[Amps] Carbon film or metal oxide film resistors for low-power RF circuits?

[Radio WC6W]

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 at charter.net> wrote:

> From: Jim Barber <audioguy at charter.net>
> Subject: [Amps] Carbon film or metal oxide film resistors for low-power RF circuits?
> To: "AMPS" <amps at 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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