400Hz in all cases was the receive bandwidth setting.
On Tue, Dec 8, 2015 at 10:08 AM, Carl Moreschi <n4py3@earthlink.net> wrote:
> That's a function of the receive filter used. The narrower the filter,
> the more latency. What receive filter were you using?
>
> Carl Moreschi N4PY
> 58 Hogwood Rd
> Louisburg, NC 27549
> www.n4py.com
>
> On 12/8/2015 8:41 AM, Barry N1EU wrote:
>
>> I just measured 170msec latency on the 6500 in cw receive. It's a lot
>> (too
>> much for serious contesting IMHO) but it's not 350msec.
>>
>> My methodology was to transmit a single dit using another rig and used a
>> microphone/soundcard to record the tx sidetone of rig 1 and then the
>> received dit on rig 2.
>>
>> For comparison, my Orion II measured 45msec and my ANAN-100D SDR 70msec
>> for
>> cw rx latency.
>>
>> 73, Barry N1EU
>>
>> On Mon, Dec 7, 2015 at 8:23 AM, Barry N1EU<barry.n1eu@gmail.com> wrote:
>>
>> I will personally measure the latency of the Flex 6500 and get back to
>>> you. I'm not believing 350msec at this point.
>>>
>>> 73, Barry N1EU
>>>
>>> On Mon, Dec 7, 2015 at 7:59 AM, rick@dj0ip.de<Rick@dj0ip.de> wrote:
>>>
>>> Sorry Barry, latency measured on the Anan does not necessarily apply to
>>>> the
>>>> FLEX 6000.
>>>>
>>>> Less than a year ago it was 350mS on the 6xxx, as measured by Rob
>>>> Sherwood.
>>>>
>>>> We've had this discussion before and Rob jumped in and confirmed the 350
>>>> number.
>>>> I'm not sure which reflector it was on. Might have been here, might
>>>> have
>>>> been on the Eagle or OM7 reflector.
>>>>
>>>> As I said, it may have changed but not long ago it was at 350.
>>>> Until someone steps up and states that (s)he has measured it and found
>>>> it
>>>> better, that's the number I'm sticking with for the Flex 6xxx radios.
>>>>
>>>> FB on the Anon latency numbers.
>>>>
>>>> At 25mS you can still hear in between dits at 40 wpm but just barely.
>>>> When you go above that, you no longer hear between dits.
>>>>
>>>> After about 40 or 50ms latency, you (or rather I and a few friends) can
>>>> no
>>>> longer transmit clean CW by listening to the real time signal. In that
>>>> case
>>>> we have to mute the radio and listen to the sidetone of the keyer
>>>> because
>>>> the delay is annoying and confuses the OP.
>>>>
>>>> Delay is still an issue but it has gotten a lot better.
>>>>
>>>> 73 - Rick, DJ0IP
>>>> (Nr. Frankfurt, Germany)
>>>>
>>>>
>>>>
>>>> -----Original Message-----
>>>> From: TenTec [mailto:tentec-bounces@contesting.com] On Behalf Of Barry
>>>> N1EU
>>>> Sent: Monday, December 07, 2015 1:49 PM
>>>> To: Discussion of Ten-Tec Equipment
>>>> Subject: Re: [TenTec] TenTec Digest, Vol 156, Issue 4
>>>>
>>>> Ha, I love a good tussle ;-)
>>>>
>>>> I measured it on an ANAN-100D about a year ago. I've seen numbers for
>>>> the
>>>> Flex 6K that are similar. Latency of about 100-150msec for cw receive
>>>> and
>>>> ssb receive and transmit. CW transmit latency in the ANAN and Flex is
>>>> very
>>>> low (on the order of tens of msec) because they both optimize it in the
>>>> FPGA.
>>>>
>>>> 73, Barry N1EU
>>>>
>>>> On Mon, Dec 7, 2015 at 5:45 AM, rick@dj0ip.de<Rick@dj0ip.de> wrote:
>>>>
>>>> Yes, it used to be much worse.
>>>>> It is now 350 mS unless there has been some VERY recent change.
>>>>>
>>>>> Barry, if you say it's better, please specify who measured it and
>>>>> approximately when.
