AirTalk.org Aviation discussions newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  Adding a second CDI/GS          AirTalk.org Forum Index -> Owning Airplanes View previous topic :: View next topic   Author Message MP Guest Posted: Mon Oct 20, 2003 3:24 am    Post subject: Adding a second CDI/GS We have a Garmin GNS430, UPSAT SL30 NAC/COM and Sandel EHSI. I'd like to add a second course deviation indicator/GS for when Murphy shows up and the Sandel quits at the worst possible time. A couple questions for the avionics gurus on r.a.o: - How much is this going to cost? There's the cost of the instrument, whatever switches and annunciators are needed, and maybe 8 shop hours for installation and checkout. I'm guessing about $3k for the lot. Is that realistic? Anything else? - Can I switch the indicator between the 430 VOR/LOC/GS and the SL30 NAV inputs? - Is it very difficult/expensive (or worthwhile) to add the GPS deviation info to the second indicator? We have an MX20 to use as a moving map while setting the GNS430 display to CDI mode. Thanks in advance for some free advice. Back to top Ben Jackson Guest Posted: Mon Oct 20, 2003 6:53 am    Post subject: Re: Adding a second CDI/GS In article <Xns9419CF8D8CCA0doink (AT) 64 (DOT) 164.98.49>, MP <mp (AT) islandhoneymoons-no-spam (DOT) com> wrote: Quote: We have a Garmin GNS430, UPSAT SL30 NAC/COM and Sandel EHSI. I'd like to add a second course deviation indicator/GS Don't the 430 AND the SL30 have builtin graphical CDIs? Good enough for emergency purposes. If you add a second CDI you should be able to drive it in parallel with the HSI. -- Ben Jackson <ben (AT) ben (DOT) com> http://www.ben.com/ Back to top MP Guest Posted: Mon Oct 20, 2003 4:10 pm    Post subject: Re: Adding a second CDI/GS [email]ben (AT) ben (DOT) com[/email] (Ben Jackson) wrote in news:NDLkb.319561$mp.258797 @rwcrnsc51.ops.asp.att.net: Quote: In article <Xns9419CF8D8CCA0doink (AT) 64 (DOT) 164.98.49>, MP <mp (AT) islandhoneymoons-no-spam (DOT) com> wrote: We have a Garmin GNS430, UPSAT SL30 NAC/COM and Sandel EHSI. I'd like to add a second course deviation indicator/GS Don't the 430 AND the SL30 have builtin graphical CDIs? Good enough for emergency purposes. If you add a second CDI you should be able to drive it in parallel with the HSI. They do have CDIs, but no GS indicator, so for VORs and LOC they could do in a pinch. Also, they are off to the right in the panel, and are not in the normal scan path. We have an unused standard cutout right next to the HSI, a good place for a second indicator. Back to top Tri Pacer Pilot Guest Posted: Thu Dec 25, 2003 10:43 pm    Post subject: Re: Adding a second CDI/GS MP, I did that in my Tripacer, have a GNS430 and Sandel and KX-125. The backup indicator is a KI-209A. I had a couple of interesting moments because the 209A has a 'localizer' mode that is dependent on a LOCENGAGED low signal that switches the TO/FROM flag to TO. The 430 doesn't really put this out correctly. We got around it by tying it to the GPS/NAV switch. I also had to use the P6 connector of the 430 for my nav output to the 209, through a NAT 8pole relay. So, let's see .... NAT Relay - $160 KI-209A - $895 Switch and Light - $50 Avionics shop time - 3 to 4 hours Redundancy - priceless. Hope that this helps, Rod Wagoner Tucson, AZ MP wrote in message ... Quote: We have a Garmin GNS430, UPSAT SL30 NAC/COM and Sandel EHSI. I'd like to add a second course deviation indicator/GS for when Murphy shows up and the Sandel quits at the worst possible time. A couple questions for the avionics gurus on r.a.o: - How much is this going to cost? There's the cost of the instrument, whatever switches and annunciators are needed, and maybe 8 shop hours for installation and checkout. I'm guessing about $3k for the lot. Is that realistic? Anything else? - Can I switch the indicator between the 430 VOR/LOC/GS and the SL30 NAV inputs? - Is it very difficult/expensive (or worthwhile) to add the GPS deviation info to the second indicator? We have an MX20 to use as a moving map while setting the GNS430 display to CDI mode. Thanks in advance for some free advice. Back to top Windecks Guest Posted: Sat Dec 27, 2003 2:10 am    Post subject: Re: Adding a second CDI/GS Thanks for the advice. I was afraid we were going to get locked into the Garmin (read expensive) indicator. Maybe we can get it done for under $2k, your way. Cool. OBTW, a big AMEN on redundancy. "Tri Pacer Pilot" <rwagoner1 (AT) mindspring (DOT) com> wrote Quote: MP, I did that in my Tripacer, have a GNS430 and Sandel and KX-125. The backup indicator is a KI-209A. I had a couple of interesting moments because the 209A has a 'localizer' mode that is dependent on a LOCENGAGED low signal that switches the TO/FROM flag to TO. The 430 doesn't really put this out correctly. We got around it by tying it to the GPS/NAV switch. I also had to use the P6 connector of the 430 for my nav output to the 209, through a NAT 8pole relay. So, let's see .... NAT Relay - $160 KI-209A - $895 Switch and Light - $50 Avionics shop time - 3 to 4 hours Redundancy - priceless. Hope that this helps, Rod Wagoner Tucson, AZ MP wrote in message ... We have a Garmin GNS430, UPSAT SL30 NAC/COM and Sandel EHSI. I'd like to add a second course deviation indicator/GS for when Murphy shows up and the Sandel quits at the worst possible time. A couple questions for the avionics gurus on r.a.o: - How much is this going to cost? There's the cost of the instrument, whatever switches and annunciators are needed, and maybe 8 shop hours for installation and checkout. I'm guessing about $3k for the lot. Is that realistic? Anything else? - Can I switch the indicator between the 430 VOR/LOC/GS and the SL30 NAV inputs? - Is it very difficult/expensive (or worthwhile) to add the GPS deviation info to the second indicator? We have an MX20 to use as a moving map while setting the GNS430 display to CDI mode. Thanks in advance for some free advice. 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