On first impressions the Mediastar HDX9100 looks to be quite a nice fully featured satellite receiver that has had some time spent on the design and development of the receiver functions, something that isn’t to common these days as receiver manufactures and reseller are driven to get the new models out selling ASAP with out some of the testing you might expect.

The first thing I noticed about the Mediastar receiver is that the channel name is displayed on the front panel of receiver a feature I haven’t seen since the Nokia 9500’s of the late 90’s  a nice touch I thought. First I decided to connect the Mediastar to my terrestrial antenna and perform a automatic scan to see what the tuner would load knowing that I live in an area that has average reception as best. To my disappointment the rec

eiver did load some channels but it didn’t load all the digital channel that I know is available in my area by way of my standard $100 set top box from Aldi.  The Mediastar’s EPG was quite impressive though the receiver allows for up to 14 days ahead in the programing and will also allow you to bring up a description of the show you have selected even if it is a few days in advance, I also noted that you can

my setup

record program by pressing the yellow button the remote in blocks instead of setting a start and finish time which I alway seem to be out by a few minutes cutting off the end my documentaries .

I connected up the Mediastar to my motorised 2.3m dish using a Super jack V box III positioner (disequ 1.2) and after searching through the detailed list of satellite available I selected the short list for my motorised dish to be able to receive. I then manually moved my dish to the most Western limit using the V box front panel controls. The Mediastar asks for a transponder from each satellite which is easily selected using the left the right buttons on the remote control, there are then three options for moving the dish, continuous, time (in seconds 1-5) and pulses (1-5), I decided to use the continuous setting which prompted the dish to move to the East, the dish then stopped on my first satellite Asiasat 2, I thought that dish had stopped by coincidence on Asiasat 2 but further investigation found that the receiver measures the transponder you have selected for each satellite and stops the dish when the receiver measures a carrier on that particular transponder (provided you pick a transponder unique to each satellite). I have never seen this feature on a satellite receiver before and this made setting up by C band system extremely easy if only every receiver I had ever owned have this feature I would have saved many frustrating hours searching the skys for satellites.

Once I have my C band setup complete I wanted to load some MPEG 4 or DVB-s2 channels to see just good the picture quality was, I decided to start with Asiasat 3 as it has Fashion TV HD and a few Indian “HD” services.  The receiver loaded the channels with ease and they looked fantastic on my LG 42″ Plasma not that were of any particular interest to me but it was interesting to see these services running.

The last thing I thought I would try was the USB port on the back to record from the terrestrial and satellite, I had a Western Digital 320G HD from Officeworks handy so I plugged it in after formatting it to FAT 32 which is the only file system the Mediastar will run with unfortunately. The receiver sensed the presence of the hard drive and asked to format the drive which I said yes to. Recording was simple you could record program blocks from the EPG or setup timers, time-shift programs or simply record continuously. To play the recording on my computer back I have to search around on the Internet to find a player as it is recorded all programs in MPEG 4 compression I downloaded something called a GOM player and downloaded the necessary files, all of which was straight forward. The quality of the programming being played back was amazing I couldn’t believe the resolution very impressive but it did chew thought space on the drive every 30minutes of recording was around 1Gig of spare on the drive you wouldn’t want to record for a few days with out a massive drive.

I would conclude the Mediastar receiver to be quite good receiver with a few very interesting features I hadn’t seen in a while and a few new completely new ones. The terrestrial tuner could be improved on and the unit runs quite hot but I guess with so much packed into the receiver that is to be expected. The MPEG 4 and DVB-S2 channels looked great and I’m sure this is the way of the future for satellite transmission, EPG and recording work easily and didn’t require 5 university degrees in computer technology to operate. The price is quite expensive when you compare it to other standard DVB receivers on the market  but you can notice the little extras the receiver offers the user and when they say the receiver has a feature it does and is easily operated by a typical user.

Below I have put the receiver spec’s that I found on the web,

Video Output Formats: HDMI, YPbPr, S-Video, Composite Video, and SPDIF Optical.

External connections include: UBS 2.0, Ethernet IP, HTTP and FTP which can be set.

Other notable features are: 14 day EPG linked to PVR timer settings, Blind Scan, and Ethernet networking, and video mosaic function.

Recording Features: The unit can record  2 channels simultaneously, and viewing is possible from the HDD or “off air” at the same time.

Size: The receiver has a small footprint 330 x 200mm

Card Types Compatable : It is equipped with 2 smartcard slots for NDS and Irdeto as well as 2 common interface sockets for CI modules.

I bought my receiver from Av-Comm  located in Sydney via phone they were quite helpful and shipped the receiver Express Post arriving at my home two days later, I would highly recomend them to anyone wishing to buy this receiver as they seemed to have a general understanding of the receiver and were just a sales agents.

