Re: VFO fine-coarse tuning

Posted by N5GE on Jul 03, 2008; 6:20pm
URL: http://elecraft.85.s1.nabble.com/VFO-fine-coarse-tuning-tp365854p365859.html

On Thu, 3 Jul 2008 11:51:30 -0600, "Bill W5WVO" <[hidden email]> wrote:

>Let's say I'm tuning in FINE mode (to the 1 Hz digit) and the VFO says 50.135.056. If I then go to COARSE (to the 100 Hz digit), tune to a VFO indication of, say, 50.145.0, I intuitively expect that the actual VFO frequency will be 50.145.000 -- but it continues to carry the FINE 10s and 1s digits as an offset, so the actual frequency is 50.145.056, which is revealed by tapping the FINE button. This was probably an intentional design choice based on how other rigs work -- but it's not the way it seems like it should be, to me. Intuitively, it seems like if it says 50.145.0, it should be 50.145.000. Am I completely wrong-headed here? Comments?
>
>Bill W5WVO

[snip]

I too have noticed that, Bill and it has caused me some negligible trouble at
times.

I hadn't thought about it much, but now that I have, I think it may be the
intent of the designers to let us switch between Fine and Coarse to speed the
movement to another frequency, not to zero out to the proper decimal point.  In
fact I would find it disconcerting to hear the CW pitch (freq) of the VFO change
upon pushing that button.

I did notice that if you move the VFO after selecting Coarse the third or second
decimal point is dropped, depending on whether you tap or hold.  That seems like
the best compromise to me.

That's just my opinion, I could be wrong.

73,

Tom, N5GE - SWOT 3537 - Grid EM12jq

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