On Thu, 28 Jun 2012 20:33:02 -0500 (CDT), K3VX wrote: >Took both a TR7 and a IC706MkIIG to a very hot FD tent. The IC706 overheated >in a few hours of CW pounding >and the power output dropped to less than 50W. Afraid of more damage I >replaced it with the TR7 which was almost flawless for the remainder of FD. >Result was very happy operators.
I would have shelved the 706 straightaway and used the TR-7 for the whole event. The TR-7 has a much tighter RX, especially under extreme conditions. I've had 706 owners come away from my TR-7 at FD wide-eyed with wonder and amazement. ;) >1. T/R antenna relay would stick (fortunately very infrequently) so instead of >returning to previous RX sensitivity the signals were way down. >Remedy? Replace the relay, if that's what it really is. It's an off-the-shelf plug-in. Could also be a slightly dirty bandswitch. >2. Is there a way to change the tuning rate (on the display it's 100Hz steps) >to 10Hz steps? Not sure what you are asking here. The TR-7 has an analog VFO, so the "tuning rate" is how fast you can spin the knob. If you are talking about display resolution, the digital readout in the TR-7 is a dedicated frequency counter. The only way to increase the resolution is to add another decade to the counter circuitry. 73 -Jim NU0C -- Ham Radio NU0C Lincoln, Nebraska, U.S.S.A. TR7/RV7/R7A/L7, TR6/RV6, T4XC/R4C/L4B, NCL2000, SB104A, R390A, GT550A/RV550A, HyGain 3750, IBM PS/2 - all vintage, all the time! "Give a man a URL, and he will learn for an hour; teach him to Google, and he will learn for a lifetime." HyGain 3750 User's Group - http://groups.yahoo.com/group/HyGain_3750/ http://incolor.inetnebr.com/jshorney http://www.nebraskaghosts.org _______________________________________________ Drakelist mailing list Drakelist@zerobeat.net http://mailman.zerobeat.net/mailman/listinfo/drakelist
