It's my understanding that the oscillation problem was solved long ago by (IIRC) a change in the K144XV pc board ground scheme. My K144XV is perfectly well behaved and I've not seen any queries to the support reflector about oscillation in many months. John, it might be worth a follow up with Elecraft support if you still want to use the internal transverter. Their philosophy is that it's not right until it is right, Hi!
Three points to consider when deciding which transverter to use: 1) The internal transverter is limited to 10 watts, while the outboard transverters will handle 20 watts PEP/CW. 2) The frequency stability of the external transverter is that of the xtal oscillator in the unit (a TCXO is available as an option) while the frequency stability of the internal transverter can be slaved to the K3's master reference oscillator with the K144RFLK option. For even greater stability, the K3's master reference oscillator can be slaved to an external 10 MHz frequency standard such as a GPS clock signal using the K3EXREF option. 3) The internal transverter is 2 meters only. He'll still want a separate box for 70 cm. 73, Ron AC7AC -----Original Message----- 1. The inboard transverter for 2 meters could never be made to function...the unit oscillated with great abandon, despite the best advices of Elecraft. If you look back through the archives, you will find several reports, including one from VK, reportiong this behavior. The K3 works flawlessly with the external units, which I built from kits. John Ragle -- W1ZI ========== On 9/15/2012 10:05 AM, Gary Gregory wrote: > *Has anyone got a K3 with the 2M and 70cm transverters got any > comments plus or minus as to performance. > > I don't have them myself but a VK is about to order his K3 and will be > adding these transverters. > > His interest is HF, 2 and 70cm and not 6M. > > I thought I would ask here as I don't know what to tell him due to > lack of experience in the higher bands. > > Off list or On is OK as long as it doesn't flood the reflector with > QRM.....:-) > > 73 > * ______________________________________________________________ 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
