AirTalk.org Aviation discussions newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  ADF antenna          AirTalk.org Forum Index -> Owning Airplanes View previous topic :: View next topic   Author Message Dan Luke Guest Posted: Wed Aug 13, 2003 5:24 pm    Post subject: ADF antenna What is the proper length? Since my old one departed in flight, I have nothing to measure the new one against. -- Dan C172RG at BFM Back to top mikem Guest Posted: Wed Aug 13, 2003 10:44 pm    Post subject: Re: ADF antenna On Wed, 13 Aug 2003 12:24:41 -0500, "Dan Luke" <c172rgATbellsouthDOTnet> wrote: Quote: What is the proper length? Since my old one departed in flight, I have nothing to measure the new one against. Depends on the ADF. I have an installation manual for the Cessna ARC R546? which shows the correct length of the sense antenna from top of wing to the insulator. You can by a new stainless steel sense wire kit from Chief and others. MikeM Back to top Jim Weir Guest Posted: Thu Aug 14, 2003 12:29 am    Post subject: Re: ADF antenna It is pretty loose. The AGC makes up for a multitude of length errors. I generally start out at 72" and go from there. Always worked for me. Jim mikem <mladejov (AT) CharleyEchoDelta (DOT) utah.edu> shared these priceless pearls of wisdom: ->On Wed, 13 Aug 2003 12:24:41 -0500, "Dan Luke" -><c172rgATbellsouthDOTnet> wrote: -> ->>What is the proper length? ->>Since my old one departed in flight, I have nothing to measure the new one ->>against. -> ->Depends on the ADF. I have an installation manual for the Cessna ARC ->R546? which shows the correct length of the sense antenna from top of ->wing to the insulator. You can by a new stainless steel sense wire kit ->from Chief and others. -> ->MikeM Jim Weir (A&P/IA, CFI, & other good alphabet soup) VP Eng RST Pres. Cyberchapter EAA Tech. Counselor http://www.rst-engr.com [email]jim (AT) rst-engr (DOT) com[/email] Back to top Ron Natalie Guest Posted: Thu Aug 14, 2003 1:48 pm    Post subject: Re: ADF antenna "Dan Luke" <c172rg (AT) bellSPAMsouth (DOT) net> wrote Quote: Why does it depend on the ADF? Wouldn't it be some fraction of an average wavelength for NDB frequencies? It's a very tiny fraction of teh NDB frequency wavelength, which is over 200 meters. The radio has to have some internal matching for the much shortened length. Back to top Display posts from previous: All Posts1 Day7 Days2 Weeks1 Month3 Months6 Months1 Year Oldest FirstNewest First         AirTalk.org Forum Index -> Owning Airplanes All times are GMT Page 1 of 1   Jump to: Select a forum Aviation----------------alt.aviationAviation safety EnhancementPlanes, gliders and flying in AustraliaAviation et pilotage (Français)rec.aviationAviation (Aerobatics)Hot air, gas balloons and airshipsHang-gliding, paragliding, foot-launched flightAircraft Design & BuildingInstrument Flight RulesAviation (Classifieds)Military AircraftNaval AviationAviation (Miscellaneous Topics)Owning AirplanesAviators (General Discussions)Aviation related productsAircraft RestorationHelicopters and rotary wing aircraftsFlight SimulationSailplanesAviation (Students)Light aircraftFlying related activities in the UK Airports----------------alt.airportsEdinburgh Airport Glasgow Airport Humberside Airport Luton Airport Aberdeen Airport Glasgow Prestwick Airport  You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum Powered by phpBB © 2001, 2006 phpBB Group SEO toolkit © 2004-2006 webmedic.