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

HT leads Correction

Matronics Email Lists Forum Index -> Yak-List

View previous topic :: View next topic

Author Message

tomjohnson(at)cox.net
Guest

Posted: Tue Mar 28, 2006 8:43 am Post subject: HT leads Correction

I should have been  more careful when I said "noise".

  

 My radios are  absolutely crystal clear 99.9% of the time

 Whoever installed  the GNC250 used -58 antenna wire and the existing Russian  antenna.

 Since installing the  "West Coast" version of the wire package and the phenolic mag cover seal I still  have perfect radio reception and transmission.

  

 Now. . what does  happen when VERY far away . . .from a VERY weak station you can hear a very  faint buzz in the background ONLY if the squelch is broken.

 So for instance when  trying to talk to MCAS Yuma from 50 miles north and they are coming in VERY  weakly and you manually break squelch . . . 

 you can hear this  faint buzz.

 That's all.   Not a big deal, and Dennis I would be surprised if you didn't find the same  thing on your kit, seeing as the wire is the same.

  

 In normal x-country,  formation, ACM (<--doesn't do that). . .you never know the  difference.

  

 Would be cool if the -142 got rid of that.   

 I have VERY low tolerance for anything but perfection in  radios.



 Tj

 ---------------------------

Thomas Johnson

Airpower  Insurance, LLC

36 West Ocotillo Road

Phoenix, AZ   85013-1235

Tel:  602-628-2701

Fax:  623-321-5843

E:   tomjohnson(at)cox.net

- The Matronics Yak-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?Yak-List

dsavarese(at)elmore.rr.co
Guest

Posted: Tue Mar 28, 2006 9:49 am Post subject: HT leads Correction

That makes better sense TJ.

 Dennis

  

 [quote]   ---

- The Matronics Yak-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?Yak-List

BitterlichMG(at)cherrypoi
Guest

Posted: Tue Mar 28, 2006 4:12 pm Post subject: HT leads Correction

The  142 might not get rid of it Tom, but it is a move in the right direction.   RG-58 should not be allowed in aircraft.  It is junk of the highest order.  

  

 Don't  you have any left from what I sent you for the GPS?

  

 Mark

  

  

 --

- The Matronics Yak-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?Yak-List

brian

Joined: 02 Jan 2006
Posts: 643
Location: Sacramento, California, USA

Posted: Tue Mar 28, 2006 5:25 pm Post subject: HT leads Correction

Bitterlich GS11 Mark G wrote:

 	  Quote: 	
		   The 142 might not get rid of it Tom, but it is a move in the right 

 direction.  RG-58 should not be allowed in aircraft.  It is junk of the 

 highest order.


	


Well, it depends on whose RG-52 you get. The good stuff has 97%

shielding with tinned braid. The cheap stuff has about 70% shielding and

copper braid. You get what you pay for.



Also, you have a choice of solid polyethylene or foamed polyethylene

dielectric. The foamed stuff is lower-loss and works better at first but

eventually absorbs moisture which increases loss. The foamed poly stuff

actually outperforms RG-142 initially.



I managed to find some surplus military RG-58 that is silver plated and

double shielded. Nice stuff, almost as nice as RG-142. I still have

about 100' of it and wouldn't hesitate to use it in wiring an aircraft.



-- 

Brian Lloyd                         361 Catterline Way

brian-yak at lloyd dot com          Folsom, CA 95630

+1.916.367.2131 (voice)             +1.270.912.0788 (fax)



I fly because it releases my mind from the tyranny of petty things . . .

- Antoine de Saint-Exupery

- The Matronics Yak-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?Yak-List

_________________
Brian Lloyd
brian-yak at lloyd dot com
+1.916.367.2131 (voice) +1.270.912.0788 (fax)

I fly because it releases my mind from the tyranny of petty things . . .
- Antoine de Saint-Exupery

BitterlichMG(at)cherrypoi
Guest

Posted: Tue Mar 28, 2006 5:45 pm Post subject: HT leads Correction

Mark Bitterlich wrote: 

 	  Quote: 	
		  > The 142 might not get rid of it Tom, but it is a move in the right  

> direction.  RG-58 should not be allowed in aircraft.  It is junk of the  

> highest order.   

Brian Lloyd replied: 

 	  Quote: 	
		  Well, it depends on whose RG-52 you get. The good stuff has 97% 

shielding with tinned braid. The cheap stuff has about 70% shielding and 

copper braid. You get what you pay for.   

It is very difficult to get quality RG-58 coax Brian, and I am sure you know that! [smile]  Even MILSPEC RG-58 is not advisable for use in aircraft.  On that note, let me add that a lot of companies producing GPS devices for aircraft specify that as a MINIMUM RG-142 be used, and they will not honor the warranty should you choose to use it.  But HEY.......   

