Sirio Antenne SKA 47/135 User manual

A
Æ1”-1/2
Æ39 mm
Æ1”-3/5
Æ42 mm
BCopyright SIRIO antenne - Technical Data are subjected to change - Printed in ITALY - Rev. 02/08/2010 - Cod. ID388
HI-QUALITY ANTENNAS MADE IN ITALY
REMARK: Be careful during installation do not use too much strenght but tighten the metal
ring Aby means of the suitable tool. TIGHTENING TORQUE: 3 ¸4 Nm
ATTENZIONE: Porre attenzione durante l'installazione. Non serrare con troppa forza ma avvitare
l'anello metallico Autilizzando la chiave adeguata. COPPIA DI SERRAGGIO: 3 ¸4 Nm
"S” Mount
"SL" Mount
SKA 47/135
Dual band VHF Mobile Antenna 47...63 & 135...175 MHz
SKA 47/135
MOUNT INSTALLATIONSMOUNT INSTALLATIONS
MAG 125 S Black:
Frequency Range: from DC to 500 MHz
Overall Size: Ø 127 mm
Materials: Chromed Brass, Nylon, Rubber
Cable: 3.6 m RG 58 / PL 259 R male
Antenna connection: UHF-female
P/N 2502602.02 MAG 125 S Black
ALTERNATIVE MOUNT TYPEALTERNATIVE MOUNT TYPE

DESCRIPTIONDESCRIPTION
ID388
HI-QUALITY ANTENNAS MADE IN ITALY
Dual band VHF vehicular antenna working on 47...63 MHz and 135...175 MHz by means of the
attached cutting diagram. Its bottom coil allows very good impedance adjustment and its conic
stainless steel whip is very flexible. All the metallic components are made of chromed brass or
stainless steel for the best robustness and it can be supplied with "S" or "SL" professional mounts.
It’s available with magnet mount MAG 125 for temporary installation on th vehicle.
SPECIFICATIONSSPECIFICATIONS
Electrical Data
Type : 1/4 lBase Loaded for 47...63 MHz band
: 5/8 lfor 135...175 MHz band
Frequency Range : from 47 to 63 MHz & from 135 to 175 MHz tunable by cutting
Impedance : 50 W
Radiation : Omnidirectional
Polarization : Linear Vertical
Gain : 0 dB ref. to a l/4 whip for 47...63 MHz band
: 2 dB ref. to a l/4 whip for 135...175 MHz band
Bandwidth @ SWR £1.5 : ³2.5 MHz @ 47 MHz
: ³3 MHz @ 135 MHz
SWR @ res. freq. : £1.4 for 47...63 MHz band
: £1.2 for 135...175 MHz band
Max Power : 100 Watts
Standard Mount : “S”, mounting hole Æ19 mm, cable 5m RG 58
Alternative Mount : “SL”, mounting hole Æ19 mm, cable 5m RG 58
Mechanical Data
Materials : Stainless Steel, Nylon,Chromed Brass
Height (approx.) : 1505 mm
Weight (approx.) : 280 gr
TUNING INSTRUCTIONSTUNING INSTRUCTIONS
L
NOTE:
!Use the curves just as a guide. For fine-tuning please use an SWR-Meter.
TYPICAL S.W.R. RESPONSE
Model: SKA 47/135
S.W.R.
1.0
1.2
1.8
1.4
2.2
1.6
2.0
2.4
2.6
2.8
3.0
133 135 137
f.(MHz)
File: F-14-030
TYPICAL S.W.R. RESPONSE
Model: SKA 47/135
S.W.R.
1.0
1.2
1.8
1.4
2.2
1.6
2.0
2.4
2.6
2.8
3.0
45.5 47 48.5
f.(MHz)
File: F-14-030