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You will need to connect your freq counter to TP-1 and make sure that t doesn't lose 'lock' (stays on freq - no random drifting). If the voltage is too low, it will lose that freq 'lock' on the upper channels and the freq counter readings will be random/sporadic. This will happen on ch 40 if the VCO voltage is too low. If the freq is already 'locked' with the voltage you have on it on ch 40; then you are good to go.

You can turn it up to 4.2v on ch 40. But don't take it too high past that, if you go to 5v; you risk popping the diodes in the VCO board. Some of these Chinese VCO boards are weak and will pop before that voltage; so beware!. Just make sure you keep the voltage low as you can on ch 40 and still keep the freq locked. Should be good to go.

[QUOTE="Robb, post: 603771, member: 8446"] You will need to connect your freq counter to TP-1 and make sure that t doesn't lose 'lock' (stays on freq - [I]no[/I] random drifting). If the voltage is too low, it will lose that freq 'lock' on the upper channels and the freq counter readings will be random/sporadic. This will happen on ch 40 if the VCO voltage is too low. If the freq is already 'locked' with the voltage you have on it on ch 40; then you are good to go. You can turn it up to 4.2v on ch 40. But don't take it too high past that, if you go to 5v; you risk popping the diodes in the VCO board. Some of these Chinese VCO boards are weak and will pop before that voltage; so beware!. Just make sure you keep the voltage low as you can on ch 40 and still keep the freq locked. Should be good to go. [/QUOTE]

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