DigiAir Pro

Hot on the heels of last month’s review of Emitor’s G2 Microlook, is their offering for terrestrial TV installers, the Digiair Pro. This is an affordable, hand held meter capable of spectrum display, BER, MER and SNR measurements.

The Av–Comm version comes with Australian and New Zealand analogue and digital channel plans loaded into the memory, making it a simple matter to check levels on any service on an allocated channel.

The spectrum display covers 45 to 862 MHz, and signals can easily be observed on the 60mm LCD display. Like all devices with an LCD display, readability in bright sunlight is somewhat diminished.

There are several different menu screens that are used to display terrestrial signals. Analogue signal levels are displayed in bar graph format showing the channel frequency and level in dBuV, whilst digital signals are displayed showing SNR, pre and post corrected BER, uncorrected errors, MER and Constellation Display. There is also an indicator to show “locked” signal

Is also an indicator to show “locked” condition. From this menu, users simply press the OK button to display MER and Constellation Display. Yet another menu allows the display of six channels simultaneously, in either analogue or digital modes, very handy for capital city installations.

The unit is capable of powering a masthead amplifier, and also has an inbuilt 20db attenuator. The unit is powered by 8 x AA 1200mAh NiMh batteries, which can be removed for charging or charged in situ with the optional 12V 1 Amp regulated power supply. Battery endurance is 2 hours. A 12 V vehicle charging lead is also supplied along with a bright red rubberized protective shell and carry strap.

The DigiAir Pro (Cat # Q 1201) is available from several outlets in Australia.

Av-Comm sells the product on-line for $598 including GST. The optional regulated charger is available for an additional $18.

Our DigiAir Pro

KLSV-1

South Korea’s indigenous KSLV-1 launcher lifted off from the Naro Space Centre on August 25, but failed to launch a scientific observation satellite into low Earth orbit.

A previous launch attempt several days earlier was halted when “abnormal data’ was observed during the automated launch sequence.

The launch had been postponed on five previous occasions: — the end of 2007, end of 2008, the second quarter of 2009 and July 30 and August 11, due to Russia’s refusal to transfer technology or problems in acquiring components.

The KSLV-1 launcher is a mix of Russian and local manufacture: Russia built the liquid fuelled first stage, whilst the second stage has been designed and manufactured in Korea.

Called KSLV-1 (Korea Space Launch Vehicle –1) the 33 metre tall launcher is the pride of the Korean space industry, arousing huge national interest and support.

The Russian made Angara first stage, can generate 170 tonnes of thrust, sufficient to propel the launcher to the edge of space, whilst the South Korean, Naro 1 second stage will generate 8 tonnes of thrust, allowing the launch vehicle to attain low earth orbit.

South Korea has developed a wide range of commercial satellites, including the multi-purpose satellites Arirang or the Mugunghwa. All of these satellites have been launched by American or Russian rockets. This was the first time a South Korea-developed rocket had been used to launch a satellite.

A South Korean official stated that ground stations had failed to contact the satellite, and that it was either in an unknown orbit, or loss

The “missing” STS2 100 kg satellite is a  non commercial scientific payload, fitted with cutting-edge meteorological research equipment using electronic frequencies to conduct tests on the earth’s atmosphere and gauge humidity levels in clouds and water vapor in the atmosphere.

South Korean and Russian scientists were reportedly studying launch data to try and determine the cause of the failure.

The payload was the first Korean satellite to carry laser reflecting mirrors, to accurately measure the distance between itself and the Earth. The equipment would have been used to forecast seismic activities.

Before the launch, officials knew the risk of failure was high. The Director of the Naro Space Centre, Min Kyung Ju is quoted as saying “ Initially the rocket will be moving relatively slowly making it hard to maintain stability as the main engine tries to push up the 140 tonnes  launch vehicle and satellite payload.

If there is a sudden gust of wind or any other slight problem in the stabilization mechanism, the rocket can tip over and be lost.”

Many rockets have been lost  during the first critical stages of ascent, including the US made Vanguard and Atlas, Europe’s Ariane 5, and several other launch vehicles from China and Russia were all lost within a minute of takeoff, according to the South Korean Technology Minister Lee Sang Mok.

Lee also said that the fairings that secure the satellite to the second stage rocket, were made in South Korea and had never been tested in flight.

The launcher cost US$415 million to develop, whilst the satellite cost 13.6 billion Won to build.

South Korean officials confirmed on August 27 that the second stage separation had been successful, but that the location of the satellite was not known. At that time the spacecraft was 342 Km above waters near Australia, instead of the 306 Km predicted trajectory.

The Naro Space Centre was specially constructed for this mission and is located at the southern tip of the Korean peninsula, about 300Km from Seoul.

A more detailed article on the Naro Space Centre appeared in May 2008 edition of Pacific Satellite News.

