K3 Serial No. 3813 joins K3 Serial No. 2783 on my radio desk. The 3813 K3 shipped from Aptos (or thereabouts) this last Monday. It has the LPF mod and the new DSP board. Please understand that I have significant high and low frequency hearing loss due to lots of loud noises in a past life. I wear hearing aids which do a pretty good job of getting my hearing up where normal people hear. Not the acute hearing types, though. So, my observations on the audio of the two radios are totally subjective and not the least scientific.
All that said, I cannot tell any difference in performance and audio response between 3813 and 2783. But then, I am one of those who never heard the DSP artifacts in the first place. Both radios are running the latest production release. I live in the country, so the NB does not get much use. The NR, on the other hand, gets a pretty good workout. I got hooked on DSP noise reduction with an Orion some years ago. I can tell little, if any, difference between the two K3s. The 3813 radio may be just a little quieter with the NR setting of 'F 1-2'. Looking at both radios now, I notice that the volume control (main and sub) are set to pretty much the same place on both radios. I will say that Don's suggestion in a posting related to AGC parameter settings really made a whumping difference in my 2783 K3. He suggested an AGC slope of 2 and a threshold of 8. If you are having bumby AGC action and reduced volume, try those settings. Works great on both the K3s.
I have ordered the DSP board upgrade and the LPF mod. I did so just to keep the 2783 radio current. That new hardware may become important in the future.
I replaced an FT-2000D with all the PEP updates with the 3813 K3. The Quadra went, too. An Expert 1K-FA amp will be delivered Monday. With that amp and two K3's, I've got the best of DX'ing and contesting environments, less antennas, that a small pistol can have. I'm working on the antenna situation. A 40 Meter four square begins the improvements in that area. See you in the pileups.
73 and HNY
Jim, K4ZMV
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