Report
ῌ VHF/UHF
῏ῌ῍ῒ+ῌῑῐΐ,
Measurement on sensitivity of radio communication in coastal regions of Syowa Station, Antarctica
Hiroyuki Ujiie+and Nobuhiko Kizu, ,**--+3;,**-/,-
Abstract: The sensitivity of radio communication for VHF/UHF bands was checked on the sea ice and the coastal regions in the southern regions of Syowa Station.
The measurement was carried out by the Communications equipments actually used during the field observation and the sensitivities on measuring points clarified. The result of UHF and VHF bands will be useful for field party in that area.
῎: !"#$% &'() *+VHFῌUHF,+
-."/01%2 34567189:;+ <=>?@ABC VHF) UHFD18EFG H)I9 H?JK)GL%2 M+NOPC M+
+/0Q)L8RSGT)GUVW2
+ 2 P X $
+&'(Y+/0Z[PC \]<^_`a[bB8c%2 /0dPe f)18VHFῌHF?67gB8c%?C hgAUHF,?79AB<WGL
%2 ei675cVHFῌUHFPC /0[jd+RkGef5l2 m+%$n oC pAqrstuv5+&'(98 )+wx"[9C yuz{)+|}~+)s !>"K1%2 mB<
^C .dPKG4Y+pGj?K5cM))GL%2
, 2 &
.-Q5PC ,**,++/pA++p8ῌ +/0Z[
+.- Qῌ ¡2 Ministry of Public Management, Home A#airs, Posts and Telecommunications, ,nd Bldg. of the Central Common Government O$ce, ,ῌ+ῌ, Kasumigaseki, Chiyoda-ku, Tokyo+**ῌ23,0.
,.- Qῌ¢2 Japan Meteorological Agency, Otemachi+ῌ-ῌ., Chiyoda-ku, Tokyo+**ῌ2+,,.
£¤C Vol..1, No.,,,2,ῌ,21,,**-
Nankyoku Shiryoˆ (Antarctic Record), Vol..1, No.,,,2,ῌ,21,,**-
῍,**-National Institute of Polar Research
ῌ +
Fig.+. Route for the expedition as well as response for radio communication.
ῌVHFῌUHF 283
,**- SM .+, !"#$%&'
,.+.
()*+,-+. /0῍12345)6789#:()*
#;</ =>?@ ABCDE+**ῌ,**mFG9$H()*IJKL7*#MN/K L7*O+#,9PQ >RSE+kmTU#FG90῍1+VWXYZ[
\3 0῍1+VW+#F]^_`]a#bcd#efgQ hij_kl()* mSnopqr#PQst#/u'SvZ[ V WXYZ[, -+wx+S.g
,.,.
y0῍VWz: VHF JHV-,,/T:,/W ABUHF JHF-.+S-*N-+:-*W $%
,.-.
{&$%|+.
- }~ABC
-.+.
XY}~|,. 8 m#C> IJ9QM-+VW
.
-.,.
+ N()*R()*RL()* ABm#9VHFῌUHF +v0῍1 0῍VW +F9WXY/9VW>pq9PR
, RL-3?kl 'S 0῍1>7 ] #
? SVHFῌUHF+vXY>¡¢gQ> £+v¤W9' + !"#{&$%
Table+. Apparatus for radio communication installed in the oversnow vehicle.
¥&¦7§
¨©
ª«#¨©AB«¬
ῌ
j7®¯j7®¯$H°
VHF
JHV-,,.T JRC± F-E +3.../MHz +*W
lῌ.L²³j7®¯
°,./m´Y
UHF
IC-F.,*S ICOM F-E 0*.,1/MHz -/W
+lL²³j7®¯
°,./m´Y
ῌ , Table, Resultes of radio communication.
ῌVHFῌUHF 285
m
- SK !"#$%& '()*+,-&. /01 234567859:;<=>VHFῌUHF?@A.BCD=
EF? m<=G<=
H SKIJK@VHF@A=E =LM<
. !"# SK,3A.NO @PQ '()R@9:;=SK-.
ST*SK/*STUVHFῌUHFBC"SK/+VHFῌUHF.UV W XYSK/-UHFI&F<= VHF.Z/
/ SL [\]^\$%& @PQ '()@_ 9:;
'()*+,`&a=G<* bcde f _ UHFg hK =G<*< ""SL/*ij@PQVHFῌ UHFBC" Eklm@no?pqD=G<* Er sVt$uv=wxyz=
0 [\]^\{SL [\]056'()R@pqD=G<
*SL0*STijVHFE(K@ G|UHF}*,E ~"SL2- XY VHFῌUHF<,@EF
1 [\]^\{SL2, VHFῌUHF<,@lm@'() E <sVtE=G<$k" [\]0)@HQ E kzSL2,)YkEk=
2 [\]^\{$SL2-<[\]^0ῌ_$LdV$
"<G UHFEI& ?@HQVHF@A=Elm@
G<$k"
3 NKYH@HQVHFῌUHF.Z/E =
G<BN@PQ &@/01234569:;<=G<*
VHFῌUHF<,@-UBCD= E ?G<$k"
GBN@HQ ghKVHF&
+* ? [\]08:03.+.*0-῍S-3,0.*3-῍E[\]0
¡¢5£ +20m[\]^0ῌ_¢¤¥¦ +**m @ HQUHF04§/0¨© JRCª: JHP.++S*+Tf +W$Q'()
<$«<G 9:;I&pq"¬E"E> .Z/E
$k" GG<A. [\]0)@HQ,®¯7°±c@
z²³´ ¤¥?@A.E$k =G<µua
-.-. ῒῌ῏῎
UHF
! -"#$%&'() *+,-./0123456785 9:&';68< 3=->=?@4(ABC&'DE FGUHFHI JKL *9: M';6N&'O
. O P Q #
RS 3=TUVWVHFῌUHF6XSM.+,YZ[K\4'() []^_`CKa)VW&# b5'c [] defgh#ijkl mn opqr stcuvkl5wxyX3=z{M'ABC&'O |(
}~&'DE5w3=?@M'() *RSTUVWj+
5X&'O 484 6z{M'DE&yX ABC KM' 5&'6%'O
ῑ ῐ
VW&#.- G6#Qj 3=
y(6¡¢5w£¤K¥j(O |(¦§¨© y.- ª«¬®K¯(O &Q°±²K³´(O
ΐ ῍
µG¶·¸ ,**-:G¹.- ,**+ῌ,**-O º»,/--p.
ῌFG¼Pj'VHFῌUHF 3=+ 287