[Elecraft] K2 with 144Mhz transverter

[S55M]

Hello Eric!

No it wont go neither that way.
The characteristics of my HP are not good enough for such measurments.So i
changed aproach and now i do tests with another RX directly connected to K2
IF TX out on 14Mhz via the ATT and at the same time coupling in signal
generator at low level (abt -125dBm 5,10,20KHz away from center
frequency.Will try to measure also noise increments whithout and with
carrier .I just must take care to not overload the RX.
First impresion is not so bad but i will write something after the
tests.....

73's
Adi


----- Original Message ----- 
From: "Eric Swartz WA6HHQ - Elecraft" <eric at elecraft.com>
To: "S55M" <s55m at siol.com>
Cc: "Elecraft" <elecraft at mailman.qth.net>
Sent: Friday, March 11, 2005 5:54 PM
Subject: Re: [Elecraft] K2 with 144Mhz transverter


> It looks like your RBW is way too high, which will increase the apparent
> noise level by a large amount. It should be set to 100 Hz also. Set your
> sweep to auto so it will go slowly enough to make the measurement. It
> will take some time for the sweep.
>
> 73, Eric
>
>
> S55M wrote:
> >
> > Hy Eric!
> >
> > Thanks for Your answer.
> > The measurment setup is :
> > VBW 100Hz
> > RBW 10kHz
> > Span 500KHz
> >
> > Any ideas what went wrong????
> >
> >
> > Adi
> > ----- Original Message ----- 
> > From: "Eric Swartz - WA6HHQ, Elecraft" <eric at elecraft.com>
> > To: "S55M" <s55m at siol.com>
> > Cc: "Elecraft" <elecraft at mailman.qth.net>
> > Sent: Thursday, March 10, 2005 6:53 PM
> > Subject: Re: [Elecraft] K2 with 144Mhz transverter
> >
> >
> >
> >>Hi Adi,
> >>
> >>There must be something wrong with your K2 or measurement set up. As can
> >
> > be seen
> >
> >>from the phase noise plot on our web page (under radio comparisons) the
K2
> >
> > TX
> >
> >>signal is better than -130 dBc when you get 10-20 kHz away from the
> >
> > carrier.
> >
> >>Also, what b/w and span were you using on your 8590 analyzer?
> >>
> >>On the receive side the XV and K2 pair are among the best out there. I
do
> >
> > not
> >
> >>know what was different about his set up.
> >>
> >>73, Eric
> >>
> >>
> >>S55M wrote:
> >>
> >>>OK...now I'm getting really angry HI HI :))...
> >>>First the transmitter (easy one)
> >>>
> >>>I made a measurment with my HP8590A of the transmitted signal from K2
to
> >>>transwerter (signal after the first buffer).
> >>>When i moove 100 KHz away from carier there is -73dBc of signal
> >
> > remaining.
> >
> >>>After a little bit of conversation with local gurus probably this not
to
> >>>good number (compared dBc's of other same 1.st class rtx's are -90
> >>>to -100dBc)
> >>>
> >
> >
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