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radio noise after installing plug conversion kit

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jan.mevis(at)informavia.b
Guest

Posted: Thu Feb 22, 2007 1:25 pm Post subject: radio noise after installing plug conversion kit

Dear Mark,



THANKS A LOT! Your advise helped me solve the problem : the BNC-connector of

the antenna cable got disassembled! So I HEREBY CONFIRM : THE PLUG

CONVERSION KIT CABLES ARE NOT THE SOURCE OF THE RADIO NOISE IN MY PLANE!



I was mislead because my radio showed the noise problem after I did the plug

conversion, so it was logical to assume that there was a correlation. For

one reason or another the antenna cable could move around a bit. And all

things that are not well strapped in a Yak will cause problems sooner or

later. I did the test as you suggested, and bingo, problem diagnosed !



Once again, thanks a lot!



Jan Mevis

RA2005K

YK50



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mark.bitterlich(at)navy.m
Guest

Posted: Thu Feb 22, 2007 2:36 pm Post subject: radio noise after installing plug conversion kit

My pleasure Jan, maybe someday I can come over and share dinner with

you.  Hope I get the chance someday in any case! 



Take care and I am really happy that you found the problem.  We got

lucky with this one!   



Mark Bitterlich



 

--

viperdoc(at)mindspring.co
Guest

Posted: Thu Feb 22, 2007 2:52 pm Post subject: radio noise after installing plug conversion kit

Jan,

Have been lurking and probably should have added something to this issue

earlier. I did the plug conversion on my 50 also. Had a lot of

interference/ "buzzing" on the radio. Could only get good signal (clear

transmissions) from A/C close by or near the AF. Traced it down to the

Russian radio cable and B/C connectors. I changed out to R 146 cable and

new B&C connectors with marked improvement. I have a Becker VHF installed

since I had pulled the Briz radio over a year ago. Had no problems until

after I did the plug conversion. I had already changed out the antenna from

the Russian so I knew it was not a West vs East technology issue.. or so I

thought. I had continued to use the Ru radio cable with new B&C connectors.

Once I changed the RU cable for R 146 all improved. 

Now I have a buzz and pop at the ends of transmissions. If I turn the

automatic squelch off I have a continuous buzzing that is only present with

the engine running. It is not associated with throttle changes. So guess I

am now going to add a filter to the DC line into the radio to see if that

fixes it. 

Doc

 	  Quote: 	
		   [Original Message]

 From: Jan Mevis <jan.mevis(at)informavia.be>

 To: <yak-list(at)matronics.com>

 Date: 2/22/2007 3:53:21 PM

 Subject: radio noise after installing plug conversion kit



 



 Dear Mark,



 THANKS A LOT! Your advise helped me solve the problem : the BNC-connector

of
	


 	  Quote: 	
		   the antenna cable got disassembled! So I HEREBY CONFIRM : THE PLUG

 CONVERSION KIT CABLES ARE NOT THE SOURCE OF THE RADIO NOISE IN MY PLANE!



 I was mislead because my radio showed the noise problem after I did the

plug
	


[quote] conversion, so it was logical to assume that there was a correlation. For

 one reason or another the antenna cable could move around a bit. And all

 things that are not well strapped in a Yak will cause problems sooner or

 later. I did the test as you suggested, and bingo, problem diagnosed !



 Once again, thanks a lot!



 Jan Mevis

 RA2005K

 YK50



 --

jan.mevis(at)informavia.b
Guest

Posted: Thu Feb 22, 2007 10:47 pm Post subject: radio noise after installing plug conversion kit

That would be really great. If you come to Europe please do. My mobile

number is on my website www.informavia.eu We're five Yak pilots in Temploux,

Namur (Belgium) and we're having a lot of fun. I've started another website

www.yakrobatic.eu 



All the best !



Jan Mevis

+32 478 213400



--

jan.mevis(at)informavia.b
Guest

Posted: Thu Feb 22, 2007 11:10 pm Post subject: radio noise after installing plug conversion kit

Doc,



It is as if you've got to change it all : either the whole Russian radio

system, or a complete western system. Maybe a problem with impedance changes

etc? I had to modify the microphone connections so that I could use a Dave

Clark headset (the Russian push-to-talk system did not put one connector of

the microphone to ground when speaking).



My Briz (which I put in place for a Ziabrik) works reasonably well. But I

had the trouble putting a BNC connector on the Russian antenna cable (the

ziabrik needed a very small connector, comparable to what is used in WIFI

equipment). Unfortunately until now I could not find a connector that really

fits. That's also the reason why the connector got damaged on my plane after

5 months of intensive use. It's an absolute coincidence that this happened

just after changing the plug cables.

