[Elecraft] RTTY Problem

[Don Wilhelm]

Jim,

Yes, I understand that, but ---  If the terminal window works, the K3 
itself is capable of generating RTTY.

Still, try the K3 Utility Terminal window to help to isolate the problem.
If the Terminal window does not procuce RTTY code, then the problem is 
in the K3 DSP.  However, if the terminal generated RTTY works, next try 
RTTY from the paddles (or if you cannot use the paddles well enough, 
store a K3 memory and play that).

If both of those work, look carefully a whatever level conversion you 
are using between the K3 FSK input and your RTTY generating interface.

Problems like this are usually solved in stages - verify what is working 
as well as what is not working and you can more easily isolate to the 
source of the problem.

73,
Don W3FPR

On 12/21/2012 7:45 PM, Jim Rhodes wrote:
> Don, remember that the RTTY generated from the terminal window does not use
> the FSK interface. I was reminded of this last week when trying to diagnose
> a similar problem. (Which I have yet to solve, but will now have to wait
> till I get home again) I was thinking that the problem was with my HB
> interface, but I didn't have time to swap out the opto in the box for a new
> one. Maybe I have the same problem. Won't be back till next Friday so that
> will have to wait till I have some time off. I would just get a steady tone
> using MMTTY/Writelog, but got transmitted & decoded RTTY using the terminal
> mode. First thing I will do is put the scope to the FSK port to see if the
> signal is getting that far. If so the problem is internal, if not then
> probably the 2N35 is gone in the interface. Will post here once I find out
> anything.
>
> On Thu, Dec 20, 2012 at 11:15 PM, Don Wilhelm <w3fpr at embarqmail.com> wrote:
>
>> Rich,
>>
>> What firmware version are you running?  I have version 4.61 loaded and do
>> not see the problem.
>> I just tried it using the K3 Utility Terminal window, and listened to the
>> monitor with the K3 in TX TEST and heard (and decoded) the text sent.
>>
>> 73,
>> Don W3FPR
>>
>> On 12/20/2012 11:20 PM, K3RWN wrote:
>>
>>> I will try to explain as best as I can.
>>>
>>>
>>> When I put my K3 into RTTY mode it does not TX FSK.  I get a single tone
>>> with no power out.
>>>
>>>
>>> Until I go into the menu and switch from 45baud FSK to say 31baud PSK and
>>> back to FSK?
>>>
>>>
>>> I know this has been discussed before but I have not seen any fixes in the
>>> newest versions of FW.
>>>
>>>
>>> Is there a FW fix coming for this issue?
>>>
>>>
>>> Rich
>>>
>>> K3RWN
>>>
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