Hmmmm - I have an unbuilt XV144 and was not going to buy the K144XV because I thought I had read somewhere that the XV144 would be sufficiently better to warrant using the XV144 - but that would generally be portable or at an alternative address and via a 100W PA. Now wondering if the additional kit to carry (the XV144) makes it worth it.
The K144XV will give 8-10 Watts, the XV144 20-25 Watts - strikes me as I'd have to drive a PA with at least 10 and that would be pushing the K144XV, whereas I could reasonably get 15 - 20 from the XV144 and not get it too hot (a known problem?) and not over-drive them either. 73 de M0XDF -- Mathematics is the language with which God has written the universe. -Galileo Galilei, physicist and astronomer (1564-1642) On 12 Feb 2010, at 23:29, Lyle Johnson wrote: > Comments below >> 1. Are the external (K144XV, 25 W) and internal (XV144, 10 W) 2m >> transverters identical with respect to receiver specs? >> > The noise figure at the antenna jack on the internal transverter may be > slightly higher due to the PIN diode T/R switch. The external > transverter has relay-based T/R switching. >> 2. Is there a schematic on the web for the internal 2m transceiver, XV144? >> > The schematic has not been posted yet. However, I just compared the > receiver section of the K144XV the XV144 and, apart from the relay > versus PIN diode switch, they are essentially identical. I say > essentially because a component value may be slightly different due to > stray or parasitic PCB layout differences, but the circuit topology and > active devices are identical. >> 3. If we want also to run an K432XV do we still have a choice between >> running an internal or an external 2m transverters? >> > Yes. The internal 2m module has its own set of switched IF connectors > on the KXV3A (not KXV3) interface. External Elecraft transverters hook > up to the external jacks. If you use external 2m and 70cm Elecraft > transverters, they will both conenct tot he K3. >> 4. IF the K3 has two receivers, can one listen on 2 m and the other on 70 >> cm? >> > > I believe the answer is yes, *but* one will have to be interfaced using > the regular antenna connections. The KXV3(A) only provides connection > to one receiver. This is not compatible with the usual "daisy chain" > configuration of XV-series transverters. > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
