[aprssig] APRN news from Dayton!

[Stephen H. Smith]

On 5/26/2011 10:25 AM, Scott Miller wrote:
> I never noticed that!  I'll have to try adding the PD modes when I get a chance.
>
> Scott
> N1VG
>


Consider the "narrowband" MP73-N format as well.  There is an increasing amount 
of interest in this mode on 30 meters. Its occupied bandwidth of only 500 Hz 
makes it the only legal format for SSTV (in the US at least) on this non-voice 
band.   There is now even a Yahoo! group dedicated to 30meterSSTV activity.

The mode is also useful on other bands since you can receive it through the 
variable-bandwidth IF system on some modern transceivers screwed down to about 
800 Hz - gives you a huge SNR advantage under marginal conditions compared to 
the usual 2.1-2.8 KHz SSB bandwidth.



> On 5/25/2011 5:47 PM, Stephen H. Smith wrote:
>> On 5/25/2011 1:35 PM, Scott Miller wrote:
>>>
>>> What do you use for PD160 decoding? I didn't see that on MMSSTV or MixW.
>>>
>>
>> mmSSTV has a large number of "hidden" modes. In either the RX or TX
>> panel, right -click any of the mode buttons. You will see a huge list of
>> modes, along with their resolution and transmission time, that can be
>> assigned to any of the buttons in place of the default one. The
>> greyed-out entries in the list are ones currently assigned to a visible
>> button. Even if the mode doesn't show on a button, the receive side will
>> automatically receive ANY of them. Assuming of course you haven't
>> enabled single mode receive by clicking a button other than "AUTO"
>>
>> [I have one of the TX mode buttons set to MP73-N for 30 meter use, and
>> one set to PD160 for "HD" (640x480 full VGA) mode on 20 & 40 meters.]
>>
>> MixW, as of Ver 2.20, supports the MPxx-N narrowband modes, but doesn't
>> support any of the modes with image size higher than the standard 320x240.
>>
>>
>> -------------------------------------------------------------------------------
>>
>>
>> -- 
>>
>> Stephen H. Smith wa8lmf (at) aol.com
>> EchoLink Node: WA8LMF or 14400 [Think bottom of the 2M band]
>> Skype: WA8LMF
>> Home Page: http://wa8lmf.net
>>
>> ===== Vista & Win7 Install Issues for UI-View and Precision Mapping =====
>> http://wa8lmf.net/aprs/UIview_Notes.htm#VistaWin7
>>
>> *** HF APRS over PSK63 ***
>> http://wa8lmf.net/APRS_PSK63/index.htm
>>
>> "APRS 101" Explanation of APRS Path Selection & Digipeating
>> http://wa8lmf.net/DigiPaths
>>
>>
>>
>>
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>
>
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