Hi Jim,
I'd suggest using mil type RLR or if you realllly want long term reliabilty
use type RNC.
Either one will last near forever. No comparison to carbon comp or even film.
73 & Good morning,
Marv WC6W
http://wc6w.50webs.com/
--- On Wed, 8/12/09, Jim Barber <audioguy@charter.net> wrote:
> From: Jim Barber <audioguy@charter.net>
> Subject: [Amps] Carbon film or metal oxide film resistors for low-power RF
> circuits?
> To: "AMPS" <amps@contesting.com>
> Date: Wednesday, August 12, 2009, 1:06 PM
> If you wanted a precision RF
> instrument to last a long time without
> significant component drift, would you use carbon film or
> metal oxide
> resistors?
>
> Assumptions:
> (1) Little to no RF power dissipated in the resistors
> themselves
> (2) Frequency less than 60mhz
> (3) There would be room for physically larger 1-watt
> metal-oxide
> (4) Cost isn't an issue (repair quantities, mostly)
>
> Looking for opinions, of course. I find myself replacing
> carbon
> composition units all the time, and was wondering if
> metal-oxide would
> be "better" than carbon-film for these purposes.
>
> Thanks,
> Jim, N7CXI
>
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