IFD 5 Series & IFD 4 Series Touch Screen GPS/NAV/COM

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IFD440 VOR reception

Printed From: Avidyne
Category: Avidyne General
Forum Name: IFD 5 Series & IFD 4 Series Touch Screen GPS/NAV/COM
Forum Description: Topics on Avidyne's IFD 5 Series and IFD 4 Series Touch Screen GPS/NAV/COM
URL: http://forums.avidyne.com/forum_posts.asp?TID=1738
Printed Date: 18 May 2024 at 7:17pm
Software Version: Web Wiz Forums 12.01 - http://www.webwizforums.com

Topic: IFD440 VOR reception

Posted By: vcollazo
Subject: IFD440 VOR reception
Date Posted: 08 May 2019 at 9:37am

IFD 440 not receiving VORs but fine on ILS localizers. Tried 2 different VORs with VLOC selected and had nav flag displayed and no audio. Both VORs were normal on number 2 radio. Has anyone seen this or have any idea what could be causing this?

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vcollazo

Replies:

Posted By: George P
Date Posted: 08 May 2019 at 12:21pm

Sounds like and antenna or cabling problem. VOR and LOC use different antennas, so it is possible to get one but not the other.

Posted By: MysticCobra
Date Posted: 08 May 2019 at 12:34pm

Lots of VORs are being decommissioned, and even the ones that aren't are slow to get repaired when they go down. Are you absolutely sure those VORs were operational at the time? (Confirmed on a different radio, maybe?)

Posted By: vcollazo
Date Posted: 08 May 2019 at 7:20pm

Yes my number 2 radio was receiving them. I will ask my avionics guy about the antennas though I always thought the localizer and VOR used the same antenna though the glide slope, being UHF, does use a separate antenna.

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vcollazo

Posted By: dmtidler
Date Posted: 08 May 2019 at 9:15pm

Have you seen this behavior across an IFD power cycle?

Posted By: vcollazo
Date Posted: 08 May 2019 at 11:14pm

Just last flight, and it was a short one. I'll have to try a VOR in the ILS frequency range 112MHz or less.

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vcollazo