[Elecraft] PSK D and FSK D, request for feature
Wayne Burdick
n6kr at elecraft.com
Thu Oct 2 16:13:50 EDT 2014
Hi Igor,
If RIT is turned on, then Autospot (CW and PSK31) is already applied to the RIT offset, not directly to VFO A. I believe this is what you're asking for?
There is no Autospot for RTTY (FSK-D) at this time. However, if CWT is turned on, then it's pretty easy to tune in an RTTY signal by watching the mark and space deflection on the CWT scale.
73,
Wayne
N6KR
On Oct 2, 2014, at 12:13 PM, "Igor Sokolov" <ua9cdc at gmail.com> wrote:
> I want to Echo Rob's question and wonder if it is possible to implement some basic autotune algorithm similar to pressing SPOT button in the following situation:
> When I call CQ in PSK D and someone comes back to my call slightly off frequency, I have to enable RIT and try to manually tune to a signal to get it decoded. That is not easy. I would like to see the situation when enabling RIT in these two DIGI modes would start autotune algorithm automatically.
>
> 73, Igor UA9CDC
>
> ----- Original Message -----
>> Excuse me while I learn what questions to ask,
>>
>> Wondering if there is a logging and more program that will allow use of
>> CW and the PSK D and FSK D modes of my KX3 in a more complete application
>> than the KX3 utility terminal?
>>
>> Secondly...how do you tune in stations using PSK D and FSK D? I find it
>> very difficuly especially with other psk and rtty stations nearby.
>> I haven't gotten NAP3 or the KX3Companion to tune correctly as yet except
>> for SSB and CW wher they do a fine job.
>>
>> Rob
>> KA5QQA
>>
>> On Thu, Oct 2, 2014 at 11:56 AM, Joe Subich, W4TV <lists at subich.com> wrote:
>>
>>>
>>> On 2014-10-02 12:03 PM, dmoes at nexicom.net wrote:>
>>> >
>>>
>>>> Joe you are correct that if there are physical problems and poor
>>>> adjustments it will be bad but I was assuming a good working setup
>>>> with a quality sound card that is properly adjusted at both the
>>>> computer and K3 that it will be fine.
>>>>
>>>
>>> Unfortunately, that is not a good assumption. Even the best of
>>> stations with *professional* operators and maintenance can have
>>> adjustment problems or equipment failures (I've documented such
>>> even at W1AW in the last couple years). When you add in the
>>> relative inexperience of someone new at sound card based digital
>>> modes, conditions become very bad very quickly and I can provide
>>> example after example of maladjusted rigs, improperly operating
>>> home brew interfaces, etc.
>>>
>>> At least, by placing a narrow filter in the transmit audio path,
>>> the K3 prevents the greatest number of those errors. Other rigs
>>> with no monitor, no audio controls, ineffective ALC, and no audio
>>> filtering become QRM generators if one looks at them cross-eyed.
>>>
>>> 73,
>>>
>>> ... Joe, W4TV
>>>
>>>
>>>
>>> On 2014-10-02 12:03 PM, dmoes at nexicom.net wrote:
>>>
>>>>
>>>>
>>>> Joe you are correct that if there are physical problems and poor
>>>> adjustments it will be bad but I was assuming a good working setup with
>>>> a quality sound card that is properly adjusted at both the computer and
>>>> K3 that it will be fine.
>>>>
>>>> I hope that they add the ability to monitor Transmit signal on the
>>>> P3 to see how it looks going out. however you can see your real signal
>>>> by watching your signal on the many online SDR's, http://websdr.org/,
>>>> that have waterfall displays in real time.
>>>>
>>>>
>>>> David Moes
>>>> VE3DVY
>>>>
>>>>
>>>> On Thursday 02/10/2014 at 9:01 am, "Joe Subich, W4TV" wrote:
>>>>
>>>>>
>>>>>
>>>>>> risk is any off frequency noise from the sound card, harmonics etc
>>>>>> will also get transmitted not really a big issue if the sound card is
>>>>>> good quality.
>>>>>>
>>>>>
>>>>> Not quite accurate ... one can have a professional quality sound card
>>>>> and if the levels are too high, the connections are not correct, the
>>>>> ground gets opened, one has a significant degree of common mode RF on
>>>>> the feedline, one has power supply issues, etc. DATA_A can be very
>>>>> badly distorted/wide. AFSK A is not subject to those issues as long
>>>>> as the narrow filter (CONFIG: AFSK TX) is enabled.
>>>>>
>>>>> 73,
>>>>>
>>>>> ... Joe, W4TV
>>>>>
>>>>>
>>>>> On 2014-10-02 7:30 AM, david Moes wrote:
>>>>>
>>>>>>
>>>>>> With AFSK-A the K3 has very a narrow DSP filter to maintain a really
>>>>>> good transmit IMD so you need to keep the modulating frequencies
>>>>>> within the chosen preset filter range 1275 in my setup. You can use
>>>>>> the waterfall to tune but you need to use DATA-A instead of AFSK-A risk
>>>>>> is any off frequency noise from the sound card, harmonics etc will also
>>>>>> get transmitted not really a big issue if the sound card is good
>>>>>> quality. I found that with the P3 the markers lined up with the mark
>>>>>> frequency so tuning with the VFO was quite convenient without the P3 I
>>>>>> may have been more tempted to use Data-A and tuning with the mouse
>>>>>>
>>>>>> David Moes
>>>>>> President: Peterborough Amateur Radio Club.
>>>>>> dmoes at nexicom.net
>>>>>> VE3DVY, VE3SD
>>>>>>
>>>>>> On 10/2/2014 06:32, David Cole wrote:
>>>>>>
>>>>>>>
>>>>>>> Why only tune the radio, and not use the Waterfall?
>>>>>>>
>>>>>>
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