Bob: Google: Drake List. If it's still on the WWW it's a good resource for repair those ducks. 73's Greg WA7LYO Kinston NC ----- Original Message ----- From: "Robert Perdue" <[email protected]> To: "Discussion of AM Radio in the Amateur Service" <[email protected]> Sent: Wednesday, April 08, 2009 11:34 AM Subject: [AMRadio] Drake TR-4
>I have a TR-4 that keys up as soon as the tubes warm up. Replaced the 6EV7 >no luck. Checked negative voltage to pin 2 of the 6ev7 it is down to 4 >volts vox and antivox have some effect on the voltage I can put the tube >into cutoff with -10v I have very little Drake experience any help would be >appreciated. Both pots check good on vox/antivox as well as bias supply >from power supply and plate voltage is good to the 6ev7 is this a common >problem? Thanks. > > Bob kc0hfl > ______________________________________________________________ > 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 > Post: [email protected] > To unsubscribe, send an email to [email protected] with > the word unsubscribe in the message body. > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ 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 Post: [email protected] To unsubscribe, send an email to [email protected] with the word unsubscribe in the message body. This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
