SkyTrax Series ADS-B Receivers & Transceivers

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Dual Antennas?

Printed From: Avidyne
Category: Avidyne General
Forum Name: SkyTrax Series ADS-B Receivers & Transceivers
Forum Description: Topics on the Avidyne SkyTrax 978 MHz Receivers & Transceivers
URL: https://avidynelive.com/forum_posts.asp?TID=611
Printed Date: 26 Mar 2026 at 2:12pm
Software Version: Web Wiz Forums 12.07 - https://www.webwizforums.com

Topic: Dual Antennas?

Posted By: flybikeski
Subject: Dual Antennas?
Date Posted: 21 Mar 2015 at 5:49pm

My annual is coming up and I'd like to pre-wire in top and bottom antennas for the MLB-100. It looks you use standard blade-type DME/transponder antennas.

1. I will probably take out my King DME when I put in the 540. Can I just use the blade DME antenna as is (on bottom of aircraft)?

2. For dual antennas, do you just use a coax T connector to tie them together?

Thanks!

Replies:

Posted By: Gary T
Date Posted: 05 Apr 2015 at 4:17pm

Probably Steve is busy answering IFD540 issue questions.

The MLB100 brochure shows only one RF antenna connector and the suggested price of the unit

likely means that it will not have two antenna diversity reception (top and bottom). It makes sense to reuse the DME bottom antenna for ADS-B IN reception.

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Gary-T