Tag Archives: rf

Teardown: Failed MovNow W79 (Counterfeit Xiaomi) Fitness Tracker

Someone had commented on my review of the MovNow W79 about that to do about his fitness tracker which suddenly stopped working. An interesting coincidence? Mine also stopped working for some unknown reason. I tried my best to revive it … Continue reading

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Freeview (Quick) Update: 7flix now with MPEG-1 audio as well!

Due to the poor user response, it seems that Channel 7 has, as I had predicted it would, partially done a backflip with 7flix’s audio. That being said, if they were really nice, they should probably split out another 128kbit/s … Continue reading

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Freeview Update: Analysis of Network TEN’s Multiplex after launch of TEN HD

Today, Wednesday 2nd March, marks the launch of TEN HD’s service, promised to us at 3pm AEDST. They have a press release and a list of FAQs which includes a free call helpline (1800 783 117) for more information. Sadly, … Continue reading

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Freeview Update: Channel 7’s Multiplex after the launch of 7flix

Today marks the official launch of 7flix, Channel 7’s new movie-oriented channel. Since the channel is now running actual content, the configuration of the encoders should have reached their “production ready” state, so lets see where the chips have landed. … Continue reading

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Quick Review, Teardown: Uniden DECT 1015 Cordless Phone

Since I’ve been playing around recently with running my own Asterisk server at home and having many ATAs to create internal extensions to create virtual POTS lines to play with modems and other telephony devices, I desperately needed some nice … Continue reading

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Telstra’s “We’re sorry” day Experiment: 4G LTE Speed vs Time of Day

Rather embarrassingly, on February 9th, Telstra suffered a significant mobile outage across the country owing to human error in handling a hardware failure in a set of redundant mobile nodes, resulting in the shut down of too many nodes and … Continue reading

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Freeview Update: 7flix launches 28th February

Channel 7 had been teasing us with a New Channel Coming Soon since some-time in December last year, and speculation went wild as to what might happen. Many ideas were floated by various online forum members, no least, in Austech … Continue reading

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Tech Flashback: Gold Apollo AL-924-T Synthesized POCSAG Pagers

Just recently, I posted about my Motorola Advisor pagers, which got me interested in acquiring a more modern style of pager – namely one with a frequency synthesizer so that I don’t have to worry about ordering custom cut crystals … Continue reading

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Tech Flashback: Motorola Advisor POCSAG 512/1200bps Pager

When I heard last week that the Motorola branding was going to be shelved and replaced by “Moto by Lenovo”, like many others online, I felt a tinge of sadness as if another great tech brand had fallen by the … Continue reading

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Freeview Updates: TVS off the air, Ch 7 “New Channel” Coming Soon

As I haven’t been watching TV very closely as of late due to my excessively busy schedule, I hadn’t noticed that two relatively major things have happened in the Sydney Freeview space. On 20th December 2015, our community TV station … Continue reading

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Teardown: A Failed Efergy Elite (Classic) 1.0 Energy Monitor

As part of a push to drive the home’s electricity consumption down and better understand how energy was being utilized, I installed a clamp-style wireless energy monitor from Efergy in the house. Operating over 433Mhz, the transmissions were also useful … Continue reading

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Review, Teardown: Belkin WeMo Switch (F7C027au)

All of this home automation stuff is admittedly a little addictive – being the curious type, I’ve always wanted to see how far these things can go. As a result, in addition to buying the Belkin WeMo globes at a … Continue reading

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Review: Belkin WeMo Smart LED Globe & Test w/OSRAM LIGHTIFY

When it comes to Zigbee-enabled smart lighting devices in Australia, the one predominant vendor at this moment is Belkin with their WeMo system. While the WeMo system itself has its share of mixed feedback, it was reported by Belkin that … Continue reading

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Analysis: Freeview Sydney – Launch of 9Life, DSM-CC, etc.

