Matronics Email Lists :: View topic - Right Angle BNC Fittings

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

Right Angle BNC Fittings

Matronics Email Lists Forum Index -> AeroElectric-List

View previous topic :: View next topic

Author Message

Michael Wynn

Joined: 10 Jan 2006
Posts: 148
Location: San Ramon, CA

Posted: Sat Oct 23, 2010 9:09 am Post subject: Right Angle BNC Fittings

Hi all,

  

 I am wiring in my com and transponder antennae.  The wiring would be a  little more elegant with a right angle connector on the antenna.  B&C  markets a right angle fitting:

  

 http://www.bandc.biz/bncrightangleadapter.aspx

 That runs about six bucks.  Aircraft Spruce has a right angle  fitting

 http://www.aircraftspruce.com/catalog/elpages/bncrfconnector.php

 that runs about $46.  

  

 The question is, is there a significant dB loss using B&C's right angle  adaptor as opposed to the right angle fitting from ACS?

  

 Thanks

 

Michael  Wynn

RV 8 Finishing

San Ramon, CA

  [quote][b]

_________________
Michael Wynn
RV 8
San Ramon, CA

jdabney(at)rice.edu
Guest

Posted: Sat Oct 23, 2010 10:06 am Post subject: Right Angle BNC Fittings

Michael,

     

     I've had good results with the right angle connectors from Stein:

     

     http://www.steinair.com/connectors.htm

     

     Jim Dabney

     

     On 10/23/2010 12:06 PM, MLWynn(at)aol.com (MLWynn(at)aol.com) wrote:     [quote]                              Hi all,

          

         I am wiring in my com and transponder antennae.  The wiring           would be a little more elegant with a right angle connector on           the antenna.  B&C markets a right angle fitting:

          

         http://www.bandc.biz/bncrightangleadapter.aspx

         That runs about six bucks.  Aircraft Spruce has a right           angle fitting

         http://www.aircraftspruce.com/catalog/elpages/bncrfconnector.php

         that runs about $46.  

          

         The question is, is there a significant dB loss using           B&C's right angle adaptor as opposed to the right angle           fitting from ACS?

          

         Thanks

         

             Michael Wynn

             RV 8 Finishing

             San Ramon, CA

               	  Quote: 	
		  

	
     [b]

Allen Fulmer

Joined: 10 Jan 2006
Posts: 79
Location: Alexander City, AL

Posted: Sat Oct 23, 2010 10:33 am Post subject: Right Angle BNC Fittings

I “split the difference” with SteinAir for $17.50: “3 Piece 90 Degree Right Angle Male BNC Crimp Connector for RG-400 & RG-58 Coax Cable. Uses the same crimper as standard BNC's.”  

   

Note that it is a crimp connector whereas B&C’s is female to male right angle.  You will have one extra BNC connector to complete the connection.  

   

Allen Fulmer  

RV7 Cowling  

       

From: owner-aeroelectric-list-server(at)matronics.com [mailto:owner-aeroelectric-list-server(at)matronics.com] On Behalf Of MLWynn(at)aol.com

 Sent: Saturday, October 23, 2010 12:06 PM

 To: aeroelectric-list(at)matronics.com

 Subject: Right Angle BNC Fittings  

  

  

     

Hi all,  

    

   

    

I am wiring in my com and transponder antennae.  The wiring would be a little more elegant with a right angle connector on the antenna.  B&C markets a right angle fitting:  

    

   

    

http://www.bandc.biz/bncrightangleadapter.aspx  

    

That runs about six bucks.  Aircraft Spruce has a right angle fitting  

    

http://www.aircraftspruce.com/catalog/elpages/bncrfconnector.php  

    

that runs about $46.    

    

   

    

The question is, is there a significant dB loss using B&C's right angle adaptor as opposed to the right angle fitting from ACS?  

    

   

    

Thanks  

    



 Michael Wynn

 RV 8 Finishing

 San Ramon, CA  

   	  Quote: 	
		    http://www.matronics.com/Navigator?AeroElectric-List 	
0 	  Quote: 	
		   	
1 	  Quote: 	
		   	
2 	  Quote: 	
		   	
3 	  Quote: 	
		   	
4 	  Quote: 	
		   	
5 	  Quote: 	
		   	
6 	  Quote: 	
		   	
7 	  Quote: 	
		   	
8 	  Quote: 	
		   	
9

       [quote][b]

_________________
RV7 QB Fuselage
Eggenfellner H6 on orde
N808AF reserved
Alexander City, AL

Bill & Sue

Joined: 10 Jan 2006
Posts: 48
Location: Malvern, Worcs. UK (Defford, Croft Farm)

Posted: Sun Oct 24, 2010 2:19 am Post subject: Re: Right Angle BNC Fittings

Michael,



In a word: No.



Using a right angle adapter (or  a right angle plug) won't make any detectable difference, so use whatever is convenient.

The ACS price seems rather alarming -your local electronics supplier should be able to come up with something for a lot less. Here in the UK my local supplier lists suitable adaptors and plugs from (the equivalent of) a couple of dollars...



Even top price ones like this:



http://uk.rs-online.com/web/search/searchBrowseAction.html?method=getProduct&R=7122920&cm_vc=prev_uk



are still a lot less, which is quite surprising as I often order from ACS as the price and availability is vastly better than I can get in the UK even with the transport and tax included.



One thing to watch; whether you choose a a new plug or an adapter make sure you get the 50 ohm version. RF standard is 50 Ohm, but Video uses an almost identical 75 ohm connector with a slightly smaller inner pin.



