[Elecraft] K3 built-in 2-tone generator problem (2.7 kHz filter)

wayne burdick n6kr at elecraft.com
Fri Oct 10 16:03:32 EDT 2008


The K3 provides an internal 2-tone generator for SSB transmit IMD 
testing.

We just discovered that it was not working with the 2.7 kHz filter. One 
of the tones would in this case be right on the filter's edge, 
resulting in very poor tone balance. Also, 2-tone testing was set up to 
work only in LSB mode.

Anyone trying to use the 2-tone generator for testing with the 2.7 kHz 
filter and/or USB may have quite anomalous results.

Both problems will be corrected in the next beta-test release, likely 
to be next week. If you're doing 2-tone testing and would like to try 
the latest field-test firmware, which has the corrections, please 
e-mail me directly.

73,
Wayne
N6KR



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