Hi folks, I picked up an R-4 (no-suffix) about a year ago and listened on it for a while with just a random wire inside the house. Really like the radio. Back in the spring, it developed a hum, and sounded like the radio was zero-beat with a carrier wherever I tuned. I figured filter caps were bad, and probably something in the AGC circuit. I subsequently got married, moved, etc. and figured the repair would have to wait until things settled down a bit.
I'm finally getting to where I can look at the rig. I opened it up, and it looks like it's never been touched inside. So, I decided to get a Hayseed can replacement for the filter caps instead of going with discrete caps. Mine has a three section 100mfd/200v can - not the 4 section Hayseed sells as a replacement. No problem, just use the three 100uF sections, ignoring the extra 22uF section. Anyway, to the point... There are about a half-dozen or so paper caps in the rig - should I routinely replace them as well? If so, any particular recommendations? I'm also planning on replacing a few tubes - in the RF am and AGC stages for starters. Any pitfalls to watch out for there? Thanks! 73 de Lee -- Lee Hiers, AA4GA www.aa4ga.com _______________________________________________ Drakelist mailing list [email protected] http://mailman.zerobeat.net/mailman/listinfo/drakelist
