I contested with both an ANAN-100D and Flex 6500 over the past few years
and observed no issues with ADC overload. My issues with those radios is
one of ergonomics. I believe their receivers are superb, as is.
73, Barry N1EU
On Mon, Aug 15, 2016 at 12:11 PM, Jim Brown <k9yc@audiosystemsgroup.com>
wrote:
> Barry,
>
> I don't disagree that all mfrs are looking at direct sampling RX, and I
> agree that they should be. I'd call that wise investment in R&D. My
> assessment of the 7300 is that it's a budget level product that was
> oversold.
>
> The fundamental issue right now with that technology is dynamic range with
> the available chips, which are in the right price range because of the
> volume built for them by cell phones. Guys are making Flex 6700s work in
> contest superstations because the serious bandpass filtering they would
> need with any radio acts as an RX preselector, limiting the bandwidth of
> the spectrum that can overload the A/D. But that won't help in EU or AS,
> where broadcasters are in the passband of any practical filter on 40M, and
> there are some high power broadcasters close enough to 20M to make it a
> problem there too.
>
> I think you've been happy with your ANAN in that regard. Are you doing
> anything special to address the dynamic range issue?
>
> 73, Jim K9YC
>
> On Mon,8/15/2016 5:22 AM, Barry N1EU wrote:
>
>> I think dealers and manufacturers have stock piles of ALL superhets, not
>> just the 7600. I think Rick is on the mark that the DEALER is simply
>> motivated to move excess 7600 inventory.
>>
>> What Rick didn't mention is that there's a fresh rumor making the rounds
>> that Icom is about to announce a direct sampling SDR replacement for the
>> 7600. That's extra motivation to move 7600 inventory.
>>
>> The 7300 has changed the game, period. Icom is sitting pretty.
>>
>
>
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