As per the announcements, at 6am on 26th November 2015, the 9Life channel was officially launched and the Channel 9 Freeview offerings have undergone a reshuffle as a result. Anticipating this move for a week now, I had my trained … Continue reading

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Review: OSRAM LIGHTIFY Smart Connected Lighting System

As we rapidly move towards an IP-connected society, with buzzwords such as “internet-of-things” and “sensor networks”, suddenly the concept of home automation has become cool again. No, we’re not talking about the old fashioned expensive, temperamental, slow and clunky power-line … Continue reading

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Sony AN-LP1 Active Loop Antenna: What about putting it outside?

In the previous part, I was looking at improving the performance of the Sony AN-LP1. With the modifications not really achieving the desired effect, I decided to do what most sensible people might do – put the antenna outside, so … Continue reading

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Teardown, Modification: Sony AN-LP1 Active Loop Antenna

When an engineer isn’t happy with something, they often try to “fix” it. Sometimes this ends up in hilarious failure where the said object becomes more broken than when they started. Sometimes it ends up in success, but most of … Continue reading

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Review: Sony AN-LP1 Indoor Shortwave Active Loop Antenna

One of my plans after I finish my PhD is to take some time off and travel the world. Being an engineer at heart, I don’t just take “regular” holidays – I need to bring my hobbies and experiments along. … Continue reading

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Project Adverpising: A Wi-Fi Beacon with Raspberry Pi

Privacy is a major issue, especially as we continue to gear-up and carry various wireless devices which emit signals which can be used to track our movements, be it just a smartphone with Wi-Fi turned on, probing for access points … Continue reading

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Salvage: HTS541680J9SA00 80Gb HDD, Duracell AAA, Optus Cable Card & Alcatel-Lucent Home Cell

I’ve been occasionally accused of being a hoarder, which I suppose is true. The result of this is that I do end up collecting interesting tidbits, mostly broken things, which I can take apart and explore … or just admire … Continue reading

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Visited: Comms Connect 2015 Sydney (3 – 4 June)

It’s been a busy week full of events. Earlier this week saw Comms Connect land in Sydney, held at Sydney Showground at Olympic Park. Comms Connect is a trade expo which is targeted at critical communication users and those involved … Continue reading

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Teardown, Experiment: ST Gold (MTI) AP8-T2J & BAS 11300Mhz LNBs

An integral part of any satellite receiving system is the low-noise block downconverter (LNB), sometimes incorrectly called a “low-noise block”. As satellites use high frequencies of ~3-5Ghz for C-band and ~10-13Ghz for Ku-band transmissions and are very limited in transmission, … Continue reading

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Satellite Hunting: AsiaSat 4 (122 E), Thaicom 4 (119 E) & AsiaSat 3S (118 E)

The hunt continues with this fourth installment, where we take a look at a few satellites towards the west. AsiaSat 4 at 122 degrees East AsiaSat 4 was launched April 2003, on a high power variant of the Boeing BSS-601 … Continue reading

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Satellite Hunting: Intelsat 8 (169 E), Intelsat 5 (157 E), Measat 2 (148 E) & Apstar 9A (142 E)

Here comes a third installment of satellite hunting, and this time, we’re looking for four relatively quiet satellites which we don’t know of any steady Ku band signals beamed to Sydney. Will I be successful? You’ll have to read on … Continue reading

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Satellite Hunting: Intelsat 18 (180 degrees E) & Eutelsat 172A (172 degrees E)

Let me start with a Happy Easter to everyone! Having a few days off for a long weekend really lets me get back to what I like doing – which includes writing blogs. This post continues in the series of … Continue reading

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Experiment: Satellite Hunting for Optus 10 (164 degrees East)

By now, I think it’s clear that I’ve got a bit of an interest in electronics and most things RF related. As a result, I spend a bit of time trying to grab signals of various sorts, be it regular … Continue reading

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Teardown: Xiamen Seebest 3-way CATV Directional Coupler/Splitter

Back in 2013, when I was first building my first trial DVB-T TV tuner server, I had decided to cheap out and buy a two port Xiamen Seebest amplifier, max out the gain at 20dB and have that feed a … Continue reading

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