Official Position on Adaptive Predistortion

Wayne

We stand behind you, that way when we turn around to run we will be in Front!

Wayne

Wayne

Give me a break they wouldnt even spend extra to put a standard compatible mic jack on the M models, and used cheap power poles so they wouldnt have to provide fuses, what makes you think their going to do something that costs them money when most of the competition are not doing it either.

W2PP

Gene - K3GC

Bill -VA3WTB

Gene, I think it is a spoof.
The Flex needs no mods. It needs to be added to SSDR software.

Gene - K3GC

Thanks Paul
Rob W1AEX referred me to AC2IQ.  It looks entirely credible to me - most certainly not a spoof.

I am very leery when it comes to making a hardware mod to the 6500.  Not because I distrust the author but because of the effect on possible resale down the line.
Also, being "chicken" I would to see some other brave soul do it first.:).

Bill -VA3WTB

The Flex already has the taps inside. Flex has stated that everything will be be done inside the radio and the software will be implemented. So no black box need. This was planned for when the 6xxx radios were designed.

Bill -VA3WTB

I don't believe they used power poles to avoid inline fuses. With the fuse inside, the power to the radio was done correctly.

Gene - K3GC

I wonder how many sales have been lost to Anan for this issue alone.  I know they make a lot of mileage over this one issue.  It sounds a lot sexier than it  truly is in the real world.
The flex transmitter puts out a very clean signal indeed but. . . . 

K2CB Eric Dobrowansky

It is not a spoof. He is a very knowledgeable design engineer who has designed and built things others can only dream about. Dave had a complete home brew pre-distortion rig on the air long before ANAN software had APD. There was a picture of it on his page at one time.

Seeing it on the air (on our SDR receivers) for the first time years ago, was quite a memorable event. 50db over S9 on 75m ssb, and not hearing a thing on the opposite sideband.

I know of one Flex 5000, and one 6500 on the air with his design. As good as ADP on the ANAN. And via hardware, so no ADP software needed.

K2CB Eric Dobrowansky

Please tell us, where inside is said tap? If not outside already, it will require some sort of mod. So another words, it will never happen. ****, for that matter, all the things we’ve been waiting for the past 4-5 years, will probably never happen!

Bill -VA3WTB

Incorrect, Gerald said everything is all in the radio as is. Keep in mind Flex may not use the exact way Anan does it,,but the same result.

One reason Flex has not been in such a hurry to implement this is the demand has not been there, and Flex already transmits the cleanest in the market apart from the Anan with APD turned on.

The early Anans really needed it because they were really dirty. But now with the Anan 7000 it could do just fine without it as they have cleaned things up a lot.

Lee - N2LEE

Gene, I spent 20 years in product marketing and development and here is a little lesson in product marketing.

- Change the Discussion in your favor
- Build up your strength, play down your competition

ADP is a the biggest card Anan has to play. So they make it a big deal because it's their only strength. 

Chasing the feature check box game is a no win situation. Flex has a strategy and right, wrong or indifferent they need to stick to it. 

K2CB Eric Dobrowansky

Bill, there are other non-APD transceivers that are just as clean; if not cleaner. Especially the Icom 50v PA radios, such as the 7700 and 7800. They are far ahead of the Flex in tx signal cleanliness. Obviously, comparing a 50v PA to a 14v PA is like comparing apples to oranges. But even the 7600 with its 14v PA is on par wirh the 6500. I'd be more than happy to do an a/b/c comparison on the air. I truly question the statement that the 6000 series was designed for APD from the start. Show me a schematic diagram and prove me wrong....... I don't recall Gerald making that statement directly. I seem to recall someone quoting Steve in one fashion or another, but even that was a vague statement. Something to the effect that it might be possible using the RXA input with software steering, similar to how it is done on the ANAN radios. Stating that it was designed from the start sounds like a huge stretch of the imagination. In not here to bash Flex in any way. I still own two 6000 series transceivers. And as Mike W can attest, even with my dissatisfaction in regards to Flex's speed of development, or lack thereof, I still recently recomnended my good ftiend to purchsse a 6400 and Maestro combo..... but the Flex Kool-Aid is getting a little strong lately, and a reality check is once again in order.

Bill -VA3WTB

Bill -VA3WTB

I don't believe the Icoms are access of 40db down,,our Flexes are.

Richard McClelland, AA5S

Obviously some marketing points to be gained, if nothing else.  I want to know when APD will be available for the Flex 1500 :-)  Not.

Bill -VA3WTB

K2CB Eric Dobrowansky

Bill, I know the schematic is "not for our eyes".  On the same token, how can one so sure it was "designed from the start" without actually seeing said schematic? 

As the old saying goes - trust, but verify.  I'd like to believe the statements you quoted, but based on past experience, I would prefer to verify.

Bill -VA3WTB

Because Flex says it is,,simple...

Wayne

You want to buy some stuff Bill its all in pristine shape cause I say so no verification needed oh those broken knobs they are not broken thats the new style cause i said so.

Bill -VA3WTB

Because both of you are saying Gerald is not truthful and misleading you is were I pull the plug,,that's over the line.
I have never known Gerald or Steve lie to people the way both of you say they have.

Gene - K3GC

KY6LA_Howard

Wayne

I never said not truthful i said trust but verify which is how i do everything and is required and proven each day in todays world when i was growing up it did not apply but now it does the world has changed.

Bill -VA3WTB

Wayne,,it is verified, Steve answered the question asked,,,nothing more needed.

KC2QMA_John

Varistor

As actual test data shows, Flex radios are not any different than similar DUCs: http://www.ab4oj.com/sdr/flex/6700notes.pdf http://www.ab4oj.com/icom/ic7610/7610notes.pdf Cleaner transmitters are good for everyone, particularly during major contests when the bands are wall to wall full of stations.

Mark K1LSB

The 6700 test in that link was conducted 4 years ago using SSDR V1.3.8.  You're comparing those results to the ICOM 7600 tested only a month ago.  And generally speaking, the 6700 2-tone TX IMD numbers are still several dB better than the IC-7610.  I'd be interested in seeing the same tests run again on the 6700 running a current version of SSDR.