Matronics Email Lists :: View topic

Matronics Email Lists
Web Forum Interface to the Matronics Email Lists

Get Email Distribution Too! FAQ Search Memberlist Usergroups Register

Profile Log in to check your private messages Log in

Open squelch

Matronics Email Lists Forum Index -> AeroElectric-List

View previous topic :: View next topic

Author Message

tim2542(at)sbcglobal.net
Guest

Posted: Wed Jan 12, 2011 9:10 am Post subject: Open squelch

I have finished assembling my panel and everything is working fine 

except the squelch on the Icom A210 is open unless set to the highest 

level **or** I turn OFF my GRT displays. Either one of them ON opens the 

squelch.  The Garmin 430 does not have the same problem and I tested 

them both with the same antenna/coax connected to one my wings. Both 

radios receive fine. I have removed all connections to the radio not 

essential to testing, like the swap & serial lines as well as all 

connections to the audio panel, then just using the speaker output on 

the radio.  Also fed the radio from a separate 12V source. Nothing I 

have done has made any difference in the squelch setting. With the GRT's 

OFF I can set the squelch to level 4~5. With them ON it must be at 10 

(highest) and even then it will occasionally open.

My wings are stored overhead so the antenna is in fairly close proximity 

(8') and is horizontally polarized in it's present position. I dont 

think that should matter but I plan to try a different antenna today.

It seems the radio is just overly sensitive, but that is just speculation.

Single point ground per Bob's instrument panel ground bus. There are no 

shielded wires attached to it at this point except the speaker leads.

Any thoughts or comments are appreciated.

Tim Andres

- The Matronics AeroElectric-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?AeroElectric-List

nuckolls.bob(at)aeroelect
Guest

Posted: Wed Jan 12, 2011 8:44 pm Post subject: Open squelch

At 12:05 PM 1/12/2011, you wrote:




I have finished assembling my panel and everything is working fine 

except the squelch on the Icom A210 is open unless set to the highest 

level **or** I turn OFF my GRT displays. Either one of them ON opens 

the squelch.  The Garmin 430 does not have the same problem and I 

tested them both with the same antenna/coax connected to one my 

wings. Both radios receive fine. I have removed all connections to 

the radio not essential to testing, like the swap & serial lines as 

well as all connections to the audio panel, then just using the 

speaker output on the radio.  Also fed the radio from a separate 12V 

source. Nothing I have done has made any difference in the squelch 

setting. With the GRT's OFF I can set the squelch to level 4~5. With 

them ON it must be at 10 (highest) and even then it will occasionally open.



     See what effects, if any, are noted when

     you disconnect the antenna from the Icom.

It seems the radio is just overly sensitive, but that is just speculation.



    You can never have a radio that is "too sensitive".

    I MIGHT be poorly shielded or the GRT equipment

    may be overly generous with their radiated emissions.

    What, if any, are the DO160 test claims for the GRT

    equipment?



Single point ground per Bob's instrument panel ground bus. There are 

no shielded wires attached to it at this point except the speaker leads.



   Ground busses have no participation in the kind

   of symptoms you've described.

   Bob . . .

- The Matronics AeroElectric-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?AeroElectric-List

tim2542(at)sbcglobal.net
Guest

Posted: Wed Jan 12, 2011 9:54 pm Post subject: Open squelch

On 1/12/2011 7:40 PM, Robert L. Nuckolls, III wrote:

 	  Quote: 	
		  



     See what effects, if any, are noted when

     you disconnect the antenna from the Icom.



 Thanks Bob;

     When the antenna is disconnected the radio goes silent. I spoke 
	


with both Icom and GRT today.  At this point I'm going to leave it as is 

until

     I still have a problem after the panel is installed in the 

aircraft. If so GRT indicated they can install some filters on the video 

display that may help.



Tim

- The Matronics AeroElectric-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?AeroElectric-List

nuckolls.bob(at)aeroelect
Guest

Posted: Thu Jan 13, 2011 6:33 am Post subject: Open squelch

Thanks Bob;

     When the antenna is disconnected the radio goes silent. I spoke 

with both Icom and GRT today.  At this point I'm going to leave it as is until

     I still have a problem after the panel is installed in the 

aircraft. If so GRT indicated they can install some filters on the 

video display that may help.



   Interesting. I didn't mention it in my earlier

   post . . . but the LCD color display panels have

   cropped up a number of times before as potentially

   serious radiation antagonists. Sounds like GRT

   might not fare well in the DO160 qualifications

   tests.

   Bob . . .

- The Matronics AeroElectric-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?AeroElectric-List

Brantel

Joined: 23 Aug 2008
Posts: 53

Posted: Sat Feb 12, 2011 6:50 pm Post subject: Re: Open squelch

What firmware on the A210?



I ask because I just had mine updated to 1.53 and ever since I have had squelch issues.  I used to run mine at 3 and now even at 10 I have problems with open squelch all the time....



I think maybe ICom broke something with this revision...



To get the firmware #, hold in the freq swap button while turning on the power..

- The Matronics AeroElectric-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?AeroElectric-List

tim2542(at)sbcglobal.net
Guest

Posted: Sat Feb 12, 2011 8:26 pm Post subject: Open squelch

On 2/12/2011 6:50 PM, Brantel wrote:

 	  Quote: 	
		   



 What firmware on the A210?



 I ask because I just had mine updated to 1.53 and ever since I have had squelch issues.  I used to run mine at 3 and now even at 10 I have problems with open squelch all the time....



 I think maybe ICom broke something with this revision...



 To get the firmware #, hold in the freq swap button while turning on the power..

 I must have missed the rest of this thread, but I also have an A210  with squelch issues. I posted re: this a few weeks ago. If my GRT equipment is on I have to set the Icom at 10. I'm going to wait until it is all installed in the aircraft to see if there is really a problem or not. Meanwhile I just sent it in for the latest firmware upgrade. Evidently that may have some impact on the squelch from what I'm hearing.

Tim
	


 	  Quote:

- The Matronics AeroElectric-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?AeroElectric-List

Brantel

Joined: 23 Aug 2008
Posts: 53

Posted: Sun Feb 13, 2011 5:04 am Post subject: Re: Open squelch

The new firmware was suppose to fix the intercom squelch issues which it may do but in my case it seems they messed something up with the radio squelch....1.53 is what I have and it is the latest.  The radio squelch worked much better before in my case...

- The Matronics AeroElectric-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?AeroElectric-List

Brantel

Joined: 23 Aug 2008
Posts: 53

Posted: Sun Feb 13, 2011 7:54 am Post subject: Re: Open squelch

Tim,



Please visit http://www.icomamerica.com/en/contactusform.aspx?ContactType=TS and let them know about this so they might start creating a case on this one.

- The Matronics AeroElectric-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?AeroElectric-List

Display posts from previous:

	Matronics Email Lists Forum Index -> AeroElectric-List	All times are GMT - 8 Hours
Page 1 of 1

Jump to:

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
You cannot attach files in this forum
You can download files in this forum