 

But I do also only have clear transmissions when I'm close by or near other

radio stations. So I 'd better change the whole antenna system, I fear.



Thanks for the input! This is also very helpful!



All the best,



Jan



--

dsavarese(at)elmore.rr.co
Guest

Posted: Fri Feb 23, 2007 5:06 am Post subject: radio noise after installing plug conversion kit

Thanks Jan for posting the solution.  I'm sure it will help others in the 

future.

Dennis



---

discrab(at)earthlink.net
Guest

Posted: Fri Feb 23, 2007 7:27 am Post subject: radio noise after installing plug conversion kit

Did my SU-29 about a year ago with auto wires and plugs.  Had KX-135 and absolutely no noise before or after.  Installed a GNS430 (Yes, inverted approaches!!!) flew first yesterday.  Beautiful performance.  Lovin' it

Rick b



--

viperdoc(at)mindspring.co
Guest

Posted: Fri Feb 23, 2007 6:35 pm Post subject: radio noise after installing plug conversion kit

Rick,

Just remember to push not pull at the MAP!

Doc

 	  Quote: 	
		   [Original Message]

 From: Rick Basiliere <discrab(at)earthlink.net>

 To: <yak-list(at)matronics.com>

 Date: 2/23/2007 9:36:26 AM

 Subject: RE: radio noise after installing plug conversion kit



 



 Did my SU-29 about a year ago with auto wires and plugs.  Had KX-135 and

absolutely no noise before or after.  Installed a GNS430 (Yes, inverted
	


approaches!!!) flew first yesterday.  Beautiful performance.  Lovin' it

[quote] Rick b



 --

viperdoc(at)mindspring.co
Guest

Posted: Fri Feb 23, 2007 6:43 pm Post subject: radio noise after installing plug conversion kit

Jan,

Hope you do not have to do that. I suspect my issues were coincidental also.

Doc

 	  Quote: 	
		   [Original Message]

 From: Jan Mevis <jan.mevis(at)informavia.be>

 To: <yak-list(at)matronics.com>

 Date: 2/23/2007 1:19:00 AM

 Subject: RE: radio noise after installing plug conversion kit



 



 Doc,



 It is as if you've got to change it all : either the whole Russian radio

 system, or a complete western system. Maybe a problem with impedance

changes
	


 	  Quote: 	
		   etc? I had to modify the microphone connections so that I could use a Dave

 Clark headset (the Russian push-to-talk system did not put one connector

of
	


 	  Quote: 	
		   the microphone to ground when speaking).



 My Briz (which I put in place for a Ziabrik) works reasonably well. But I

 had the trouble putting a BNC connector on the Russian antenna cable (the

 ziabrik needed a very small connector, comparable to what is used in WIFI

 equipment). Unfortunately until now I could not find a connector that

really
	


 	  Quote: 	
		   fits. That's also the reason why the connector got damaged on my plane

after
	


 	  Quote: 	
		   5 months of intensive use. It's an absolute coincidence that this happened

 just after changing the plug cables.

  

 But I do also only have clear transmissions when I'm close by or near

other
	


[quote] radio stations. So I 'd better change the whole antenna system, I fear.



 Thanks for the input! This is also very helpful!



 All the best,



 Jan



 --

discrab(at)earthlink.net
Guest

Posted: Sun Feb 25, 2007 12:14 pm Post subject: radio noise after installing plug conversion kit

Roger! Roger



--

mark.bitterlich(at)navy.m
Guest

Posted: Mon Feb 26, 2007 9:26 am Post subject: radio noise after installing plug conversion kit

Doc, your buzzing sound is more than likely the tach generator.  



Pull the cannon plug off at the tach gen and try it with it disconnected

completely.  



If that helps, check the shield connection AT the tach gen plug closely.

Mark Bitterlich 



P.s.  Are you sure you did not mean RG-142b/u ??



--

mark.bitterlich(at)navy.m
Guest

Posted: Mon Feb 26, 2007 9:35 am Post subject: radio noise after installing plug conversion kit

Jan, the BNC connection on the back of the Russian radio is NOT really a

BNC connector.  It is not a STANDARD BNC connector is what I SHOULD say,

because it is in fact a bayonet type as you already clearly know.  In

order to get a standard BNC type to fit properly, you need to use a

jewelers file and where the detect is on the connector that is on the

coax, make the detent go in more deeply, then file off the ridge created

when you do that.  The result is that the connector will not take a pair

of pliers to get on and off.  



A better solution would be to simply solder in a standard female BNC

bulkhead connector to the radio itself.  I would replace the coax with

RG-142B/U  Teflon Dielectric, Double Shielded coax.   If you have

difficulty in finding all this, I can send you a kit... You pay

shipping!  



