[Premium-Rx] Comparing Premium RXs to Amateur Transceivers

[Jerry K]

The most interesting thing to me about Sherwood's website is noting the
position of the R-390A in the performance rankings. It's amazing that a 45
year old tube radio can still slug it out performance wise with Orions,
IC-7800's, and FT-1000's. The only rigs outperforming it in most cases are
$4,000-$12,000 in price, and you can still buy a clean working R-390A for
$500 or less. Not only that, you can fix whatever might go wrong with it
yourself. Try digging into an IC-7800 with a soldering iron. My respect for
the guys who designed and built the 390 series grows year by year.
Jerry W5KP

-----Original Message-----
From: premium-rx-bounces at ml.skirrow.org
[mailto:premium-rx-bounces at ml.skirrow.org]On Behalf Of Gary Geissinger
Sent: Thursday, October 21, 2004 4:17 PM
To: premium-rx at ml.skirrow.org
Subject: RE: [Premium-Rx] Comparing Premium RXs to Amateur Transceivers


You may want to head over to Rob Sherwood's website:

http://www.sherweng.com/

He has compared many receivers and transceivers.

73's,

Gary WA0SPM



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-----Original Message-----
From: premium-rx-bounces at ml.skirrow.org
[mailto:premium-rx-bounces at ml.skirrow.org] On Behalf Of Brian D. Comer
Sent: Thursday, October 21, 2004 3:33 PM
To: premium-rx at ml.skirrow.org
Subject: RE: [Premium-Rx] Comparing Premium RXs to Amateur Transceivers





I have not had time to do a full performance comparison but here are
some points I can give. For the Ten-Tec Orion verses the Racal 6830.

The Racal has a higher third order IP for tone spacings in excess of 20
KHz 30dBm compared to 25 dBm. For close in spacings the Orion is much
better by as much as 40 dB.

The Phase noise of the Racal is appalling compared to the Orion.

>From an operational point of view the 6830 overloads due to close in
signals so much that it is unusable in contests from this location.
The Orion has shown no problems with its dynamic range here or when used
in field day operations. I still find the tuning on the older analog
radios better than the modern shaft encoded units (due to the shaft
encoder resolution). For performance the Orion is the best radio I have,
but at this time the RA 117 is the most satisfying to tune around the
bands. At this location there are no signals that show any differences
between radios with IMD's above +20 dBm and much lower on radios with
good pre-selectors.

I would like to give a much better answer to this and I am hoping to
document my tests on both the RA 6830 and some of the older vacuum tube
ham radio / wwii receivers I have but time is a problem at the moment.

73 Brian KF6C G3ZVC


-----Original Message-----
From: premium-rx-bounces at ml.skirrow.org
[mailto:premium-rx-bounces at ml.skirrow.org] On Behalf Of Ahmet Gundes
Sent: Thursday, October 21, 2004 12:57 PM
To: Premium-RX
Subject: [Premium-Rx] Comparing Premium RXs to Amateur Transceivers


Hello everybody,

I am wondering if anyone ever had a chance to compare the Premium RX
standalone receivers with the Receivers of modern Amateur
Transceivers such as Icom IC756PROII, IC756PROIII, IC-7800, Yaesu
FT-1000MP-V, FT-847, Kenwood TS-870S, Ten-Tec Orion,.... etc.

Amateur TX receivers seem to be packed with high performance and
cleverly designed RF Front Ends coupled with the power of 32bit
DSPs ( in some multiple DSP s ! ) and even dual independent receivers
having +40dBm IP3 performance !...

And how about the performance of Wide Band receivers such as
AOR AR5000A+3, and ICOM R8500 in HF bands.

It would be great to know if anyone ever did some performance
comparisons.

73...
Ahmet

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