Isatphone handset messes up Iridium

There have been reports here in the distant past about side by side performance with Iridium looking poor. This may be one reason, from Wikipedia ..
INMARSAT and Iridium frequency bands abut each other at 1626.5 MHz thus each satcom radio has the ability to interfere with the other. Usually the far more powerful INMARSAT radio disrupts the Iridium radio up to 10–800 meters away.
Also note that an IsatPhone can be reached by Skype at either AUD 2.82 or c. 7 per minute. Which it is will be clarified. Much cheaper than Telstra.