L'UTIMA VERA DISINTERESSATA CLASSIFICA?

Receiver
Subject of measurement, band: 14 MHz20 kHz reciprocal mixing dynamic range2 kHz reciprocal mixing dynamic range20 kHz blocking gain compression2 kHz blocking gain compression20 kHz 3rd-order dynamic range2 kHz 3rd-order dynamic range20 kHz 3rd-order intercept2 kHz 3rd-order interceptTransmit 3rd-order IMDTransmit 9th-order IMDRx-Tx turnaround time (SSB tx delay)Price in USD (2012/2013)Company's site
Min/max of scale-60/-140 dBc-60/-140 dBc70/140 dB70/140 dB50/110 dB50/110 dB-40/+35 dBm-40/+35 dBm-20/-35 dB-20/-70 dB50/10 ms
Transceivers/receivers sorted by 2 kHz 3rd-order dynamic range. Please take into account that there might be a difference in the numbers when comparing the older product reviews (before February 2007) compared to the later product reviews, due to changes in the testing methodology, measurements filters, etcetera.
1Yaesu FTdx5000D, December 2010N/MN/M136 dB *136 dB *114 dB **114 dB **+41 dBm **+40 dBm **-43 dB #**-72 dB #**37 ms $5,399 www.yaesu.com
2WiNRADIO WR-G31DDC, January 2012N/MN/M128 dB128 dB107 dB107 dB+32 dBm+32dBmN/AN/AN/A $899 www.winradio.com
3Elecraft K3, January 2009N/MN/M142 dB **140 dB106 dB103 dB+29 dBm+28 dBm-29 dB-51 dB12 ms $2,200 www.elecraft.com
4Elecraft K3, April 2008N/MN/M139 dB139 dB103 dB102 dB+26 dBm+26 dBm-27 dB-53 dB22 ms $2,200 www.elecraft.com
5Kenwood TS-990S, February 2014-117 dBc-87 dBc138 dB133 dB112 dB **101 dB+44 dBm **+35 dBm-31 dB-57 dB18 ms $8,000 www.kenwood.com
6Yaesu FTdx3000, April 2013-106 dBc-82 dBc137 dB *127 dB110 dB100 dB+40 dBm **+23 dBm-27 dB-52 dB34 ms $2,699 www.yaesu.com
NEW7SSB Electronic ZEUS ZS-1-128 dBc-120 dBc129 dB129 dB105 dB100 dB+31 dBm+31 dB-34 dB-60 dB68 ms $1,700 www.ssb.de
8Elecraft KX3, December 2012-120 dBc-114 dBc130 dB128 dB103 dB100 dB+34 dBm+34 dBm-30 dB-55 dB30 ms $999 www.elecraft.com
9FlexRadio FLEX-5000A, July 2008N/MN/M123 dB123 dB99 dB99 dB+35 dBm+30 dBm-34 dB-54 dB29 ms $2,799 www.flexradio.com
10TenTec 599AT Eagle, August 2011N/MN/M136 dB121 dB98 dB98 dB+22 dBm+22 dBm-28 dB-48 dB16 ms $1,795 www.tentec.com
11Kenwood TS-590S, May 2011N/MN/M141 dB **126 dB106 dB97 dB+26 dBm+22 dBm-29 dB-52 dB14 ms $1,649 www.kenwood.com
12Perseus SDR, December 2008N/MN/M129 dB129 dB100 dB97 dB+35 dBm+35 dBmN/AN/AN/A $999 www.microtelecom.it
13TEN-TEC 539 Argonaut VI, August 2013N/MN/MN/MN/M96 dB96 dB+20 dBm+20 dBm-30 dB-51 dB20 ms $995 www.tentec.com
14Icom IC-7700, October 2008N/MN/M125 dB102 dB106 dB95 dB+35 dBm+24 dBm-28 dB-53 dB15 ms $7,179 www.icomamerica.com
15TenTec Orion-II, September 2006N/MN/M136 dB136 dB92 dB95 dB+20 dBm+21 dBm-28 dB-52 dB30 ms $4,295 www.tentec.com
16Flex-3000, Oct/Nov 2009N/MN/M113 dB113 dB99 dB95 dB+28 dBm+26 dBm-30 dB-45 dB48 ms $1,699 www.flexradio.com
17Icom IC-7410, October 2011N/MN/M143 dB **111 dB106 dB88 dB+29 dBm+5 dBm-30 dB-61 dB45 ms $1,949 www.icomamerica.com
18Icom IC-7600, November 2009N/MN/M122 dB102 dB106 dB88 dB+31 dBm+13 dBm-31 dB-48 dB13 ms $4,976 www.icomamerica.com
19Icom IC-9100, April 2012-101 dBc-77 dBc142 dB **111 dB108 dB87 dB+29 dBm+2 dBm-29 dB-64 dB61 ms $3,650 www.icomamerica.com
