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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