Re: Difficulty with PSK
Posted by
tom wylie-2 on
URL: http://elecraft.85.s1.nabble.com/Difficulty-with-PSK-tp2741511p2742515.html
This is now sorted. I am using DATA A and have had successful QSOs.
I believe the manual is a little ambiguous in the description of the
modes and assumes knowledge or familiarity with the products, which is a
problem for somebody who just wants to try things out.
The MircokeyerII is a USB interface designed to go between the rig and
the computer carrying all the audio and switching. It also has a built
in Winkey for CW so is indispensible.
See
http://www.microham.com/ for details if you are interested.
Thanks to all who have responded....
73 de Tom
GM4FDM
Don Wilhelm wrote:
> Tom,
>
> Since this question keeps coming up, perhaps the manual should be
> enhanced to educate users about terms such as ASCII that are commonly
> used for data transmission.
> See page 31 of the K3 manual, and you will find that PSK D is only
> used for ASCII and paddle input to the K3.
> Your application is most likely using soundcard generated tones.
> Therefore, you must use DATA A or (for RTTY) AFSK A. Very few
> applications send ASCII data for PSK operation.
>
> I believe that is your entire problem.
> I am not sure how you have your RTTY set up, perhaps the application
> is sending ASCII data over the RS-232 interface and therefore will
> work if the K3 is set to FSK D - you did not give those details.
>
> If your application is sending ASCII data, there is no need for the
> cables to the soundcard nor is there a need for any interface box with
> the K3. FYI, the K3 has the equivalent of a soundcard data interface
> box built-in, you only need two stereo cables from the K3 LINE IN/OUT
> jacks to the soundcard LINE OUT/IN and an RS-232 cable from the
> computer to the K3. Adding a separate interface box only complicates
> the shack and the operation.
>
> 73,
> Don W3FPR
>
> tom wylie wrote:
>> ...
>>
>> I have the K3 set to Data Mode - PSK D 31bps
>>
>> I am using the official Microham interface to radio leads connected
>> to Line in / Line Out.
>> I have set the levels admittedly using RTTY....
>>
>> ASs I said everything works fb in RTTY.
>> ...
>
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