Icom AH-4 Manual

Icom Radio AH-4

Læs nedenfor 📖 manual på dansk for Icom AH-4 (2 sider) i kategorien Radio. Denne guide var nyttig for 21 personer og blev bedømt med 4.5 stjerner i gennemsnit af 2 brugere

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1-1-32 Kamiminami, Hirano-ku, Osaka 547-0003 Japan A-8295H-1EX- Printed in Japanw
© 1997–2012 Icom Inc.
Tuning is required for each frequency. Be sure to 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.
 •Whentheantennacannot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) 9.1(D)inches× × 2.7(H)
All specifications are subject to change without notice or obligation.
Options D
•OPC-420 shielded control cable
ShieldedcontrolcablehelpsprotectthetransceiverfromRFfeed-
backandextendsseparationbetweentunerandtransceiverupto
10 m. (cable length 10 m; 32.8 ft)
•AH-2b antenna element
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
!1Rubbervulcanizingtape …………………………………1
Controlcable*(5m;16.4ft) …………………………………1
Coaxialcable*(5D-2V:5m;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.
RNEVER operate this tuner without a solid ground. Always
connect the ground wire to the ground terminal. DO NOT use
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! NEVER touch 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 ❍
 TheAH-4providesreliablematchingfrom3.5MHzto54MHz
whenusingatleasta7m(23ft)antenna;or7MHzto54MHz
when using the AH-2b .antenna element
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.Onceafrequencyismemorized,theAH-4
tunes on that frequency in less than 1 second. Note that the AH-4
doesnotmemorizeafrequencywhichis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beusedwithmostofIcomHFtransceiver,
whichcoversHFthrough50MHzbands.
 However,theIC-706andIC-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
antenna element kit (op-
tional)
Long wire
Long wire

Produkt Specifikationer

Mærke: Icom
Kategori: Radio
Model: AH-4

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