WAS Useful Article - Now "Sour Grapes"

[Don Rasmussen]

>> Worth reading I think
http://www.eham.net/articles/18767

Read the second reply from ZENKI.

If this is not RFEXPERT from eHam reviews infamy, it's
his close cousin.

Can you say "agenda"? Sure ya can!

The official sour grapes talking points for anyone
with an axe to grind is likely to be "best Rx in the
world - so what with that Tx". Not real clever, but
predictable.

But wait - here's a transceiver that -TRULY- has it
all!!!

http://www.adat.ch/index_e.html 

err - or "Will have it all starting Q1 2008!"

Err, I guess Q1 2008 was a while ago - at least they
have the front panel and PA board produced.

So hey - ignore that K3 - keep your eye on the Super
Berner! ;-)

RFEXPERT : http://www.eham.net/reviews/detail/6673

Sunspot Cycle 24 and IMD  Reply  
by ZENKI on March 2, 2008  Mail this to a friend!  
What good is owning the worlds best transceiver with
high IMD blocking dynamic range when the current batch
of modern radios have transmitters whose IMD
performance is deteriorating as fast as their
receivers are getting better?

The K3 is a case in point, the worlds best receiver
yet according to the ARRL it has transmitter IMD
performance problems. Is this how you deal with an
overcrowded band, your QRM your neighbors off the air
and then brag you have the best receiver?

If the current trend continues with radios that have
IMD specs that are averaging close to -20dbc you might
as well use a crystal set and not shelve out your hard
earned cash out on a great receiver!

While the current standards for transmitter
performance continues to deterioate we are fast moving
towards the ham bands sounding like the CB band.
Imagine what it will sound like with 20 meters packed
full of stations at the peak of the sunspot cycle with
all the bad IMD radios that most of us currently use.
There is not one top range radio from any manufacturer
that would even meet NTIA/ETSI/ITU/FCC standards for a
100 watt transmitter thats used on HF commercial
radio.

Its time for the ham radio service to adopt occupied
bandwidth laws much like the marine and NTIA HF
services. We would then have set of standards that
would define exactly how well the transmitters should
perform, that everyone could understand. Likewise its
time for the ARRL to update its testing procedures and
test transmitters under same testing standards and
regime that most commercial transmitters must pass for
FCC type acceptance and for HF commercial use. No it
does not mean ESSB would be banned, but it would mean
that your IMD will have to be suppressed within
certain limits as % of your nominal bandwidth to meet
the standard even if you are 12khz wide.

There are radios coming that have no IMD problems, and
that uses DSP to cancel IMD. You wont even have to use
Class A. Adaptive distortion canceling is common in
the commercial radio service

http://www.adat.ch/index_e.html 

A future ham transceiver!
 

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