Andy wrote in reply to; [snip] " It's a transmitter. Is there any
chance it
will interfere with PCAS, radios, bluetooth, or other equipment in my cockpit?

"IDK - I have not heard of issues in Europe." [end snip]

Then I suggest you read my post, above. The GPS aerial did seem to
suffer interference, when next to my Volkslogger. When Flarm is
switched on, it goes through a boot-up routine, after which if all is
well it has 3 green led’s, one of which shows it has a GPS signal good
enough to do its stuff. Mine would not show that consistently until
the GPS aerial was well away from the other one on the Volkslogger.

I know somebody else who was investigating a similar issue,
inconclusively AFAIK.

I have not heard of any problem of interference arising from the other
aerial, the Flarm-Flarm radio transmit/receive – only the partial
masking by carbon fibre that I mentioned. But these are very weak
signals – I expect it would not take much to disturb them.

Chris N.