[TenTec] TenTec Digest, Vol 156, Issue 4

[Paul Christensen]

Have a look at image #7 in the previous link.  The DSO is set to 20ms/div.
So roughly, the time from key-up to Rx audio is 70 ms.   I failed to state
at what Rx filter setting the measurement was taken but in all likelihood it
was where I do most listening which is a start at 2.8 kHz.  I narrow up
depending on conditions.  Filter width is one latency variable.    Again,
the measurement was taken nearly two years ago.  Latency may, or may not
have changed since then.  I doubt is has changed and gotten any longer but a
new measurement is needed to test performance after several
firmware/software updates.  In any event, the Flex 6700 is one of the best
CW QSK transceivers I've used.

Paul 

-----Original Message-----
From: TenTec [mailto:tentec-bounces at contesting.com] On Behalf Of
Rick at DJ0IP.de
Sent: Monday, December 07, 2015 8:51 AM
To: 'Discussion of Ten-Tec Equipment' <tentec at contesting.com>
Cc: rob at sherweng.com
Subject: Re: [TenTec] TenTec Digest, Vol 156, Issue 4

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 at 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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