RX EQ SSB Guidance

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  • Updated 5 months ago
Looking for some guidance on using RX EQ on SSB. I've noticed when using RX EQ, cutting 1K helps reduce noise but the gain of the signal is reduce significantly also. I'm assuming this is the nature of applying EQ, a double edge sword. Is there a way to change the audio contour without affecting gain?
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A.J. AJ2I

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Posted 5 months ago

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WW1SS - Steve

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I don't believe the gain of the signal is reduced just the volume of the audio. May need to turn up volume as you reduce DB on the receive eq.
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Neal Pollack, N6YFM

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Take the audio output of your Flex and connect it to the LINE INPUT of this;
http://www.westmountainradio.com/product_info.php?products_id=clr_dsp

Reduces static/hash/noise but keep the voice level the same.

Neal   N6YFM
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Steve Sampson

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Audio gain and equalization are two parts of the same thing.  Equalization reduces or boosts gain of specific frequencies.  Volume reduces or boosts gain of all frequencies.  You must balance both to your liking.
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Steve Sampson

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Audio gain and equalization are two parts of the same thing.  Equalization reduces or boosts gain of specific frequencies.  Volume reduces or boosts gain of all frequencies.  You must balance both to your liking.
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Bill -VA3WTB

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You have a few things to use, the RX EQ helps to hear hard to hear stations. But the most powerful tool you have is setting the AGC-T to reduce the band noise. Play with it carefully.

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WA2SQQ

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The results of EQ’ing receive audio is proportional to how good your speakers / audio system is. I use a Lepai LP-2020TI Digital Class D amplifier driving a set of old Technics 3-way book shelf speakers with a small separate sub-woofer. Especially on AM, this gives you the resources to hear all there is to hear. A very inexpensive way to get decent audio.

https://www.parts-express.com/lepai-lp-2020ti-digital-hi-fi-audio-mini-class-d-stereo-amplifier-with-power-supply--310-3000?utm_source=google&utm_medium=cpc&utm_campaign=pla&gclid=Cj0KCQiAheXiBRD-ARIsAODSpWO_JWaDd7u98xRKJQ-vAi5E9p3yjul71hkWpkY6mZOPJt5FQQA6Y-UaAr0EEALw_wcB

 






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John KB4DU

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A.J.

1 khz audio frequency is in the middle of the human voice range, so if you cut that freq to reduce noise, you will also cut the voice level, Typical frequency range for voice communication is approx 300 hz to 3000 hz, the range passed by a wired phone. Frequencies below this use noticeable amount of power without enhancing intelligibility, frequencies above this occupy bandwidth that doesn't enhance intelligibility. Other controls on the flex will be more useful addressing noise. I'm kinda deaf, so I cut the lows and highs to increase the voice frequencies in proportion to the others.