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516tcxo [2007/04/09 22:19] n5na |
516tcxo [2007/05/21 00:42] (current) |
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-The TCXO module is immediately recognizable as a rectangular silver metal can on the top circuit board. It is located near the center of the circuit board...just a bit to the right. The TCXO is designated as U9. | -The TCXO module is immediately recognizable as a rectangular silver metal can on the top circuit board. It is located near the center of the circuit board...just a bit to the right. The TCXO is designated as U9. | ||
-You'll see a small straight-blade screw-adjustable capacitor visible through the TCXO's metal case. | -You'll see a small straight-blade screw-adjustable capacitor visible through the TCXO's metal case. | ||
- | -Adjust the TCXO's capacitor in small increments with a jeweler's screwdriver until you have attained "zero-beat" against the sidetone oscillator. * Note: the capacitor's stator appears to be at ground potential and there's no need for an insulated screwdriver. As the screwdriver is removed, zero-beat should not change. * | + | -Adjust the TCXO's capacitor in small increments with a jeweler's screwdriver until you have attained "zero-beat" against the sidetone oscillator. __Note: the capacitor's stator appears to be at ground potential and there's no need for an insulated screwdriver. As the screwdriver is removed, zero-beat should not change.__ |
-Replace the top cover using its 5 screws that were removed in Step 1. | -Replace the top cover using its 5 screws that were removed in Step 1. | ||
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-Paul, W9AC | -Paul, W9AC | ||
+ | ---- | ||
+ | **March 7, 2003** | ||
+ | |||
+ | Although it should be obvious, the TCXO alignment procedure I previously sent is only relevant to the Argo Model 516TCXO. Do not | ||
+ | attempt this procedure with the Model 516 as there is no TCXO to align. | ||
+ | |||
+ | -Paul, W9AC |