[AMPS] Tuned Input, what me worry

Steve Katz stevek@jmr.com
Tue, 9 Oct 2001 10:45:05 -0700

Yep, I've also used RG188 (.100" TFE), very inexpensive surplus and lots of
loss.  RG142 and RG400 can handle a few kW and are quite lossy, makes the
perfect antenna matcher.  Simply install 1000' of it between the amp and the
antenna, smooths the load right out.



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

> -----Original Message-----
> From:	Steve Thompson [SMTP:g8gsq@qsl.net]
> Sent:	Tuesday, October 09, 2001 10:54 AM
> To:	Steve Katz
> Cc:	amps@contesting.com
> Subject:	Re: [AMPS] Tuned Input, what me worry
> -----Original Message-----
> From: Steve Katz <stevek@jmr.com>
> To: 'Steve Thompson' <g8gsq@qsl.net>
> Cc: 'amps@contesting.com' <amps@contesting.com>
> Date: 09 October 2001 15:35
> Subject: RE: [AMPS] Tuned Input, what me worry
> >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.
> Only downside is the frequency dependence (there's a joke there somewhere
> about frequency of opening beer bottles - sorry Joe). You could also go
> for
> something like RG316 - PTFE gives the temp/power rating, but you end up
> with
> a shorter length and smaller bundle.
> Steve

FAQ on WWW:               http://www.contesting.com/FAQ/amps
Submissions:              amps@contesting.com
Administrative requests:  amps-REQUEST@contesting.com
Problems:                 owner-amps@contesting.com