A tribute to Unwired

With the announcement this week that Optus has decided to shutter the operations of Unwired, I thought this would be a fitting time to produce a blog post as a tribute to the service.

For those who don’t know, Unwired was an Internet Service Provider in Sydney and Melbourne which offered wireless internet. Their service was somewhat unique at the time, they pushed a nomadic wireless service which could be used at any place within the coverage area you desire, however they did take your address so that they could use the data to plan network capacity accordingly. Their network was also unique and “cutting edge” at the time, being an IP only WiMAX (or pre-WiMAX) service. They didn’t have the capacity issues that 3G services had, and they didn’t have the outrageous data costs that the other services of the time had, although they were expensive compared to fixed services.

At the time, the service was intensely marketed to those who move house a lot or maybe were renting. We definitely used the service as we were renting, the main convenience being the lack of re-connection fees and the lag time between connection and moving. That was a great convenience. Unfortunately, for Unwired, they never really had many customers at all, and their reputation was relatively poor for numerous reasons.

The company was founded when they happened to win a microwave allocation in the 3.4Ghz band and decided to establish a multimedia service. The ISP was then bought out by Seven Network (yes, the TV network), which had hoped to leverage the network to provide multimedia services to people on the go, but it never really worked out. They did some work to try and reduce the amount of money they were bleeding at the time, but they weren’t really successful against the relentless data discounting that fellow mobile telco companies were doing. Then it was bought out by Optus, probably for the lucrative spectrum licenses they had, which leads us to where we are today – being shuttered and closed down. Interestingly, many of the spectrum licenses were held under shell companies called AKAL and BKAL, to try and hide their existence from competitors. The original term of these licenses was for 10 years, and in other states, these licenses were held by Austar (if memory serves me right).

There were many problems though. The service itself was very lacklustre in speed and reliability. Being microwave in nature, it was touted as being working even with no line of sight, but that was rarely the case. It was affected by weather and other multipath issues. In fact, these modems are HATED by many satellite enthusiasts because they cause severe interference to LNBs operating in the C-band, especially those with extended frequency coverage, and as their signals were much stronger than those from satellites, even spillover was enough to desensitize a satellite TV system into failure. Filters for this interference were extremely expensive and difficult to come by as well. They claimed to use microwave backhaul, which didn’t help latencies. They seemed to have made conscious decisions to limit the amount of base stations – they had substantial care to try and maximize coverage but unfortunately, due to their stinginess, it wasn’t really satisfactory. There were many blackspots and areas where there were competing signals. Ultimately, contention was the main killer, causing massive packet loss and speed losses to the point that VoIP rarely worked adequately and file uploads were almost always doomed. Their promise was only 50% of the advertised speeds for 60% of the time. If anyone was promising that, I can’t say that it’s really a solid deal.

They did offer services with no excess fees, offering throttling when you hit the data limit rather than cutting you off directly. There was also the option to pay for a data allowance top-up to restore full speed, and try to milk the customer for a bit more money. This strategy was one that was later recommended for even 3G internet when it was clear “unlimited” plans were unfeasible. They eventually even introduced a prepaid service to try and get some more occasional customers. Then they did some work in weeding out unprofitable customers (like me) by issuing Acceptable Usage Policy violations for high levels of uploads etc.

So it was a sub-par connection, for a moderate price, that didn’t work at high speeds (They offered 1Mbit/s maximum from memory), with patchy coverage and ultimately, the network collapsed under the poor opinions.

So why does it deserve a blog post? It was special. Yeah, that’s right. The system itself was based on the Navini Ripwave pre-WiMAX system – this itself was a unique selling point. WiMAX was the standard which was being ratified at the time that was supposed to be the next 4G standard offering metropolitan area networks. At the time if it was built, if you were smart, you would probably invest in this thinking that you’d be the next big thing. (In fact, they knew that bet was up and started another company, which offers 4G using the TDMA version of LTE called Vividwireless, which is also being shuttered by Optus.) The standard itself took a long time to be standardized, and Navini was a big player in the negotiations that eventually had a fall-out. Smart people were buying into the Navini system under the expectation that it would become the WiMAX system of the future and it would be directly upgradable to WiMAX compliance. Unfortunately there were issues with standardizing frequency bands for WiMAX use and MIMO training techniques which held up the standard from memory. The interesting thing was that this system involved the use of smart beamforming, and MIMO, which was reflected in the high upfront cost of the modems. This was apparently also marketed as a security thing – i.e. other people won’t hear your data.

