Wayne, Don't forget the KXPA200 for the car!
73, Stephen G4SJP On 6 June 2011 16:26, Wayne Burdick <[email protected]> wrote: > We could offer a KXPA30 amplifier to deal with the need for more power > in a much smaller size. But not anytime soon.... > > 73, > Wayne > N6KR > > > On Jun 6, 2011, at 8:10 AM, juergen wrote: > > > > > Hi Dave > > > > The point you make about the added complexity is valid. > > > > However from a communications effectiveness point of 20 watts is a > > much more realistic power level, especially for SSB QSO's. Most of > > the Mil Manpacks use this output power level. > > > > I operate portable using mil HF manpacks with the power varying > > between 20 and 30 watts. I also have a SGC2020. 95% of the time on > > the first call I can get through and have the standard cookie > > cutter qso's and move on. If you try and do the same with 10 watts > > its very frustrating and much more of a struggle. These are NA Q's > > not local stuff. 5 to 10 watts is good power level for CW. For SSB > > 20 watts is far more effective, even with simple whips. Everyone > > will say its only 3db, however that 3db makes a huge difference when > > using simple antennas especially on SSB. > > > > While the AMP might be the answer, looking at the projected images > > and size, it will be a huge hassle carrying another box around. If > > you consider the size of Yaesu FT857, which runs a full 100 watts of > > output and its design is very neatly integrated into a tiny > > package, the KX3 with an external amplifier will be awkward by > > comparison. > > > > A FT857 with some AA batteries was carried to the top of Mount > > Kilimanjaro by HB9BXE. The operator successfully had many qso at 20 > > watts of output. He probably would not have packed a KX3 and > > amplifier if it was available then. > > > > I dont see why a duplicate of the KX3's PA could mot be offered as > > a piggy back box with another set of 8 batteries. I would rather > > follow that option than the 100 watt linear option. It certainly > > would be a lot smaller and portable than the 100 watt PA. I am sure > > many homebrewers will explore this option. > > > > Anyway time will tell. There is always the hombrew/modification > > option. The KX3 has a lot of potential and the design is 98% there. > > > > 73 > > John > > > > --- On Mon, 6/6/11, Dave KQ3T <[email protected]> wrote: > > > >> From: Dave KQ3T <[email protected]> > >> Subject: Re: [Elecraft] KX3 vs. K3 and other rigs? > >> To: [email protected] > >> Date: Monday, June 6, 2011, 6:40 AM > >> Here are a couple of additional > >> factors to consider. > >> > >> 1. Increasing the output power to 20 or 30 watts would have > >> an impact on > >> either the weight of the KX3 (more batteries needed to > >> maintain a > >> desired battery life) or the battery life (the existing > >> batteries would > >> not last as long at the higher power level). > >> > >> 2. It is much easier to add an external power amplifier, if > >> desired, > >> than to significantly improve receiver performance at a > >> later date. > >> > >> 73, > >> Dave, KQ3T > >> > >> On 6/6/2011 12:25 AM, juergen wrote: > >>> Hi Kristinn > >>> > >>> What i dont get is why people expect so much > >> performance from a > >>> so called portable rig. A rig designed for portable > >> operation generally uses poor antennas and is optimized for > >> weight, size and battery life. > >>> > >>> While its nice having great receiver specifications, > >> you do have to be realistic about the real world > >> requirements that is placed on the receiver when operating > >> portable. > >>> > >>> For me battery life, convenience and power output are > >> very important requirements rather than world beating > >> receiver specifications. > >>> I would gladly have 30 watts output over > >> ultimate receiver performance. Most military manpacks run 20 > >> to 30 watts for good reasons. > >>> > >>> 10 watts and a wire in the tree type of operation does > >> not demand a receiver with 100db of IMD dynamic > >> range. > >>> > >>> If the KX3 does deliver incredible receiver > >> performance for a bargain price I wont say NO, however I can > >> live with lesser receiver performance when operating with > >> marginal antennas. > >>> > >>> What I would prefer to see is an antenna tuner that > >> will tune a 9 to 13 ft whip on all bands, or alternatively a > >> end fed wire on all bands. A low noise figure receiver > >> is important when using short portable antennas. > >>> > >>> We all waiting for the KX3 tech specs with > >> baited breath. Time will tell whether we will get a 10,000 > >> dollar contest radio that fits into the palm of your hand! > >> After all my years of operating, I have yet to have my DC > >> receiver overload on 40 meters when operating portable with > >> full size low dipoles. > >>> > >>> 73 > >>> John > >>> > >> > >> ______________________________________________________________ > >> Elecraft mailing list > >> Home: http://mailman.qth.net/mailman/listinfo/elecraft > >> Help: http://mailman.qth.net/mmfaq.htm > >> Post: mailto:[email protected] > >> > >> This list hosted by: http://www.qsl.net > >> Please help support this email list: http://www.qsl.net/donate.html > >> > > ______________________________________________________________ > > Elecraft mailing list > > Home: http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/mmfaq.htm > > Post: mailto:[email protected] > > > > This list hosted by: http://www.qsl.net > > Please help support this email list: http://www.qsl.net/donate.html > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
