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TELE-audiovision.com
—
01-02/2013 —
TELE-audiovision International —
全球发行量最大的数字电视杂志
Transponder
Modulation and SR
10762 HL
DVB-S 27500
10845 HL
DVB-S 27500
10928 HL
DVB-S2 30000
10972 VL
DVB-S 27500
11010 VL
DVB-S 27500
11045 HL
DVB-S 10555
11054 HL
DVB-S 2894
11131 VL
DVB-S 14815
11177 VL
DVB-S 27500
11220 HL
DVB-S 30000
11231 VL
DVB-S 30000
11283 VL
DVB-S 27500
11324 VL
DVB-S 30000
11345 HL
DVB-S 27500
11366 VL
DVB-S 30000
11386 HL
DVB-S 30000
11470 HL
DVB-S 30000
11470 VL
DVB-S 29950
11512 HL
DVB-S2 30000
11512 VL
DVB-S 29950
11553 HL
DVB-S 30000
11595 HL
DVB-S2 30000
11678 HL
DVB-S2 30000
12508 VH
DVB-S 2532
12576 VH
DVB-S 5925
12593 VH
DVB-S 2500
12596 VH
DVB-S 2848
12600 VH
DVB-S 2500
12605 HH
DVB-S 27500
12621 VH
DVB-S 3364
12633 VH
DVB-S 4883
12640 VH
DVB-S 6510
12656 VH
DVB-S 4883
12676 HH
DVB-S 2800
12733 HH
DVB-S 5700
12736 VH
DVB-S 3703
Except for two weak transponders with low symbol rate where JTU41 performed slightly worse than the reference, it had no problem in
matching or even exceeding our reference for all remaining transponders. The difference between the outputs of the same twin device
was rather small for the majority of the test transponders.
MER measurement results shown in the second graph are more balanced between the reference LNB and the devices under test.
output power. Th Skytrack
JTU41 had evidently a
stronger signal than our
reference LNB. Practically
for every transponder, both
Jiuzhou samples delivered
higher output power by
about 5 dB on average. This
is a lot. It means that we can
use long cables or high loss
switches and still enjoy a
strong enough signal at the
IF input of our receiver.
Our general conclusion is:
if you do not need to hunt for
very weak transponders and
signals with very low symbol
rate, the Skytrack Twin LNB
JTU41 will perform as perfect
as many 0.2 dB devices of
other manufacturers. It is a
solidly designed LNB giving a
very strong signal level suit-
ed even for very demanding
installations with long cables
and multiswitches.
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