HFU HF Underground
Technical Topics => Equipment => Topic started by: audiokaos on August 20, 2014, 1528 UTC
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So, what sort of audio processing best for SSB broadcasting? I'm guessing 6Khz bandwidth (Or 10?) ALC & Compression?
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In my experience with SSB there are many different factors involved; transmitter, microphone, power and audio source. I've never been able to turn on a transmitter and have it operate optimally without fine-tuning. Mic gain, compression, processing, ALC, etc. Your 930 should have a monitor function, put on the cans and see how it sounds, adjust it.
A good starting point would be the radio manual, then adjust accordingly.
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Hi audiokaos :).
What kind of SSB are we talk about, only for communication or ?
Ole :)..
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Well, just listening to folks like Wolverine Radio & I'm just amazed that they get the audio (music) sounding as good as they do out of SSB. I do audio work myself & just wondered what processing they used for SSB. I understand the AM/FM requirements very well, just that SSB seems that it would require much more work to get it sounding good.
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Wolverine pounds the hell out of his processing whatever he has. It kinda sounds like a 70's multiband innovonics box, but I could be wrong. Generally he runs about 4-5 KHz audio bandwidth, and that is the primary reason his signal sounds so good for SSB. I would prefer about 6KHz or so, but its difficult to find filters that wide for transmit applications. If I was going to do sideband again, I'd probably build a phasing type exciter, that way your audio bandwidth would be determined soly by the lowpass filter in the audio processing chain, not the crystal filter in the modulator.
+-RH