[Elecraft] K2 Alignm.&Test, Part I, unexpected display of 160m band

[Thomas Martin]

Thanks Mario --
Yes, I can hear relay switching when changing to
every band and I also expect the I/O controller to
be the source of this unexpected 160m band
display.
OK about the relay delay which was
introduced some time ago -- but it just sounds to
be a bit longer than I remember.

73 Thomas, DF7TV 

Von:            	Mario Lorenz <ml@vdazone.org> An:
            	elecraft@mailman.qth.net Betreff:    
   	Re: [Elecraft] K2 Alignm.&Test, Part I,
unexpected display of 160m band Datum:   	Thu, 26
Dec 2002 12:58:48 +0100

> > during Alignment and Test, Part I of my K2
> > (firmware v. 2.03d, I/O controller v. 1.07,
> > S/N 3105) I did the relay test tapping the
> > BAND +/- switches. I was surprised that the
> > 160m band is displayed (1900 kHz) additionally
> > to all the other bands.
> 

> I cannot help you here. My guess is that the IOC
> checks for the presence by temporarily
> programming 160RY or RXRY as input and see if it
> can see the level of RYCOM, so I would suggest
> you double-check for solder shorts around the
> IOC and the 160RX option connector.


> > Another observation is that the switching of
> > the relays does not sound as loud (and a bit
> > more delayed) than it did with earlier K2s I 
> > built (S/N 2383, 2759).


> I am not sure about loudness (this might again
> mean some wiring problems around the IOC so that
> not all the relays switch when they should - do
> you hear relay clicks when changing to every
> band ?


-- 
Thomas Martin, Stuttgart, Germany
http://www.qsl.net/df7tv