Here’s what we found………..

The first sentence of the User Manual says it all..”This unit is made for exact alignment of satellite dishes” and that is exactly what it delivers. Our experience with Emitor products goes back ten years and we previously reviewed the Satlook Micro several years ago.

Since that time Emitor have striven to improve the product and the G2 represents the pinnacle of that development according to John Lindberg leader of the development team. Basically, this is an instrument that is faster and more accurate that its predecessors. It can search the spectrum for satellite signals, identify transponder frequencies, check the transponder NIT table and display the channel names being broadcast.

The unit is built into a robust black anodised aluminium case, and features a 75mm backlit LCD display and is powered by a 12 volt 1.8 Ah NiMh battery that will operate the unit for about 2 hours. It has 100 memory positions where the spectrum display of individual satellites can be stored for future identification.

A tone generator assists in initial location of a satellite, and the spectrum analyser with zoom feature ensures all dish parameters can be optimised.

The unit will accurately display the entire IF spectrum, transponder frequency, Symbol Rate, FEC,

The G2 spectrum display clearly allows the operator to identify individual transponders according to

frequency. The search function causes the unit to perform a blind search with amazing accuracy. Once locked to a signal, the unit displays frequency, C/N, BER, SR, FEC AFC constellation, and MER (not shown).

Easterly satellites such as Inteslat 8 will be affected around 9.00 AEST for periods of up to 15 minutes.

Westerly satellites such as Thaicom 5 will be affected at around 3pm AEST.

To calculate the precise outage time for your location, go the the ionispheric prediction service  on line calculator at:

http://www.ips.gov.au/Satellite/3/1

Satellite systems using auto trackers should have the tracker disabled during periods of solar outage to ensure the dish does not lock to the Sun !!

The rack is capable of accepting 10 active filter modules that can be individually programmed. In this way a simple and cost effective head-end can be assembeldbled with outstanding performance. The main advantage of the use of double SAW filters is the amazing 70dB selectivity figure, which means that unwanted adjacent channels can be eliminated.

Even without the optional ALCAD launch amplifier, the maximum output level is a very respectable 78dB. This could be fed into an existing launch amplifier. Frequency range of the system is 174-238MHz and 470-862MHz and the system does require an input level of 50-70dBuV for digital signals and 60-80dBuV for analogue signals. At an average cost of $200 per channel, this system will suit many installations where full COFDM processing is not required. Contact  Electrocraft for full details. (02 9438 3266)

Italian manufacturer Promax recently released the DT 504 quadruple input DVB-T modulator.

This unit allows 4 individual AV sources to be combined into one DVB-T channel (4 virtual channels).

The four onboard MPEG2 encoders mean that multiple satellite TV programs could be combined with digital terrestrial channels, allocated their own UHF channel, and displayed on a DVB-T receiver.

As many hotels are now replacing their standard analogue TV sets with plasma or LCD displays having an integral DVB-T tuner, this allows  other services such as satellite or movie channels to be integrated into the existing MATV system.

The unit is mounted into a standard Prolink rack frame and operates from a +12/+5 volt power supply.

The unit is available from Electrocraft for around $2500 per channel. As a typical hotel has several hundred rooms,

and considering the unit allows the introduction of 4 digital channels, this price point is affordable for larger organizations.

Full details are available from Electrocraft on

02 9438 3266.

Well known satellite pioneering company Opac, located at Ingleside on the outskirts of Sydney, has been involved in the supply of satellite and terrestrial receivers for some years, and is responsible for the  Mediastar brand.

The company has just released a new model combination satellite/terrestrial PVR HD receiver capable of using an external USB hard drive, aimed at the satellite enthusiast.

Labelled  the Mediastar HDX9100 PVR, the unit has a dual input satellite tuner capable of receiving HD signals (DVB-S2) and twin CI slots for smartcard use. Most importantly for  terrestrial viewers, the unit is Freeview compatible.

There are various output configurations available from the unit: HDMI,

YPbPr, S-Video, Composite Video, and SPDIF Optical. External connections include UBS 2.0, Ethernet IP, HTTP and FTP which can be set.

Other notable features are: 14 day EPG linked to PVR timer settings, Blind Scan, and Ethernet networking, and video mosaic function.

 The unit can record  2 channels simultaneously, and viewing is possible from the HDD or “off air” at the same time. The small footprint 330 x 200mm makes it an unobtrusive addition to any installation.

This receiver is likely to be a huge success with owners of large screen HD TV sets, particularly those who are watching subscription TV services and can take advantage of the HD capability.

It is equipped with 2 smartcard slots for NDS and Irdeto as well as 2 common interface sockets for PCICMA modules.

Available from Opac ( Tel: 02  9618 5777), Av-Comm and other major satellite resellers.

USB hard drives to suit are available from many sources.

RRP $599