Re: [Elecraft] K2 Original problem of High Current and Low Power
Jim, Your PA transistors had some collector to base leakage which increased the voltage on the base. The usual case is that the base voltage goes much higher and destroys Q11 and Q13, but it seems you are OK. I have seen that condition many times over the years (I have over 1000 repairs under my belt). So when you indicated high base voltage on the PA transistors I knew where it was coming from. The Q13 voltages you measured are within reason. So yes, install the new Q7 and Q8 transistors and you should be good. 73, Don W3FPR On 6/18/2019 7:32 PM, Jimithy66 wrote: Other problems discovered along the way with this partially assembled kit. Hi Don, Thank you so much for sticking with me on this. K2 #2438 Ver. A with no updates. I had measured 1.48V at bases of Q7 and Q8. (installed.) And as you suggested I removed the PA transistors and now measure 0.63 at base terminals with PAs out. I don't know how you figured that it was PA Q7 and Q8 that were bad Don but you were spot on ! It looks like the PA bias circuit is working but would like your opinion. __ 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 Message delivered to arch...@mail-archive.com
[Elecraft] K2 Original problem of High Current and Low Power
Other problems discovered along the way with this partially assembled kit. Hi Don, Thank you so much for sticking with me on this. K2 #2438 Ver. A with no updates. I had measured 1.48V at bases of Q7 and Q8. (installed.) And as you suggested I removed the PA transistors and now measure 0.63 at base terminals with PAs out. I don't know how you figured that it was PA Q7 and Q8 that were bad Don but you were spot on ! It looks like the PA bias circuit is working but would like your opinion. The table in the manual for Q13 says: E = 0.6V B= 1.3V C= 7.5V (With PA transistors in) My voltages are : E= 0.63 B= 1.2 C= 8.17 (With PA transistors out) Think I should go ahead and put the new PA transistors in leaving the old bias transistors Q11 and 13 in place ? Thanks 73, Jim / W1FMR PS... The 8T transmit voltage is 8.19v. __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] WTB KX3
I may have one you’re interested in. Email me at n1...@arrl.net Scott, N1SER -- Sent from: http://elecraft.365791.n2.nabble.com/ __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] K4 Panadapter positioning
It may not be explicitly stated in the FAQ, but there's no reason not to provide both orientations. Side-by-side provides more waterfall height (optimizing for time), while top-bottom provides more span (optimizing for frequency). The reason we're emphasizing side-by-side initially is that it clearly shows the relationship between the VFOs and their respective panadapters. 73, Wayne N6KR > On Jun 18, 2019, at 11:38 AM, Tom Warren wrote: > > Ron, > > Thanks for the reply. However, I don’t seem to find any reference to > repositioning a second panadapter in the FAQ. Would you mind > pointing me to the FAQ header where it is located? > > Thanks, Tom > — > > [Elecraft] K4 Panadapter positioning > <https://www.mail-archive.com/search?l=elecraft@mailman.qth.net=subject:%22%5C%5BElecraft%5C%5D+K4+Panadapter+positioning%22=newest> > Ron Durie > <https://www.mail-archive.com/search?l=elecraft@mailman.qth.net=from:%22Ron+Durie%22> > Tue, 18 Jun 2019 09:09:51 -0700 > <https://www.mail-archive.com/search?l=elecraft@mailman.qth.net=date:20190618> > Yes, it will. See K4 FAQs. > > Ron Durie > WB4OOA > Elecraft K-Line > 704-843-3681 > > __ > 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 > Message delivered to n...@elecraft.com __ 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 Message delivered to arch...@mail-archive.com
[Elecraft] K4 Panadapter positioning
Ron, Thanks for the reply. However, I don’t seem to find any reference to repositioning a second panadapter in the FAQ. Would you mind pointing me to the FAQ header where it is located? Thanks, Tom — [Elecraft] K4 Panadapter positioning <https://www.mail-archive.com/search?l=elecraft@mailman.qth.net=subject:%22%5C%5BElecraft%5C%5D+K4+Panadapter+positioning%22=newest> Ron Durie <https://www.mail-archive.com/search?l=elecraft@mailman.qth.net=from:%22Ron+Durie%22> Tue, 18 Jun 2019 09:09:51 -0700 <https://www.mail-archive.com/search?l=elecraft@mailman.qth.net=date:20190618> Yes, it will. See K4 FAQs. Ron Durie WB4OOA Elecraft K-Line 704-843-3681 __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Roofing Filters
