[TowerTalk] what type ferite core are you useing part number

[Kevin Adam]

N9IWW

What type cores are being used looks like a good balun to work with One 
question I have how does the core change the white noise level I have used 
cores that lowers the white noise. I  have the ones that was sold in the 
midwest hamfests he sold some that were coated in blue but he would never 
tell me the specs he is now SK so now no one can't get any more of the they 
worked great on hf. He would never say who made them.



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Sent: Sunday, July 13, 2014 12:00 PM
To: towertalk at contesting.com
Subject: TowerTalk Digest, Vol 139, Issue 22

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Today's Topics:

   1. Re: Cores (Roger (K8RI) on TT)
   2. Re: Cores (Jim Brown)


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Message: 1
Date: Sat, 12 Jul 2014 17:47:51 -0400
From: "Roger (K8RI) on TT" <K8RI-on-TowerTalk at tm.net>
To: towertalk at contesting.com
Subject: Re: [TowerTalk] Cores
Message-ID: <53C1AD07.8000107 at tm.net>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

On 7/8/2014 1:45 PM, larryjspammenot at teleport.com wro

I put as many as 7 turns of RG-8 size cables (LMR-400,  Davis Bury Flex,
etc) through 5 to 7 cores.
http://www.rogerhalstead.com/ham_files/AntennaFeed1.htm .  To get 7
turns, in 6 cores, takes some wire pulling soap on the last two turns.
It helps to have very straight cable to insert as well.  I epoxy, or
super glue the cores together in a nice straight stack, use glue or
epoxy sparingly.

73

Roger (K8RI)



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Message: 2
Date: Sun, 13 Jul 2014 03:18:51 -0700
From: Jim Brown <jim at audiosystemsgroup.com>
To: towertalk at contesting.com
Subject: Re: [TowerTalk] Cores
Message-ID: <53C25D0B.20101 at audiosystemsgroup.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

On 7/12/2014 2:47 PM, Roger (K8RI) on TT wrote:
> I epoxy, or super glue the cores together in a nice straight stack,
> use glue or epoxy sparingly.

Tywraps work for this too. But 7 turns without a connector; 5 is the
limit with a connector for most cables.

73, Jim K9YC


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