[Elecraft] TX Bandwidth

[GRANT YOUNGMAN]

This is all true.  Elecraft CAN in fact give you a much better bandwidth (maybe 4 Khz+  AUDIO Tx bandwidth when transmitting through the 13 KHz filter), which is quite good and sounds great on the air according to reports.  So far, they have not been inclined to make it a part of the “standard” feature set and officially ignore virtually all related comments and requests (no matter how many times you genuflect)   It’s really REALLY hard to understand why … they’ll give one interest segment everything they want, and simply ignore this one.  I know .. we’re small in number, and some well known list members like to jump in bash any request for “wider” bandwidth for anything.

I guess “timepiece" accuracy just gets more swipes.  Like I don’t already have a watch :(

At this point in THAT thread, I’m actually surprised there haven’t been complaints that they don’t offer interchangeable watch bands for the KX2  … 

Grant NQ5T


> On Aug 29, 2016, at 5:27 PM, Don Wilhelm <donwilh at embarqmail.com> wrote:
> 
> David,
> 
> This is an often asked question - but it confuses the IF (or RF) bandwidth with the audio bandwidth.  You can only get 3 kHz of audio from a 6 kHz wide AM signal.  If you are using the 13kHz roofing filter for AM, you might get a bit more audio bandwidth.
> It has been that way since the invention of AM modulation.  The audio is only 1/2 of the transmitted bandwidth.
> 
> An AM signal occupying 6 kHz of RF (IF) bandwidth will have audio only up to 3 kHz.  The AM signal transmits both sidebands, each containing the same audio information, so you can only recover half of that in the audio range.
> 
> The K3(S), KX3 and the KX2 report the audio bandwidth, not the IF (or RF) bandwidth.
>