20Icom IC-7800 V2, March 2007N/MN/M144 dB **117 dB108 dB86 dB+38 dBm **+22 dBm-32 dB-52 dB15 ms $12,499 www.icomamerica.com
21FlexRadio FLEX-1500, December 2011N/MN/M107 dB107 dB100 dB86 dB+31 dBm+13 dBm-22 dB-48 dB200 ms $649 www.flexradio.com
22Yaesu FTdx9000MP, July 2010N/MN/M137 dB102 dB99 dB85 dB+28 dBm+7 dBm-37 dB #**>-75 dB #**32 ms $11,629 www.yaesu.com
23TenTec R4020 QRP, February 2011N/MN/MN/MN/M84 dB84 dB-10 dB-10 dBmN/MN/MN/M $249 www.tentec.com
24Yaesu FTdx1200, January 2014-104 dBc-81 dBc132 dB123 dB101 dB83 dB+31 dBm+4 dBm-32 dB-50 dB38 ms $1,600 www.yaesu.com
25TenTec Omni-VII, July 2007N/MN/M137 dB134 dB91 dB82 dB+11 dBm+6,5 dBm-27 dB-55 dB20 ms $2,695 www.tentec.com
26Icom IC-R9500, January 2008N/MN/M144 dB **109 dB5kHz/92 dB81 dB+32 dBm-4dBmN/AN/AN/A $17,000 www.icomamerica.com
27Yaesu FTdx9000C, March 2006N/MN/M128 dB97 dB101 dB78 dB+35 dBm+1 dBm-34 dB #-80 dB #**35 ms $5,779 www.yaesu.com
28Yaesu FT-450D, November 2011N/MN/M134 dB88 dB97 dB76 dB+16 dBm-21 dBm-25 dB-50 dB17 ms $999 www.yaesu.com
29Yaesu FT-950, March 2008N/MN/M128 dB98 dB95 dB71 dB+21 dBm-4 dBm-35 dB-56 dB25 ms $1,449 www.yaesu.com
30Alinco DX-SR8T, June 2011N/MN/M100 dB83 dB94 dB70 dB+1 dB-30 dBm-28dB-53 dB50 ms $519 www.alinco.com
31Yaesu FT-2000D, October 2007N/MN/M136 dB87 dB98 dB69 dB+26 dBm-16 dBm-41 dB #**-65 dB #37 ms $3,549 www.yaesu.com
32Icom IC-7200, June 2009N/MN/M140 dB83 dB99 dB67 dB+23 dBm-11 dBm-32 dB-58 dB30 ms $1,396 www.icomamerica.com
33Yaesu FT-450, December 2007N/MN/M134 dB90 dB97 dB67 dB+13 dBm-31 dBm-30 dB-48 dB40 ms N/A www.yaesu.com
34Yaesu FT-2000, February 2007N/MN/M126 dB92 dB95 dB64 dB+16 dBm-22 dBm-32 dB-60 dB27 ms $2,819 www.yaesu.com
35Icom IC-7000, May 2006N/MN/M112 dB86 dB89 dB63 dB+6 dBm-27 dBm-33 dB-58 dB12 ms $1,299 www.icomamerica.com
Transceivers/receivers sorted by 2 kHz 3rd-order dynamic range. Please take into account that there might be a difference in the numbers when comparing the older product reviews (before February 2007) compared to the later product reviews, due to changes in the testing methodology, measurements filters, etcetera.
Subject of measurement, band: 14 MHz20 kHz reciprocal mixing dynamic range2 kHz reciprocal mixing dynamic range20 kHz blocking gain compression2 kHz blocking gain compression20 kHz 3rd-order dynamic range2 kHz 3rd-order dynamic range20 kHz 3rd-order intercept2 kHz 3rd-order interceptTransmit 3rd-order IMDTransmit 9th-order IMDRx-Tx turnaround time (SSB tx delay)Listprice in USD (2011/2012)Company's site
Min/max of scale60/140 dB60/140 dB70/140 dB70 - 141 dB50/110 dB50/110 dB-40/+35 dB-40/+35 dB-20/-35 dB-20/-70 dB50/10 ms
Receiver
* = Blocking exceeded the levels indicated
** = Below/above measurable levels
# = Class A operation
$ = Listprice in US according to Elecraft, FlexRadio, TenTec and Universal Radio
N/M = Not measured
Please take into account that there might be a difference in the numbers when comparing the older product reviews (before February 2007) compared to the later product reviews, due to
changes in the testing methodology, measurements filters, etcetera.
