[Lowfer] WD2XNS 137.750 JASON Mode
Douglas D. Williams
kb4oer at gmail.com
Sun Dec 29 09:55:27 EST 2013
Success!
https://dl.dropboxusercontent.com/u/33457409/wd2xns%20jasonmode.png
Thanks for letting me try a new mode (new to me anyway).
-Doug KB4OER
On Sun, Dec 29, 2013 at 9:43 AM, Douglas D. Williams <kb4oer at gmail.com>wrote:
> Almost got you this time. Both receivers got the word CALM, then most of
> your call, with different missing characters, lol.
>
>
> https://dl.dropboxusercontent.com/u/33457409/Screenshot%202013-12-29%2009.40.40.png
>
> D.
>
>
> On Sun, Dec 29, 2013 at 9:40 AM, John Andrews <w1tag at charter.net> wrote:
>
>> Doug,
>>
>> I don't think that sound card cal makes a lot of difference, as the
>> decoding depends on the frequency difference between successive tones.
>>
>> JASON does not have forward error correction, so fades and noise hits can
>> cause lost characters. On the other hand, it doesn't wallow around looking
>> for a re-sync, so the obliterations are usually confined just to the bad
>> signal period.
>>
>> It does make a decent weak-signal QSO mode. The character throughput is
>> better than QRSS3.
>>
>> John, W1TAG
>>
>>
>> On 12/29/2013 9:32 AM, Douglas D. Williams wrote:
>>
>>> Running it on two separate receivers. Got "2XNS" on one of them.
>>>
>>> Probably need to calibrate my sound card to get good results with this
>>> mode.
>>>
>>>
>>>
>>>
>>> On Sun, Dec 29, 2013 at 9:09 AM, <jrusgrove at comcast.net> wrote:
>>>
>>> JA
>>>>
>>>> Don't notice any 'nasties' on the signal during the frequency excursions
>>>> here ... how about at your locale? Would assume it is phase continuous.
>>>>
>>>> JR
>>>>
>>>>
>>>> ----- Original Message ----- From: "John Andrews" <w1tag at charter.net>
>>>> To: "Discussion of the Lowfer (US, European, &UK) and MedFer bands"
>>>> <
>>>> lowfer at mailman.qth.net>
>>>> Sent: Sunday, December 29, 2013 9:07 AM
>>>>
>>>> Subject: Re: [Lowfer] WD2XNS 137.750 JASON Mode
>>>>
>>>>
>>>> JR,
>>>>
>>>>>
>>>>> Decoding OK here...strong signal, obviously. For the group, the screen
>>>>> should show "JN" in the bottom left corner, indicating Jason Normal
>>>>> mode.
>>>>> Don't enable the Fast, Slow or Turbo options.
>>>>>
>>>>> JA
>>>>>
>>>>> On 12/29/2013 9:00 AM, jrusgrove at comcast.net wrote:
>>>>>
>>>>> Doug
>>>>>>
>>>>>> 137.750 is the center of the signal. I normally use cw mode with an
>>>>>> 800
>>>>>> Hz BFO. The program allows setting other BFO offsets. Signal (if
>>>>>> visible) should fall between yellow 'guardrails'.
>>>>>>
>>>>>> Jay
>>>>>>
>>>>>> ----- Original Message ----- From: "Douglas D. Williams" <
>>>>>> kb4oer at gmail.com>
>>>>>> To: "Discussion of the Lowfer (US, European, &,UK) and MedFer
>>>>>> bands"
>>>>>> <lowfer at mailman.qth.net>
>>>>>> Sent: Sunday, December 29, 2013 8:56 AM
>>>>>> Subject: Re: [Lowfer] WD2XNS 137.750 JASON Mode
>>>>>>
>>>>>>
>>>>>> For some reason, it won't let me select audio input device, but I
>>>>>> see
>>>>>>
>>>>>>> the
>>>>>>> blue bar on the left moving, so I assume it selected the proper mic
>>>>>>> port. I
>>>>>>> have random characters popping up in the window.
>>>>>>>
>>>>>>>
>>>>>>> On Sun, Dec 29, 2013 at 8:54 AM, Douglas D. Williams
>>>>>>> <kb4oer at gmail.com>wrote:
>>>>>>>
>>>>>>> Never used Jason before, but I downloaded it and got it running. I
>>>>>>>
>>>>>>>> assume
>>>>>>>> set the receiver to USB?
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> On Sun, Dec 29, 2013 at 8:41 AM, <jrusgrove at comcast.net> wrote:
>>>>>>>>
>>>>>>>> From the grooveyard of forgotten favorites ... WD2XNS will be
>>>>>>>>
>>>>>>>>> transmitting in Jason mode (normal speed) for the next couple
>>>>>>>>> hours. IIRC,
>>>>>>>>> first time I've run this mode with the phasing exciter > frequency
>>>>>>>>> doubler
>>>>>>>>>
>>>>>>>>>> Class D setup. Print out looks okay locally.
>>>>>>>>>>
>>>>>>>>>
>>>>>>>>> Reports appreciated.
>>>>>>>>>
>>>>>>>>> Jay W1VD WD2XNS WE2XGR/2 WG2XRS/2
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