1471Re: [V4Protocol] Operation Questions/ Observations today.
- Aug 1, 2011Hi Owen:
I'm using a TR7 for all my digi modes and CW most of the time. My
tested T>R latency runs about 90-110mS. Suspect others using much newer
equip. I do have a Tony Parks SDR IF panadapter running on my r4 tho :)
Are the Flex rigs able to get below the 250mS T-R Latency threshold?
That could be the root of the problem.
Owen Mitchell wrote:
> Ted, it would be nice to know what radio, you and others are running.
> It seems all Flex SDR Radios , I know of, are never able to complete
> the task of receiving and transmitting the V4 system using ARQ. FEC
> seems to work fine.
> Would like to hear from Flex users on their problems.
> Owen KB5XE Flex 5000
> --- On *Sun, 7/31/11, Ted Trostle /<ttrostle35@...>/* wrote:
> From: Ted Trostle <ttrostle35@...>
> Subject: Re: [V4Protocol] Operation Questions/ Observations today.
> To: V4Protocol@yahoogroups.com
> Date: Sunday, July 31, 2011, 4:47 PM
> I basically agree with your observations as my experience is
> similar. The frustrating part I have is that the connection seems
> to go idle and I never become an ISS and then it times out. I am
> beginning to believe that signal level, noise and QSB impact the
> timing sequence of the protocol steps and the expected transition
> and exchange is not compatible with the conditions. If I switch
> to FEC connections every time are very good and the exchange of
> the conversation flows relatively smooth. When QSB hits and parts
> of words are missed, just like in CW you can fill in the blanks.
> I would like to test V4 with a rock solid RF connection. With all
> respect to Rick I'd bet it would be perfect.
> Ted, WB2LOU
> On Sun, Jul 31, 2011 at 6:27 PM, captcurt@...
> Hello to all:
> Several times now, during unsuccessful attempts, I will do a
> ARQ Call to a Callsign and get a CONNECTED TO message and the
> system starts to cycle the (I think) IDL . The ARQ State is
> cycling from IRSWaitLeader to TransmitACK (think that is right
> msg) which is orange.
> So I type in some text and hit CTRL CR and the text goes to
> the Session text box but the OB Que never changes from 0 to
> show the text was queued.
> Is this because the text wont go into the queue until I am
> ISS? I first thought it would queue up and wait for the ISS or
> does it just stay in the buffer?
> It seems when the system gets into this cycling loop it never
> exchanges from IRS to ISS and I never am receiving anything
> from the other station either. Constellation was score 58-60
> S/N 0 or -1
> Does this just sound like a quality of signal /strength issue
> in the exchange of ACK etc?
> The basic decoding seems to be pretty good..even printing CQ
> Requests that are barely heard. But synching up and exchanging
> is much more sensitive.
> Is there some typical lower threshold of S/N or Constellation
> score that has been seen so far?
> You cannot change history, but you can make history !
> Education is the only legal cure for Ignorance. The Stupidity of
> many is incurable.
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