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Mobile UHF Antennas

UHF Explained


Whether you are planning a trip into the Australian outback, towing a caravan on back top or a weekend 4WD adventurer, then a UHF Radio is an essential communications tool to have. UHF (477MHz) radios have nearly replaced the older 27MHz CBs, mainly due to their considerable price drop over the past decade and the extended range offer by repeaters located throughout Australia.

UHF CBs use Frequency Modulation (FM) to transmit/receive. Since UHF signals generally travel in a straight line, the terrain impact how well the signal is transmitted or received. For example, UHF CB radios will perform poorly in hilly or forested areas and perform well in flat open countryside. UHF CBs can also access repeater stations that re-transmit the signals on another channel which can provide much further coverage (see Repeaters for more information).  Want more?  Read more

Satellite Phones

Top 10 Sat Phone Tech TIPS  Provided by MGLSAT 

1.  Getting Connected  

TIP:  Only open the antenna outside, after you have turned it on and can see the blue screen.  Always be outside with a clear view to the sky and as much of the blue stuff as you can get.  Stay clear of objects like towers etc that may block and interfere with the signal getting to the satellite.  After all its 37,000 km's away so give the signal the best change possible by being patient and clear of objects.  Again, only open the antenna after you have a fixed standing position and the handset is powered up and the screen message is "deploy antenna for use".
2.  Staying Connected
TIP:  Keep clear of objects and with the antenna pointed towards the satellite (look for white bars on screen) and keep it pointed towards it, DONT WALK AND TALK!  The satellite cant move so give it the best chance to see your antenna by staying fixed in a single spot.
3.  Checking Prepaid Airtime Balances
TIP:  Its free to check your balance, make sure you are outside, a clear view of the sky and connected and "ready for use" on screen.  Go to MENU-TOOLS-PREPAY-BALANCE ENQUIRY Make sure you do this before you set off on your trip.  Allow time for airtime to be applied if you purchased some
4.  Buying Airtime On-Line
TIP:  Before you head off, go to and buy some airtime to keep you and your family covered.  Always allow more airtime than you will need.  Better to have and not need, than need and not have!!  Allow 24-48 Hours beforehand for airtime application to the SIM card.
5.  Emergency Services 000
TIP:  Before travelling look up on the internet for some local emergency contacts in the locations you are heading to and save the direct numbers for these into your phones contacts.  000 wont be much help in the middle of the outback so ensure you have the Royal Flying Doctors numbers loaded.  See for details. 

6.  Making Phone Calls
TIP:  When making phone calls to family and friends in Australia, dial +61 then drop any zero and dial the remaining number.  Example.  (07) 8211 8000 becomes +617 8211 8000.  Calling a mobile is the same.  Example 0407 006 711 becomes +61 407 006 711.
7.  Call Costs Calling a Sat Phone
TIP:  DONT!!!  Please refrain from using landline services to call international satellite handsets.  The call costs are extremely high and has been quoted at $19 (Telstra) per minute!!  Simply get family and friends to text you from their mobile at a low cost or free on the home page at
8.  Message Bank
TIP:  Don't use message bank on your satellite phone.  It is better to turn this feature off.  The reason being, your friends and family wont appreciate the expensive bill they will get for leaving a message, and also you get charged more per minute to contact the satellite and retrieve the messages also.
9.  Firmware Update 5.3
TIP:  We have made quite a lot of noise about this but it seems to be getting ignored.  As of the 31st of December 2013, if you havent upgraded your satellite firmware (Inmarsat handsets only) which is the brain of the phone, your handset will fail to connect to the Inmarsat network.  You can go to the Inmarsat website or as even most of our staff have done, simply pay the engineer fee of $79 and get a satellite technician to do it for you.  Go to and look at the firmware section for details or call 1300 645 000 to make a booking to get this done.  Also see the Firmware column to the right on this email.
10.  How to's
TIP:  Whilst we do as much as we can to assist here at MGLSAT, we cant offer full user tips as detailed as the people who made the handset, Inmarsat.  Be sure to take a look at the CD provided in your box at time of purchase, or the how to's under Frequently Asked Questions (FAQ's) at  We will be doing a revamp of the website including some small videos on how to use the handset in the very near future.

Please ensure you keep your address details up to date and use the website as much as possible.  Let us know if there is anything you feel we can do better as we constantly strive to improve our services to our customers.  A loyalty card system is expected in 2014 that will give discounts on our products and services which is growing monthly.

 For more great information on Satphone services click here for MGLSAT.  

The government subsidy for satphone purchases will cease as of 30 June 2013.  More info on these links.  Press release 31-January-2013  PDF Fact Sheet

Link to application info and forms

GPS way points   If you wish to program "way points" into your GPS here is a useful site to gain your Lat and Long data.  Just fill in the required info.
Any changes to the GPS system can be obtained from

Repeater Station locations  An interactive listing of all licensed Australian UHF CB repeaters, that can be searched by clicking on a location on a map, by town name or postcode, by call sign or by state. Site users can update the current operational status, and link to maps of the repeater locations are provided.  Thanks Nigel

Radio Talk  VKS 737 Radio Network, a division of the Australian National 4WD Radio Network Inc have kindly provided detailed documents in relation to two way radio use.  These documents are in PDF format and you will need Adobe ReaderIf you do not have Adobe Reader click the link below.  It's free.  Our thanks to Management and Team at VKS 737 for this information.

Communication System comparison

HF Radio essentials

Profile of the VKS 737 Radio Network


Satellite TV for Caravans and Motorhomes  Interested ?  Click here       


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