[aprssig] APRN news from Dayton!

[Stephen H. Smith]

On 5/23/2011 2:17 PM, Bill V WA7NWP wrote:
>> However, there is an alternative.
>>
>> IP-Sound is a Free application for audio exchange client to client over a
>> TCP/IPv4 network (Lan/Internet). The main purpose for the existence of
>> IP-Sound is to provide low quality audio 8-16kHz, with low latency for use
>> together with remote control software for "ham" radio amateur equipment.
>> IP-Sound is developed by SM5VXC.
>>
>> It can be used to transport the audio part of a ham remote-control setup
>> (i.e. the mike and speaker audio) end-to-end over a network or Internet
>> connection. The advantage of IP-Sound over systems like Skype, MS Netmeeting
>> or Echolink is that it can use lossless codecs that won't mangle the
>> phase/amplitude integrity of audio signals received by the sound card. This
>> is critical to operating modes like PSK31 and SSTV.
> If an alternate tool is going to be used for the images, why not just
> send the picture as digital data instead of analog data on top of an
> VOIP audio system...
>


Because we persist in using analog FM radios, intended for voice,  on the RF 
links.    As long as we want RF<-->Internet<-->Rf  links to be transparent to 
analog radios, the Internet links need to use this kind of analog kludge.