Roger, I forgot to mention that my KPA100 switches in at 11 not 13 watts, and is cleaner at 11 watts (KPA100 In) than at 10 watts (KPA100 out).
73, Geoff GM4ESD ----- Original Message ----- From: "Geoffrey Mackenzie-Kennedy" <gm4...@btinternet.com> To: "Roger Dixon" <li...@irdixon.plus.com> Cc: "Elecraft Discussion List" <elecraft@mailman.qth.net> Sent: Tuesday, June 28, 2011 8:24 PM Subject: Re: [Elecraft] Higher Power on Transverter bands?? > Roger, > > A resistive power attenuator adding a db or so loss between the KPA100 and > transverter would allow you to run a little more power from the KPA100, > and > you would most likely not have to bypass it during receive. An extra db or > so addded to the transverter's receive IF output (28 MHz) should not > affect > the 432 MHz Rx noise figure by a noticeable amount - assuming some Rx gain > in the transverter. > > The thick film "non-inductive power resistors" available from Farnel are > satisfactory for use in a power attenuator at 28 MHz. > > 73, > Geoff > GM4ESD > > > On June 28, 2011 at 13:29 Z, Roger Dixon wrote: > >> I'm setting up a transverter band for 432MHz. >> >> I have a switched dummy load feeding the transverter at around the ten >> watt >> level. >> >> However, on a two tone test the output on 28MHz is considerably cleaner >> at >> 13 watts (KPA100 in) than it is at 10 watts. >> >> But - the transverter band set up will not let me go above 12 watts. Is >> there a work around other than using 28MHz straight and accepting the MHz >> frequency readout is wrong? >> >> Roger - G4BVY > > > ______________________________________________________________ > 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 -------------------------------------------------------------------------------- No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.901 / Virus Database: 271.1.1/3731 - Release Date: 06/28/11 07:34:00 ______________________________________________________________ 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