Hope that helps

Bill

BobsV35B(at)aol.com
Guest

Posted: Sun Oct 24, 2010 5:36 am Post subject: Right Angle BNC Fittings

Good Morning Bill,

  

 That which you have shown is, as you say, an adapter. The higher priced  version is a right angle connector, not an adapter.

  

 The adapter has a slightly higher, though still minimal, loss  involved. It means that there are two connections involved in lieu of one and  the right angle connector generally has a slightly smaller profile than does a  connector and an adapter.

  

 Make any sense at all?

  

 Happy Skies,

  

 Old Bob

  

  In a message dated 10/24/2010 5:26:05 A.M. Central Daylight Time,  Billandsue(at)billbell.co.uk writes:

  	  Quote: 	
		  -->    AeroElectric-List message posted by: "Bill & Sue"    <Billandsue(at)billbell.co.uk>



Michael,



In a word:    No.



Using a right angle adapter (or  a right angle plug) won't    make any detectable difference, so use whatever is convenient.

The    ACS price seems rather alarming -your local electronics supplier should be    able to come up with something for a lot less. Here in the UK my local    supplier lists suitable adaptors and plugs from (the equivalent of) a couple    of dollars...



Even top price ones like    this:



http://uk.rs-online.com/web/search/searchBrowseAction.html?method=getProduct&R=7122920&cm_vc=prev_uk



are    still a lot less, which is quite surprising as I often order from ACS as the    price and availability is vastly better than I can get in the UK even with the    transport and tax included.



One thing to watch; whether you choose a a    new plug or an adapter make sure you get the 50 ohm version. RF standard is 50    Ohm, but Video uses an almost identical 75 ohm connector with a slightly    smaller inner pin.



Hope that  helps

Bill



	


  [quote][b]

Michael Wynn

Joined: 10 Jan 2006
Posts: 148
Location: San Ramon, CA

Posted: Sun Oct 24, 2010 7:29 am Post subject: Right Angle BNC Fittings

Thanks for everyone's input on this.  I cruising the aeroelectric  site, I found that Bob N has an instruction sheet on using adaptors to make a  permanent right angle connector:

  

 http://www.aeroelectric.com/articles/BNC_Rt_Angle/BNC_Rt_Angle.html

  

 I can't imagine he would post this unless it was a perfectly viable  approach to the problem.

  

 Regards,



Michael Wynn

RV 8 Finishing

San Ramon,  CA

  [quote][b]

_________________
Michael Wynn
RV 8
San Ramon, CA

nuckolls.bob(at)aeroelect
Guest

Posted: Sun Oct 24, 2010 9:50 am Post subject: Right Angle BNC Fittings

At 10:25 AM 10/24/2010, you wrote:

  	  Quote: 	
		   Thanks for everyone's input on this.  I cruising the aeroelectric site, I found that Bob N has an instruction sheet on using adaptors to make a permanent right angle connector:

  

  http://www.aeroelectric.com/articles/BNC_Rt_Angle/BNC_Rt_Angle.html 

  

 I can't imagine he would post this unless it was a perfectly viable approach to the problem. 	


    It's one approach that tolerates an extra joint in the

    system . . . a low risk decision. It also exploits

    ready availability of commercial off the shelf parts.



 

   Bob . . .    [quote][b]

Bill & Sue

Joined: 10 Jan 2006
Posts: 48
Location: Malvern, Worcs. UK (Defford, Croft Farm)

Posted: Mon Oct 25, 2010 7:12 am Post subject: Re: Right Angle BNC Fittings

Bob, 

 

Yes it makes sense and of course you are quite right about the extra loss, but I challenge anyone to measure it at the frequencies concerned, let alone tell any difference in practice (we are talking about the equivalent of perhaps a few inches of cable).

 

Right angle connectors are harder to come by, but over here RS sell them for less than the price of the adapters.



The adapters are a little more bulky, but the most serious downside is the weight which will raise your stall speed by around 0.001%!

Cheers



Bill

 	  BobsV35B(at)aol.com wrote: 	
		  Good Morning Bill,

  

 That which you have shown is, as you say, an adapter. The higher priced  version is a right angle connector, not an adapter.

  

 The adapter has a slightly higher, though still minimal, loss  involved. It means that there are two connections involved in lieu of one and  the right angle connector generally has a slightly smaller profile than does a  connector and an adapter.

  

 Make any sense at all?

  

 Happy Skies,

  

 Old Bob

Speedy11(at)aol.com
Guest

Posted: Tue Oct 26, 2010 7:13 am Post subject: Right Angle BNC Fittings

For what it's worth, here's one data point for you.

 I used a 90 degree BNC adapter between my transponder antenna and the coax  and the transponder would not work.  It was an adapter, not a  connector.  I switched to a straight coax to antenna connection (just  barely had enough room) and it worked fine.

 I have since sworn off ever again using a 90 degree BNC adapter.

 Stan Sutterfield

  [quote][b]

nuckolls.bob(at)aeroelect
Guest

Posted: Wed Oct 27, 2010 1:05 pm Post subject: Right Angle BNC Fittings

At 10:08 AM 10/26/2010, you wrote:

  	  Quote: 	
		   For what it's worth, here's one data point for you.

 I used a 90 degree BNC adapter between my transponder antenna and the coax and the transponder would not work.  It was an adapter, not a connector.  I switched to a straight coax to antenna connection (just barely had enough room) and it worked fine.

 I have since sworn off ever again using a 90 degree BNC adapter. 	


    But Stan, there have been gazillions of right

    angle adapters produced and no doubt successfully

    used in as many situations. The fact that you

    suffered one instance of a failed installation

    would be worthy of a failure analysis. There

    is probably a logical cause for the effect that

    has nothing to do with whether any particular

    combination of connectors was installed.



 

   Bob . . .    [quote][b]

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