On Thu, Mar 6, 2008 at 10:15 AM, A.R.S. - WA5AM <[EMAIL PROTECTED]> wrote:
> The 8877 is a 1500 watt tube, and the plates > are tough with forced air cooling, but they are also real expensive. > It runs much hotter on AM with very little drive, than it does on SSB > with drive levels up to 65 watts. Bottom line is that I think tube > life is greatly reduced when running a linear amp on AM, but that's > just my opinion. I think you're right on the money, Brian. Add to that the finicky grid tuning of the 8877 and bad batches sold in the late 80s, and to me at least, it's an expensive failure waiting to happen. The main reason for selling the Alpha 77 last year. Not sure about the 3-400/500Z tubes used in the Drakes. It'll work and get you by Bob, but I'd definitely shoot for building or finding a big rig for AM. ~ Todd, KA1KAQ ______________________________________________________________ Our Main Website: http://www.amfone.net AMRadio mailing list Searchable Archives: http://www.mail-archive.com/[email protected]/ List Rules (must read!): http://w5ami.net/amradiofaq.html List Home: http://mailman.qth.net/mailman/listinfo/amradio Help: http://mailman.qth.net/mmfaq.html Post: mailto:[email protected] To unsubscribe, send an email to [EMAIL PROTECTED] with the word unsubscribe in the message body.