This system did have something which other networks didn’t – they specifically made this network “fairer” than the others. The network operated using time-slotted access, and each modem had a fixed number of timeslots to use with the base station. Based on data loading, some random-access slots could be allocated to modems on demand thus alleviating congestion while allowing a minimum QoS to each modem. Further to this, (in a strange way), the modems were also capable of “relinquishing” their allocated slots if they had no data to transmit. Yeah, I was a sucker for believing in this – in fact, this was the cause of many peak-time modem-roams to adjacent “lesser loaded” stations. The closest station to me is ~ 1.8km away in Guildford. Next closest is 3.2km to Condell Park. Unfortunately, even with the Guildford base, it was very marginal. When it connected to Condell Park, it was as good as not having a connection at all. (Unwired had a habit of naming base stations using a numbering system, and people had driven around using their modems to pin-point the modem base stations using the distance readouts, and also using the ACMA database. The base stations themselves look like a grey multiple-slotted toaster (due to the multiple antennas for MIMO), and normally are clustered in threes or sixes.)

The modems themselves were Navini Networks Ripwave MXs (and then later, Cisco branded ones) looked like this. They were often referred to as “rabbits” due to their ‘ear’ antenna, but technically they were known as webbits. This particular version is the Ethernet with LCD edition, there was an earlier variant with three LED indicators for signal quality instead. The power supply was a 6v 3A supply, earlier there were lesser powered adaptors which caused problems with malfunction of some modems and were exchanged. The badge on the side that said “Unwired” unfortunately fell off.

These modems connect via Ethernet, although variants involving USB were available. Unfortunately, no matter which variant you choose, you still need to use the external power adaptor with it. For those who want to be a bit more mobile, external battery packs were offered which clipped into the holes at the bottom, being an integrated package. They weren’t cheap though.

Other than that, you can use the PCMCIA version of the modem, but that had poorer coverage on a network with already poor coverage. And that modem would cost you somewhat more. The network itself was stated as a nomadic wireless, rather than mobile wireless, so you can’t use it while you’re in a moving car or train as the connection would drop out. The beamforming might have something to do with that one. Interestingly, there was no IP portability between base stations which made a dreadful experience. When the modems would roam from station to station, all the IP sessions would break and that would make you curse and swear.

Moving into a new house means moving around the rabbit for optimal reception. In order to make this happen, there is a set of diagnostic utilities called Navini Diagnostics which allows you to see the signal levels and signal quality as well as a front panel LCD which you can use to guide you. Yes, we had to turn these things around, sit them high and low. It was a lesson in frustration.


The positioning of the device was extremely important to getting a good signal as the device has three antennas – a patch panel on each side of the body and an “ear” that was more omnidirectional but had less gain. Should the modem be swapping antennas a lot, the connection would go flakey. So much for antenna diversity. How do we know what the ‘rabbit’ is doing? Well, we’ll get into that later, but first, lets admire the insides.

Prying the modem open was not an easy task – it’s very difficult, and unfortunately, my ‘rabbit’ suffered a broken LCD as a result. But prying it open lets us admire the insides and just how this thing worked.

Cracking it open required a lot of persuasion from a flat head screwdriver. Minor damage to casing. Inside, we find a lot of metal – in fact, it’s a heatsink that encases the PCB from both sides, secured together with screws. Using foam-rubber tape, the patch panel antennas are attached to the sides of the heatsink, and have to be peeled back to get the heatsink off (irreversibly damaging the foam rubber tape itself).

There is an interesting opening at the bottom of the heatsink set. I’ve been told that this is for use for calibration of the modem itself, as frequency drift over temperature can be important to the modem, so they probably test it and produce correction data in the ROM. More on that later. Of interest is that the modem used a 10BaseT connection, only 10 megabits by ethernet, and half duplex too. So it could never compete with modern connection.

So once we unscrew the many screws and peel back the antennas, we are rewarded with the PCB:

This picture shows us the powerhouse the modem is. Three TI DSPs and or OMAP CPUs, it’s more than most appliances have. I guess it’s a sign of the fact that these modems weren’t yet popular enough yet to have fully integrated ASICs and SOCs made, and the use of CPUs and DSPs would have provided flexibility through firmware updates to change modem operating parameters.

