Thank you Bob.
Mike - K9JRI
> On Feb 10, 2018, at 13:57, Bob McGraw K4TAX <rmcg...@blomand.net> wrote:
>
> Based on my measurements the transmit frequency response is limited by the
> 2.7 kHz SSB filter. It is reasonably flat thus +/-3 dB from 400 Hz to about
> 2500 Hz. My next measurement points were 300 Hz {-6 dB} on the low end and
> 3000 Hz {-6 dB} on the high end or 2700 Hz.
>
> Thus your numbers of 200 Hz to 2900 Hz is 2.7 kHz, otherwise about the 6 dB
> points on the filter. I did not go into the ESSB mode and perform any
> measurements. These were done in DATA mode, thus negating TX EQ and Speech
> Processing. I also did similar measurement with TX ALC OFF and in USB mode
> and in USB with TX EQ set to 0 dB at all frequencies and well below any ALC
> action.
>
> While I'm always reluctant to measure and report transmit frequency response
> of a SSB transmit path, namely because many users not understanding what
> takes place, thus would exclaim "that's horrible frequency response" while
> in fact just the opposite is true in that it makes for darn good sounding
> audio.
>
> To answer your question, referring to the Elecraft manual and the Fred Cady
> book, I find no way to "adjust" the transmit frequency response other than
> via the TX EQ. On that point, I will emphatically state "it is always
> better to attenuate a frequency or range of frequencies as opposed to boost a
> frequency or range of frequencies".
>
> 73
>
> Bob, K4TAX
>
>
>
>> On 2/10/2018 12:04 PM, Michael Blake wrote:
>> Using normal SSB with the stock 2.7kHz. wide crystal filter is there any way
>> to adjust the lower and upper bandwidth frequency ranges other than the TX
>> EQ?
>>
>> For example how would I adjust so that my 2.7 kHz. bandwidth was from 200Hz.
>> to 2900Hz.?
>>
>> It is easy to do on the receiver but I cannot figure out how to do this on
>> the transmitter.
>>
>> 73 - Mike - K9JRI
>>
>>
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>
>
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