2 kHz third order dynamic range on TS-590S
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| Mar 19th 2021, 18:00 | |
KR2FTotal Topics: 0 Total Posts: 0 |
Hello. I am in the final stages of making a decision between an Icom IC-7300 and a Kenwood TS-590SG. I was initially leaning toward the Icom, partially because I have never owned an Icom and also it is an SDR and has the spectral display. I have looked at various comparisons and the only thing making me hesitate is the 2kHz 3rd order dynamic range spec. There is a considerable difference between the two, leaning in favor of the Kenwood, but I cannot say for certain how much of a difference it will make. The Icom's is 95 dB and the Kenwood's is 106 dB. They are both very good radios for their price class, plus I know the Icom seems to have more bang for the buck, and I was looking forward to playing with the SDR and spectral display also. IOW, I am really not sure what I want to do. What does the hive mind think about this spec? By the way, I currently have a Kenwood TS-570S, so the TS-590 would be a bit easier for me to familiarize myself with, but that's not necessarily a big deal for me. Thank you. Vin KR2F |
| Mar 22nd 2021, 10:50 | |
WB1GCMSuper Moderator Total Topics: 0 Total Posts: 0 |
The ARRL Test Engineer says that unless you have a high gain antenna, atop of a tower, you may not have enough signal voltage at the antenna jack to warrant a 3 IMD DR of over 100 dB (I've seen contest & DX stations that need 100+ dB). If you have a G5RV, a vertical, or a 3L beam, you will never experience IMD, unless you have two very strong local stations on at the same time, spaced evenly apart in frequency (2&4 kHz away, in this example). Granted, signals can be very strong on the lower bands (160 & 80 meters), but the IMD products, if any, are usually far below the local noise floor (not receiver noise floor). |
| Mar 22nd 2021, 11:15 | |
KR2FTotal Topics: 0 Total Posts: 0 |
This is precisely the sort of information I was looking for. Thank you very much. |
| Mar 23rd 2021, 08:26 | |
WB1GCMSuper Moderator Total Topics: 0 Total Posts: 0 |
You are very welcome! Bob Allison WB1GCM ARRL Test Engineer |
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