6400 Receive Antennas

HCampbell WB4IVF

Ken - NM9P

Roger_W6VZV

Ted VE3TRQ

To be fair to the 7610, it does have two ADCs, albeit I believe they are not quite equivalent to each other. The whole conversation about heat sinks on the 7610 ADCs clearly indicated two of them. And the 6400/6600 are also not free from heat sink issues. Both Flex and Icom make good radios, but none are perfect.

Greg N8GD

As usual, Ken arrives as the voice of reason.  That, along with his technical knowledge, excellent writing skills, and ability to make a complex subject easier to understand, makes him more than worthy of the title "Elmer."

Bill Roberts

As a ham of 54 years (read that "old man") and Flex owner since 2010 (Flex 5000 to 6300 to 6600 in 2018), I experienced no difficulty understanding the difference between 1 and 2 SCU radios or the front end/filtering differences between all models.  Now, I'm all for extending grace but I take minor exception to folks accusing Flex Radio with misrepresenting their products.  The product comparison table states that the 6300 and 6500 radios are single SCU and incapable of full duplex or diversity reception.  The 6600 and 6700 are capable on both counts.  More importantly, if a person is unhappy with his/her purchase decision, they DO have 30 days to return or upgrade the product.  Do I-K-Y do that?  When I consider how patient and kind Flex guys were to newbies like me, whether over the phone or at hamfests, I have difficulty hearing them accused of misrepresentation.

k9bm .

Ken - NM9P

Brad,  I think you will find, as I did with my 6500, that you have purchased an excellent rig.  Although there is a bit of a learning curve, once you master the panadapter, the settings for AGC-T, and Mic Profiles, you will be amazed at its performance, in spite of the initial letdown of expectations regarding the definition of the receiver(s).

I wouldn't be without my 6500, unless it was to upgrade to the 6600 some day in the not to distant future.

Good luck, and as I can be helpful, please contact me.

Ken - NM9P

Roger_W6VZV

OM I am a new 6400M owner/user and I have been totally loving the rig.  I am pretty sure that you will too.
de Roger W6VZV

Lasse Moell

Robert Lonn

Roger,, still have my FT-1000MP MarkV,, 200 watts and 80 watts Class A operation... And a Synchronous Detector,, glad FLEX has one as well!!

Robert 6600M

Robert Lonn

Bill -VA3WTB

It has everything to do with it, the receiver in an SDR radio is much much different then a non SDR radio.  So as I said,,if you understand that an SDR radio uses ADCs and SCUs you would know what they are and what they work.

Bill -VA3WTB

Robert, I remember Gerald saying that the $200.00 does not even cover the cost of development. 

Robert Lonn

Your Correct,, So Flex charges a Modest Amount, they probably could charge $1000, but most people will probably Run Away, so $200 seems like a sweet Spot...

David Pearson

Wish I read this before I purchase my Flex-6400. Feeling dumb for not noticing this. About to put the Flex-5000 back into operations. So, the Flex-6400 is like Flex-5000 without a second receiver.

John KB4DU

If the purchase is within 30 days, flex will take it back and refund.

David Pearson

Past the 30 days already, life got busy, so I miss the window. I will have to sell it then upgrade next year.