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

[Alex Eban]

...definitely metal film!
We had a lot of experience with these at Tadiran years ago.
At the frequencies you mention stray inductance shouldn't be much of an
issue. And stability wise you would be set for eternity.
Alex	4Z5KS

-----Original Message-----
From: amps-bounces at contesting.com [mailto:amps-bounces at contesting.com] On
Behalf Of Jim Barber
Sent: Wednesday, August 12, 2009 11:07 PM
To: AMPS
Subject: [Amps] Carbon film or metal oxide film resistors for low-power
RFcircuits?

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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