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#1
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In article .com,
"Avery W3AVE" wrote: The 225 I just won on ebay turns out not to have the factory-supplied whip, which I'd like to have because I like my radios to be complete and because it might come in handy. Lowe no longer ships to the U.S., and I don't know anybody in G.B. who might ship it for me. Besides, shipping probably would cost twice as much as the antenna. Any ideas for a source? The AC adapter also is missing. What's the best way to prevent a wall wart from creating a hum problem, or should I just get a real power supply (regulated, nonswitching)? You want the power supply "wall wart" to be a linear regulator type that uses a transformer and is bypassed for low noise. -- Telamon Ventura, California |
#2
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There are wall warts that don't use a transformer to step down the
voltage?? Seems to me the only way to tell whether the output is regulated and bypassed is to check the voltage with varying loads and 'scope the output for noise. I'm starting to think it would be easier just to get one of those little Radio Shack 2 or 3 amp power supplies for $15 or $20 new or at a hamfest for $5. |
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