[Drakelist] Drake TR4C hum

I have replaced the filter caps in the power supply TR4C several times, and that is a sure-fix usually for hum, and helps in other ways also. Walt-W0EDS___ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/dra

[Drakelist] TR-4

Hi, Howard: Rick makes a very good point. The Heathkit Shop has a retrofit kit (AC-4R) to upgrade the AC-4. I ahve two AC-4s witht he kits in them and can vouch for the high quality of the kits. The URL for the website is http://www.theheathkitshop.com/. It looks like the owner is taking a brea