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4/7/2017 11:46 PM
 

I've been thinking about upgrading my VHF radio transceiver and noticed the ICOM A220 has a feature called GPS Memory Channel. On the 220's Product Description webpage is the following line:

 

"A pilot with the A220 connected to an external GPS receiver can pick up the local tower frequencies and automatically store them into the radios memory. This makes for a hands free safe transaction."

http://www.icomamerica.com/en/product...20/default.aspx

 

Is this a function the iFly 740 supports? If so, what steps are needed to make this work?

 

Thanks,

 

Andre'

 
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4/12/2017 9:58 AM
 

Andre',

I'm not sure what type of data the radio needs to make that feature work.  If it has it's own airport/tower database, then perhaps it just needs an NMEA data feed so it has position information...if so, then the iFly can provide that data.

-Walter 


Walter Boyd
President, Adventure Pilot
 
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4/12/2017 12:53 PM
 

Thanks Walter. Referencing the A220's instruction manual, it further states "refer to the GPS receiver's instruction manual for transferring frequency data." I believe the A220 is relying on the GPS for the airport/tower database info. Assumming the 740 and A220 do communicate via RS-232/NMEA, is there a button push/command on the iFly that could generate/send this info once selected by the pilot?

Andre'

 

 
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4/13/2017 10:20 AM
 

Andre',

Currently there is not - but it might be possible to add this.  Do you know what data the A220 is expecting?  I'm googling around, haven't found a singular method of transfering frequency data.  

-Walter


Walter Boyd
President, Adventure Pilot
 
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4/13/2017 3:51 PM
 

Walter -

I sent an email to ICOM and received the following reply:

"The way the radio is populated via the GPS is that the GPS unit you would be using would have the Jeppersen's database loaded on it (usually via a SD Card). The GPS unit would send that data along with the GPS data to the radio. The radio in turn would populate the GPS memories/standby memory in a rolling fashion during your flight. Pins 7 and 8 would be your GPS connection. You will have to use a GPS unit that has a NMEA 0183 output with a connection speed of 4800 baud."

The ICOM A-220 installation manual indicates for the rear connector, pin 6 is ground, pin 7 is serial data OUT and pin 8 is serial data IN.

I then called ICOM tech support and asked for further clarification on the NMEA sentence string structure and was told it uses NMEA-FSI.

Does this help?

Thanks,

Andre'

 
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