Sirio Antenne SMA 55-550 User manual

BCopyright SIRIO antenne - Technical Data are subjected to change - Printed in ITALY - Rev. 15/06/2006 - Cod. ID369
HI-QUALITY ANTENNAS MADE IN ITALY
MATCHING & BANDWIDTH DIAGRAMSMATCHING & BANDWIDTH DIAGRAMS
TUNING INSTRUCTIONSTUNING INSTRUCTIONS SMA 55-550 SMA 108-550
VHF Mobile Antennas 55...550 MHz or 108...550 MHz Stainless steel whip
SMA 55-550 SMA 108-550

DESCRIPTIONDESCRIPTION
1/4 lmobile antennas covering the frequency range of 55...550 MHz or 108...550 MHz by using
the enclosed cutting diagram. SMA series is made of 17/7 PH stainless steel rod and supplied with
“SL”, “S” mount (from 55 up to 300 MHz) or “N” mount (from 55 up to100 MHz).
SPECIFICATIONSSPECIFICATIONS
TUNING INSTRUCTIONSTUNING INSTRUCTIONS
ID369
Electrical Data
Type : 1/4 l
Frequency Range : SMA 55-550 from 55 to 550 MHz tunable by cutting
: SMA 108-550 from 108 to 550 MHz tunable by cutting
Impedance : 50 W
Radiation : Omnidirectional
Polarization : Linear Vertical
Gain : 0 dB ref. to a l/4 whip
Bandwidth @ SWR £ 2 : see diagram (”SL” mount)
SWR @ res. freq. : see diagram (”SL” mount)
Max Power : 100 Watts
Standard Mount : “SL”, mounting hole Æ19 mm, cable 5m RG 58 (55...550 MHz)
Alternative Mount : “S”, mounting hole Æ19 mm, cable 5m RG 58 ( 55...300 MHz only)
: “N”, mounting hole Æ12.5 mm, cable 4m RG 58 (55..100MHz only)
Mechanical Data
Materials : Stainless Steel 17/7 PH, Nylon, Chromed Brass
Height (approx.) : SMA 55-550 1360 mm
: SMA 108-550 720 mm
Weight (approx.) : 400 gr
NOTE:
!Use the curves just as a guide. For fine-
tuning please use an SWR-Meter.
A
Æ1”-1/2
Æ39 mm
MOUNT INSTALLATIONSMOUNT INSTALLATIONS
"S” Mount"SL" Mount
“SL” MOUNT REMARK: Be careful during installation do not use too much strenght but tighten the
metal ring Aby means of the suitable tool. TIGHTENING TORQUE: 4 Nm ± 10%
PRECAUZIONE PER BASE “SL”: Porre attenzione durante l'installazione. Non serrare con troppa forza ma
avvitare l'anello metallico Autilizzando la chiave adeguata. COPPIA DI SERRAGGIO: 4 Nm ± 10%
Æ1”-3/5
Æ42 mm
"N" Mount
Æ1”-3/5
Æ41 mm
L
108 MHz Start frequency
for SMA 108-550 L=640