HI That is also excatly what the userguide are saying. But if it is true what mentioned in this thread, that the power fall off fast approaching 29MHZ then it is hard to do with the K2, as mentioned i can hardly get 1/3 of the 1 mW out at the 145.5 on the Xv or 29.5 on the low power from the K2. and about 1-2 W on a 10 W setting on high power out. So if this is normal behaivur of the K2, then it do not make much sense to me to align at 29.5 MHz. Ofcause the option is that the band filter on my K2 is having wrong centre and that the power fall off quicker then on other K2.
So there for my idea of tunning the XV with in the good area of the K2, that still cover all the CW and SSB part in OZ. A issue that would be good to get clear on as i have a XV50 comming to me soon. OZ1BZJ.. Michael. On Wed Feb 22 13:38 , "John D"Ausilio" sent: My understanding is that you peak the gain at 145.5 in order to achieve a reasonable compromise between gain and noise figure at the low end of 144 .. de w1rt/john On 2/22/06, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote: > > Hi Guys > > Thanks Don, Matt and others answering on my issue. > > I have now seen the light. I was deeply in to a engineering mode, where i > tried to do everything according to spec. The spec on the XV144 say > IF input from 28MHz to 30MHz and a output from 144-146 MHz. Then the thing > need to operate in that area and the natural place for alignment > would be 145MHz in the midt of the window. And being in engineering mode my > thinking was that the K2 was designed to match the XV144 > > Now you guys brought me back to real world. Why would I run the transverter > with K2 That do not do FM above 144.8, that in Denmark are > the border line to the the FM area (144.8 and up.) > > So trying to cover most used areas for CW and SSB i should properly align at > 144.3. Where the output from K2 should be at full level and no > issues should be seen. > > Sometime i guess my education is of no use where looking at all the spec and > stuff are the thing to do, when just a little common sense it > needed. :-) > > Br. > > OZ1BZJ Michael > > A engineer proberly expirence what one rock band has called a Momentary Lapse > of Reason > > > > > > > > > > On Tue Feb 21 23:15 , "Don Wilhelm" sent: > > > Michael, > > That is normal - the K2 spec for 10 meter coverage is 28.0 to 28.8 MHz at 10 > watts output and it falls off more rapidly at the high frequency end than > the low end. > You may be able to increase the usable coverage at the expense of the > maximum available output by peaking the 10 meter bandpass filter at some > frequency higher than the 28.2 point that is indicated in the manual. I > would suggest peaking at 28.8 or even higher if you need to achieve good > power output over the entire 28.0 to 30.0 MHz. If you do that, check the > maximum power output at both ends of your chosen band and try to balance the > maximum available power at both ends - adjust the peaking frequency up or > down to achieve good coverage over your desired range. > > 73, > Don W3FPR > > > -----Original Message----- > > > > The SSB Firmware was ok, version 1.8 so no problem there. > > > > Now i have found the issue on the K2, but not the solution. The desribed > > issue seen on the low power out are comming from the 28-30 Mhz. > > if i check > > indicated power by the internal powermeter it drops over the > > freq. with the > > power set for 5W i do reach 5.4 W on 28 Mhz at 29 Mhz it is 4,9, still ok > > but at 30 Mhz it is down at 0,3 W > > So trying 10 W 29 Mhz only goes to same 4.9, so a rolloff on increasing > > freq. are seen. Proberly normal, but passband seems to be to narrow ??? > > > > > > Any idea is this normal ?? > > Thanks in advance > > > > Br. > > > > OZ1BZJ > > Michael > > > > > _______________________________________________ > Elecraft mailing list > Post to: Elecraft@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@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
