[Elecraft] K3 dbV in 2.38

[Joe Subich, W4TV]

> Try this.  Set your K3 up to display dBV.  Turn your K3 off.  
> Turn the K3 on.  Look at the value.  Wait.  See if it ever 
> changes from +99.9.  It never does here.

In setting up the dBV display, you must first set a reference. 
Select AFV (AF Voltage), allow the display to stabilize, then 
select dBV.  

If dBV is selected when initially applying power to the K3, the 
reference voltage is ALWAYS zero volts.  ANY audio output is an 
infinite increase over zero - thus 99.9 dBV.  

As Stef says, you must first set a reference (AFV) before the 
dBV (relative change) value has any meaning. 
  



> -----Original Message-----
> From: elecraft-bounces at mailman.qth.net 
> [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of alsopb
> Sent: Tuesday, September 16, 2008 4:50 PM
> To: elecraft at mailman.qth.net
> Subject: Re: [Elecraft] K3 dbV in 2.38
> 
> 
> 
> Hi Steff,
> 
> Thanks reply.
> 
> Try this.  Set your K3 up to display dBV.  Turn your K3 off.  
> Turn the K3 on.  Look at the value.  Wait.  See if it ever 
> changes from +99.9.  It never does here.
> 
> This works:
> Have any other parameter displayed in the VFO B area.  Turn 
> rig off.  Turn it on.  That parameter does display. Then turn 
> VFO B to display dbV.  In a matter of seconds, it displays OK.
> 
> It is like the K3 doesn't know the dBV display option has 
> been selected at
> startup-- at least here.
> 
> No big problem of course.
> 
> 73 de Brian/K3KO
> 
> 
> 
> Steef PA2A wrote:
> > 
> > Brian,
> > 
> > You have to let the AFV value stabilize first, and then the 
> dBV shows 
> > the value compared to the last AFV value. Page 36 of the 
> manual shows 
> > more details.
> > 
> > 73 's Steef PA2A
> > K3 1184
> > 
> > ----- Original Message -----
> > From: "alsopb" <alsopb at nc.rr.com>
> > To: <elecraft at mailman.qth.net>
> > Sent: Tuesday, September 16, 2008 2:47 PM
> > Subject: [Elecraft] K3 dbV in 2.38
> > 
> > 
> >>
> >> When turning on the K3, the dbV readout (AGC off) reads 
> +99.9.  Tech 
> >> menu
> >> is
> >> on and other parameters one can display are OK.
> >>
> >> It doesn't change until I get impatient and start tuning around, 
> >> turning menu main on/off or switching between parameters 
> with the VFO 
> >> B knob.  It is not clear what brings it to life. ( A two 
> minute wait 
> >> alone does not do
> >> it.)
> >> After that it works properly.
> >>
> >> Anybody else seeing this?
> >>
> >> 73 de Brian/K3KO
> >>
> >>
> >> --
> >> View this message in context: 
> >> http://n2.nabble.com/K3-dbV-in-2.38-tp1092599p1092599.html
> >> Sent from the Elecraft mailing list archive at Nabble.com.
> >>
> >> _______________________________________________
> >> Elecraft mailing list
> >> Post to: Elecraft at mailman.qth.net
> >> You must be a subscriber to post to the list.
> >> Subscriber Info (Addr. Change, sub, unsub etc.): 
> >> http://mailman.qth.net/mailman/listinfo/elecraft
> >>
> >> Help: http://mailman.qth.net/subscribers.htm
> >> Elecraft web page: http://www.elecraft.com
> >> 
> > 
> > _______________________________________________
> > Elecraft mailing list
> > Post to: Elecraft at mailman.qth.net
> > You must be a subscriber to post to the list.
> > Subscriber Info (Addr. Change, sub, unsub etc.):
> >  http://mailman.qth.net/mailman/listinfo/elecraft    
> > 
> > Help: http://mailman.qth.net/subscribers.htm
> > Elecraft web page: http://www.elecraft.com
> > 
> > 
> 
> -- 
> View this message in context: 
> http://n2.nabble.com/K3-dbV-in-2.38-tp1092599p1093680.html
> Sent from the Elecraft mailing list archive at Nabble.com.
> 
> _______________________________________________
> Elecraft mailing list
> Post to: Elecraft at mailman.qth.net
> You must be a subscriber to post to the list.
> Subscriber Info (Addr. Change, sub, unsub etc.):
>  http://mailman.qth.net/mailman/listinfo/elecraft    
> 
> Help: http://mailman.qth.net/subscribers.htm
> Elecraft web page: http://www.elecraft.com