X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Wed, 04 Jan 2012 16:38:21 -0500 Message-ID: X-Original-Return-Path: Received: from p3plex1out01.prod.phx3.secureserver.net ([72.167.180.17] verified) by logan.com (CommuniGate Pro SMTP 5.4.3) with SMTP id 5337395 for lml@lancaironline.net; Wed, 04 Jan 2012 14:02:02 -0500 Received-SPF: none receiver=logan.com; client-ip=72.167.180.17; envelope-from=pete@leapfrogventures.com Received: (qmail 12323 invoked from network); 4 Jan 2012 19:01:28 -0000 Received: from unknown (HELO smtp.ex1.secureserver.net) (72.167.180.47) by p3plex1out01.prod.phx3.secureserver.net with SMTP; 4 Jan 2012 19:01:28 -0000 Received: from P3PW5EX1MB14.EX1.SECURESERVER.NET ([10.6.135.86]) by P3PW5EX1HT005.EX1.SECURESERVER.NET ([72.167.180.134]) with mapi; Wed, 4 Jan 2012 12:01:05 -0700 From: "pete@leapfrogventures.com" X-Original-To: "bronnenmeier@GROBSYSTEMS.COM" , "lml@lancaironline.net" X-Original-Date: Wed, 4 Jan 2012 11:56:37 -0700 Subject: RE: 4P com issues Thread-Topic: 4P com issues Thread-Index: AczK0A0xOoQ1bMz9TmG9TnvzfgVDHAAQdqfw X-Original-Message-ID: <2A14E6258A8534418F5498D73CCA51EFA8F0CA9D@P3PW5EX1MB14.EX1.SECURESERVER.NET> References: In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: acceptlanguage: en-US Content-Type: multipart/alternative; boundary="_000_2A14E6258A8534418F5498D73CCA51EFA8F0CA9DP3PW5EX1MB14EX1_" MIME-Version: 1.0 --_000_2A14E6258A8534418F5498D73CCA51EFA8F0CA9DP3PW5EX1MB14EX1_ Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable I had serious comm issues on my ES-P as well. It turned out my LED positio= n lights were basically acting like radio transmitters. I ended up adding = filters on the lines from the constant current source to the LEDs and addin= g faraday cages to them to eliminate the problem. I suggest you try turning off each of the electrical items in the plane whe= n you are getting the static and see if it gets better. Turn off Squelch s= o you can hear the background noise. This will determine if the problem is= due to one of your other electrical devices rather than being an antenna i= ssue. You can probably do this on the ground by turning off squelch and se= eing if any of the electrical items increase the background noise level. Pete From: bronnenmeier@GROBSYSTEMS.COM [mailto:bronnenmeier@GROBSYSTEMS.COM] Sent: Tuesday, January 03, 2012 12:03 PM To: lml@lancaironline.net Subject: 4P com issues Dear subscribers, My com radio is not working as it should. In some areas it is working perfe= ct. In other areas it does not work well. It seems to be worse at high alti= tude/high speeds and along the shore lines or over the great lakes. It is p= ossible that I can barely read the controller and 20 miles further it is de= cent. On the ground or around an airport it always works ok. Sometimes I ge= t a lot of static noise (depending on the airport). Sometimes the controlle= r sounds like he would talk out of an helicopter. I am using the bose head = sets. I have metallic paint. I got static wicks - all grounded well. I got a Garm= in GNS530W, a Garmin GNC250XL and a Garmin GMA340 Com Panel (see pic) I got the following antennas: - VOR (in the fiberglass wing tip internally) - never had an issue - transponder (wing root externally) - never had an issue - marker (externally under the 0 of the N# - see pic) - never had = an issue - GPS1 (internally in vertical stab. ) works ok - if I do two roll= s in a row the GPS loses signal - other than that no issues - GPS2 (internally in vertical stab.) works fine - COM (internally in vertical stab.) - I don't know exactly where = it is (was already in when I got the plane) but I get the cable out of the = vert. stab. so I guess it must be in there somewhere. The COM antenna gets split with a duplexer for the GPS1 and GPS2 COM input I assume that my radio problems are related to the metallic paint and the c= arbon bottom of the tail /elevator the shield the antenna please tell me if= you have a different opinion. All my antenna cables are split at a little interface plate behind the pane= l (see pic). It is fairly easy to disconnect and reconnect the cables. My plan of action is (please feel free to tell me if I am talking nonsense) - Remove the marker antenna on the belly (I never use the marker s= ignal on an ILS, I monitor the GPS 530 for my location and distance to way = points, I would not notice if I lose this function) - Place an external COM antenna at the location of the marker ante= nna (I got about 1sqft of aluminum shield on the inside of the plane there = - I would need a recommendation for which antenna to pick) - Reconnect the antenna cables at my interface plate: COM1 uses ne= w external COM antenna (old marker antenna), COM2 uses existing internal an= tenna, the marker would have no antenna anymore - I would leave the duplexer in there for now and use only one out= put for the COM2 - I would remove the duplexer later it everything works fi= ne - The COM1 input would be connected directly to the antenna withou= t the duplexer Thanks for your help Ralf --_000_2A14E6258A8534418F5498D73CCA51EFA8F0CA9DP3PW5EX1MB14EX1_ Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