Not much on the front half of the top side, there’s a crystal I can recognize but that’s about it. Time to flip it over …

On the back, there’s SMSC MAC for LAN (I think), an SST flash memory chip and the rest of it is likely to be for the RF side of things. The whole combination puts out a LOT of heat, typical operation sees temperatures about 60-70 degrees!

Ultimately, I reassembled the modem and it still worked, although it was out of service as we had terminated our contract with Unwired, having migrated to dial-up and then ADSL2+.

So back to the original question, how do we know what the ‘rabbit’ is thinking? Well, there was a tool called “Navini Diagnostics” which provided much diagnostics data. It is not compatible with Windows 7 (initial install screens on Windows 7, but the program doesn’t work), so I had to dig out an old XP machine to get it working. The communication for the diagnostic data was performed by UDP packets sent periodically from

The install page, I love the slogan.

We also need to run an old version of Java to get it to work properly. Hmm. Anyway, this is what the main screen looks like, some basic signal quality and strength trend data is given, but otherwise, it’s mostly spartan.

Interestingly, these modems also featured over the air updating for firmware updates. Through the lifetime of the modems, I had only seen it update once – from 4.5.0(UD) to 4.5.2(JD). The modems themselves featured two roms, so that should an update fail due to the modem powering off during update, then the modem will not be bricked. One of the things about the update was an apparent increase in signal strength into good-regions despite the signal not actually improving. So while it might show good, the service wasn’t really any better. Way to trick the end user. Worse still, should a firmware update actually occur when someone was using the modem, the modem will reboot itself thus breaking all the connections.

The real power comes with the special key-combination of CRTL+SHIFT+F10, which unlocks the hidden options. Yum!

The signal trend option can be used to graph various options. Nice! You can see that the modem is capable of 25dBm transmit power (316mW) and was topping out from time to time, suggesting that the base station is about as far as you can reliably connect. The signal level is a paltry -90dBm to -100dBm.

One of the impressive things I found was the ability to see the signal constellation, so you can judge what the signal quality is like:

Aside from that, there’s also a long list of information available on the modem itself – signal to noise ratios, BERs, temperatures, reboot reasons, distance to base station. Click on any of the thumbnails to enlarge:

You can also get all the specific data from the modem – my modem’s data dump:

Equipment ID
Network Id
Frequency Band
Interface Type
:LCD Ethernet
Active Software Version
:4.5.2 built at 08:36 AM on 02/14/2007
Standby Software Version
:4.5.2 built at 08:36 AM on 02/14/2007
Hardware Version
Boot Loader Software Version
:4.0 built at 02:45 PM on 05/28/2004
Band Width Limiter
Manufacture Date
Band Begin Frequency
Band End Frequency
Band Search Step
Serial Number
:0004 6abd 63fe
Machine Address
:0004 6abd 63fe
Transmit Flatness
:0000 0000 0000 0000 0000
Hardware Feature Mask
CPLD Version
Calibration Temp Reference
Factory Reserved
:0017 02f0 f9e7 0304 05ff 04fb 0000 0000 0000 0000 0000 0000 0000 0000 0000
 Calibration Data 0046 ffd4 0011 0012 0013 0014 0015 0016 0017 0018 0019 001a 001c 001f 0021 0024 0026 0029 002b 002e 0032 0035 0039 003c 0040 0043 0048 004c 0051 0056 005a 005f 0064 0069 006d 0072 0077 0037 003b 003f 0043 0047 004b 0050 0055 0059 005e 0063 0068 006c 0070 0075 007a 007e 0080 0083 0086 0088 008a 008d 0090 0093 0096 0098 009b 009e 00a1 00a6 00aa 00ae 00b1 00b4 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0001 00f6 00f6 0046 ff93 0011 0016 001b 0020 0025 0029 002b 002d 002f 0031 0034 0036 0038 003a 003c 0040 0043 0046 0049 004c 004e 0051 0054 0057 005a 005e 0060 0062 0064 0066 006b 006e 0071 0074 0077 007b 007e 0081 0084 0087 0088 008a 008c 008e 0090 0091 0094 0097 009a 009d 009f 00a3 00a7 00ab 00af 00b1 00b3 00b5 00b7 00b9 00bc 00be 00c0 00c2 00c4 00c8 00ca 00cc 00ce 00d0 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 0000 
Number of History Frequency
History Frequency List
:3170 2975 3375 3175
Number of Colocated Frequency
Colocated Frequency List
Number of Neighbor Frequency
Factory data version
Tx flatness step size
Tx flatness
:2053 770 256 0 1 1030 2057 2570
Rx flatness step size
Rx flatness
:513 0 -1 0 0 257 514 514
Tx temperature compensation step size
Tx temperature compensation
:25 -258 2 1032 3341 3341 3341 3341 -258 2
Rx temperature compensation step size
Tx temperature compensation
:0 0 0 0 0 0 0 0 0 0
:4d 4d 0 0