That explains it, thanks. John KK9A Sent via the Samsung Galaxy 7 edge, an AT 4G LTE smartphone. On Tue, Jun 18, 2019 at 1:12 PM Nr4c wrote: > The old 400Hz filter was a 8 pole variety. It’s been replaced by a new and > probably better 6 pole filter. As have several others. > > Sent from my iPhone > ...nr4c. bill > > > > On Jun 18, 2019, at 12:04 PM, "j...@kk9a.com" wrote: > > > > So does Elecraft no longer sell this filter: > > http://www.inrad.net/product.php?productid=150=140 > > > > John KK9A > > > > Sent via the Samsung Galaxy 7 edge, an AT 4G LTE smartphone. > > > > > >> On Tue, Jun 18, 2019 at 11:34 AM Wayne Burdick > wrote: > >> > >> The KFL3A is an 8-pole filter. > >> > >> The KFL3C is a 6-pole filter. In a 400 Hz bandwidth, performance will be > >> virtually indistinguishable from the 8-pole. > >> > >> 73, > >> Wayne > >> N6KR > >> > >> > >> > >> > >>> On Jun 18, 2019, at 8:21 AM, j...@kk9a.com wrote: > >>> > >>> The new Elecraft site is a little vague regarding roofing filters so I > am > >>> going by memory. I have two filters in my cart KFL3A-2.8K-IR and > >> KFL3C-400 > >>> for my third K3S. Before I hit the purchase button I want to be sure > that > >>> these are both 8 pole filters. > >>> > >>> John KK9A > >>> > >>> Sent via the Samsung Galaxy 7 edge, an AT 4G LTE smartphone. > >>> __ > >>> 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 > >>> Message delivered to n...@elecraft.com > >> > >> > > __ > > 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 > > Message delivered to n...@widomaker.com > > __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] FSK D transmit
Perhaps you have a recent configuration backup. Load that into your K3. Should get you back to a working radio. Bob, K4TAX Sent from my iPhone > On Jun 18, 2019, at 12:19 PM, Jim Rhodes wrote: > > OK, I have done some fat fingered thing to my K3. For years I have been > running RTTY in FSK D mode. All of a sudden, right before Field Day of > course, it decides that it will not transmit in that mode. Not using PTT > over com port, direct using my home made interfaces I have been using for > years or even pressing the XMIT button on the front panel. When I press > XMIT the VFO B display says "N/A". All other modes seem to be fine > including AFSK A and DATA A. So something tells me this has to be operator > error, but I don't remember changing anything. Does anyone have an idea > what I did? > __ > 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 > Message delivered to rmcg...@blomand.net > __ 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 Message delivered to arch...@mail-archive.com
[Elecraft] FSK D transmit
OK, I have done some fat fingered thing to my K3. For years I have been running RTTY in FSK D mode. All of a sudden, right before Field Day of course, it decides that it will not transmit in that mode. Not using PTT over com port, direct using my home made interfaces I have been using for years or even pressing the XMIT button on the front panel. When I press XMIT the VFO B display says "N/A". All other modes seem to be fine including AFSK A and DATA A. So something tells me this has to be operator error, but I don't remember changing anything. Does anyone have an idea what I did? __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Roofing Filters
Hello John is that not from Inrad who are a different vendor to Elecraft? Or did Elecraft supply Inrad filters at one time? I have no idea I've only just started looking. 73 Conrad PA5Y -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of j...@kk9a.com Sent: 18 June 2019 18:04 To: Wayne Burdick Cc: Elecraft Reflector Subject: Re: [Elecraft] Roofing Filters So does Elecraft no longer sell this filter: http://www.inrad.net/product.php?productid=150=140 John KK9A Sent via the Samsung Galaxy 7 edge, an AT 4G LTE smartphone. On Tue, Jun 18, 2019 at 11:34 AM Wayne Burdick wrote: > The KFL3A is an 8-pole filter. > > The KFL3C is a 6-pole filter. In a 400 Hz bandwidth, performance will > be virtually indistinguishable from the 8-pole. > > 73, > Wayne > N6KR > > > > > > On Jun 18, 2019, at 8:21 AM, j...@kk9a.com wrote: > > > > The new Elecraft site is a little vague regarding roofing filters so > > I am going by memory. I have two filters in my cart KFL3A-2.8K-IR > > and > KFL3C-400 > > for my third K3S. Before I hit the purchase button I want to be sure > > that these are both 8 pole filters. > > > > John KK9A > > > > Sent via the Samsung Galaxy 7 edge, an AT 4G LTE smartphone. > > __ > > 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 Message delivered to > > n...@elecraft.com > > __ 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 Message delivered to g0...@g0ruz.com __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Roofing Filters
