[Elecraft] K3 RTTY spectrum

[Joe Subich, W4TV]

On 2014-06-09 6:40 AM, Ken Chandler wrote:
 >
> I think I'm right in saying, you cannot use this filter if your
> running AFSK and 2tone !!

Not true!  If one is running AFSK *always use AFSK A* and set
CONFIG:AFSK TX = FIL On.

The AFSK TX Filter cleans up any hum on your sound card from bad
connections, grounding issues, or distortion from over drive.  However,
with the K3 one can get the same narrow transmit spectrum by using FSK
without the issues of AFSK.

73,

    ... Joe, W4TV


On 2014-06-09 6:40 AM, Ken Chandler wrote:
> Kjeld et al
> I think I'm right in saying, you cannot use this filter if your running AFSK and 2tone !!
>
> Ken.. G0ORH
>
> Sent from my iPad
>
>
>> On 9 Jun 2014, at 11:01, "Kjeld Holm" <kh at kh-translation.dk> wrote:
>>
>> For the RTTY people,
>> You may all know already but I did not - therefore this info.
>> In ARRL National Contest Journal September/October 2013 issue on page 3 to 7
>> the article RTTY Spectrum Measurement is discussing bandwidth issues and
>> other issues regarding transmission of RTTY. For the ones of you who have
>> access to this publication: Read it. For others the conclusion is as I read
>> it: Switch on the AFSK TX filter in the Config menu (page 53 in the K3
>> manual).
>> Vy 73 de OZ1CCM Kel
>> Kjeld Holm
>>
>>
>>
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