Re: [Drakelist] Need some R-4A help:

Replacing a bad cathode bypass capacitor with a fresh one will increase hum because the low freq gain will be improved along with better bass response. But you shouldn't have hum in the speaker anyway (only some residual hum in headphones at low volume) if the audio stage and B+ feed is operating

Re: [Drakelist] equivalent transistor for drake 2-C

The RCA 40310 is a 4A 35V device designed for wide safe operating area up to 29W in audio applications. It's very low cutoff freq of 750KHz strongly suggests epitaxial base construction which is hard to find today. The Drake application is being gentle on the device, so you can probably get away

[Drakelist] R4C Panel

Hello,   I am looking to buy a front panel for my R4C.Late serial number with the 5 position modeMust be scratch free..Some nice person drilled a hole in it... Thank you,,Stan    VE3GN/VE3FKD   Ottawa Canada___ Drakelist mailing list