The old 400Hz filter was a 8 pole variety. It’s been replaced by a new and probably better 6 pole filter. As have several others. Sent from my iPhone ...nr4c. bill > On Jun 18, 2019, at 12:04 PM, "j...@kk9a.com" wrote: > > So does Elecraft no longer sell this filter: > http://www.inrad.net/product.php?productid=150=140 > > John KK9A > > Sent via the Samsung Galaxy 7 edge, an AT 4G LTE smartphone. > > >> On Tue, Jun 18, 2019 at 11:34 AM Wayne Burdick wrote: >> >> The KFL3A is an 8-pole filter. >> >> The KFL3C is a 6-pole filter. In a 400 Hz bandwidth, performance will be >> virtually indistinguishable from the 8-pole. >> >> 73, >> Wayne >> N6KR >> >> >> >> >>> On Jun 18, 2019, at 8:21 AM, j...@kk9a.com wrote: >>> >>> The new Elecraft site is a little vague regarding roofing filters so I am >>> going by memory. I have two filters in my cart KFL3A-2.8K-IR and >> KFL3C-400 >>> for my third K3S. Before I hit the purchase button I want to be sure that >>> these are both 8 pole filters. >>> >>> John KK9A >>> >>> Sent via the Samsung Galaxy 7 edge, an AT 4G LTE smartphone. >>> __ >>> 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 >>> Message delivered to n...@elecraft.com >> >> > __ > 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 > Message delivered to n...@widomaker.com __ 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 Message delivered to arch...@mail-archive.com
[Elecraft] K4 Panadapter positioning
Yes, it will. See K4 FAQs. Ron Durie WB4OOA Elecraft K-Line 704-843-3681 __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Roofing Filters
So does Elecraft no longer sell this filter: http://www.inrad.net/product.php?productid=150=140 John KK9A Sent via the Samsung Galaxy 7 edge, an AT 4G LTE smartphone. On Tue, Jun 18, 2019 at 11:34 AM Wayne Burdick wrote: > The KFL3A is an 8-pole filter. > > The KFL3C is a 6-pole filter. In a 400 Hz bandwidth, performance will be > virtually indistinguishable from the 8-pole. > > 73, > Wayne > N6KR > > > > > > On Jun 18, 2019, at 8:21 AM, j...@kk9a.com wrote: > > > > The new Elecraft site is a little vague regarding roofing filters so I am > > going by memory. I have two filters in my cart KFL3A-2.8K-IR and > KFL3C-400 > > for my third K3S. Before I hit the purchase button I want to be sure that > > these are both 8 pole filters. > > > > John KK9A > > > > Sent via the Samsung Galaxy 7 edge, an AT 4G LTE smartphone. > > __ > > 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 > > Message delivered to n...@elecraft.com > > __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Roofing Filters
The KFL3A is an 8-pole filter. The KFL3C is a 6-pole filter. In a 400 Hz bandwidth, performance will be virtually indistinguishable from the 8-pole. 73, Wayne N6KR > On Jun 18, 2019, at 8:21 AM, j...@kk9a.com wrote: > > The new Elecraft site is a little vague regarding roofing filters so I am > going by memory. I have two filters in my cart KFL3A-2.8K-IR and KFL3C-400 > for my third K3S. Before I hit the purchase button I want to be sure that > these are both 8 pole filters. > > John KK9A > > Sent via the Samsung Galaxy 7 edge, an AT 4G LTE smartphone. > __ > 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 > Message delivered to n...@elecraft.com __ 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 Message delivered to arch...@mail-archive.com
[Elecraft] Roofing Filters
The new Elecraft site is a little vague regarding roofing filters so I am going by memory. I have two filters in my cart KFL3A-2.8K-IR and KFL3C-400 for my third K3S. Before I hit the purchase button I want to be sure that these are both 8 pole filters. John KK9A Sent via the Samsung Galaxy 7 edge, an AT 4G LTE smartphone. __ 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 Message delivered to arch...@mail-archive.com
[Elecraft] K4 Panadaptor positioning
Will it be possible to reposition the second panadapter ‘under’ the first instead of beside it when viewing it on a PC monitor ? Tom W4TMW __ 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 Message delivered to arch...@mail-archive.com
