Doug Smith <[EMAIL PROTECTED]> made an utterance to the drakelist gang ---------------------------------------------------------------------- On Thu, 2007-11-29 at 20:08 -0700, Doug Smith wrote: > Doug Smith made an utterance to the drakelist gang > I'm going to try moving it to the T-4XC to see if that makes a difference.
OK, I've put the 160 meter crystal in the T-4XC and I'm seeing the same results as when it was in the R-4C. No output (well, about 1 watt) on transmit but excellent reception. I tested with the TRANSCEIVE switch in both XMTR and SEPARATE modes and got the same symptoms. Switching the crystal to the T-4XC eliminates the receiver as a possible problem. And the problem does only occur as the transmitter warms up. I get normal operation on all other bands so I can't believe it's a tube. And, the crystal is oscillating since I receive good signals on 160. I've put the T-4XC on the bench and put my 'scope on pin 2 (grid) of the 6EJ7 premix tube and temporarily grounded pin 3 (cathode). I see -0.93 VDC with any crystal (including the 160 meter crystal) and -1.04 VDC with the VFO. I'm thinking the crystal is OK. The symptoms are normal power output on 160 for a minute or two after initial turn-on, then power output drops off to near 0 watts and does not return until the rig has been allowed to go completely cold. Operation on all other bands is normal. I'm stumped... 73, -Doug, W7KF ---------------------------------------------------------------------- Submissions: [EMAIL PROTECTED] Unsubscribe: [EMAIL PROTECTED] - unsubscribe drakelist in body Hopelessly Lost: [EMAIL PROTECTED] - help in body of message Zerobeat Web Page: www.zerobeat.net - sponsored by www.tlchost.net ----------------------------------------------------------------------
