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The Garmin GTX435 itself can display NOTAMs, of which TFRs are one type. So it is certain, you can get the NOTAMs/TFRs via the GTX435 itself. If you need them from the 530W also, that's a different story, but since the GTX435 can receive and display NOTAMs, then it should be able to pass them on to the 530W. Did the shop explain their opinion or advice in the least, or was it a flat declaration?
The above, of course, depends upon whether the hookups for the 530W (compared to those for the 530) are the same.
If the Garmin GTX345 does not display NOTAMs, then I was mistaken - what I saw about that facility seemed to indicate such a capability.
Granted that the Garmin won't display them, then the alternative is to send them to an iPad (or, a compatible display.) Which of these are you aiming at getting working?
Do you observe yellow-bounded areas on your flight display map (or Map and XM Weather pages of the Nav page group) on the 530W ?
if so, move the map cursor to within the boundaries of the yellow-bordered area, and press the ENT key to view the information on the TFR for that region.
But you may need a GDL69 to see such NOTAMs ... the GDL69 is the XM Satellite Data Link.
Also see the TFR Information page, which can beaccessed from the Map page or the XM Weather page, for the full details of the TFR in question.
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That is perhaps disappointing but unsurprising. You will need a GDL69 or a GDL69A connected to the 530W in order to display TFRs on the 530W.
That is my answer to your question - it requires a GDL69 to display such TFRs, but with that it can be done.
How is the GTX345 hooked up to the 530W ? through what port?
What I meant by, "through what port," was:
What cable connects from the 345 to the 530W?
And what port on the 530W does it connect to?
A photograph might do...? you can take one and post it to me with your reply.
Then we can take up the case later, whenever you have gone to the aircraft and inspected the hookup, please.
to rejoin this case later.