FlexRadio's CW Failings

Gerald

All radios have their good and failed points. My Omni 7 is great at CW but Ssb/am send and receive failed after 2 years of light use. The rest of the radio is perfect. Apparently TT contracted with a one-off jobber in China for the ssb /am module who walked after the batch. So radios can approach perfection but not in everything. For what Flex chose to do, they’ve done an outstanding job. I’ll use them for their outstanding performance items and other radios for theirs’

K9SO

Duane_AC5AA

Dwayne_AB6A

Shortly after this post went out, Flex did a technical survey of its owner/user based and subsequently published the results...

Survey Results

The following results help us understand where the true value is for FlexRadio owners. While we will not be able to address all of these things as quickly as we would like, this information is invaluable in helping us make well-informed decisions as to how we prioritize and allocate resources most urgently.

The survey responses said that the most important desired enhancements were to provide additional noise mitigation, as over 80% of respondents rated this with either a 4 or 5 on the scale of relative importance to them.

The second and third most important issues were pre-distortion (69.4% rated with either 4 or 5) and to resolve the DAX issues (62% rated with either 4 or 5) .

We were not surprised to see the desire to resolve the longstanding DAX issues to improve performance and stability, and work is already underway here to address this; however, the survey was very helpful in revealing the relative importance of noise mitigation and pre-distortion. We have heard these messages loud and clear and have already begun discussions on next steps to make improvements in these areas of performance.

This does not mean that we won’t devote any resources to the items that did not receive the highest response rates, as we will always look for opportunities to improve in these areas as well. FYI, below are the percentage of customers that gave a 4 or 5 rating to these other items related to SmartSDR v2 and v3 (in survey order):

Zero Beat CW - 29.3%
All Mode Squelch - 26.7%
Resolve Thumb DV dongle for D-Star - 13.9%
Integrate Rotor Control into SmartSDR - 33.4%
SmartLink sharing to allow multiple SmartLink accounts for a single radio - 24.9%
Add Maestro control function to SmartSDR for Windows - 39.1%
Voice Macros - 44.6%
Record Audio from SmartSDR for Windows to desktop file - 47.9%
Integrated antenna switch control - 45.7%
Band edge markers on panadapter - 51%
CW transmit while in SSB mode - 18.6%
Upgrade radio remotely over SmartLink - 29%

Once again we would like to thank you for your overwhelming support of FlexRadio. We will continue to work hard to advance your radio into the future.

73s,

FlexRadio Team

Burt Fisher

Companies provide features few need because it is easy for them to do so. Icom 7300 has an audio scope which is useless. Flex 3.0 provides multi op (receive), I wonder how many need that.

Jon_KF2E

...and how many of these have been addressed?

Lionel

Noise mitigation... NR, WNB and/or NB as I look at 75m this morning 1500z and S6 background, broadband - looks like white noise - not a single source.  Yes, more work on noise.

CW QSK works okay in my daily use.  At 25 wpm, adj AGC-T, AGC Fast, and filtering works to allow between dot/dash signals thru.  Kind of tricky and kind of an art form.

Dan Trainor

Is there a master / tracking list of all the known CW issues? 

Andrew Thall

I have a 6500 and can clearly say that it has the best receiver I have ever operated in my 46 years in the hobby.  Unfortunately, the CW deficiencies mentioned in this thread are making me give serious thought to selling the 6500 and go with the Elecraft K-4.  I'll make that decision once a good friend (and avid CW operator) gets his K-4 and gives me his evaluation.

Dan Trainor

It will be interesting to see how the K-4 performs.  But, Elec raft already has these CW features and performance now, so I think Flex is way behind even before the K-4 comes to market. 

Dwayne_AB6A

What are we comparing? K4 FAQ states sampling rate of 122MhZ which is somewhat disingenuous given we know nothing of sample bit rates compared to the 6600+ of 245 Mega Samples Per Second... IMO, the engine of their SDR is less than half the performance of a 2+ year old Flex and that makes it somehow better? if they want to sell an SDR, they need to start speaking the same language.

Dan Trainor

This thread was not about sampling rates.  The thread is about Flex CW short comings.  Even the most basic Icom has better CW performance and features.  So the thread is not about K-4 either, it is a long thread discussing Flex CW Failings.

Joe N3HEE

Bill -VA3WTB

A Flex is designed for the highest performance. The relays used in a Flex will out last any pin diodes and have fewer problems according to examples research data.

Joe N3HEE

To clarify, Flex uses a PIN diode in the transmit path and reed relay in the receive path.  The reason is to eliminate introducing IMD products into the receiver.

The mean time between failure of a PIN diode is extremely high at around 1,000,000,000 hours at normal operating temps ! 

A typical small reed relay will have a failure rating in the 10's of millions of cycles which is good in most cases.  However, running high speed QSK CW for many years on end might cause the reed relay to fail before it's time ! 

Who's going to do the math ?  

Doug Hall

Bill -VA3WTB

Floyd Sense

roelandjansen

I'm using several ICOMs and the audio scope is actually pretty useful when it comes to digital modes (including CW by the way). Referring to the 7300,9700 and 7851 in my case. It might be useless for you, for others it is definitely not.

bobby

This must be a very dated survey since nothing about profiles even was listed on it.