User's Manual

TECHNISONIC INDUSTRIES LIMITED
www.til.ca
TFM-550 Installation & Operating Instructions TiL 99RE262 Rev A Issue 8
A-2
RESULTS
If the installed system passes all of the applicable EMI tests, then no further action is required. If
interference is observed, then the interference must be assessed against the appropriate
standards of airworthiness for the system in question. For example, it is permissible for a VFR
certified GPS to lose navigation capability while the TFM-550 unit is transmitting, providing that it
recovers properly and promptly. It is not permissible for an IFR Approach certified GPS to be
affected in the same way. A complete discussion of all the standards of airworthiness to be
applied in assessing EMI effects is beyond the scope of this document.
PROCEDURE
A. Operate the TFM-550 transmitter on the following frequency for at least 20 seconds. Observe the
GPS for any degradation in satellite status or availability or flags.
FREQUENCIES GPS #1 GPS #2
TFM-550 PASS FAIL PASS FAIL
39.3850 MHz
143.180 MHz
143.1825 MHz
157.5000 MHz
157.5425 MHz
512 MHz
NOTES: