Hi John,

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Bought mine new from MFJ with Ver 3.0 FW. I am a strictly CW operator, with a few listens on SSB. For CW, I have found that by optimizing the filter/audio features, I get awesome reception with noisy or QRM condx, as follows:

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• DSP-FLT, leave ON and carefully set the H_CUT and L_CUT freqs for your ear. This makes a huge difference. I use L_CUT 300 and H_CUT 1000
• NR, leave ON as it removes most local QRN/ignition type noise.
• NOTCH, leave ON and carefully set the CNT and BW settings for your ear. I use CNT 700 and BW 100.
• EQ, leave ON and carefully adjust the BASS, MEDI, and TREB. I use BASS 0, MEDI +6, TREB +3.
• I also use a homebrew speaker/amp with tuned-stereo ports (PVC pipe extensions over speakers), as pictured. Ports are optimized for audio BW 300 – 2000Hz. With the volume just cracked open I can fill the room with an 600 – 900Hz CW tone and NO QRM/QRN. Not sure how well this works in SSB.

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My technique is to leave everything off and monitor until I engage a QSO and than enable everything, including using RIT, until I get a comfortable listen. I hope this helps.

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Best 73, Lou N2JPR

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Sent from for Windows

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I just got a X5105 and have heard comments about audio being tedious listening with headphones. I have not tried a good external speaker but have tried two pair of headphones and am very disappointed in audio for ssb. Cw seems ok. Playing with AGC helps some but still seems terrible. Even the cheap ubitx blows it away for audio that is more understandable. I guess it is what it is. This one needs a fw upgrade when I get a cable. Maybe that will help some. Intelligibility is rough in noisy conditions. Anyone have similar issues?
73s John N4HNO?