[Elecraft] Slow-scan TV (SSTV) display on the P3 and PX3?

Mon Aug 18 10:35:16 EDT 2014

> At present the K3 has... let's call it an "oversight"... in the way
> that it memorizes data sub-modes. It correctly memorizes the
> last-used data sub-mode on each band, but not the bandwidth setting
> appropriate to that sub-mode. Instead, the bandwidth settings for
> *all* data sub-modes on *all* bands are overwritten by the settings
> for whichever sub-mode was most recently used on *any* band. This is
> often quite inappropriate, and inconvenient for anyone whose
> interests cover a range of data sub-modes.
>
>
> That problem needs to be fixed in the K3/KX3 firmware before moving
> on to upgrade to automate the display settings of the P3 and the
> PX3.

Agreed - and one of those user interface issues to which I referred
earlier in this thread.  DATA A and AFSK A/FSK D need separate default
bandwidth (2.8 or 4 KHz for DATA A, 500 Hz for AFSK A/FSK D) and the
last used BW/FC values need to be stored per sub-mode/band.

73,

    ... Joe, W4TV

On 2014-08-18 10:10 AM, Ian White wrote:
> I would agree with that... but first, there is another point that needs
> to be rationalized in the K3 (and, I presume, the KX3 also).
>
> DATA is not a single mode - it is only a "folder name" for a collection
> of different data sub-modes. Many of those sub-modes require quite
> different settings for the transceiver bandwidth and center frequency;
> and that is equally true about the optimum bandwidths for a visual
> display.
>
> At present the K3 has... let's call it an "oversight"... in the way that
> it memorizes data sub-modes. It correctly memorizes the last-used data
> sub-mode on each band, but not the bandwidth setting appropriate to that
> sub-mode. Instead, the bandwidth settings for *all* data sub-modes on
> *all* bands are overwritten by the settings for whichever sub-mode was
> most recently used on *any* band. This is often quite inappropriate, and
> inconvenient for anyone whose interests cover a range of data sub-modes.
>
>
> That problem needs to be fixed in the K3/KX3 firmware before moving on
> to upgrade to automate the display settings of the P3 and the PX3.
>
>
> 73 from Ian GM3SEK
>
>
>> -----Original Message-----
>> From: Elecraft [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of
> Joe
>> Subich, W4TV
>> Sent: 18 August 2014 13:17
>> To: Wayne Burdick
>> Cc: elecraft at mailman.qth.net
>> Subject: Re: [Elecraft] Slow-scan TV (SSTV) display on the P3 and PX3?
>>
>>
>> On 2014-08-18 1:10 AM, Wayne Burdick wrote:
>>> We're considering per-mode as well,
>>
>> I agree that per mode is more valuable than per band.  I'm nearly
>> always changing span when I change modes (10 KHz on CW, 20 KHz on
>> data, 50 or 100 KHz on Phone) but not generally changing span with
>> bands unless I've also changed mode.
>>
>> 73,
>>
>>     ... Joe, W4TV
>>
>>
>> On 2014-08-18 1:10 AM, Wayne Burdick wrote:
>>> We're considering per-mode as well, but at the moment we're
>> experimenting with per-band. Input welcome.
>>>
>>> Wayne
>>>
>>> On Aug 17, 2014, at 10:07 PM, Matt VK2RQ <matt.vk2rq at gmail.com>
>> wrote:
>>>
>>>> Would it make more sense for it to be per-mode rather than per-band?
>> For example, I can imagine on CW you might want to zoom in more than on
>> SSB. Maybe some P3 owners can comment?
>>>>
>>>> 73, Matt VK2RQ
>>>>
>>>>> On 18 Aug 2014, at 3:01 pm, Wayne Burdick <n6kr at elecraft.com>
>> wrote:
>>>>>
>>>>> We just added per-band SPAN settings to the PX3 (and will later add
> it
>> to the P3). We're also adding a menu setting to quantize the SPAN
>> selections to 2, 5, 10, 20, 50, 100, and 200 kHz. This behavior would
> be user-
>> selectable; the default would be continuously variable, as it is at
> present.
>>>>>
>>>>> For a lot of P3/PX3 users, the combination of these two changes
> will
>> result in less manipulation of the SPAN control, and will save some Fn
>> switches for other uses.
>>>>>
>>>>> Wayne
>>>>> N6KR
>>>>>
>>>>>
>>>>>> On Aug 17, 2014, at 9:45 PM, Jim Brown
>> <jim at audiosystemsgroup.com> wrote:
>>>>>>
>>>>>>> On Sun,8/17/2014 7:18 PM, Fred Jensen wrote:
>>>>>>> I'm still working at what the "ideal" span on my P3 would be, in
> the
>> NAQP SSB yesterday, I had it at 100 KHz and it seemed pretty good.
>>>>>>
>>>>>> I have five of the function keys programmed for different span
>> settings. The other three are Peak Toggle, Fixed Mode Toggle, and Noise
>> Blanker Toggle.
>>>>>>
>>>>>> I use 2 kHz for looking at the quality of CW signals, 10 kHz for
> most CW
>> pileups, 50 kHz, 100 kHz, and 200 kHz for contesting and general
> operating.
>> I did have 20 kHz programmed, but gave that up for the NB toggle.
>>>>>>
>>>>>> Before each contest, I'll run through all the bands and set up the
> span
>> and centering. 50/60 kHz is pretty good for Sprints and state QSO
> parties,
>> 100 kHz is good for most CW contests, 200 kHz is not wide enough for
> some
>> SSB contests.
>>>>>>
>>>>>> For 6M, I set a 200 kHz span from 50.080 to 50.280. This lets me
> see
>> CW, SSB, and JT65.
>>>>>>
>>>>>> 73, Jim K9YC
>>>>>
>>>>>
>>>>>
>>>>>
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