Garmin BNC Connector GPS Notch Filter

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Part# 10-06988
MFR Model# 330-00067-00


Garmin BNC Connector GPS Notch filter for Garmin Experimental G3X.
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You would think the manufacturer could at least print a part number on the physical part, there is plenty of room, nope. Its just tossed into a bag with a couple part numbers on the bag, including the garmin part number.

Brian T
May 12, 2020

Interference from my dual Narco MK12E NavComms on my Maule during a GDL-82 ADS-B ground test completely obliterated the satellite signal when keying the transmitters. The installation manual suggested using this notch filter near the comm radio and ELT. This one was significantly cheaper than the TED version also available from Spruce, but only one was in stock at the time so I ordered a TED version as well. The Garmin version is manufactured by Telegartner in Germany, and worked OK on my Comm1 radio but not on Comm2. I was thrilled to find that the TED unit worked perfectly on Comm2, whose antenna is actually farther away from the GA35 gps antenna (5 feet vs. 3 feet). Go figure. Interestingly, this problem was completely independent of my ELT. Thats fortunate because its got an internally connected whip antenna that would not accept a notch filter. Garmin / Telegartner lost a star since it got outperformed by the TED on my Comm 2, but still got a 4 star rating cause it saved me about 90 bucks. PAPR validation flight was perfect.

Steven M
December 23, 2019


Please note, Aircraft Spruce's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

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