New Receiver Test Data

[n4vgb]

Sherwood Engineering has added 3 models to their table of receiver test data at http://www.sherweng.com/table.html .

Elecraft K3, FlexRadio 5000 & Icom R-9500 are the latest additions.

[K6IC]

Hi Mack,

Thanks for posting this info ... have been waiting to see  how the K3 stacks up ... Interesting.

73  Vic  K6IC

[WA1GFZ]

That is exactly what I measure in the flex front end,  and it does not improve as you go further out.  And the softrock should give you the same results if set up properly.
Interesting how he didn't post the SDR1K numbers. He sent them to me so we could compare notes.

[WA1GFZ]

most suckers can't handle the truth.

[WA1GFZ]

Rob's test is the standard. ARRL and rice box land came up with a bogus test to mask synthesizer phase noise. Flex jumped on the method. The new thinking raises numbers to impress the gotta have the newest and bestus.
Every Radio I have ever tested on Rob's list comes out within a DB or so of his.

[w3jn]

Wow... looks like the K3 is the new gold standard.  The synth is even better than the R-4C and R-390A 

[WA1GFZ]

R.T.F.O. Mack

[W5AMI]

most suckers can't handle the truth.

Frank, what's really comical is that the slight difference is so small that few users would ever encounter an area that it made any difference at all. Anybody using one of the rcvrs in the top section of the list should be a happy camper for the most part. Rob would probably have been better off to post the results and stay silent, his very logical attempts to explain and sooth the ruffled feathers of some Flex 5000 owners just keep drawing more BS in response. I love the email saying that the whole rcvr test procedure is antiquated and is no longer relevant!? Sounded more like "if Flex 5000 doesn't win hands down then the tests are irrelevant" to me.

Some of the owners of the Icom R9500 might have their feelings hurt a little in this deal but for a VLF-3ghz rcvr I thought it did surprisingly well. Huge frequency coverage like that brings in a whole new set of problems for designers and I think Icom did real well on the R9500. Now I wonder if we could put the R9500 in a different case with an American name on it and snag some sweet DOD contracts!? Hey Siganl/One did it with the IC-781!

I quit the flex list quite some time ago due to the ridiculous way so many of the so called members would come out of the woodwork anytime someone would post something negative about the box or software.  It was like, if you don't have something good to say about this radio, then keep your mouth shut!

I still enjoy my SDR-1000, but only for 40 and below, as the rx sucks above that, and the bands (20 - 6 meters) are full of spurs.