Rudolf, the problem is not one associated with the accuracy of the K3 meter, but one of the ALC being fairly "slack" with the end result that a fluctuating audio input from speech or from a sound card on many data modes results in widely varying power, unfortunately often exceeding the level set by the power control. An oscilloscope or peak reading Wattmeter, such as the LP-100, will catch and display the peaks far better than can be read from the K3 meter.
I hope Elecraft continue their efforts to fix this irritating problem, as not only does it make the use of some digital modes tedious, but running a linear on SSB results in power levels which often exceed the legal power limit - even when being very careful to set the drive level (UK power limit 400W, using an Acom 1000 which does not use ALC feedback). 73 Dave, G4AON K3/100 #80 ------------- <SNIP> I've done some measurements some time ago with my K3 #1212 and i had the following values: K3 power set to 20W, f=7.040MHz 25W 50 Ohms dummy load MCE/Weinschel LP-100A Wattmeter mode USB 1 kHz sine audio at rear line-input, level adjusted to have the desired ALC bar configuration <SNIP> Rudolf, HB9ARI _______________________________________________ Elecraft mailing list Post to: [email protected] You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
