adamsboomer Posted March 26, 2015 Report Posted March 26, 2015 Having trouble determining where the trouble might lay in MK12D+ comm side. Nav and glideslope are fully functional. Comm side has receive range of only about 2 miles. Did the basics of pull and reseat a few times, I assumed antenna, switched radio 1 into tray 2 with separate antenna, still no luck. Radio 2 into tray 1 worked fine, therefore ruled out antenna. Tried to peek inside radio 1 to see back side of antenna connector but too tight to see anything. Radio receives fine but extremely weak range. Anybody got any ideas? Adam Quote
robert7467 Posted March 26, 2015 Report Posted March 26, 2015 Might be time for a new or newer radio. Quote
KSMooniac Posted March 26, 2015 Report Posted March 26, 2015 I just saw some ads in the paper version of Trade-A-Plane today for Narco repairs. We had those in my flying club planes in the 90s. They were so unreliable we kept 1 or 2 spares and cycled them through the repair shop. The good news is they can be repaired, or at least back then, but the bad news is that they need it! I'd call one of the repair shops and they'll probably tell you what the problem is over the phone and how much it might cost. Then decide if that money is better spent on something modern... Quote
Marauder Posted March 26, 2015 Report Posted March 26, 2015 Having trouble determining where the trouble might lay in MK12D+ comm side. Nav and glideslope are fully functional. Comm side has receive range of only about 2 miles. Did the basics of pull and reseat a few times, I assumed antenna, switched radio 1 into tray 2 with separate antenna, still no luck. Radio 2 into tray 1 worked fine, therefore ruled out antenna. Tried to peek inside radio 1 to see back side of antenna connector but too tight to see anything. Radio receives fine but extremely weak range. Anybody got any ideas? Adam Try checking out this link. The Comm modulation circuits on these radios can be problematic. There are shops, like the one that serviced me that can help. http://mooneyspace.com/topic/13858-help-a-cheap-bastd-out/?hl=%2Bmark+%2B12d Sent from my iPad using Tapatalk Quote
adamsboomer Posted April 2, 2015 Author Report Posted April 2, 2015 Thanks for the replies all. Guess for the price of repair I will just save up for a gps/nav/comm combo so as to comply with adsb later. Quote
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