You can also do a location-test log which logs all the signal strength data for later analysis, and if you attach a GPS, you can also perform a drive-test log which has the details of position and signal strengths as well. A very powerful and necessary tool to get the most from your connection.

So there we are, pretty much the ins and outs of Unwired and their modems. Both literally and figuratively. As you can see, I had high hopes for it back then as the technology was wonderful. Now this will just remain another one of those technologies which has since expired and become irrelevant. It wasn’t the only one though – I will cover another similar technology in one of my future posts.

[Aside: Hi Jeff!]

About lui_gough

I'm a bit of a nut for electronics, computing, photography, radio, satellite and other technical hobbies. Click for more about me!
This entry was posted in Computing, Obituary and tagged , , . Bookmark the permalink.

4 Responses to A tribute to Unwired

  1. Clive says:

    Hi. I have an Australian Unwired Modem. Can this now be used in any way that is useful? Or do I just throw it away. Thanks

    • lui_gough says:

      Generally they will not be of use for connecting to the internet as the Unwired pre-WiMAX system has been disassembled in Australia. If you are attempting to use them overseas, they would not be of use as they are pre-programmed with a network ID to connect to, and it is unlikely that the overseas systems would operate with the same network ID.

      It still works as a cute door-stop, or maybe you could take it apart and see if there are any components you’d like to de-solder and repurpose (although, all of them are surface mount devices and I highly doubt there’s much to salvage).

      Other than that, I suppose the modem could be binned. The power adapter could come in handy for other devices/uses and you should probably keep that.

      – Gough

  2. matt says:

    I think you down play just how useful this thing was.

    When it first came out, the modem was outrageously priced at $170, but selling second hand for $20-$50 on fleabay (ebay). It wasnt until they dropped the price of the modems to $100 that they really started to take any traction.
    Now for myself, we chose unwired as we dont have a working phone line, (so would have to pay a massive fee for a linesman to come out) this is in addition to any other connection fees involved in joining a new network. They have had “naked” internet for a long time now, but I believe that when we tried to get home internet, they did not have this at that time. Getting unwired was a lifeline.
    From memory, I was paying $35 a month, for 5gb peak data, and i think 10gb off peak data at a speed of 512kbs (half a mb) -> sounds slow, but I was getting FASTER speeds then my workplace as they were on dialup at the time (I think 56kbps or something)

    Combine this with my old 3 mobile, it was $19 a month and add another $10 for a 2gb data pack. So I usually spent around $64 – $70 a month on mobile phone as well as home internet.

    512kbps might sound slow, but for checking emails, ebay, and everything it was fine. Remember, the web was “lighter” back then. At night, I would update the windows, and linux computers, I would download a few iso files if i needed, etc. I had a freenas server setup for torrents which I could start/ stop so it would download in the offpeak times.

    Everymonth I would usually have data unused, yet my network was setup so well, all the phones linked to it automatically (so my wife didnt need data packs on her phone) and kids could use internet for homework easily enough and anytime they wanted. With the “unlimited” data (that is they throttle you and no excess fees when you go over) it was a godsend compared to other options, where using too much gives you billshock.

    The advantage of being able to take the modem with you, and effectively take your “home internet with you” was amazing as well, there just was not many options available when unwired first came out.

    When unwired closed, optus send out some crappy special offer. I could not afford it. In now way did it compare to what I had with unwired.

    I had to jump onto aldi mobile (5gb data, for $35 and gave $10 credit which could be put towards the bill making it $25 for 5gb) -> wasnt long before THAT collapsed, and now I am with amaysim struggling to live on ONLY 5gb data a month. When we go over, data packs are $10 per gb. My partner also has to pay for extra data for her phone, and essentially, things like the kids being able to do school work online (they had a reading eggs account) became a luxury, and something we could not afford. Home computers cant be updated until the last day of the month, and thats IF I am lucky.

