All, Update on the TR-4c relay issue. I did the pull test - i.e. pulled the tube while the radio was hanging in transmit. The relay immediately opened and radio went back to receive. Seems that the relay is Ok.
Pulled the 6CG7 and placed it in the Hickok 6000 tester. It tested as "good" but was low in the transconductance test - 2100 out of 2600 on one side and 2400 out of 2600 on the other. Is this tube considered "bad" for this application? If so, can I substitute a 6ev7 as the 6FQ7/6CG7s are getting expensive. Also, the copy of the TR4C manual that I have shows the 6EV7 as the vox amp/relay driver and has the associated voltage and resistance measurements for that tube. Does anyone have a similar chart for the 6FQ7/6CG7 tubes ? Thanks in advance 73 Gene K1NR --------------------------------------------------------------------- Web mail provided by NuNet, Inc. The Premier National provider. http://www.nni.com/ _______________________________________________ Drakelist mailing list [email protected] http://mailman.zerobeat.net/mailman/listinfo/drakelist