Green = excellent
Light green = good
Yellow = average
Orange = moderate
Red = poor
Blocking gain compression
When a very strong off channel signal appears at the input to a receiver it is often found that the sensitivity is reduced. The effect arises because the
front end amplifiers run into compression as a result of the off channel signal. This often arises when a receiver and transmitter are run from the same site and the transmitter signal is
exceedingly strong. When this occurs it has the effect of suppressing all the other signals trying to pass through the amplifier, giving the effect of a reduction in gain.
Blocking is generally specified as the level of the unwanted signal at a given offset (normally 20 kHz) which will give a 3 dB reduction in gain. A good receiver may be able to withstand signals
of about ten milliwatts before this happens.
The blocking specification is now more important than it was many years ago. With the increase in radio communications systems in use, it is quite likely that a radio transmitter will be 
operating in the close vicinity to a receiver. If the radio receiver is blocked by the neighbouring transmitter then it can seriously degrade the performance of the overall radio communications 
system.
Reciprocal mixing dynamic range
ARRL Lab reports three dynamic range measurements that determine a transceiver’s overall performance.
Along with blocking gain compression dynamic range and two tone third order dynamic range, we must consider RMDR while evaluating how well a receiver hears.
Which of these measurements is the most important factor in comparing receivers depends a lot on how you plan to use that receiver. For hearing weak signals at or near the receiver’s noise floor,
receiver noise typically is the limiting factor. For the reception of stronger signals under crowded band conditions, two tone third order DR is the most important number.
To assess a receiver’s ability to perform well in the presence of a single, strong off-channel signal (common within geographical ham radio “clusters” or with another ham on the same block),
blocking gain compression DR is usually the dominant factor.
Reciprocal mixing is noise generated in a superheterodyne receiver when noise from the local oscillator (LO) mixes with strong, adjacent signals . All LOs generate some noise on each sideband,
and some LOs produce more noise than others. This sideband noise mixes with the strong, adjacent off-channel signal, and this generates noise at the output of the mixer.
This noise can degrade a receiver’s sensitivity and is most notable when a strong signal is just outside the IF passband. RMDR at 2 kHz spacing is almost
always the worst of the dynamic range measurements at 2 kHz spacing that we report in the “Product Review” data table.
3rd order dynamic range
The difference in decibels between the weakest signal the receiver can handle and the strongest signal the same receiver can handle simultaneously,
- without the need of using additional controls of the receiver, manually carried out by the operator - within 20 kHz (wide spaced) and 2 kHz (close in) within the receiver's passband.
For more information on this important item, written by Rob Sherwood NC0B, please use this link: http://www.sherweng.com/documents/Barc2008.pdf
3rd order intercept
This more or less theoretical point, gives a good indication of a receiver's overall strong signal performance. Third order intercept is related to two-tone third order
IMD. When receiver's response on desired and undesired signals (within the passband) were plotted in the same graph, the two lines would intersect at a point called the third-order intercept.
Tx-Rx turnaround time
The delay between receive and transmit, important for digital modes. A transmit-to-receive delay of 35 ms or less in SSB indicates that the rig is suitable for digital operation.
Transmit 3rd and 9th order IMD
Transmit two-tone intermodulation distortion, or two-tone IMD, is a measure of spurious output close to the desired audio of a transmitter being
operated in SSB mode. This spurious output is often created in the audio stages of a transceiver, but any amplification stage can contribute**
If you have ever heard someone causing "splatter", the noisy audio that extends beyond a normal 3 kHz nominal SSB bandwidth, then you have heard the effects of transmit IMD.
Frequencies close to the transmit signal are affected the most, but depending on the amount of IMD, large portions of the band can suffer from one poor transmitter**
For more information (including what the numbers really mean) please read ARRL's QST Magazine August 2004 very interesting article on the pages 32-36.
v MAY.12.2014
Please send me an e-mail (to: hans at pa1hr dot nl) if you have corrections, remarks, etc.
Disclaimer:
The following applies to the page you are currently viewing. By the page, you agree to this disclaimer.
This overview is provided for your convenience by Hans PA1HR; it is a summary of measurement figures and gives no indication of the ergonomics,
the features and/or the operational characteristics of the transceivers/receivers.
The measurement figures in this overview are from the ARRL Laboratory and published in QST.
This page is just a non-official overview, where no one should draw any conclusions.
The overview on this page is written with the utmost care, yet, PA1HR assumes no liability for any inaccuracies in the displayed.
PA1HR is not responsible for the content in this overview, on this page and/or companies referenced.