[R-390] Resistors (in areas other than the RF/IF deck

[Stan Gammons]

Hi Tisha,

I agree with you on shotgunning. The AF and IF deck in the R-390A I have has a bunch of paper caps. I plan to replace those.  In troubleshooting the audio problem it had, I found some resistors that are out of tolerance thus I wondered what the gurus here recommended to use as replacements.  I plan to use metal film resistors.

Thanks everyone for your help on this.


73

Stan
KM4HQE


On September 27, 2017 10:27:40 AM CDT, Tisha Hayes <tisha.hayes at gmail.com> wrote:
>For power supply type applications I often use 5 watt cermet (ceramic)
>resistors. I not even like to leave 50 year old carbon comps across
>caps in
>the power supply.
>
>I can see that there are some people who are quite passionate over the
>metal film vs. the rest of the world for resistor choices. By default I
>will do a swap for a metal film because I have thousands of them in a
>variety of wattages and %'s. If I run across one that ends up skewing a
>tuned circuit I go "hmm, interesting, try to find a different resistor,
>swap it again and move along".
>
>Generally I am against shotgunning components with the exception of
>paper
>caps, BBOD or leaky oil caps (the only good paper cap or BBOD is one
>that
>you have sold on ebay to an audiophool. They can mix it with their quad
>eutectic solder, cryo-treated tubes and oxygen free copper wires).
>
>*Ms. Tisha Hayes, AA4HA*
>______________________________________________________________
>R-390 mailing list
>Home: http://mailman.qth.net/mailman/listinfo/r-390
>Help: http://mailman.qth.net/mmfaq.htm
>Post: mailto:R-390 at mailman.qth.net
>
>This list hosted by: http://www.qsl.net
>Please help support this email list: http://www.qsl.net/donate.html