John, A definite YES on #3 - this is your first order of business. If you have a KAT2 in your K2 package, change the KAT2 R6 to 470 ohms. If you do not, you will not be able to achieve the full 1 mW output from the K60XV. The KAT2 does not have a tri-state driver for the VRFDET signal and its output will interfere with the power control circuits when the K60XV is in use.
73, Don W3FPR John Hoaglun wrote: > 3. KAT2 modification for use with K60XV LP mode: In some cases the LM358 > op-amp on the KAT2 > can load down the K60XV's low-power RF detector (at the emitter of Q2), > preventing the K60XV from > developing a full 0 dBm (1 milliwatt) signal at the transverter OUT > jack. To correct this, change R6 on > the KAT2 from 47 ohms to 470 ohms. This resistor is supplied with the > K60XV kit. R6 is on the bottom > of the KAT2 control board, and can be changed without removing the KAT2 > module. > > > Maybe Item #3 is the answer. Thoughts? I might try this after dinner. > > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
