[K1-2277} Front Panel construction -- R1 (10-turn potentiometer) numbering confusion

[Richard-3]

Hello all.  I'm seeing a difference between the numbering diagram and the
numbering on my potentiometer.  I'm thinking I should follow the numbers.
The sequence on the potentiometer shows 1 and 3 on the outsides, and 2 in
the middle and pointing to the center of a resistor symbol.  The manual
illustration shows 3 and 2 on the outside and 1 in the middle.  Both show 3
next to the knob shaft.  The manual also notes that "Your potentiometer MAY
be either of the two types shown."  (Emphasis added).  I have three in-line
lugs.

>From the front panel schematic in Appendix B, I think I just need to match
the diagram on the pot with the schematic, but it is not clear which, 1 or
3, is the ground on the pot.  The schematic on the pot indicates that CW
moves towards 3.

Thinking that this is simply a variable resistor, I'm thinking that getting
the "variable" right is the key.  Trying to learn as I go.

Thanks for any help.

NU6T
Rich



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[Don Wilhelm-3]

Rich,

There are two types of 10 turn pots used - and therefore there is some
possible confusion if you follow the pot numbering on the schematic.
Use the illustration in the manual that matches your potentiometer.

If your VFO tunes in a direction opposite what it should, then you have
something reversed with the pot wiring - no other harm will come of it.

73,
Don W3FPR

Richard Hill wrote:

> Hello all.  I'm seeing a difference between the numbering diagram and the
> numbering on my potentiometer.  I'm thinking I should follow the numbers.
> The sequence on the potentiometer shows 1 and 3 on the outsides, and 2 in
> the middle and pointing to the center of a resistor symbol.  The manual
> illustration shows 3 and 2 on the outside and 1 in the middle.  Both show 3
> next to the knob shaft.  The manual also notes that "Your potentiometer MAY
> be either of the two types shown."  (Emphasis added).  I have three in-line
> lugs.
>
>>From the front panel schematic in Appendix B, I think I just need to match
> the diagram on the pot with the schematic, but it is not clear which, 1 or
> 3, is the ground on the pot.  The schematic on the pot indicates that CW
> moves towards 3.
>
> Thinking that this is simply a variable resistor, I'm thinking that getting
> the "variable" right is the key.  Trying to learn as I go.
>
> Thanks for any help.
>
> NU6T
> Rich

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[Scott Richardson-4]

> If your VFO tunes in a direction opposite what it should, then you have
> something reversed with the pot wiring - no other harm will come of it.

Also, a certain miswiring of the K1 tuning pot will leave you with virtually
*no* tuning range. Yep, I've done it.

Scott N1AIA

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