If you have already received your K3, you'll need to update your
firmware in order to use our 5-pole, 2.7-kHz crystal filter. Older
firmware doesn't set up the correct passband during transmit in SSB
modes, and also doesn't allow DSP bandwidth settings below 350 Hz in
receive mode.
To obtain K3 firmware updates, you'll need our K3 Utility program,
which can be found at:
http://www.elecraft.com/K3/k3_software.htm
Instructions are provided in the program itself. Just click on the
"Help" tab.
Even though we'll be announcing all future K3 firmware updates, you may
wish to select "Check Versions Every 6 Hours" in the "Firmware" panel
of the utility program. The program will then notify you automatically
if a new revision is available.
73,
Wayne
N6KR
---
http://www.elecraft.com
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