I had serious comm issues on my ES-P as well.  It turned o= ut my LED position lights were basically acting like radio transmitters.&nb= sp; I ended up adding filters on the lines from the constant current source= to the LEDs and adding faraday cages to them to eliminate the problem.

&nb= sp;

I sugg= est you try turning off each of the electrical items in the plane when you = are getting the static and see if it gets better.  Turn off Squelch so= you can hear the background noise.  This will determine if the proble= m is due to one of your other electrical devices rather than being an anten= na issue.  You can probably do this on the ground by turning off squel= ch and seeing if any of the electrical items increase the background noise = level.

 

Pete

 

From: bronnenmeier@GROBSYSTEMS.COM [mailto:bronnenmeier@GROB= SYSTEMS.COM]
Sent: Tuesday, January 03, 2012 12:03 PM
To:<= /b> lml@lancaironline.net
Subject: 4P com issues

 

Dear subscribers,

 =

My com radio is not working as it should. In some = areas it is working perfect. In other areas it does not work well. It seems= to be worse at high altitude/high speeds and along the shore lines or over= the great lakes. It is possible that I can barely read the controller and = 20 miles further it is decent. On the ground or around an airport it always= works ok. Sometimes I get a lot of static noise (depending on the airport)= . Sometimes the controller sounds like he would talk out of an helicopter. = I am using the bose head sets.

&nbs= p;

I have metallic paint. I got static wicks = – all grounded well. I got a Garmin GNS530W, a Garmin GNC250XL and a = Garmin GMA340 Com Panel (see pic)

&= nbsp;

I got the following antennas:

-      &nbs= p;   VOR (in the fiberglass wing tip inte= rnally) – never had an issue

-          transponder (wing root externally) – never had an issue<= /o:p>

-      =     marker (externally under the 0 o= f the N# - see pic) – never had an issue

-          GPS1 (internally in vertical stab. ) works ok – i= f I do two rolls in a row the GPS loses signal – other than that no i= ssues

-    &= nbsp;     GPS2 (internally in v= ertical stab.) works fine

-&nb= sp;         COM (internally in vertical stab.) – I don’t know exactly wher= e it is (was already in when I got the plane) but I get the cable out of th= e vert. stab. so I guess it must be in there somewhere.

 

The COM antenna g= ets split with a duplexer for the GPS1 and GPS2 COM input

 

I assume that m= y radio problems are related to the metallic paint and the carbon bottom of= the tail /elevator the shield the antenna please tell me if you have a dif= ferent opinion.

 

All my antenna cables are split at a little interface pla= te behind the panel (see pic). It is fairly easy to disconnect and reconnec= t the cables.

 

My plan of action is (please feel free to tell me if I am t= alking nonsense)

-  &n= bsp;       Remove the= marker antenna on the belly (I never use the marker signal on an ILS, I mo= nitor the GPS 530 for my location and distance to way points, I would not n= otice if I lose this function)

-          Place an external COM antenna at the location of the marker antenna (I= got about 1sqft of aluminum shield on the inside of the plane there - I wo= uld need a recommendation for which antenna to pick)

-         = ; Reconnect the antenna cables at my interface plat= e: COM1 uses new external COM antenna (old marker antenna), COM2 uses exist= ing internal antenna, the marker would have no antenna anymore

-       = ;   I would leave the duplexer in there f= or now and use only one output for the COM2 – I would remove the dupl= exer later it everything works fine

-          <= ![endif]>The COM1 input would be connected directly to the antenna without = the duplexer

 

Thanks for your help

 

Ralf

 

 

 

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