 	  Quote: 	
		  Also, you have a choice of solid polyethylene or foamed polyethylene 

dielectric. The foamed stuff is lower-loss and works better at first but 

eventually absorbs moisture which increases loss. The foamed poly stuff 

actually outperforms RG-142 initially.   

Yes you do (have lots of choices).  The straight Poly E at 125 Mhz and 15 feet went up another .2 Db from .6 for RG-142 to .8 for RG-58.  I am glad you are not advising anyone to use foam Poly in an aircraft.  Talk about center conductor migration, not to mention moisture absorption. Junk....   

 	  Quote: 	
		  I managed to find some surplus military RG-58 that is silver plated and 

double shielded. Nice stuff, almost as nice as RG-142. I still have 

about 100' of it and wouldn't hesitate to use it in wiring an aircraft.   

Yeah, it is called RG-223 (not RG-5 and I would not hesitate to use it either, except that once again... in overly warm quarters, it will have a migrating center conductor. That is why we pulled it OUT of most new military aircraft.. if you need some more, let me know.     

Heck, we might as well go to Andrews SuperFlex Heliax.  :-0)   

Mark Bitterlich 

N50YK

- The Matronics Yak-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?Yak-List

brian

Joined: 02 Jan 2006
Posts: 643
Location: Sacramento, California, USA

Posted: Tue Mar 28, 2006 5:58 pm Post subject: HT leads Correction

Bitterlich GS11 Mark G wrote:

 	  Quote: 	
		   Yes you do (have lots of choices).  The straight Poly E at 125 Mhz and 

 15 feet went up another .2 Db from .6 for RG-142 to .8 for RG-58.  I am 

 glad you are not advising anyone to use foam Poly in an aircraft.  Talk 

 about center conductor migration, not to mention moisture absorption. 

 Junk....

  >I managed to find some surplus military RG-58 that is silver plated and

  >double shielded. Nice stuff, almost as nice as RG-142. I still have

  >about 100' of it and wouldn't hesitate to use it in wiring an aircraft.

 Yeah, it is called RG-223 (not RG-5 

Ah, I always wondered what that stuff was called. No one ever seemed to 

know but it walked, talked, and tasted like RG-58 so that is what I 

called it.

 	  Quote: 	
		   and I would not hesitate to use it 

 either, except that once again... in overly warm quarters, it will have 

 a migrating center conductor. That is why we pulled it OUT of most new 

 military aircraft.. if you need some more, let me know.  

Sure! I use it in my ham station where I would otherwise use RG-58, 

mostly for patch cables and temporary antenna installations.

 	  Quote: 	
		   Heck, we might as well go to Andrews SuperFlex Heliax.  :-0)

I use that stuff in my VSAT installations as a jumper to the feed horn.

Mark, you are being pedantic. And speaking as the resident pedant, We 

are not amused! 

-- 

Brian Lloyd                         361 Catterline Way

brian-yak at lloyd dot com          Folsom, CA 95630

+1.916.367.2131 (voice)             +1.270.912.0788 (fax)

I fly because it releases my mind from the tyranny of petty things . . .

- Antoine de Saint-Exupery

- The Matronics Yak-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?Yak-List

BitterlichMG(at)cherrypoi
Guest

Posted: Tue Mar 28, 2006 6:30 pm Post subject: HT leads Correction

Brian Lloyd replied:   

 	  Quote: 	
		  >  >I managed to find some surplus military RG-58 that is silver plated and 

>  >double shielded. Nice stuff, almost as nice as RG-142. I still have 

>  >about 100' of it and wouldn't hesitate to use it in wiring an aircraft. 

>  

> Yeah, it is called RG-223 (not RG-5    

Ah, I always wondered what that stuff was called. No one ever seemed to  

know but it walked, talked, and tasted like RG-58 so that is what I  

called it.   

Brian, if it is indeed RG-223, you'll know it by it's O.D. of 0.211 versus 
	


0.195 for RG-58.  That means you will have to use a UG-176 reducer instead of  

a UG-175 when using standard UHF connectors.     

 	  Quote: 	
		  > military aircraft.. if you need some more, let me know.     

Sure! I use it in my ham station where I would otherwise use RG-58,  

mostly for patch cables and temporary antenna installations.   

Me too.  It beats RG-142 when you need flexibility.  Good for duplexers too.   
	


I also have some RG-393 laying around (a spool I think) that is basically RG-214  

but again with Teflon dielectric.  Consider RG-393 to RG-214, as RG-142 is to RG-223.  

Sadly, I have very little RG-214 left.  How much do you want?  (Let's take this off list)   

 	  Quote: 	
		  Mark, you are being pedantic. And speaking as the resident pedant, We  

are not amused!    

Well consider me to be just a lowly Apprentice.  I can never lead, only follow.     
	


Oh Master Jedi ......      

 

  

Mark Bitterlich

- The Matronics Yak-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?Yak-List

Display posts from previous:

	Matronics Email Lists Forum Index -> Yak-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