Re: [Elecraft] k2 clicking
got 25 on order from ebay -Original Message- From: Ron D'Eau Claire Sent: Thursday, July 07, 2011 6:13 PM To: 'John Cooper' ; 'elecraft' Subject: RE: [Elecraft] k2 clicking John, that's more evidence that it's the forward and reverse power detection diodes in the KPA100 that failed since when you remove it the power detection function is handled by a separate diode detector in the base K2. The base K2 doesn't have a full forward/reverse power detection circuit to calculate SWR. It uses a simpler diode detector to only measure the output power at the antenna connector and reports the power assuming a 50 ohm non-reactive load. The detector output tells the K2 when it is producing the power requested by the POWER control. Ron AC7AC -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of John Cooper Sent: Thursday, July 07, 2011 4:10 PM To: d...@w3fpr.com; elecraft Subject: Re: [Elecraft] k2 clicking k2 by itself transmit fine, when hooked just to kat100 without kpa 100 it goes hi current during transmit no matter 2 watts or 15 watts. -Original Message- __ 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
Re: [Elecraft] k2 clicking
John, That is a good indication that the diodes D1 and D2 have been "zapped" in the KAT100. It is also possible that D16 and D17 in the KPA100 have been zapped too, so if you are ordering 1N5711s, I would order at least 4 of them. 73, Don W3FPR On 7/7/2011 7:10 PM, John Cooper wrote: > k2 by itself transmit fine, when hooked just to kat100 without kpa 100 it > goes hi current during transmit no matter 2 watts or 15 watts. > > __ 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
Re: [Elecraft] k2 clicking
John, that's more evidence that it's the forward and reverse power detection diodes in the KPA100 that failed since when you remove it the power detection function is handled by a separate diode detector in the base K2. The base K2 doesn't have a full forward/reverse power detection circuit to calculate SWR. It uses a simpler diode detector to only measure the output power at the antenna connector and reports the power assuming a 50 ohm non-reactive load. The detector output tells the K2 when it is producing the power requested by the POWER control. Ron AC7AC -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of John Cooper Sent: Thursday, July 07, 2011 4:10 PM To: d...@w3fpr.com; elecraft Subject: Re: [Elecraft] k2 clicking k2 by itself transmit fine, when hooked just to kat100 without kpa 100 it goes hi current during transmit no matter 2 watts or 15 watts. -Original Message- __ 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
Re: [Elecraft] k2 clicking
Assuming you meant KPA100 and not KAT100 -- It seems that almost always the issue is failed diodes in the power detection circuit used to measure SWR and drive the tuner - apparently from static discharge from the antenna. In this case, the KPA100 diodes have failed. The KAT2 diodes appear to be fine since it works. High Current is a common report coupled with bad diodes. The KPA100 uses the forward power sensed by the diodes to set the output power to match what you have requested with the POWER knob. No feedback means the rig drives the finals to full output, often looking into a high SWR since the diodes are also necessary for the tuner to work. Ron AC7AC -Original Message- ok the relay that switches the high power was clicking because the fuse in the rig runner was bad replaced that stopped clicking think problem in kat 100 Left k2 hooked during storm now acts funny. Have the k2 with amp and tuner in ec2. Tuner tunes but leds on kat100 don’t light up. Also shows hi curr on screen. KAT100 shows error code E243. When kpa100 switched something starts clicking one of the relays not sure which one yet. kat2 tuner shows no errors just when kat100 hooked up. __ 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
Re: [Elecraft] k2 clicking
k2 by itself transmit fine, when hooked just to kat100 without kpa 100 it goes hi current during transmit no matter 2 watts or 15 watts. -Original Message- From: John Cooper Sent: Thursday, July 07, 2011 5:56 PM To: d...@w3fpr.com ; elecraft Subject: Re: [Elecraft] k2 clicking ok the relay that switches the high power was clicking because the fuse in the rig runner was bad replaced that stopped clicking think problem in kat 100 -Original Message- From: John Cooper Sent: Thursday, July 07, 2011 5:36 PM To: d...@w3fpr.com ; elecraft Subject: Re: [Elecraft] k2 clicking kpa100 shows e 12 on error list -Original Message- From: John Cooper Sent: Thursday, July 07, 2011 5:13 PM To: d...@w3fpr.com ; elecraft Subject: [Elecraft] k2 clicking Left k2 hooked during storm now acts funny. Have the k2 with amp and tuner in ec2. Tuner tunes but leds on kat100 don’t light up. Also shows hi curr on screen. KAT100 shows error code E243. When kpa100 switched something starts clicking one of the relays not sure which one yet. kat2 tuner shows no errors just when kat100 hooked up. __ 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 __ 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
Re: [Elecraft] k2 clicking
ok the relay that switches the high power was clicking because the fuse in the rig runner was bad replaced that stopped clicking think problem in kat 100 -Original Message- From: John Cooper Sent: Thursday, July 07, 2011 5:36 PM To: d...@w3fpr.com ; elecraft Subject: Re: [Elecraft] k2 clicking kpa100 shows e 12 on error list -Original Message- From: John Cooper Sent: Thursday, July 07, 2011 5:13 PM To: d...@w3fpr.com ; elecraft Subject: [Elecraft] k2 clicking Left k2 hooked during storm now acts funny. Have the k2 with amp and tuner in ec2. Tuner tunes but leds on kat100 don’t light up. Also shows hi curr on screen. KAT100 shows error code E243. When kpa100 switched something starts clicking one of the relays not sure which one yet. kat2 tuner shows no errors just when kat100 hooked up. __ 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 __ 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
Re: [Elecraft] k2 clicking
kpa100 shows e 12 on error list -Original Message- From: John Cooper Sent: Thursday, July 07, 2011 5:13 PM To: d...@w3fpr.com ; elecraft Subject: [Elecraft] k2 clicking Left k2 hooked during storm now acts funny. Have the k2 with amp and tuner in ec2. Tuner tunes but leds on kat100 don’t light up. Also shows hi curr on screen. KAT100 shows error code E243. When kpa100 switched something starts clicking one of the relays not sure which one yet. kat2 tuner shows no errors just when kat100 hooked up. __ 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
