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[TowerTalk] Balun Recommendation

To: <>
Subject: [TowerTalk] Balun Recommendation
From: "Jim Thomson" <>
Date: Thu, 19 Apr 2012 10:53:43 -0700
List-post: <">>
Date: Wed, 18 Apr 2012 21:47:02 -0700
From: Jim Brown <>
Subject: Re: [TowerTalk] Balun Recommendation

On 4/18/2012 12:16 PM, Steve Hunt wrote:
> Sorry to disagree again, but the CM choke dissipation DOES also depend
> on the SWR!

I don't buy your analysis, but I don't have time to pick it apart. :)

73, Jim K9YC

##  I figured that one out years ago.... and Steve is correct.  Wait, it gets 
If the choke is mainly resistive, and its only 1-2k,  then  toss in high 
swr.... and then
toss in high power and high duty cycle modes = probable  overheating.  You might
want to re-write the tutorial.   You can easily verify the increased diss with  
swr’s  by using a  Fluke point + shoot IR gun...and just measure the temp rise. 
That’s what I tried..and it works.
Remember what the sign at nasa sez...... one test is worth a 1000  opinions. 

later... Jim  VE7RF


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