[Elecraft] KX3 No meter indication when transmitting digital

[Bob McGraw K4TAX]

If my understanding is correct AFSK is optimized for RTTY where as DATA 
A is for other audio digital modes.  If operating AFSK then the range or 
frequency of the tones are critical, being optimized for the RTTY tones, 
   unlike DATA A which will cover 200 Hz to 2700 Hz.  Sounds like 
operating in the incorrect mode for FT-8.

73

Bob, K4TAX


On 3/14/2019 11:59 PM, Bill Frantz wrote:
> If I remember correctly, the KX3 can show zero bars when overdriven. 
> I's easy to check. Just bring the level up slowly from zero and check 
> that the ALC rises slowly.
>
> Remember that there are at least 3 AF level controls. The one in the 
> program, the OS level control, and the knob on the KX3.
>
> I don't know why any of them would change suddenly though.
>
> An external RF power meter or another receiver can check if you are 
> transmitting.
>
> 73 Bill AE6JV
>
> On 3/14/19 at 7:52 PM, esteptony at gmail.com (Tony Estep) wrote:
>
>> I have been operating with FT8 and WSPR lately. Both use an 
>> audio-generated
>> digital signal just like any AFSK mode. I tune up my transmitter to show
>> 4-5 bars on ALC. Everything seems to work at first, but after one or two
>> transmissions the display shows only one bar on the left and one on the
>> right -- and if I move the Mic Gain, all bars disappear leaving a blank
>> display. The transmit light stays on but I can't tell if I'm 
>> transmitting
>> any audio or not. What's going on??
>>
>> thanks,
>> Tony KT0NY
>
> -----------------------------------------------------------------------
> Bill Frantz        | Concurrency is hard. 12 out  | Periwinkle
> (408)356-8506      | 10 programmers get it wrong. | 16345 Englewood Ave
> www.pwpconsult.com |                - Jeff Frantz | Los Gatos, CA 95032
>
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