Icom AH-4 Bruksanvisning

Läs gratis den bruksanvisning för Icom AH-4 (2 sidor) i kategorin Radio. Guiden har ansetts hjälpsam av 32 personer och har ett genomsnittsbetyg på 4.4 stjärnor baserat på 2 recensioner. Har du en fråga om Icom AH-4 eller vill du ställa frågor till andra användare av produkten? Ställ en fråga

1-1-32 Kamiminami, Hirano-ku, Osaka 547-0003 Japan

A-8295H-1EX-w Printed in Japan

© 1997–2012 Icom Inc.

Tuning is required for each frequency. Be sureto retune

the antenna before transmitting when you change the fre-

quency— even slightly.

(eg. IC-7000)

Set the desired frequency in an amateur band. q

•TheAH-4willnotoperateonfrequenciesoutsideofham

bands.

Hold down [TUNER/CALL] for 1 seconds. w

•“ ” indicator appears while tuning.

Hold down [TUNER/CALL] for 1 second.

“e” indicator stays ON when tuning is complete.

•Whentheantennacannotbetuned,“” indicator blinks,

and the AH-4 is bypassed and the antenna is directly connected

to the antenna connector on the transceiver.

To manually bypass the AH-4, push [TUNER/CALL]. r

OPERATION

Specifications D

•Frequencyrange:3.5–54MHz(withanantennalonger

than 7 m; 23 ft)

7–54MHz(withtheAH-2b)

•Maximuminputpower:120W

•Inputimpedance:50Ω

•Tuningpowerrequired:5to15watts

•Ratedvoltage:13.8VDC±15%

(current less than 1 A)

•Usabletemperaturerange:–10°Cto+60°C(+14°Fto+140°F)

•VSWR:2.0:1orless(exceptantennasa

one half wave or multiple of a one

half wave in length)

•Weight(approximately):1.2kg(2.65lb)

•Dimensions:172(W)×69.5(H)×230(D)mm

(projectionsnotincluded);6.8(W)× 2.7(H) ×9.1(D)inches

All specifications are subject to change without notice or obligation.

Options D

•OPC-420shieldedcontrol cable

ShieldedcontrolcablehelpsprotectthetransceiverfromRFfeed-

backandextendsseparationbetweentunerandtransceiverupto

10 m. (cable length 10 m; 32.8 ft)

•AH-2bantennaelement

A2.5mlongantennaelementformobileoperationwithAH-4.Fre-

quencycoverage:7–54MHzwiththeAH-4.

SPECIFICATIONS AND OPTIONS

U-bolts q………………………………………………………2

U-bolt brackets w……………………………………………2

Flatwashers(M6large)e……………………………………8

Flatwashers(M6small)r……………………………………4

Springwashers(M6)t………………………………………8

Nuts(M6)y……………………………………………………8

Hexheadbolts(M6u×50) …………………………………4

Self-tappingscrews(A06i×30) …………………………4

PL-259 connectors o…………………………………………2

!0Weatherproofcap…………………………………………1

!1Rubbervulcanizingtape…………………………………1

Controlcable*(5m;16.4ft)…………………………………1

Coaxialcable*(5D-2V:5m;16.4ft)…………………………1

*Not shown in the illustration to the left.

INSTRUCTIONS

HF+50MHzAUTOMATICANTENNATUNER

AH-4

Thank you for purchasing the AH-4 HF + 50 MHz AU-

TOMATIC ANTENNA TUNER. The AH-4 matches your

transceiver to an antenna more than 7 m/23 ft long (3.5–

54MHz),ortheoptionalAH-2b(7–54MHz).

Please read these instructions thoroughly before installing

and operating the AH-4.

RNEVERoperate this tuner without a solid ground. Always

connect the ground wire to the ground terminal. DO NOTuse

the mounting plate as a ground terminal.

NEVERtransmitortunewithoutanantennaconnected.Fail-

ure to use an antenna will damage the tuner.

RHIGH VOLTAGE!NEVERtouch the antenna while trans-

mitting or tuning. Place the antenna in a position where you

are sure it will not be touched.

DANGER!

WIDE TUNING RANGE ❍

TheAH-4providesreliablematchingfrom3.5MHzto54MHz

whenusingatleasta7m(23ft)antenna;or7MHzto54MHz

when using the AH-2b antennaelement.

AUTOMATIC DIGITAL CONTROL TUNING ❍

Thebuilt-in8-bitmicroprocessorchoosesthelowestSWRusing

more than 1,040,000 different LC (coil/capacitor) combinations.

45 FREQUENCY MEMORIES FOR FAST TUNING ❍

The LC combinations of 45 previously-used frequencies are auto-

maticallymemorized.Onceafrequencyismemorized,theAH-4

tunes on that frequency in less than 1 second. Note that the AH-4

doesnotmemorizeafrequencywhichisnormallytunedwithin2.5

seconds.Memoriesareretainedonlywhenthepowerison.

WEATHERPROOF DESIGN ❍

The AH-4’s tightly sealed plastic case allows convenient mount-

ing virtually anywhere. The AH-4 can be mounted outdoors under

your antenna.

0.3 W RADIATED POWER ❍

Radiatedpowerduringtuningislessthan0.3W,minimizinginter-

ference to other stations.

✍NOTE:

TheAH-4canbeusedwithmostofIcomHFtransceiver,

whichcoversHFthrough50MHzbands.

However,theIC-706andIC-736canonlybetunedinthe

3.5–30MHzrange.

FEATURES

SUPPLIED ACCESSORIES

Ground terminal

Mounting plate

q

w

e

r

t

y

u

i

o!0

!1

CALCULATION OF UNDESIRABLE ANTENNA LENGTHS

Length of

half wave

(½ λ)

=

300

×

1

Operatingfrequency(MHz)2

[EXAMPLE]Antennalengthstoavoidwhenoperatingat29.00

MHz

Multiple

of ½ λ

=

300

×

1

×

(1, 2, 3…)=5.2, 10.3, 15.5 m

29

2

Fig.6 MOUNTING EXAMPLES

AH-2b+longwire

AH-2b

antennaelementkit (op-

tional)

Long wire

Long wire

Produktspecifikationer