>>>>> Otherwise I strongly disagree.
>>>>>
>>>>> I am quoting recent measurements by Rob Sherwood.
>>>>> Somewhere buried in 10,000 emails I have a recent email from Rob
>>>>> confirming this.
>>>>> It was while running one of the big contests earlier this year.
>>>>>
>>>>> I'm not talking about old 5000 rigs, I mean the new flagship line,
>>>>> 6xxx.
>>>>>
>>>>> 73 - Rick, DJ0IP
>>>>> (Nr. Frankfurt, Germany)
>>>>>
>>>>>
>>>>>
>>>>> -----Original Message-----
>>>>> From: TenTec [mailto:tentec-bounces@contesting.com] On Behalf Of Barry
>>>>> N1EU
>>>>> Sent: Monday, December 07, 2015 11:29 AM
>>>>> To: Discussion of Ten-Tec Equipment
>>>>> Subject: Re: [TenTec] TenTec Digest, Vol 156, Issue 4
>>>>>
>>>>> Rick, the latency on the latest SDR offerings has come WAY down,
>>>>> especially on the Flex 6000 series. They ARE contest capable.
>>>>>
>>>>> I agree on the knobs. I applaud the Flex Maestro interface panel - I
>>>>> think it's a harbinger of products to come in the future, where many
>>>>> vendors can offer various front panels that can be interfaced to many
>>>>> different SDR types. Or someone could write the code to use an Orion
>>>>> front panel to control an SDR, etc.
>>>>>
>>>>> For me, the draw of the direct sampling SDR radios (ANAN, Flex 6K) is
>>>>> that their receivers simply sound better than the best superhet/dsp
>>>>> i.f.
>>>>>
>>>> radios.
>>>>
>>>>>
>>>>> With the introduction of the not-overly-impressive IC-7300, perhaps
>>>>> we'll be seeing several direct sampling (DDC/DUC) bundled in a fully
>>>>> knobbed self-contained box in the next 1-3 years.
>>>>>
>>>>> 73, Barry N1EU
>>>>>
>>>>> On Mon, Dec 7, 2015 at 7:24 AM, rick@dj0ip.de<Rick@dj0ip.de> wrote:
>>>>>
>>>>> EXCEPT . . . for latency and lack of affordable knobs.
>>>>>>
>>>>>> Last reviews I saw still had turnaround latency between TX and RX at
>>>>>> 350 mS.
>>>>>> If both ops are running SDR, and trying to run full QSK, that's 0.7
>>>>>> seconds.
>>>>>> It's gonna sound like "Chop Phooey" on the air!
>>>>>>
>>>>>> The set of knobs (Maestro) for the lowest cost $2000 Flex Radio (in
>>>>>> the class that interests most of us) is $1200 or so. OR...the big
>>>>>> single knob from Flex will set you back $200 if you are willing to
>>>>>> wait long enough to get one.
>>>>>>
>>>>>> A decent 3rd party set of knobs, such as the Wood Box Radio T-MATE-2
>>>>>> probably has enough knobs for most of us, but it will set you back
>>>>>> $300 AND Flex software won't support it. You need a 3rd party
>>>>>> software (i.e. N4PY Radio Control Software) to use it with your Flex.
>>>>>> Get it all set up and working with your WIN7 computer, then upgrade
>>>>>> to
>>>>>>
>>>>> WIN10 and watch the "real"
>>>>>
>>>>>> fun begin.
>>>>>>
>>>>>> Other than that, there's not much wrong with the current crop of SDR
>>>>>> radios...
>>>>>>
>>>>>> 73 - Rick, DJ0IP
>>>>>> (Nr. Frankfurt, Germany)
>>>>>>
>>>>>>
>>>>>> -----Original Message-----
>>>>>> From: TenTec [mailto:tentec-bounces@contesting.com] On Behalf Of Kim
>>>>>> Elmore
>>>>>> Sent: Monday, December 07, 2015 2:40 AM
>>>>>>
>>>>>> There's absolutely nothing wrong with SDR; I don't fully understand
>>>>>> why so many people complain about it
>>>>>>
>>>>>>
>>>>>> -------
>>>>>>
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