Mark, I am out of "help" on that one. If you have not already, it is time to email support at elecraft dot com.
73, Don W3FPR On 9/5/2010 6:46 PM, Mark Adams wrote: > Don, > > I rearranged the XV432 to be driven at 5W with my FT817 (my uW IF radio). > Now, all the tests up to the one originally in question, were fine. I still > have 0 Volts at TP5. > > What is new: When I rotate R22 CW while feeding 5W from the 817, at about > 25% rotation of R22, the overload LEDs on the main board light. I rechecked > the pin headers and shorting blocks and they are correct. > > Myron, > > You suggested the following: > > 1. Check the bias voltage to the PA. TP5 samples the PA output. Is the > bias voltage still the same as when you set it previously. > > YES. > > 2. Check the local LO. If your adjustment of that stage ended up right on > the edge, sometimes it will stop oscillating and will need re-adjustment. > > The LO starts AOK each time I power it up. > > 3. Make sure the XVTR is in transmit mode while making these adjustments. > > YES. It was. All set there. > > I found that some adjustments when peaking TP5 voltage didn't seem to do > much. Even sometimes a bad coax between the rig IF and the XVTR can cause > systems like you describe. > > I tried 2 different coax jumpers with no change. > > 73, > Mark K2QO > FN03ra > > > > On Sun, Sep 5, 2010 at 5:13 PM, Don Wilhelm<w3...@embarqmail.com> wrote: > >> Mark, >> >> I am going to guess that you are plagued with the gremlin of 432 MHz energy >> getting back to the K60XV and interfering with its power measurement >> mechanism. >> >> Plug the XV432 for high power input and drive it from the BNC on the K2 >> until you get it aligned. >> If all goes well when connected that way, put a 30 or 50 MHz low pass >> filter between the K60XV output and the transverter(s). One of the little >> in-line Mini-Circuits filters works well. >> >> 73, >> Don W3FPR >> >> >> On 9/5/2010 4:54 PM, Mark Adams wrote: >> >>> Hi Gang, >>> >>> Just finished my XV432 expecting to use it next weekend in the ARRL VHF in >>> my rover setup. Murphy has hit and maybe someone can give me a hand. >>> >>> My setup is a K2/XV60/IO module running xverter duty with an XV222 using >>> the >>> split IF, Elecraft control cable, etc. I've used this for a few years and >>> it >>> works FB. >>> >>> Now for the XV432. I am on page 29 running Part VI-Filter Alignment. All >>> is >>> good up to the last checkbox at the bottom right of the page. I key the >>> rig >>> and get a 2V. On page 30, I continue with adjustment of L15, L16, L17. The >>> readings are changing as expected. Then I go on to FL1 and FL2 to get a >>> higher reading at TP5. At the first FL and turn of the screw, the voltage >>> at >>> TP5 goes to 0. And that is all. I cannot get volts at TP5. I checked to >>> make >>> sure the K2 is putting out power and I have milliVolts at the TX in >>> connector. >>> >>> I did use a small metal Stanley screwdriver to make the fateful >>> adjustment, >>> but cannot see how this might matter. It would help to have a bunch of RF >>> voltages to check to determine my problem. >>> >>> If I do not have this up and running by Thursday, my big rove plans will >>> be >>> shot as I've revamped the rover setup to include this transverter. >>> >>> >>> 73, >>> Mark K2QO >>> FN03ra >>> >>> > ______________________________________________________________ > 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 > ______________________________________________________________ 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
