---------------------------------------------------------- Avionics-List Digest Archive --- Total Messages Posted Mon 09/20/04: 2 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 03:37 PM - DME Channeling (splevy@l-band-systems.com) 2. 06:57 PM - Re: DME Channeling (Pete Waters) ________________________________ Message 1 _____________________________________ Time: 03:37:38 PM PST US From: splevy@l-band-systems.com Subject: Avionics-List: DME Channeling --> Avionics-List message posted by: splevy@l-band-systems.com I am looking into adding a DME unit. Hopefully some one can answer a couple of questions: Can a King KN62/4 DME be interfaced to the channeling outputs of a Narco 122 nav unit? Where can I find the pin connection information on the King DMEs? Thanks for any help. Stan ________________________________ Message 2 _____________________________________ Time: 06:57:52 PM PST US From: Pete Waters Subject: Re: Avionics-List: DME Channeling --> Avionics-List message posted by: Pete Waters Stan, I went though this same question about a year ago. I concluded that the KNS-80, which has DME built in to a VOR / ILS box equiiped with RNAV function, was the most cost-effective way to get DME. Stand-alone DMEs seem to cost a bundle an really provide very little -- just a distance to a ground station. With the KNS-80 you also get VOR-based RNAV capability (although you can only program a maximum of four waypoints at a time). However, this lets you fly to fixes defined by a radial and a DME and simply follow your CDI needles like you're tracking a radial. The DME countdown will tell you when you get there. A downside is that there are limited numbers of indicators that are compatible with the KNS-80. The usual KI-209 that goes with the usual KX-155 won't work. A KI-206 will work, but it's more expensive, so you'll lose mone on the trade-in. Another thing to think about is that you probably don't want DME per se, you want DME **function**. As far as I know, this can be supplied by the DME readout of a GPS if the GPS is certified for that type if flight. I.e. if you want to use the DME readout of a GPS for en route IFR nav, it's got to be an enroute-approved IFR GPS. I'm not sure what the rule is for approaches...since 1/10th of an NM on a DME readout is 600 feet, and approach-certified GPS's are tighter than that, I'd think that you could use GPS "DME" on, say, a VOR/DME or ILS/DME approach (especially on an arc or to define a missed approach point), but I'd like a second opinion on that. Full-disclosure here -- I actually bought a used KNS-80 and KI-206 about a year ago for installation in my RV-4. Since then, I've decided to go with a approach-certified GX-60 and NAV-122 combo, mostly becasue of weight and space in the tight RV panel, and so I could shoot GPS approaches. You might want to check out that path as well. Otherwise, note that I'm planning on selling the KNS-80 and KI-206 in a few weeks. Contact me off list if you might be interested in it. If you want to buy from a vendor, you can get the KNS-80 / KI-206 combo from Eastern Avionics (among other places). In the least, you can check out their website for a description. - Pete Waters N562PW splevy@l-band-systems.com wrote: --> Avionics-List message posted by: splevy@l-band-systems.com I am looking into adding a DME unit. Hopefully some one can answer a couple of questions: Can a King KN62/4 DME be interfaced to the channeling outputs of a Narco 122 nav unit? Where can I find the pin connection information on the King DMEs? Thanks for any help. Stan