GumpAir wrote:

mr scout wrote:I guess I am gonna have to some trouble some where so you guys got something else to talk about this techno s@#t is getting out of hand.

Hell Floyd, you got more computing power in that Commander that the first space shuttle did. Of course you gotta be able to find the on/off switch to make it work.

Gump

Now that we moved the beer holder next to the switch its much easier to find

GumpAir wrote:I found it...

viewtopic.php?f=13&t=2992&start=0&hilit=elt+gps

by MikeMl » Sun Oct 19, 2008 8:48 pm

GumpAir wrote:
....From about ten miles south of Troutdale in to the airport my satellite reception just goes away. Nothing. It's completely blind. Five miles north of Eugene and into the airport, same thing. Down in the Phoenix area I can tell you the exact spot on the ground between Goodyear and Stellar Airpark where the damn thing is gonna quit...



Disconnect the coax cable from the ELT antenna where it goes into the ELT and try your GPS again. If that fixes it, it is because high signal levels from very high power TV and FM transmitters couple into the ELT antenna, travel down the coax, mix and generate intermodulation products in the ELT's transistor output stage (even though it is unpowered), the intermod products travel back up the ELT coax, and then radiate off the ELT antenna to the GPS antenna, where they clobber the very low level GPS signal.

If you tell me that you are using one of the ELTs that have an antenna inside the cockpit, same deal; just leave it home for a test flight.

What kind of ELT do you have?

Never would I have thought a post about PIM (Passive Intermodulation) would come up on this board. I measure the intermodulation products to characterize materials at my day job Interesting stuff for sure; connectors are usually the main driver of PIM in high-power (think basestation) applications.

Flew...


....my Pitts and Skybolt hundreds of hours, all over the nation east of the Rockies....with a mag compass and sectional chart. The Pitts did not have an electrical system and I didn't even have a hand held radio. That was the most fun flying I ever did. Got older and lazy. Bought a Garmin 196 hand held back in 2000. I has taken me from coast to coast and border to border. Probably should get it updated someday!!

Gave my son an instrument checkride(keeping him current) yesterday...in our Maule, which is one lousy instrument platform. No autopilot. Flew a 2 hour instrument cross country plus 6 approaches. Had him do a VOR-A ,then a VOR circle to land(400 and 1), Backcourse LOC, fixed card ADF....then made it easy on him and let him shoot 2 ILS approaches(200 and 1/2.) Flew every one of them to minimums....dead on perfect and the kid has only flown 10 hours in the last year. Any dummy can follow the lines on a GPS. But I want to be sure that he knows how to do the basics....just in case.

Yeah I know....my mentors in their day.... flew lighted airways and four course low freq. ranges.... I never did. Guess some of them thought that I was a wimp growing up with ADF,VOR and ILS.

Bob