On Wed, 2012-07-04 at 11:03 +1000, Gary Gregory wrote: > *Well as nobody responded to my original post which identified a possible > issue with my station setup which allowed the P3 to display live TX audio > from the K3 ...
I should have copied the list on my previous reply to Gary. (See below) Alan N1AL -------- Forwarded Message -------- From: Alan Bloom <[email protected]> > Reply-to: [email protected] > To: Gary Gregory <[email protected]> > Subject: Re: Fwd: Screen Shots showing TX signal appearing on P3 > Date: Mon, 02 Jul 2012 10:07:08 -0700 > > Hi Gary, > > The P3 is supposed to blank the screen whenever the K3 goes into > transmit mode. If that's not happening then it sounds like there must > be an RS-232 communications problem between the K3 and P3. One > possibility is if you have some third-party software program running > on the PC that is overloading the RS-232 capacity by sending large > volumes of commands to the K3. For example Ham Radio Deluxe is known > to do that, depending on its settings. > > If you want to see the IF leakage during transmit you can do that by > disconnecting the RS-232 cable. Another way is to change the "Xcvr > Sel" menu selection to "8215 kHz (inverted)" instead of "K3". > > I've been resisting making that an official feature because it really > isn't very reliable. It depends on random leakage through the mixer > and PIN diode switches in the K3, which are unspecified. It also > varies with band and transmit power level and may result in too small > a signal to be useful under some conditions. > > The plan is to include a modulation monitor function with the future > external power sensor option. I've had the hardware done for months > but have been too busy with the SVGA development to have time to do > the firmware. Real Soon Now. :=) > > Alan N1AL ______________________________________________________________ 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
