On 7/1/2023 10:34 AM, Steve L wrote:
The IC7300 was among the better commercial transceivers in terms of spurious emissions, clicks, splatter, etc. It wasn’t at the top of the list (the K3s is however), but was in the “better” category. However, Rob recommended a change in the CW signal rise time to no less than 6 milliseconds - I forget which menu item it was - but he criticized Icom specifically for a default setting that induced key clicks.
ICOM rigs are NOT among the cleaner ones -- that spot falls to Kenwood, which is second to Elecraft (and, I suspect, Flex 6000 series, which I haven't measured).
Yes, adjustable rise time is a REALLY bad idea, which K6XX pointed out in 2013, and which I measured on the air for K6XX's talk, in a neighbor's ICOM rig. Slower is better, but Elecraft's is best by far, carefully shaped keying waveform.
73, Jim K9YC ______________________________________________________________ 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 Message delivered to [email protected]
