Correct, Thanks
> On Jun 17, 2015, at 3:23 PM, ke9uw [via Elecraft] > <[email protected]> wrote: > > You mean a .01 uF? > > Sent from my iPhone > Chuck (Jack) > > On Jun 17, 2015, at 3:09 PM, KG5VU [via Elecraft] <[hidden email] > <x-msg://9/user/SendEmail.jtp?type=node&node=7604072&i=0>> wrote: > >> Don, >> >> I installed the .1 microfarad capacitor at C30, but this didn’t change the >> output. >> >> After testing the C30 fix, I subsequently changed R30 to 33 ohms and R11 to >> 4.7 ohms. This did change things, but did not entirely resolve the problem. >> >> At 13.8V input, my power meter shows 3.0 watts on both 20M and 40M. >> When I lower the input voltage to 9.0 volts, the meter shows 1.4 watts on >> 40M and 1.7 watts on 20M. >> I guess this is within or nearly within specs, but it’s odd that there is >> more output on 20M than on 40M. >> >> Anything else I should try, or should I just use it like this for a while? >> >> Thanks again, >> >> Lee >> KG5VU >> >> >> > On Jun 17, 2015, at 1:02 PM, Don Wilhelm <[hidden email] >> > <x-msg://9/user/SendEmail.jtp?type=node&node=7604071&i=0>> wrote: >> > >> > Lee, >> > >> > Yes, I would change that capacitor - there is a chance that it will >> > increase the output of the DDS and solve your power output problem. >> > There is a difference in some KX1s due to care during construction, >> > component tolerances, and a host of other factors. >> > Make certain you counted the toroid turns correctly - a straight wire >> > through the core is one turn, a full wrap around the core is 2 turns. >> > Count the turns that go through the core center. >> > >> > If all else fails, you can install the KX1 power mod. If you have a good >> > stock of 1/4 watt resistors you may not need to order the kit. Change R11 >> > to 4.7 ohms and R30 to 33 ohms. >> > >> > If those steps do not solve the power output situation, send me an >> > off-list email and we can make comparison measurements with my KX1. >> > >> > The KX1 audio is not 'earbusting', but is normally adequate. Yes, you may >> > want to try headphones or earbuds with a higher SPL rating. >> > >> > The "Quick Reference" is the only place in the KX1 manual where SLO, SHI, >> > and CAL are mentioned - I guess someone overlooked updating that portion >> > of the manual since the VERY early days of the KX1. Look at the listing of >> > menu items on page 65 and you will see DDS, BFO, and SIG to make those >> > settings. >> > This has been true since firmware rev 1.01. 1.02 is the latest version. >> > >> > 73, >> > Don W3FPR >> > >> > On 6/17/2015 10:58 AM, KG5VU wrote: >> >> Hi, >> >> >> >> I just finished building KX1 Serial Number 2879 which is the standard >> >> 20M/40M version. It's a great little rig but, I have a few issues, one >> >> major and two minor: >> >> >> >> A) On final testing I only had about 2.5W on 20M and 2.0W on 40M with >> >> power >> >> supply at 13.8V. I tried to compress the winding on L2, as suggested, >> >> but >> >> this only degraded the output slightly (2.2W on 20M and 1.8W on 40M). >> >> Checked the components on the board against the schematic and everything >> >> checked out OK. Any ideas on what else I should try? Any idea what RF >> >> voltage levels I should see at each stage? (I have several decent >> >> oscilloscopes for testing if need be.) >> >> >> >> B) The receiver is sensitive (I can hear 0.1 microvolt RF signal on 20 & >> >> 40) >> >> but the audio level (particularly for weak signals) is pretty low unless >> >> I >> >> advance the AF Gain control to full clockwise. Is this normal? Do I >> >> just >> >> need to experiment with different sets of ear-buds? >> >> >> >> C) The firmware on my KX1 is version 1.02. The Menu on my unit is >> >> different >> >> than the Manual. It does not include SLO, SHI or CAL. Instead there are >> >> SIG, DDS and BFO. Are support documents for revised version available? >> >> >> >> For background, I had no difficulty during assembly. The KX1 passed all >> >> tests except the transmit power output. >> >> >> >> I did make one mistake during assembly however. I mistakenly inserted a >> >> .1 >> >> microfarad capacitor at C30 instead of a .01 microfarad capacitor. Since >> >> everything seemed to be working, so I have not corrected this issue. >> >> Think >> >> this could be significant? >> >> >> >> >> > >> >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> <https://urldefense.proofpoint.com/v2/url?u=http-3A__mailman.qth.net_mailman_listinfo_elecraft&d=AwMFaQ&c=8hUWFZcy2Z-Za5rBPlktOQ&r=sJF6P5kPtoOq-4ibyL6MxBDxCHbuqOBlbl_K1oh3QFQ&m=vLL9glvPEFUTQSqhVPEQ4JvH-_d_bCJGumtAFOEcNTk&s=C9WnM4h4dyT871Ms4SPXbPqcC_1pUD1OSK949HS-f54&e=> >> Help: http://mailman.qth.net/mmfaq.htm >> <https://urldefense.proofpoint.com/v2/url?u=http-3A__mailman.qth.net_mmfaq.htm&d=AwMFaQ&c=8hUWFZcy2Z-Za5rBPlktOQ&r=sJF6P5kPtoOq-4ibyL6MxBDxCHbuqOBlbl_K1oh3QFQ&m=vLL9glvPEFUTQSqhVPEQ4JvH-_d_bCJGumtAFOEcNTk&s=uQjNRrbgkYAwcXN8h1z6wU7dEtlrjmz3ZW5Jbgkhd5A&e=> >> Post: mailto:[hidden email] >> <x-msg://9/user/SendEmail.jtp?type=node&node=7604071&i=1> >> >> This list hosted by: http://www.qsl.net >> <https://urldefense.proofpoint.com/v2/url?u=http-3A__www.qsl.net&d=AwMFaQ&c=8hUWFZcy2Z-Za5rBPlktOQ&r=sJF6P5kPtoOq-4ibyL6MxBDxCHbuqOBlbl_K1oh3QFQ&m=vLL9glvPEFUTQSqhVPEQ4JvH-_d_bCJGumtAFOEcNTk&s=6zYDMqK6pwoFgBt8VWqBiJCV3v7OLzYhXXVDTYE_HPk&e=> >> Please help support this email list: http://www.qsl.net/donate.html >> <https://urldefense.proofpoint.com/v2/url?u=http-3A__www.qsl.net_donate.html&d=AwMFaQ&c=8hUWFZcy2Z-Za5rBPlktOQ&r=sJF6P5kPtoOq-4ibyL6MxBDxCHbuqOBlbl_K1oh3QFQ&m=vLL9glvPEFUTQSqhVPEQ4JvH-_d_bCJGumtAFOEcNTk&s=rG3gvdrFsZeb2JiXk6cHo3_zASWyPcL9AOr0oAuaqf8&e=> >> Message delivered to [hidden email] >> <x-msg://9/user/SendEmail.jtp?type=node&node=7604071&i=2> >> >> >> If you reply to this email, your message will be added to the discussion >> below: >> http://elecraft.365791.n2.nabble.com/KX1-Power-Output-tp7604063p7604071.html >> <https://urldefense.proofpoint.com/v2/url?u=http-3A__elecraft.365791.n2.nabble.com_KX1-2DPower-2DOutput-2Dtp7604063p7604071.html&d=AwMFaQ&c=8hUWFZcy2Z-Za5rBPlktOQ&r=sJF6P5kPtoOq-4ibyL6MxBDxCHbuqOBlbl_K1oh3QFQ&m=vLL9glvPEFUTQSqhVPEQ4JvH-_d_bCJGumtAFOEcNTk&s=7SoDiq4rZl2oMkeRfyOM9PEkFqGH-w3QZ-WoJbzCWWI&e=> >> To start a new topic under [KX1], email [hidden email] >> <x-msg://9/user/SendEmail.jtp?type=node&node=7604072&i=1> >> To unsubscribe from Elecraft, click here >> <https://urldefense.proofpoint.com/v2/url?u=http-3A__elecraft.365791.n2.nabble.com_template_NamlServlet.jtp-3Fmacro-3Dunsubscribe-5Fby-5Fcode-26node-3D365791-26code-3DYy1oYXdsZXlAaWxsaW5vaXMuZWR1fDM2NTc5MXwtMTk0NzI5MzA2Nw-3D-3D&d=AwMFaQ&c=8hUWFZcy2Z-Za5rBPlktOQ&r=sJF6P5kPtoOq-4ibyL6MxBDxCHbuqOBlbl_K1oh3QFQ&m=vLL9glvPEFUTQSqhVPEQ4JvH-_d_bCJGumtAFOEcNTk&s=5RrAfpqJKfDcuYnuyw0m2XR4BU2M1GjUYI_1Htagylg&e=>. >> NAML >> <https://urldefense.proofpoint.com/v2/url?u=http-3A__elecraft.365791.n2.nabble.com_template_NamlServlet.jtp-3Fmacro-3Dmacro-5Fviewer-26id-3Dinstant-5Fhtml-2521nabble-253Aemail.naml-26base-3Dnabble.naml.namespaces.BasicNamespace-2Dnabble.view.web.template.NabbleNamespace-2Dnabble.view.web.template.NodeNamespace-26breadcrumbs-3Dnotify-5Fsubscribers-2521nabble-253Aemail.naml-2Dinstant-5Femails-2521nabble-253Aemail.naml-2Dsend-5Finstant-5Femail-2521nabble-253Aemail.naml&d=AwMFaQ&c=8hUWFZcy2Z-Za5rBPlktOQ&r=sJF6P5kPtoOq-4ibyL6MxBDxCHbuqOBlbl_K1oh3QFQ&m=vLL9glvPEFUTQSqhVPEQ4JvH-_d_bCJGumtAFOEcNTk&s=9h4tIWBRnwg1N9Bql8aaJCKATmx8GoXpNoG7w-IINoQ&e=>Chuck, >> KE9UW > > > If you reply to this email, your message will be added to the discussion > below: > http://elecraft.365791.n2.nabble.com/KX1-Power-Output-tp7604063p7604072.html > <http://elecraft.365791.n2.nabble.com/KX1-Power-Output-tp7604063p7604072.html> > To unsubscribe from KX1 Power Output, click here > <http://elecraft.365791.n2.nabble.com/template/NamlServlet.jtp?macro=unsubscribe_by_code&node=7604063&code=bWxob29wZXIxQGNvbWNhc3QubmV0fDc2MDQwNjN8LTEwOTUzNDA1Mjg=>. > NAML > <http://elecraft.365791.n2.nabble.com/template/NamlServlet.jtp?macro=macro_viewer&id=instant_html%21nabble%3Aemail.naml&base=nabble.naml.namespaces.BasicNamespace-nabble.view.web.template.NabbleNamespace-nabble.view.web.template.NodeNamespace&breadcrumbs=notify_subscribers%21nabble%3Aemail.naml-instant_emails%21nabble%3Aemail.naml-send_instant_email%21nabble%3Aemail.naml> -- View this message in context: http://elecraft.365791.n2.nabble.com/KX1-Power-Output-tp7604063p7604073.html Sent from the Elecraft mailing list archive at Nabble.com. ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
