[Elecraft] Location, location

[Fabio IZ4AFW / NZ1W]

Hi guys,
    for the same reason I think that rolling off at least the first TXEQ 
band could be a good idea also for AFSK communication, but the TXEQ is 
flat in data mode, and not modifiable.

Could this be an useful addition to a new firmware release?

Ciao 73
Fabio
  IZ4AFW - NZ1W - HI9/IZ4AFW


Il 07/09/2012 8.06, Jim Brown ha scritto:
> On 9/6/2012 4:48 PM, N2TK, Tony wrote:
>> For some reason the Line-In was
>> at maximum. I was getting hum on my transmit audio
>
> The problem is that the transformers are unshielded (and un-needed, but
> that's another discussion), and unshielded transformers are sitting
> ducks for magnetic fields.  The simplest solution is to roll off the low
> end using TXEQ, which is a good move anyway.  Most of the what comes
> through a mic picking up speech below about 150 Hz is breath pop,
> handling noise, and room noise, and nothing below about 400 Hz
> contributes to speech intelligibility.  So a smart operator will use
> TXEQ to kill everything below about 300-400 Hz.  TXEQ makes that easy,
> and it kills the hum picked up by the transformer.
>
> 73, Jim K9YC
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