    Taking a home phone is just not an option right now. I will be moving in 3-6months, and again about 6-9months after that.

    In 2015, having only 5gb data for personal phone, and for home internet for the entire family is PAINFUL. In fact,

    I am not alone. I have 2 guys at work that rely on usb modems to provide internet to their homes. There is still a market for unwired. I think what their biggest issue is that the modem pricing was too high for no included data, and the other downside was the “availability”. Everywhere I went I had great reception, but when buying the modem, the salesperson cast “significant doubt” and everything, promising refunds if no reception…. I went from a confidant buyer, to WTF>… putting it back, and then months later finding a cheap one on ebay to try it out. Those salepeople at dicksmith did damage their reputation, and if the modem is $170… it makes it worthwhile calling other companies to see if you could get home internet connected up for less then that. I have seen others holding the modem in dick smith, going to the counter, then walking away without buying it….

    I still have my original modem, and when the power supply died (about a week or two before the company announced its closure) I sourced 2 other modems with power supplies on ebay. So now im stuck with 3 modems, and 2 power supplies

    I have never thrown them out on the hope that the company would organise a recycling day for these. In addition to the modem, there was alot of equipment that was made redundant,Imagine, if all of these modems and everything that was made redundant, were rounded up at the time, and the technology sent to developing countries.

    The saddest thing about unwired is that I only experienced 1 major downtime in all the years I was with them, they just had exceptional reliability, and I have even had inverters running from the car to run the modem / laptops while travelling.

    Even when I do eventually get home internet, I highly doubt that I will have home internet, and mobile phone plan all for under $70 per month.

    Rumour has it that when unwired was sold to optus it was making a profit, and optus brought it specifically to kill it for the lucrative spectrum licenses.

    End of the day, I believe that everyone that still has an unwired modem, should be able to launch a class action against optus for compensation. They really did a piss poor job of retaining the unwired member base, offering “a special offer to unwired members” which was too expensive, and was the exact same offering in shop available to anyone in australia.

    • lui_gough says:

      I agree with you, especially on the problems with the shuttering and the lack of a well-priced data-only network. This might change with the advent of TDD-LTE services, and a lot more spectrum, but I doubt the mobile operators will give good pricing. The trend has been to include less data on all of their plans, and I agree with your disappointment especially for fixed-line replacement – it’s just not a viable alternative just yet.

      However, I can definitely say that the signal was always a problem for me – even at 1.8km from my nearest base, the signals were red-yellow borderline, and inconsistent. During occasional storms, it would connect to a base 3.8km away, dropping all internet sessions (due to change of IP) and even flakier throughput. VoIP was very problematic over Unwired, but we were renters and we did move around a lot, which did help with line rental/activation charges, and overcome setup fees which can add up pretty quickly. They never were able to deliver the stated throughput for me, and really was close to 60-75% at the best. I did consider returning my modem, but I eventually kept it, because every wired-alternative was a bit pricier. The 32/32kbit/s “cap” after running out of quota really helped us get the most of it. They didn’t do a good job of being profitable, however.

      The problem with Unwired was the use of Navini Networks gear, which was pre-WiMAX standard. They claimed to all early adopters that, as a strong driver of the WiMAX standard, that they would be able to convert all their equipment to the final WiMAX standard. As it turns out, that was not actually possible in the end, which locked everything into Navini gear which had supply issues, especially once they were acquired by Cisco Systems. This pre-WiMAX died off, and the bases were disassembled, but I don’t know what happened to the gear (but I doubt it would be redeployed, just like the iBurst gear).

      Apparently Vivid Wireless that took over, actually used a proper WiMAX system with different modems, which required a different set of bases, which only increased the cost to the company, which was owned by 7-networks in a misguided attempt to provide “mobile” video on demand (which never came to fruition). Optus bought that, shuttered it, to get the spectrum so as to deploy new FDD-LTE.

      There were problems with the WiMAX operating in the ~3.6Ghz band, as it caused interference to satellite TV users. The C-band satellite LNBs were commonly overloaded by nearby Unwired users, and that was relatively “unwelcome”.

      When I went to ADSL2+, there really was no going back. It’s great that my rental days of hopping about are over, but I do still use mobile data, despite its inconsistent quality of service.

      Many thanks for adding your point of view.

      – Gough

Error: Comment is Missing!