I believe that figure of 3400 Hz is the AUDIO bandwidth which is equivalent
to an AM bandwidth twice that, or 6.8 kHz. If I am correct, then you can
most certainly take advantage of your 6 kHz AM filter which will limit your
broadcast audio bandwidth to 3.0 kHz. The 15 kHz filter will get you an
extra 400 Hz.of audio, but is probably not practical due to the excessive
bandwidth. Save that one for FM.
73, Charlie k3ICH
On 10/7/2013 4:51 PM, Joe Subich, W4TV wrote:
On 10/7/2013 4:39 PM, Bob wrote:
Just be aware that current DSP firmware in the K3 limits the receive
bandwidth to something around 3400 Hz. So even if you have a wider
filter, like the 6 KHz AM filter, you will not be able to utilize the
full 4 KHz bandwidth of WSJT-X for JT65/MT9 modes.
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