1. No category

R
Iskra Sistemi, d.d.
Stegne 21
SI - 1000 Ljubljana
Slovenija
YAGI Antenna - UHF
YAGI antena - UHF
PE Stikala
Ljubljanska cesta 24a
SI - 4000 Kranj
Slovenija
Tel./phone: +386 (0)1 500 3411
Fax:
+386 (0)1 500 3379
Mob.:
+386 (0)40 754 414
Internet: www.iskrasistemi.si
DTX - 48 FL (LTE CUT)
The antenna is especially designed for the digital terrestrial signal's DVB-T / HDTV reception.
Antena je posebej razvita, za sprejem digitalnih zemeljskih signalov DVB-T / HDTV.
Covers frequency range 470 - 790 MHz (Ch. 21-60).
Pokriva frekvenèni pas 470 - 790 MHz (kanal 21-60).
DTX - 48 FL : antenna with LTE HQ BASIC filter
DTX - 48 FL+ : antenna with LTE HQ PLUS filter
Built-in LTE 800 CUT filter.
Vgrajen LTE 800 sesalni filter.
( LTE HQ PLUS filter: + cutting TETRA 400 + GSM 900 freq. )
Antenna carrier 18x18 mm. Impedance 75 Ohm.
Nosilec antene 18x18 mm. Impedanca 75 Ohm.
Can be used for both horizontal or vertical
polarization.
Primerna za horizontalno ali vertikalno
polarizacijo.
Iskra LTE
HQ PLUS or
HQ BASIC
CUT filter
Reliable and robust design for optimum
performance and long life time.
Zanesljiv in robusten dizajn za optimalno
delovanje in dolgo življenjsko dobo.
Channels No.of
Kanali elements
Število
UHF
elementov
Type
Tip
DTX-48 FL
48
21 - 60
Gain
Dobitek
F/B ratio Beam width Antenna Connection
lenght
Razmerje Širina glav.
Prikljuèek
napr.-naz.
lista
Dolžina
pcs.
kos
antene
11 - 16 dB(i) > 29 dB
H 54-26°
111cm
emergency
services
TETRA
400
Channels / Kanali
21
26
35
43
52
10
“F”
60
wireless
internet
LTE 800
(4G)
69
Packing
Pakiranje
cm / m3
cm / m3
117x37x29 / 0,126
GSM 900
20
20
15
15
Gain / Dobitek [ dB i ]
10
10
Iskra LTE HQ BASIC filter
5
5
0
0
Iskra LTE HQ PLUS filter
-5
-5
-10
-10
DVB - T UHF SPECTRUM
-15
-20
-15
-20
-25
-30
370
-25
-30
440
510
580
650
Frequency / Frekvenca
720
790
[ MHz ]
Iskra LTE HQ PLUS FILTER cutting : TETRA 400 + LTE 800 (4G) & GSM 900 freq.
860
920
960
R
Iskra Sistemi, d.d.
Stegne 21
SI - 1000 Ljubljana
Slovenija
YAGI Antenna - UHF
YAGI antena - UHF
PE Stikala
Ljubljanska cesta 24a
SI - 4000 Kranj
Slovenija
Tel./phone: +386 (0)1 500 3411
Fax:
+386 (0)1 500 3379
Mob.:
+386 (0)40 754 414
Internet: www.iskrasistemi.si
DTX - 48 FCL (LTE CUT)
The antenna is especially designed for the digital terrestrial signal's DVB-T / HDTV reception.
Antena je posebej razvita, za sprejem digitalnih zemeljskih signalov DVB-T / HDTV.
Covers frequency range 470 - 790 MHz (Ch. 21-60).
Pokriva frekvenèni pas 470 - 790 MHz (kanal 21-60).
DTX-48 FCL : antenna with LTE HQ BASIC filter
DTX-48 FCL+ : antenna with LTE HQ PLUS filter
Built-in LTE 800 CUT filter.
Vgrajen LTE 800 sesalni filter.
( LTE HQ PLUS filter: + cutting TETRA 400 + GSM 900 freq. )
Antenna carrier 18x18 mm. Impedance 75 Ohm.
Nosilec antene 18x18 mm. Impedanca 75 Ohm.
Can be used for both horizontal or vertical
polarization.
Primerna za horizontalno ali vertikalno
polarizacijo.
Iskra LTE
HQ PLUS or
HQ BASIC
CUT filter
Reliable and robust design for optimum
performance and long life time.
Zanesljiv in robusten dizajn za optimalno
delovanje in dolgo življenjsko dobo.
Channels No.of
Kanali elements
Število
UHF
elementov
Type
Tip
DTX-48 FCL
48
21 - 60
Gain
Dobitek
F/B ratio Beam width Antenna Connection
lenght
Razmerje Širina glav.
Prikljuèek
napr.-naz.
lista
Dolžina
pcs.
kos
antene
11 - 16 dB(i) > 29 dB
H 54 - 26°
111 cm
emergency
services
TETRA
400
Channels / Kanali
21
26
35
43
52
10
“F”
60
wireless
internet
LTE 800
(4G)
69
Packing
Pakiranje
cm / m3
cm / m3
116x41x40 / 0,19
GSM 900
20
20
15
15
Gain / Dobitek [ dB i ]
10
10
Iskra LTE HQ BASIC filter
5
5
0
0
Iskra LTE HQ PLUS filter
-5
-5
-10
-10
DVB - T UHF SPECTRUM
-15
-20
-15
-20
-25
-30
370
-25
-30
440
510
580
650
Frequency / Frekvenca
720
790
[ MHz ]
Iskra LTE HQ PLUS FILTER cutting : TETRA 400 + LTE 800 (4G) & GSM 900 freq.
860
920
960
The importance and usefulness of LTE, TETRA & GSM
notch / cut filters in Iskra’s YAGI and LOG antennas
4 / 2013
Real life situation :

Klagenfurt, Austria
Sources of interferences:
 TETRA
Emergency Services
The EU Offices has chosen TETRA as a
communications system for emergency
services including police, fire and
ambulance. Within Europe and the UK,
these services will operate in the 380 ~
400 MHz band for public safety users.
 LTE 800 (4 G):
Long term evolution.
4. Generation of mobile tech. High speed
wireless internet, 790 ~ 862 MHz band.
 GSM 900 :
Downlink frequencies
(925 ~ 960 MHz – ext. band) are strong
and very close to TV channels.
 For undisturbed reception of TV signals,
filters need to cut all mentioned
frequencies!
Band
Measured
Signal Levels
( dBV )
Amplified signal levels ( dBV )
Baluns and amplifiers
With LTE / TETRA / GSM
notch filters (Iskra)
Balun / Amplifier
Without notch filters
( Es. AM 8000 Engel )
1
TETRA 400
85
79
! 103 !
2
UHF 1
45
61
59
3
UHF 2
68
84
82
4
LTE 800 / GSM 900
104
99
! 120 !
Important ! Iskra’s LOG and YAGI antennas have notch filters for TETRA 400, LTE 800 and GSM 900 frequencies.
Iskra YAGI balun with LTE,
TETRA and GSM notch filters
Iskra LTE / TETRA / GSM
CUT filter in LOG antennas
Interferences on digital TV
(DVB-T) signal = freezing
Interferences are consequence of non cutting strong TETRA, LTE and GSM signals: more than 100 dBV in antenna.