[Boatanchors] RME-69 'lytic replacement

[D C *Mac* Macdonald]

Aren't the capacitance ratings of most electrolytics
between - 10% and + 100%?
 
73 - Mac, K2GKK/5
OKlahoma City, OK


----------------------------------------
> Date: Tue, 23 Mar 2010 19:06:31 -0500
> From: n0jmy at hayseedhamfest.com
> To: cwopr at embarqmail.com
> CC: boatanchors at mailman.qth.net
> Subject: Re: [Boatanchors] RME-69 'lytic replacement
>
> Hiya, Bill. I'm not sure some of the folks that have replied to you
> realize what your up against with that RME-69, i.e. that it's got a
> potted square can that is a real mother-bear to get out. The
> installation of that dude must have been one of the very first steps on
> the assembly line, and what came later made the mounting nuts completely
> inaccessible, without taking half the radio apart, IIRC.
>
> I vote with the fellows that suggest installing some "discreet
> discretes" under the chassis, unless you just relish the challenge. A
> couple of 10 uF @ 450V's, and whatever you can come up with that's close
> to a 12 uF @ 450V (probably another 10 uF will be well within the old
> tolerance).
>
> While your at it, there's probably a low voltage electrolytic (around 10
> or 20 uF @ 25 to 50 volts) around the output amp somewhere for the
> cathode bias. An old guy like that probably needs replaced, too.
>
> Good luck with that rig. The RME that doesn't look like an RME, hi HI!
>
> 73,
> Tom