[Elecraft] k2 vco alignment problem
I finally got my k2 #05233 completed and started the alignment process. I ran into some issues and decided to go back and re-check the tests for phases I and II. The tests during their construction were all ok and on the money. This time when I got to the VCO alignment stage the following occurs. Checking the voltage at r30 at 4000 hz was adjustable to 6.0 vdc with no problem. The tone heard on my headset warbles slowly then faster until the tone gets solid. Any movement of the VFO kills the tone but the voltages stay solid on 80 meters. When checking the other bands I get 8.3 vdc and it does not change with L30, or the VFO. The tone SOMETIMES starts the slow warble thru to solid and the voltages are back to the readings during the construction! Using the schematic have traced the problem, maybe, to T5. When I touch the transformer the tone goes away if it is there and does not come back until I cycle the power to the rig. I can hear changes in my headset when probing around the T5 areas. This is the only location I hear any changes. I have removed the T5, reworked the leads and reinstalled it with no change. I have verified the proper windings per the manual. Thanks in advance for your input. Typical readings on 40 m. 1.9 @ 7000 and 3.89 @7300. 73 Dan af4lb __ 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] K2 alignment problem
I have recently completed phase III build of my K2 and started the alignment process. > A couple of problems developed during the alignment so I went back > and started re-checking phases I and II resistance and voltage checks. > During the initial construction of these two phases all of the resistance > and voltage checks were within specified ranges. This time the VCO > voltages were off. I am able to get the 6vdc at R30 with no problem. It > was fully adjustable to that value at 1 turn from the top of L30. The > voltages on 80 meters did drop from 6 vdc at 4ooo hz to 1.7 vdc at 3500 hz. When checking the voltages on > the other bands the voltage was a solid 8.3 vdc at the low and upper ends of > the bands and would not vary when moving the vfo. The display on the dmm did show the proper voltages while moving the vfo but then went back to 8.3 vdc when I stopped moving the dial. Adjusting the voltage at L30 did not change the voltage from 8.3 vdc. When I switched back to 80 meters I was able to adjust back to 6vdc as before. Anybody have any suggestions? I have searched the archives and found > nothing on this subject. I have checked the K13, K14, and K15 relay contacts > and they are working normally. Varactors D19 - D20 are not installed. The varactors were visibly checked by number and physical size. Could I have a problem with the Z1 shaft encoder or the U3 chip it drives? Any feedback will be greatly appreciated. Dan af4lb __ 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] K2 alignment problems
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[Elecraft] k2 5233 problems
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[Elecraft] K2 alignment problems
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[Elecraft] Fwd: K2 alignment problems
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[Elecraft] Email Forwarding test
__ 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] email problems
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[Elecraft] server test
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[Elecraft] One more main body posting test
I hope this will be the last test of my e-mail problem. Thanks for bearing with me on this. 73 Dan af4lb __ 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] Verizon subscriber problems
After several hours online and on the phone with whoever in India none of them could answer ANY of my questions regarding the problem posting to this reflector. Not ONE of them could answer the simple question"how do I change my format to plain text and not rich format!" I gave up on the so called experts. Verizon users. After you open the compose window look for the words Plain Text in red just above the main body area and below the subject line. This does NOT indicate that you are in the plain text mode. You have to click on it to go to the plain text mode! Give it a try. It has worked for me. 73 Dan af4lb __ 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
