54 55TELE-audiovision International — The World‘s Leading Digital TV Industry Publication — 09-10/2014 — www.TELE-audiovision.com www.TELE-audiovision.com — 09-10/2014 — TELE-audiovision International — 全球发行量最大的数字电视杂志

• Single and Quad LNBs excellent for receiving weak satellites

• Twin LNB ideal solution for strong satellites and extensive distribution systems

• excellent workmanship• performance equal to other best quality

LNBs on the market

Maxing Electronic Technology

MX LNBs ofTEST REPORT Ku band LNBs

09-10/2014

www.TELE-audiovision.com/14/09/maxing

56 TELE-audiovision International — The World‘s Leading Digital TV Industry Publication — 09-10/2014 — www.TELE-audiovision.com

TEST REPORT Ku band LNBs

MAXING MX-16, MX-KT22C, MX-KQ24CExcellent workmanship give excellent

reception results

Good For Strong and Weak Satellites

We have already pre-sented one LNB of Maxing Electronic Technology – the MB04 universal LNB for Ku Band with an integrated DiS-EqC switch (see TELE-au-diovision 07-08/2014). This time we picked some other LNBs of their huge collection of models, namely the more commonly used versions of Single, Twin and Quad LNBs for Ku Band. Maxing gave them these model names: MX-16, MX-KT22C and MX-KQ24C respectively.

The LNBs we put to our test bench this time looked

from the outset typical for Ku Band LNBs. They were finished off very well. The only small drawback we no-ticed was that their labels were made of paper. So, you can not expect them to survive long when installed outside on a dish. How-ever, do you really care? Once installed, you usually do not pay any more atten-tion to the LNB on your dish. Even if the label is eventu-ally peeled off by rain and wind this will not trigger any problem or esthetic discom-fort. That’s why we do not

should know that it was a low noise (NF=0.2 dB) con-temporary LNB of very good quality. We decided to use the LNB poiting to the AS-TRA satellite on 19.2 East. Although this satellite was very strong in our location, it did not necessarily mean that the test was easier to pass.

In such environment (Toroidal dish and strong sig-nals) you may expect quite some interference from neighboring satellites so ad-ditional to the low noise fig-ure the LNB under test must also offer a low phase noise, high cross polarization isola-

regard this as a serious im-perfection.

What really counts is the performance. We decided to use our Toroidal multi-feed dish with 8 LNBs. For the purpose of this test we replaced one of its LNBs with one by one the Max-ing LNBs. The original LNB served as the reference to which the Maxing MX LNBs were to be compared to. You

tion and high resistance to intermodulation. The most practical way to evaluate all those parameters at once is to compare the LNB un-der test to another one of a different brand. And that’s what we did.

As usually, we compared the LNB power output which is directly related to signal strength and Modulation Error Ratio (MER) which in turn is related to the signal quality. The first two graphs present the signal strength. Evidently, the MX-16 was weaker than our reference, the MX-KT22C was visibly stronger and the MX-KQ24C was more or less equal.

OPINIONEXPERT

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RECOMMENDEDPRODUCT BY

Jacek PawlowskiTest Center

Poland

MAXING MX-16, MX-KT22C, MX-KQ24CKu band LNBs

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58 59TELE-audiovision International — The World‘s Leading Digital TV Industry Publication — 09-10/2014 — www.TELE-audiovision.com www.TELE-audiovision.com — 09-10/2014 — TELE-audiovision International — 全球发行量最大的数字电视杂志

What is worth mentioning, both outputs of the Twin LNB and all four outputs of the Quad LNB were almost iden-tical. So none of the outputs was weaker or stronger than the others with the same LNB.

Then we measured and processed the MER results. And here we had another picture. We may say that the MX-16 matched our ref-erence, the MX-KT22C was somewhat worse and the MX-KQ24C was again almost equal to the reference.

The reason for this is clear: the MX-KT22C has been designed as a high output LNB and due to that its noise performance is not as good as the normal out-put level companions (Single and Quad in this case), whch is due to increased inter-modulation in such high gain LNB. However, this makes this LNB a favorite for re-ceiving strong satellites connected to a distribution system with significant sig-nal loss due to long cables or many switches.

The MX-16 and MX-KQ24C did not have such a strong output signal but performed very well in signal qual-ity measurements. We can recommend them even for difficult reception condi-tions. They they perform as well as the best LNBs on the market.

Finally, we measured cur-rent consumption of all LNBs. Here are the results:

MX-16—72 mAMX-KT22C—104 mAMX-KQ24C—152 mA.The d.c. currents are quite

reasonable and similar to other devices of this kind. They will not cause any problem for any receiver or multiswitch.

● Excellent noise performance of the Single and Quad LNBs: MX-11 and MX-KQ24C

● Very strong output of the Twin LNB: MX-KT22H

● lables made of paper

TELE-audiovision already tested the MB04, a LNB with integrated DiSEqC switchhttp://www.tele-audiovision.com/TELE-audiovision-1407/eng/maxing.pdf