This may not be of much use to you but I have found on the K3 that the
AFX BIN setting very significantly reduces the perception of noise when
listening to the external speakers. (But not so much in the headphones).
The speakers are MFJ-281, 6" separation, about 30" from ears, dead ahead.
If you do a lot of speaker listening you might want to try the binaural
afx. I have found it to be much more comfortable on noisy bands. I am
assuming it will work similarly on my K4.
73,
Drew
AF2Z
On 07/02/22 10:34, Roy Morris, Jr. via Elecraft wrote:
I find my receiver is very noisy. I know this time of the year receiver noise
can be very high. I have to use all 21 db of reduction from the PRE/ATTN
button and around 30 db reduction on the MRF encoder to get the radio quiet
enough to hear hear signals adequately on the 75, 40 and 20 meter bands on my
G5RV antenna. I can significantly decrease the noise with the NR set to a high
level, but the signal is also degraded and reduced. The receiver auto
attenuation is ON in the menu. All AGC settings are set to factory default. I
am using the current R30 firmware, and all transmit and receive parameters
check out OK. I would like to know if it is normal to have to use the MRF/SRF
encoder to get the noise down on the receivers. All of the pics I have seen
show the MRF/SRF set to zero (default). My K4D is equipped with the KAT4, KPA4
and 2 KSP4 speakers. This is a wonderful radio, and I want to operate it
correctly. I get good reports on my signal. I have been told the CESSB
increases my audio by 8db and the bandpass skirts are sharp and clean.Thanks
for your thoughts on how I am operating this great radio. Roy Morris W4WFB
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