray101 HX370S

ICM72

HX500S VHF 250 HX471S HX600S ICM88

Price $179.99

$179.99

$199.99 $199.99 $219.99 $299.99 $249.99 $271.95

Price Source pyacht.com pyacht.com westmarine.com westmarine.com westmarine.com westmarine.com pyacht.com pyacht.com

AA or AAA Battery Pack Included Included N/A

Optional Included Optional Optional Optional

Battery Warranty Period (Months) 0 18 12 18 12 18 18 12

Battery Type

Nickel Metal Hydride Nickel Metal Hydride Lithium Ion Nickel Metal Hydride Lithium Ion Lithium Ion Nickel Metal Hydride Lithium Ion

Battery Capacity (mAH)

1300 1400 2000 1400 1400 1400 1400 1700

Battery Replacement Cost

$22.50 $65 $129.99 $65 $69.99 $83 $65 $122

Maximum Charge Time

24 10 14 10 12 3 10 10

Claimed Time of Operation (single charge) (hrs) N/A

18 15 to 16 14 10 10 to 12 14 15

Tested Time of Operation (single charge) (hrs)

9 15+ 15+ 13 14 13 15+ 15+

Head Set N/A Optional Optional Optional N/A Optional Optional N/A

External Speaker/Microphone N/A Optional Optional Optional Optional Optional Optional Optional

Scrambler N/A Optional Yes Optional No Optional Optional No

*Frequency Bands M M, L M M A, AM, F, FM, M A, AM, F, FM, M, R A, AM, FM, M L, M

DSC Capabilities

No No No No N/A MMSI/LL MMSI/LL N/A

Unit Size (Inches W x H x D)

2.6 x 6.3 x 2.0 2.5 x 5.4 x 1.8 2.2 x 5.4 x 1.4 2.5 x 4.8 x 1.9 2.7 x 5.1 x 1.7 2.6 x 5.5 x 1.6 2.5 x 4.8 x 1.9 2.4 x 4.4 x 1.6

Weight (Ounces) 12.8 13.4 9.9 13.0 8.8 9.3 13.0 9.9

Tx Settings (Watts)

5/1 5/2.5/1 6/3/1 5/2.5/1 5/2.5/1 5/2.5/1 5/2.5/1 5/3/1

Transmitter Power Output and Stability

Good Good Excellent Excellent Good Good Excellent Good

Transmitter Frequency Stability

Good Excellent Fair Good Good Good Excellent Good

Receive Sensitivity Good Good Excellent Excellent Good Excellent Excellent Excellent

Selectivity (dB) 70 70 70 65 72 65 65 70

Display Rating

Good Excellent Excellent Excellent Excellent Good Excellent Good

Audio Output (dBA at 1 foot)

85 88 99 92 83 87 92 93

Audio Quality

Good Good Good Excellent Good Good Excellent Good

*Aircraft (A), AM Broadcast (AM), Family (F), FM Broadcast (FM), Land Mobile (L), Marine (M), Multi-Use Radio Service (R).

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