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Re: [TenTec] SDR's and TT (topic altered)

To: "'Discussion of Ten-Tec Equipment'" <tentec@contesting.com>
Subject: Re: [TenTec] SDR's and TT (topic altered)
From: "rick@dj0ip.de" <Rick@DJ0IP.de>
Reply-to: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: Mon, 7 Dec 2015 15:24:59 +0100
List-post: <tentec@contesting.com">mailto:tentec@contesting.com>
Interesting comments and food for thought, Duane.

I once ran an entire CQWW DX CW contest with the Orion on a shelf, almost
out of reach and the Remote tuning knob next to the keyboard.  Band change
was handled by the logging program.  When it was all over and done, I
thought about it and could not remember ever touching the radio.  Perhaps I
occasionally hit the AF or RF gain but I couldn't remember doing so.

On the Eagle I find I must work with the RF Gain control.  I suppose the
dynamic range of the AGC was better on the Orion.  Other than that, I really
don't touch the radio much during the contest.  I almost always run the
bandwidth as tight as it goes.

Based on that, the single Flex knob might be enough, but on SSB, I actually
do work with the bandwidth and bandpass a bit more.  So the T-MATE-2 would
probably be enough... if Flex would only write drivers for it.  But they
won't and most likely never will.  The next step up is the Maestro and I
find that ludicrous!  With that they have priced themselves out of the entry
level and even mid-range market.

73 - Rick, DJ0IP
(Nr. Frankfurt, Germany)



-----Original Message-----
From: TenTec [mailto:tentec-bounces@contesting.com] On Behalf Of Duane
Calvin
Sent: Monday, December 07, 2015 3:16 PM
To: 'Discussion of Ten-Tec Equipment'
Subject: [TenTec] SDR's and TT (topic altered)

That recovery is not in real time, and I don't know the exact delay (it's
small) but you can hear the other station (or others) in the RX while
transmitting, between CW elements.  So, maybe you hear him half a character
later than in a "realtime" rig, but I suspect it's a shorter time than the
human recovery time ("oh, wait, someone trying to break . . .")  Steve,
N5AC, described it to me at HamCom this year - it's pretty sophisticated,
and the result at the user's end is to not even notice a delay.   I run QSK
all the time, and in use, it's not noticeably different from any TT rig
other than you can actually hear the other guy better.  (That audio thing
Barry mentioned.)  Regarding the lack of knobs, I can't argue there.
Sometimes I miss reaching for a knob to tweak something, but I've found it's
more rare than I thought it would be.  I have the "FLEXcontrol" (single
knob, assignable to 4 functions) and I use it almost exclusively for tuning.
I'm very pleased with my 6500 - I knew it would take a heck of a rig to make
me happy after the Orion, but, other than doing more computer diddling than
I'd like on occasion when setting up new digital modes, I really like it.

        73, Duane

Duane Calvin, AC5AA
Austin, Texas
ac5aa@ac5aa.com 

-----Original Message-----
From: TenTec [mailto:tentec-bounces@contesting.com] On Behalf Of Barry N1EU
Sent: Monday, December 7, 2015 7:59 AM
To: Discussion of Ten-Tec Equipment
Subject: Re: [TenTec] TenTec Digest, Vol 156, Issue 4

I'm not sure that's the right question to ask because recovery doesn't
necessarily happen in real time.  The Flex T/R cw recovery is really a mind
blower for an SDR.  But does it necessarily mean you can do actual QSK and
hear someone else trying to break you in real time?  I think there's still
receive latency so that even with the receiver recovering, it still lags
real time signals by 150msec (or whatever).

Barry N1EU

On Mon, Dec 7, 2015 at 8:50 AM, rick@dj0ip.de <Rick@dj0ip.de> wrote:

> Paul, when you release the PTT and the green line drops, how long does 
> it take for the receiver to recover?
>
> 73 - Rick, DJ0IP
> (Nr. Frankfurt, Germany)
>
>
>
> -----Original Message-----
> From: TenTec [mailto:tentec-bounces@contesting.com] On Behalf Of Paul 
> Christensen
> Sent: Monday, December 07, 2015 2:38 PM
> To: 'Discussion of Ten-Tec Equipment'
> Subject: Re: [TenTec] TenTec Digest, Vol 156, Issue 4
>
> > Sorry Barry, latency measured on the Anan does not necessarily apply 
> > to
> the FLEX 6000.
>
> I made timing and latency measurements of my Flex 6700 using an 
> Agilent 4-channel DSO.  I captured the data and uploaded the DSO 
> graphic
images.
> Keep an eye on the PTT trace from the external keyer as the timing
> reference.    QSK performance has improved further since the date of these
> measurements.  QSK performance is at least as good as the K3 and the many
> Ten Tecs I've owned.   It is fast.  At 40+ wpm, I don't feel like I'm
> dragging characters behind me due to any latency, and there are no 
> headphone audio thumps or clicks in CW T/R transitions.
>
>
> https://community.flexradio.com/flexradio/topics/flex_6700_cw_keying_v
> _elecr
> aft_k3
>
> Paul, W9AC
>
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