[AMPS] Tuned Input, what me worry

[Steve Katz]

Rather than build resistive pads, which involves calculating and soldering,
it's easier to just coil up a bunch of RG58/U and cut it to the right length
for the attenuation needed; then, open a beer and relax.

WB2WIK/6

"Each success only buys an admission ticket to a more difficult problem." --
Henry Kissinger

> -----Original Message-----
> From:	Steve Thompson [SMTP:g8gsq@qsl.net]
> Sent:	Monday, October 08, 2001 11:48 PM
> To:	amps@contesting.com
> Subject:	Re: [AMPS] Tuned Input, what me worry
> 
> 
> 
> -----Original Message-----
> From: Steve Katz <stevek@jmr.com>
> To: 'KG6DV@cs.com' <KG6DV@cs.com>; amps@contesting.com
> <amps@contesting.com>
> Date: 09 October 2001 00:03
> Subject: RE: [AMPS] Tuned Input, what me worry
> 
> 
> >
> >Ron, doesn't a 1dB pad only provide 1dB of impedance stabilization?
> >
> >Think about it, and then have a beer.  I'll have one, too!
> Nonono, beer first!
> 
> Anyway, a 1dB pad provides a 2dB improvement - drive power goes through
> the
> pad, some or all gets reflected, goes through the pad again before the
> driver sees it. With 3 dB pad, you can't get worse than 3:1 VSWR, even if
> the output end is open/short/any phase. A 6dB pad guarantees you about 2:1
> max.
> 
> Steve
> 
> 
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