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Re: [TenTec] TenTec Digest, Power Supplies

To: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Subject: Re: [TenTec] TenTec Digest, Power Supplies
From: Clayton Brantley <clayton_n4ev@yahoo.com>
Reply-to: Clayton Brantley <clayton_n4ev@yahoo.com>, Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: Sat, 8 Sep 2012 04:57:15 -0700 (PDT)
List-post: <tentec@contesting.com">mailto:tentec@contesting.com>
I agree Jim.  Switchers belong in the trash dump!  Never liked those things.

Clayton N4EV




________________________________
 From: N4be_Jim <n4be_jim@yahoo.com>
To: "tentec@contesting.com" <tentec@contesting.com> 
Sent: Friday, September 7, 2012 10:03 PM
Subject: Re: [TenTec] TenTec Digest, Power Supplies
 
> 
> I use only linear supplies where possible.  I couldnt care less about 
> efficiency.  Why?  Ever listen to the trash a cheap switcher puts out on HF?  
> Unless well designed and filtered, a switching supply will raise the noise 
> floor several S units.  Yes there are decent ones but i would rather not 
> worry about it.  Yes TT makes decent switchers, such as for the Orion, but 
> ever hear one of those when the fan kicks in?  In my area a great deal of HF 
> hash in generated by all the cheap Chinese supplies that dont adhere to our 
> EMI standards, but we still accept their imports. No I will take my Astron 50 
> amp 12 vdc supply any day.  It runs my O2 and Harris RF-3200E quite easily 
> while loafing along.   Jim N4BE
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