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546caudio [2007/05/21 00:42] |
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| + | ====== Omni Series C Audio Mod ====== | ||
| + | **From the Ten-Tec Reflector September 19, 1999** | ||
| + | Here is a simple mod for improved audio on the Omni C. I have not tested it on other Omni series such as A, B, D etc. but most likely it would have the same effect. It gives a boost to voice frequencies and a slight peak around 600-700hz for cw. All signals seem to be much easier to copy with the now brilliant sounding audio. | ||
| + | |||
| + | Parts needed.........1ea. 1 meg resistor | ||
| + | |||
| + | - Remove bottom cover of rig. | ||
| + | - Locate the audio-sidetone board. This is the one with the sidetone pots. There is no need to remove the board. | ||
| + | - Solder the resistor between pin 2 of IC-1 (LM-380) and AF-Output. Instead of soldering directly to pin 2 of IC-1, you may want to solder to R8's (10K) lead which connects to pin 2 and the other end to C11's negative lead. | ||
| + | - I suggest sliding some insulation over the 1 meg resistor's leads to prevent shorting. | ||
| + | - Replace the bottom cover and enjoy. | ||
| + | |||
| + | 73 | ||
| + | Steve N4LQ | ||
