Cutting the bandwidth of the audio going into the modulator is
indistinguishable from narrowing the bandwidth after the modulator.
If you don't believe that run a 1/3 octave EQ (so you have finer
control) between the mic and the input of the K3.
Of course, you can always install an INRAD 2.1 KHz filter in the
K3 and tell the rig it is a 2.7 KHz filter ... that should give
you a tight 400-2600 Hz response.
73,
... Joe, W4TV
On 4/27/2014 10:07 PM, XE3/K5ENS via Elecraft wrote:
Joe,
You of all people should know it's not the same as actually narrowing the
IF.
You should try both and compare.
Keith
If you use K9YC's suggested EQ you will be very close to 2.3/2.4 KHz
audio - particularly if 400 and 3200 are set to -16 dB. Try it ...
73,
... Joe, W4TV
On 4/27/2014 7:41 PM, XE3/K5ENS via Elecraft wrote:
I've been asking for the ability to narrow the transmit bandwidth on the
K3
for years. That would make a better contest radio.
But alas all I hear is it's on the list.
Keith
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