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Re: [TenTec] On Switching Power Supplies

To: tentec@contesting.com
Subject: Re: [TenTec] On Switching Power Supplies
From: John Farler <k4avx1@windstream.net>
Reply-to: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: Sun, 19 Jan 2014 11:23:13 -0500
List-post: <tentec@contesting.com">mailto:tentec@contesting.com>
Really?  Super-regen receivers?  Help me out here.  I know how a
regen rx works, but I've never heard of a "super-regen" except on
Vhf ala the famous Heath Lunchboxes.  They didn't decode CW,
nor  SSB. I know very little about their theory of operation.

But Regens will decode CW, of course, but would need a stage
or stages of RF amplication (or isolation) in the front end to
keep the RX from sending out a signal that could be detected
from it's oscillating detector.

Not saying a real "super-regen" might not somehow be used, but
please fill me in...Maybe you are referring to such REGENS as
described above as "super regens?"

John, K4AVX

Message: 3
Date: Fri, 17 Jan 2014 16:44:07 -0600
From: Kim Elmore<cw_de_n5op@sbcglobal.net>
To: Discussion of Ten-Tec Equipment<tentec@contesting.com>
Subject: Re: [TenTec] On Switching Power Supplies
Message-ID:<B88F15AE-8654-4639-86AB-E4A1C419617C@sbcglobal.net>
Content-Type: text/plain;       charset=us-ascii

If and only if the sole and singular concern is RF quiet operation, the a 
linear supply is the only choice. If efficiency plays a role, the you choose 
the technological path.

As an aside, in WWII and the decades that followed -- when CW was the dominant 
mode and required only a Second Class Radiotelegraph license was needed -- most 
ships used super regen receivers, even though superhet receivers were 
significantly better. Why?

Because submarines couldn't find shops with super regen receivers because 
they're radio-quiet.

It all depends on the operational constraints.

Kim N5OP

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