---------------------------------------------------------- Avionics-List Digest Archive --- Total Messages Posted Mon 05/05/08: 1 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 01:44 PM - Avionics Upgrade options (n1345p) ________________________________ Message 1 _____________________________________ Time: 01:44:02 PM PST US Subject: Avionics-List: Avionics Upgrade options From: "n1345p" Avionics Upgrade options; I have A&P, BSEE, CFI-I and lotsa other letters... I have an instrument student with a 1962 Cessna 172 with the following: RST Audio panel/MB Works good. RST intercom Works fine. Terra TXN720 VOR needs calibrated; about 10 degree off. TRI-NAV-C To and From works, Couldn't get OBS knob to work. LOC worked fine, GS always max up when ILS freq was selected and receiving no GS in TXN720. King KX145 Audio is poor, both TX and RX, VOR head would work, VOR audio (HIWAS and Morse Code) was fine, but little action on the Indicator No TO or FROM, and needle moved by not seem unrelated to Nav inputs. We ordered the Terra manuals today from Essco, and will attempt to calibrate the VOR and repair OBS knob. I don't have any hope for the KX145. It may just needed reseating the radio into the rack. We'll try that. Now this student/owner wants to add a glideslope receiver to do his instrument training and increase the utility of his airplane. I think any radio shop would recommend throwing these radios away and starting new. Options are: 1. Lowest cost add an external GS receiver to the Terra TXN720 such as a TKM-MG-200 or other. Make sure the Terra radio with Channel the GS, and interface with Terra TriNavC, need splitter for VOR/GS antenna. Should be less than $1000 plus labor. 2. Next lowest cost - Replace the KX145 indicator with an Val INS422 - We put one of these in a Cessna 150. It is a good fit. Less than $2000. 3. Best Value Replace KX145 with Garmin 430W and GI106A likely 8 to 10 grand. 4. What other options should we consider? mitch Read this topic online here: http://forums.matronics.com/viewtopic.php?p=181315#181315 ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message avionics-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Avionics-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/avionics-list Browse Digests http://www.matronics.com/digest/avionics-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.