[Elecraft] Meter readings jumping around

[David C Dawson]

Thanks Don,
I've got the filters peaked now.

On Sun, Dec 17, 2006 at 09:33:03PM -0500, Don Wilhelm wrote:
> David,
> 
> If the indication is only changing by 1 or 2 units on the last digit, that
> is normal and is caused by the resolution available.
That was about it.
> 
> When peaking the filters, yes the output will increase.  If it climbs very
> high, just exit TUNE and start enter it again to bring the power down.  Keep
> the power low by exiting and re-entering TUNE) when peaking the filters -
> you can see the peak more easily if you observe that rule.
> 
> Some degree of uncertainly in the S-meter indication is normal - if it
> changes by only one bar, that is likely due to the resolution problem - the
> real indication likely should be somewhere between the 2 bars, but that does
> not exist, so it hits the lower one sometimes and the higher one other
> times.  Such is the problem with many digital metering systems unless they
> design for low order digit blanking.

The S-meter was rapidly switching between the last 2 bars, so they
seemed both lit at the same time.
Was this what you are talking about?

As far as I can see, this doesn't happen in normal use.

> 
> OTOH, if the display is just showing random indications, then yes - look for
> that elusive bad solder connection.
No, it was not like that.
> 
> 73,
> Don W3FPR
> 
A few other things:

-The speaker audio seems a tad low, not very low but not as loud as my 
Icom 730 is.

-The speaker terminals were not at all like the manual, so I have only
hooked up the one connection; but I expect I can figure that out
eventually with no problem.

-the S meter is  about S5 with no signal, can I just go through the 
previous set up for it as earlier in the manual? Any 'gotchas'?

> > -----Original Message-----
> > Hi,
> > I have got to the stage where the physical construction of the RF board
> > on the K2 is complete and it is assembled except for the filter peaking.
> >
> > I have noticed that the internal meter is jumping around somewhat at
> > times, although the analog meter I have in line with the dummy load does
> > not.
> >
> > I noticed that when I applied power on 20 meters, and started tweaking
> > L8 and L9 the power went up and up to 8 watts, then when I did it again,
> > it was stable at around 2.0. Is that abnormal?
> >
> > The S meter seems to jump around somewhat; that is, it jumps between two
> > adjacent bars (dot mode) on occasion.
> >
> > I think that there may be a poor solder joint somewhere (historical
> > precedent ;-)).
> >
> >
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-- 
David Dawson

The trouble with this country is that there are too many politicians
who believe, with a conviction based on experience, that you can fool
all of the people all of the time.
                -- Franklin Adams