Yes I do know that it´s not the rise/fall time alone, that has never been my point. However one factor is the rise/fall and if it´s too fast it will not be possible to fix it with shaping.
Why, yes IMO the K3 clicks too much. I know it can be done since there are radios around that doesn´t click at all and at the same time the keying is "hard enough" for normal CW use. Sure you can´t key it to 500-600 lpm but thats not normal CW. / Jim SM2EKM ----------------- On 2010-12-03 16:00, Paul Christensen wrote: >> OK. AFAIK at 4 ms a CW TX will have to much > bandwith. Even the K3 at 5 ms (if it hasen´t changed > since I measured it) do have "mild clicks". > > It' not strictly the rise/fall time, it's the shape of the RF envelope > within the rise/fall time. > > http://www.w8ji.com/cw_bandwidth_described.htm > > Using the internal calibrator on my Tektronix SC504, I just measured the K3 > rise time at 2.5 ms. I measure from the time the envelope just begins to > take off from zero until the point that full amplitude is reached. > Actually, full power on my K3 is not achieved for several more msec, but the > dominant transition to the full power is measured at 2.5 ms. > >> I wish the K3 could be set to something like 7 or 8 ms. > > Why? > > Paul, W9AC > ______________________________________________________________ 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
