majoco
Stirrer
Interesting comparison test of some very new and some rather older receivers. Maybe my old JRC NRD 515 is not such a slug after all!
Receiver Test Data
Receiver Test Data
Yes, it's strange that they took "Narrow Dynamic Range" as the parameter on which to sort. That's probably why the relatively deaf FTdx-5000 came top of the list!
I guess most people when looking at the specs of a radio would go for 'sensitivity' first but of course thats not everything, 'receiver noise' would come high on the list and 'blocking' in areas where there were high powered nearby transmitters - Europe on the 49m band at night is a jumble of strong signals.
I'll try to get the data into a spreadsheet so I can sort on any parameter - could be more useful.
I was just looking at the figure with preamps off. No slur intended!majoco, not sure why you used the term “relatively deaf” in association with the FTDX-5000?
RE: The Perseus
I would have to question those sensitivity numbers as my Perseus will easily match my Icom 7600.
I have noticed with the Perseus that I can "hear" (a weak signal but not see anything in the waterfall to tell me it's there.
The other thing to note on that site is that they (at least not that I've seen) don't re-test the newer radios on a regular basis. They do one measurement and that's it.
With all of the firmware updates for Icom, Elecraft and perhaps Yaesu, it's very possible that those measurements have changed somewhat. Granted, they won't likely change by a great deal -- but a remeasurement should be done (if anything) just to compare the numbers.
RE: The Perseus
I would have to question those sensitivity numbers as my Perseus will easily match my Icom 7600.
I have noticed with the Perseus that I can "hear" (a weak signal but not see anything in the waterfall to tell me it's there.
Sherwood does retest in some cases like the Elecraft K2 where the original did not seem to meet specs. In most cases Shwewood relies on radios sent in as Rob can't possibly buy one of everything out there to test.
prcguy
I am pretty sure they also retested the FT-2000 after it seems to have turned in such a dismal performance compared to the QST test. But agiant he results were not good, which confuses me because my own testing indicates it is quite a bit better than the Sherwood list would support.
T!
I've used a lot of radios on the list and would agree with the pecking order on the ones I'm familiar with.
The tests also answer why most people I know who traded in their Icom 706MKIIGs for a new IC-7000 want their 706s back due to the drop in receiver performance.
prcguy