Mark





--

viperdoc(at)mindspring.co
Guest

Posted: Mon Feb 26, 2007 11:37 am Post subject: radio noise after installing plug conversion kit

Correct R-142. 

Had not thought about the Tach generator dispite reading you post earlier.

Got to wrapped around another axel!

Thanks,

Doc

 	  Quote: 	
		   [Original Message]

 From: Bitterlich, Mark G CIV Det Cherry Point, MALS-14 64E

<mark.bitterlich(at)navy.mil>
	


 	  Quote: 	
		   To: <yak-list(at)matronics.com>

 Date: 2/26/2007 11:38:36 AM

 Subject: RE: radio noise after installing plug conversion kit



 

MALS-14 64E" <mark.bitterlich(at)navy.mil>
	


[quote]

 Doc, your buzzing sound is more than likely the tach generator.  



 Pull the cannon plug off at the tach gen and try it with it disconnected

 completely.  



 If that helps, check the shield connection AT the tach gen plug closely.

 Mark Bitterlich 



 P.s.  Are you sure you did not mean RG-142b/u ??



 --

jan.mevis(at)informavia.b
Guest

Posted: Mon Feb 26, 2007 12:08 pm Post subject: radio noise after installing plug conversion kit

Thanks Mark! 



I've ordered some good antenna cable (double shielded according to the

specs) and a set of quality BNC connectors. And then I'll follow your

advise: either the female connector soldered on the radio, or adapting a

male connector. I also consider replacing the antenna, but only after

testing the actual system with the new antenna cable + connectors. In the

future I might replace the Briz by a western comm/GPS device. 

We've also another bureaucratic burden here in Europe : the transponder

issue. Sooner or later we will be forced to install this (even the S type

I'm afraid). So I'm thinking about making a sort of console in front of the

cockpit. 



Best regards,



Jan

--

viperdoc(at)mindspring.co
Guest

Posted: Mon Feb 26, 2007 2:15 pm Post subject: radio noise after installing plug conversion kit

Jan,

You can remove the Briz Radio and Mounts. Sacrafice you carb temp gauge and

use that 2 1/2 inch hole for your transponder (if you use a Becker unit).

Cut a second hole in you panel (2.5 inch) next to the carb temp hole and

mount a Becker 760 Com. Now if you want a GPS, you can use the old Briz

mount site to install the GPS there.  That is the way I did it in my 50

atleast. Clean, out of the way and plenty of room left to do what ever I

need to do. 

Besides, what are you going to do with carb temp. The 50 does not have carb

heat. Atleast mine does not.  If you absolutely have to have OAT, then get

a Dynon D10. It has ten instruments in one. You get to get rid of the

inverter behind your seat and the RU ADI goes. The Dynon fits right in the

ADI slot. You will have to fabricate a square mount to fill the hole left

by the larger ADI. You now have a great HUD with mag heading across the top

of the HUD something you do not have with your current panel. If you do not

care for Dynon and want a similar instrument that has built in GPS and

moving map, then there is also Blue Mountain. I do not have any experience

with that unit and I have heard both good and bad about it.

Just a few thoughs on how to spend  a few Euros.

Doc 

 	  Quote: 	
		   [Original Message]

 From: Jan Mevis <jan.mevis(at)informavia.be>

 To: <yak-list(at)matronics.com>

 Date: 2/26/2007 2:18:30 PM

 Subject: RE: radio noise after installing plug conversion kit



 



 Thanks Mark! 



 I've ordered some good antenna cable (double shielded according to the

 specs) and a set of quality BNC connectors. And then I'll follow your

 advise: either the female connector soldered on the radio, or adapting a

 male connector. I also consider replacing the antenna, but only after

 testing the actual system with the new antenna cable + connectors. In the

 future I might replace the Briz by a western comm/GPS device. 

 We've also another bureaucratic burden here in Europe : the transponder

 issue. Sooner or later we will be forced to install this (even the S type

 I'm afraid). So I'm thinking about making a sort of console in front of

the
	


[quote] cockpit. 



 Best regards,



 Jan

 --

jan.mevis(at)informavia.b
Guest

Posted: Mon Feb 26, 2007 9:58 pm Post subject: radio noise after installing plug conversion kit

Thanks for the advise Doc. I think I'll use the place taken by the Briz

radio mount so that I can leave the instrument panel as original as

possible. 

Personally I do use the carburettor temperature indicator so that I have an

idea about the icing possibilities. Where I fly here in Europe, this icing

condition is present very often (high humidity, outside temperature between

0 and 5 degrees Celsius). One of my Yak 52 friends experienced it recently.



One thing is certain: I'll spend some money 



Jan



--

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