[Amps] R. MEASURES PRAYERS ANSWERED

Gudguyham at aol.com Gudguyham at aol.com
Thu Jun 1 22:43:54 EDT 2006


 
In a message dated 6/1/2006 9:04:13 P.M. Eastern Standard Time, r at somis.org  
writes:

I'd even  go a step farther - I took the nichrome out of my SB-220,  
>  substituted traditional suppressors, and picked up about 50 watts   
> output on 10 meters.  Not a significant amount, but indicative  of  
> the amount of additional heat and potential reliability  problems.   
> The amp remains very stable.
>
>  73, Pete N4ZR



I have had dozens of Sb-220 amps in my almost 40 years as a ham.  Most  of 
the parasitic suppressors I have changed had their carbon resistors change  
value enough to make them not as effective as suppressors should be.  Most  of the 
time a change of resistors will tame a quirky Sb-220.  Anyone who  has used 
an Sb-220 a lot on 10 meters would eventually see little bubbles on the  carbon 
suppressor resistors, figure they need replacing and use Rick's  suppressors 
as replacements.  Of the dozens I have had, at least 50% of  them had his 
supressors.  No doubt they work.


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