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#11
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On Wed, 29 Dec 2004 09:37:37 -0600, "Jim Burns"
wrote: Could be. Yesterday he visited the FBO that we used to lease the 182RG from and they checked that one, it was only 28v. We're kind of in a 430 deprived area of Wisconsin Jim I don't know how far North in Wisconsin you are, but if you can make it to Chicago DuPage, JA Air Center is an absolutely stellar avionics shop. I also believe they are the largest Garmin dealer. When my KX155 was not driving a GS correctly, they bench tested it for free, and the tech took the time to show me the performance on the bench. It is rare to find this kind of customer service. -Nathan |
#12
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One of our partners actually has a relative that works at JA, so we are
familiar with them, but we're several hours flight away. We'll look locally first, then expand our circle. Thanks. Jim "Nathan Young" wrote in message news On Wed, 29 Dec 2004 09:37:37 -0600, "Jim Burns" wrote: Could be. Yesterday he visited the FBO that we used to lease the 182RG from and they checked that one, it was only 28v. We're kind of in a 430 deprived area of Wisconsin Jim I don't know how far North in Wisconsin you are, but if you can make it to Chicago DuPage, JA Air Center is an absolutely stellar avionics shop. I also believe they are the largest Garmin dealer. When my KX155 was not driving a GS correctly, they bench tested it for free, and the tech took the time to show me the performance on the bench. It is rare to find this kind of customer service. -Nathan |
#14
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don't know if I would trust that VOR or the GPS.. so I go cross country
somewhere and have to dial in the VOR freq that totally sends the GPS into oblivion.. that would just not do... But VORs only receive, so how would the VOR disrupt the GPS? And before the flamers start.. he said VOR.. now.. if he meant to say a combined VOR/DME unit, then yes.. the DME transmits, and on it's freq it may disrupt the receiving of GPS signal. but then again.. why would I trust that VOR/DME/GPS combination. Tony... either never leave to the local area, or don't count on the GPS when you may really need it. Either that, or just shut down your VOR receiver. BT "tony roberts" wrote in message news:nospam-B25E4B.17514031122004@shawnews... It happened to me with my 196. Finally discovered the problem. The plane had been in the avionics shop and while there they had dialed a new frequency into the VOR (don't remember what it was now). After spending lots of time searching and testing a friend told me to try switching off all of the avionics - and the gps came back. Turn on the VOR - lose the GPS! After tuning the VOR back to a local frequency the problem disappeared. Worth a try before you start spending money! Tony -- Tony Roberts PP-ASEL VFR OTT Night Cessna 172H C-GICE In article , "Jim Burns" wrote: A friend of mine has a 12v Garmin 430 that simply does not pick up the satellites. It worked fine about 3 weeks ago (the last time he flew) but now it fails to find any satellite signals. One avionics tech said that it had "lost it's almanac" and to pull it out and let it sit for a couple hours and it should pick up the satellites and work fine. No such luck. All power and antenna connections are good and nothing has happened to the airplane or the equipment since it flew last. Any ideas? Anybody ever hear of such a thing? Thanks, Jim |
#15
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"BTIZ" writes:
But VORs only receive, so how would the VOR disrupt the GPS? There is no such thing as a pure receiver [1] at least in avionics. Each receiver has one or more 'local oscillators' within. They leak a little. If that leakage is in the wrong place at the wrong time...it can get into other systems such as GPS. "EMC" -- electromagnetic compatibility is a major issue any place you have multiple emitters/receivers. Such problems can be hell to narrow down. My FAAfriend talked about the Mode S system being tested [ISTM it was on a FAA/NASA 757..] that would crap out for a ~minute right before each landing. Seems when the nosewheel gear-door would open during gear transit & that would bounce some radar altimeter RF back into into the xponder antenna.... [1] Let's skip TRF's and other exotics... -- A host is a host from coast to & no one will talk to a host that's close........[v].(301) 56-LINUX Unless the host (that isn't close).........................pob 1433 is busy, hung or dead....................................20915-1433 |
#16
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2 corroded connectors limited voltage to the antenna.
Lesson learned: Just because it worked yesterday and nothing is visibly wrong with your cables and connectors doesn't mean that they aren't the culprit! CHEAP lesson learned! My friend breathed a huge sigh of relief when they said there wasn't anything wrong with the 430 itself. Jim "Jim Burns" wrote in message ... A friend of mine has a 12v Garmin 430 that simply does not pick up the satellites. It worked fine about 3 weeks ago (the last time he flew) but now it fails to find any satellite signals. One avionics tech said that it had "lost it's almanac" and to pull it out and let it sit for a couple hours and it should pick up the satellites and work fine. No such luck. All power and antenna connections are good and nothing has happened to the airplane or the equipment since it flew last. Any ideas? Anybody ever hear of such a thing? Thanks, Jim |
#17
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tony roberts wrote:
It happened to me with my 196. Finally discovered the problem. The plane had been in the avionics shop and while there they had dialed a new frequency into the VOR (don't remember what it was now). After spending lots of time searching and testing a friend told me to try switching off all of the avionics - and the gps came back. Turn on the VOR - lose the GPS! After tuning the VOR back to a local frequency the problem disappeared. Worth a try before you start spending money! Good idea. I should have thought of that. Happens with my handheld, too, interference from my KX-155 when the NAV side is tuned to certain frequencies. I think KX-155 is notorious for producing RFI. If the GPS is an IFR approved installation, they're supposed to check for that as part of the approval, but who knows. Worth a try. |
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