[ARC5] restoring hacked vhf receiver

[David Stinson]

From: Robert Eleazer

Subject: [ARC5] restoring hacked vhf receiver

 

By the way, I am wondering about those buck-boost
converters you see for sale for a few bucks the
ones that can take in around 5 to 30VDC and put
out 1.5 V to 35 VDC.  I have been trying to build
am LM350 circuit to provide a little over an amp
at 28 VDC to power a radio and while it worked at
first it's been driving me nuts.  Is the power out
of those buck/boost converters fairly clean or are
there lots of harmonics?

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They are very useful, and they are very RF-noisy.
One really needs to build it into an RF-tight
enclosure with filtering in and out.  I posted
about this a few days ago.

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