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SmartSDR v3.9.19 and the SmartSDR v3.9.19 Release Notes
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The latest 4O3A Genius Product Software and Firmware
SmartSDR v3.9.19 and the SmartSDR v3.9.19 Release Notes
SmartSDR v2.12.1 and the SmartSDR v2.12.1 Release Notes
The latest 4O3A Genius Product Software and Firmware
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Cheap and cheerful preamp solution
Michael - N5TGL
Member ✭✭
I've always had a bit of trouble being able to get close to 0 when setting mic gain. Even with the +20dB and gain set at 100, I still was hovering around -10. I've been looking for a preamp, went so far as to find one to build, but found a simple, inexpensive one on eBay. Enter the Art MicroMix. Very simple, will do balanced/unbalanced and has phantom power. Runs on 12vdc. Front panel controls consist of a gain knob and a switch for phantom power.
Sounds just fine, had to do a bit of choking to remove RF feedback, which was kind of surprising considering it's an all metal case and I'm using balanced mic cables. Paid $40 used for it, and it does the trick. Something to look into if you're in the market for a preamp. They are out of production, but there seems to be quite a few of them online.

Yeah, I've got a bit of ferrite on there. Such is life with a longwire and QRO.
Sounds just fine, had to do a bit of choking to remove RF feedback, which was kind of surprising considering it's an all metal case and I'm using balanced mic cables. Paid $40 used for it, and it does the trick. Something to look into if you're in the market for a preamp. They are out of production, but there seems to be quite a few of them online.

Yeah, I've got a bit of ferrite on there. Such is life with a longwire and QRO.

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