RE: [DSTAR_DIGITAL] Re: Compression/encoding on data-only transmissions

2009-05-13 Thread Woodrick, Ed
Embedded From: dstar_digital@yahoogroups.com [mailto:dstar_digi...@yahoogroups.com] On Behalf Of mungewell Sent: Wednesday, May 13, 2009 2:37 PM To: dstar_digital@yahoogroups.com Subject: [DSTAR_DIGITAL] Re: Compression/encoding on data-only transmissions I'll have a look as D-RATS. So am I ri

Re: [DSTAR_DIGITAL] Re: Compression/encoding on data-only transmissions

2009-05-13 Thread Dan Smith
> So am I right in my understanding that a DStar 2m radio (such as > IC-V82 + UT-118) will send (or can be made to send) unadulterated > data over the voice+data channel? Yes*. The footnote being that you can't send any byte sequence. Since the radios use XON/XOFF flow control, those values are

Re: [DSTAR_DIGITAL] Re: Compression/encoding on data-only transmissions

2009-05-13 Thread Nate Duehr
On Wed, 13 May 2009 18:37:18 -, "mungewell" said: > So am I right in my understanding that a DStar 2m radio (such as IC-V82 + > UT-118) will send (or can be made to send) unadulterated data over the > voice+data channel? Probably not the IC-V82 + UT-118. That rig has no serial port, AFAIK.

Re: [DSTAR_DIGITAL] Re: Compression/encoding on data-only transmissions

2009-05-13 Thread Dan Smith
> Probably not the IC-V82 + UT-118. That rig has no serial port, > AFAIK. It's just a commercial HT with an add-on board. To do the > low-speed data you need one of the later rigs with a serial port on > it. The V/U82s do have a serial port on them. It's down at the bottom of the rig in the mo

RE: [DSTAR_DIGITAL] Re: Compression/encoding on data-only transmissions

2009-05-13 Thread Woodrick, Ed
Oh yeah, you really don’t have much control over when the radio transmits. You really don’t even know if it has transmitted anything. If the channel is busy, the radios will tend to hold off transmitting, so you don’t walk all over everything. But if two radios are both trying to send while some

Re: [DSTAR_DIGITAL] Re: Compression/encoding on data-only transmissions

2009-05-13 Thread John D. Hays
With a tip of the hat to Dan (KK7DS) and Pete's (AE5PL) applications that use the extra data space in the D-STAR DV signal, I don't believe it was ever intended to be a reliable and transparent data service. It's great to have a place to send some data along with voice data (and its FEC), but

Re: [DSTAR_DIGITAL] Re: Compression/encoding on data-only transmissions

2009-05-14 Thread Steven Samuel Bosshard (NU5D)
Would POCSAG be useful in place of FEC for short data exchanges ? de nu5d Dan Smith wrote: >> So am I right in my understanding that a DStar 2m radio (such as >> IC-V82 + UT-118) will send (or can be made to send) unadulterated >> data over the voice+data channel? >> > > Yes*. > > The footno

Re: [DSTAR_DIGITAL] Re: Compression/encoding on data-only transmissions

2009-05-14 Thread Nate Duehr
On Wed, 13 May 2009 17:19:15 -0700, "Dan Smith" said: > > Probably not the IC-V82 + UT-118. That rig has no serial port, > > AFAIK. It's just a commercial HT with an add-on board. To do the > > low-speed data you need one of the later rigs with a serial port on > > it. > > The V/U82s do have