Category Archives: Radio

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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Radio: Monitoring the 2015 Sydney to Hobart Yacht Race on HF Radio

The Sydney to Hobart Yacht Race is an annual event, starting on Boxing Day (26th December), racing a distance of around 1170km from Sydney, NSW to Hobart, TAS, Australia. This race is considered one of the most difficult yacht races … 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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Review, Teardown: Unbranded “Generic” vs WiNRADiO WR-LWA-0130 Longwire Adapters

Anyone who wants to listen to shortwave radio, or monitor high frequency transmissions, would have met the dilemma of trying to get a decently performing antenna. As it stands, most smaller radios with inbuilt telescopic antennas rarely reach more than … Continue reading

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QSL Cards: HFCC-ASBU B15 Conference (Radio Vaticana & KTWR)

Twice every year, the High Frequency Coordination Conference (HFCC) is held to decide on frequency allocations for HF frequency users (i.e. shortwave broadcasters, utility stations, etc) for half of the year (i.e. schedule A or B, sometimes referred to as … 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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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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Project: Scanning Sydney’s DAB+ & FM Broadcasts

While on holiday in Hong Kong, I did some scanning of broadcast services over there and SydneyCityTV tipped me off that there were indeed slideshow services on DAB+ here in Sydney as well. It’s funny how we “get used to” … 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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Trip to HK & CN 2014 – Part 5: RTL-SDR, More Radio, AIS & Night Photos

It’s been a while since the trip, but I’ve been just way too busy lately to post anything more about the experiments and photos I’ve taken during my trip. The trip continues, with this part focusing mostly on more radio … Continue reading

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RoadTest: Tektronix RSA306 USB 3.0 Real-Time Spectrum Analyzer

Thanks to element14 and Tektronix, I was lucky enough to be a RoadTester of the Tektronix RSA306 USB 3.0 Real-Time Spectrum Analyzer, along with a Lenovo Thinkpad Edge E431 Laptop. This product is very unique, and interesting, as it offers … Continue reading

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Project: Extracting & Geographically Plotting DTRS Site Information

As a radio enthusiast, and highly observant public transport user, I’ve made many notes about the deployment of the new Digital Train Radio System (DTRS) sites. This new system is based upon GSM-R in the 1800Mhz band, and is intended … Continue reading

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JJC/9VF Kyodo News Radio Fax (August 2014)

Wenlock commented on my initial post about JJC/9VF Kyodo on 25th July claiming that it appears Kyodo is now QRT. Knowing that radiofax services are dwindling, due to high cost of maintenance, problems sourcing parts for repair and mariners having … Continue reading

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Random Post: Railcorp GSM-R Rollout, Opal Stuff, and other observations

It’s been another busy week, but this time around, there hasn’t been that much “random” action to note. Part of the reason is the fact that I’ve been spending increasing amounts of time inside the microbiology lab where I’m doing … Continue reading

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Teardown, Recordings: 1 by One Wireless Door Chime R/X QH-0031 (Quhwa QH-09D)

This post will probably make me seem like a crazy nutter, but oh well. I cannot deny the fact that I can do some very strange things from time to time. I needed a wireless doorbell to alert me to … Continue reading

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RTL-SDR: 433.92Mhz ASK/OOK Decoding of Various Devices with rtl_433

Since I got into the rtl-sdr craze, one thing I’ve always been interested in doing is decoding various sensors and remote controls which operate using RF. In order to do this, you must first acquire the signal, understand its modulation … Continue reading

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More RTL2832U Tuners: Full-Size FC0013, Mid-Size R820T

Since I got into rtl-sdr, there really hasn’t ever been enough tuners for me to play around on a given day. Now that I have a substantial tuner collection (three E4000’s, three R820T’s just for experimentation), I always feel the … Continue reading

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Freeview Sydney: New Digital DVB-T Carrier at 184.500Mhz (Ch 7)

Gosh things move FAST! Just this morning, Analog TV was turned off, and VHF channel 7 was vacated. While playing with rtl-sdr, I realize that there’s an OFDM signal in 184.500Mhz. I don’t remember seeing it right after the 9am … Continue reading

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Obituary: Analog TV in Sydney (1956(ABC,ATN,TCN)/1964(TEN)/1980(SBS) – 3 Dec 2013)

We all knew it was coming. The government did a good job of warning us, and today the day has arrived. As I write this, I feel some sort of sadness that a technology which has served us, incrementally improved … Continue reading

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Random Post: Ankle, Aldi Mobile “Unlimited”, Xmas Post, Device Updates, Pennytel, etc.

Hello guys! I’m back, but unfortunately, my body isn’t. I’ve spent a bit of time, in bits, collecting some thoughts which I should have posted about but haven’t had the motivation or time. Hopefully that keeps my readers a little … Continue reading

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Analyzing the Efergy HM01 Air Data Format

Isn’t it funny how having the Efergy HM01 power meter sitting on my desk, looking all “sad” from not being used makes me suddenly want to make an effort to try and reverse engineer the air interface? I suppose part … Continue reading

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Review, Teardown: Efergy HM01 Electricity Display Device

When you’re onto a good thing, I suppose it’s natural to just keep going. Knowing that my Efergy Elite 1.0 can be decoded using RTL-SDR, and knowing the e2 (presumably that is, the e2 classic that Nathaniel has) can also … Continue reading

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Random: Arrgh, my ankle! Energy Monitor Fun – tracing “vampire loads”

Another week goes by, and strangely, my ankle is still busted. As a result, life has been about being content with being bedridden most of the time and trying my best not to walk at all, in order to avoid … Continue reading

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