Re: [Elecraft] KPA-1500 tuner questions
On 3/13/2019 10:45 PM, Peter Dougherty wrote: Well that's just it, the SWR is very, very high in the phone portions of both 40 and 80. Here's a VERY old solution that W6NL has taught to his EE classes. When I asked him about it, he says it's not his original idea, far older than him. Tune your 80M dipole to 3675 kHz, feed it with a half-wave of 50 ohm coax starting at the antenna, then a quarter wave of 75 ohm line. Line lengths are at 3675 kHz. Add 50 ohm coax as needed to reach the shack, or coil up the excess if those two lengths are too long. The result will be SWR below 2:1 from 3500 kHz to 3900 kHz. With good RG213 and RG11, Line loss is about 0.5 dB at the resonant point and about 0.7 dB at the limits. If you want to do some engineering, you can probably tame that 40M antenna too. Here's a tutorial applications note. http://k9yc.com/PacificonSmithChart.pdf 73, Jim K9YC __ 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] KPA-1500 tuner questions
Good point. Done! What I have now is both tuners are ONLY in on the SSB portions of 40/80. Everywhere else the Palstar is electrically bypassed...but I can't remove it entirely for reasons stated in my previous posts. - pjd -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of Paul Baldock Sent: Wednesday, March 13, 2019 10:46 AM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] KPA-1500 tuner questions At 03:01 AM 3/13/2019, you wrote: >The problem you will run into is if the antenna SWR changes above the >threshold for both the KPA1500 tuner and HF Auto bothtuners will >initiate a retune and the two will be fighting each other. I suggest you set KPA1500 "ATU HISWR RETUNE" to "OFF". The last thing you want is for the ATU to start tuning when you don't expect it, such as when you choose the wrong antenna by mistake. - Paul __ 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] KPA-1500 tuner questions
Hi Bob, Please see my earlier message. It's not possible to use the internal ATU in the KPA-1500 for the SSB portions of 40 and 80 meters. I use both SSB and CW on both bands. My 80m antenna is a vee that I can fold back the ends for SSB contests, and that works to a degree, but I can't work both CW and SSB in the same band. As a DXer that's not an acceptable solution. 40 is far worse. It's a shorty-40 that only has 175 kHz below 2:1, and about 200 kHz below 3:1, where power will start folding back. I vehemently dislike the Palstar. I think it's a huge waste of money, but frankly I can't see any other way to accomplish what I need to do. I can't put up a full-size 40m Yagi--my tower's very close to being overloaded now--so I have to try and make a silk purse out of the proverbial sow's ear. Yes, two tuners is a horrible solution, but the only other way is to ditch the Palstar and give up SSB operation entirely on 40m--and that's absolutely not an option. I have one feedline going from the shack to the tower and an automatic antenna switch outside. - pjd -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of Bob McGraw K4TAX Sent: Wednesday, March 13, 2019 8:58 AM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] KPA-1500 tuner questions Personally I'd try to correct the antenna issue so the tuner in the KPA1500 performs as designed. The antenna should be able, with the KPA1500 tuner, to cover then entire 75/80M band. Although I use the KAT500, same equivalent circuit, I have no issue with full band coverage on 75/80M. As to the Palstar, I'd take Jim's advice, and find it a new home. Two automatic tuners in line is a formula for disaster as I view it. If you wish to use the Palstar all of the time, then set the one in the KPA1500 to bypass all of the time. 73 Bob, K4TAX On 3/13/2019 5:01 AM, Dave wrote: > The problem you will run into is if the antenna SWR changes above the > threshold for both the KPA1500 tuner and HF Auto bothtuners will initiate a > retune and the two will be fighting each other. > > Example - ice, branches against antenna, etc. > > For the bands where you need to use the HF Auto, you are better off leaving > the KPA1500 in bypass. > > Dave wo2x > > Sent from my iPad > >> On Mar 13, 2019, at 12:25 AM, Peter Dougherty wrote: >> >> I think instead I'll go the route of always leaving it in line, but that >> method would certainly work too! Thanks, Paul! >> >> >> >> - pjd >> >> >> >> From: Paul Baldock >> Sent: Tuesday, March 12, 2019 3:36 PM >> To: Peter Dougherty ; 'Reflector Elecraft' >> >> Subject: Re: [Elecraft] KPA-1500 tuner questions >> >> >> >> At 07:49 PM 3/11/2019, Peter Dougherty wrote: >> >> >> >> >> >> The HF-Auto (external automatic tuner) is bypassed everywhere except the >> range of 3650 to 4000, and 7100 to 7300. I would like to automatically have >> the KPA1500's tuner go into bypass at the above ranges, >> >> >> One method (there are others) is to connect a dummy load to the KPA1500, and >> do a TUNE for each bin in those ranges. The tuner will then learn to go into >> BYPASS for those BINS. >> >> - Paul >> >> __ >> 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] KPA-1500 tuner questions
Well that's just it, the SWR is very, very high in the phone portions of both 40 and 80. I can't see any other way to accomplish full automated operation without the second tuner. I am loathe to have two of them together, but I just can't see any other way. I occasionally remote my own station, and even when not, I can't risk another high power/high-SWR error, so on QSY I have no alternative but to pre-tune before keydown. 40m is below 2:1 until around 7090ish, then rises very rapidly above that. It's 8:1 at 7295. 80m is below 2:1 from 3500 to 3700ish, then rises to 10:1 by 4000 (although it's closer to 5.5:1 at 3850, as high as I'll ever go. - pjd -Original Message- The ATU in the KPA1500 alone will achieve the 1.2:1 match with the 2.09 firmware, now in beta. The external tuner is not necessary, unless the antenna SWR is very high. 73, Scott K9MA -- Scott Ellington --- via iPad > On Mar 12, 2019, at 10:24 PM, Peter Dougherty wrote: > > Thanks, Scott! > I'm going to change the way I do things so that ATU is always in, and > the Palstar HF-Auto switches to AUTO mode rather than Manual to keep > the match seen by the KPA below 1.2:1 > > - pjd > > -Original Message- > From: K9MA > Sent: Tuesday, March 12, 2019 1:53 PM > To: Peter Dougherty > Cc: Reflector Elecraft > Subject: Re: [Elecraft] KPA-1500 tuner questions > > Just a general comment on the KPA1500: My experience with it shows > that the SWR has to be below 1.2:1 at the amplifier output (ATU input) > to run reliably at full power. If the SWR is higher than that, the amp > will often fault due to excessive current or drive power before > reaching 1500 W. (And may splatter on SSB.) Elecraft recently updated > the ATU firmware to consistently find a better match, and it really helps. > > 73, > Scott K9MA > > -- > > Scott Ellington > > --- via iPad > >> On Mar 11, 2019, at 8:49 PM, Peter Dougherty wrote: >> >> I have a couple of questions about the KPA1500's internal tuner. >> >> For the most part, I leave the tuner inline. Except for two sub-bands >> (SSB on both 40 and 80m) I am well below 2:1, and maybe 2.5:1 at the >> top end of 160m. The KPA does a good job throughout. >> >> The problems/questions arise when I need to transition between the >> KPA's internal tuner on the bottom ends of both 40 and 80, and the >> external Palstar HF-Auto tuner, which I need to wrangle very high >> SWRs on the phone portions of those bands. Obviously I don't want >> both automatic tuners inline at the same time. The situation is most >> acute on > 40. >> >> The HF-Auto (external automatic tuner) is bypassed everywhere except >> the range of 3650 to 4000, and 7100 to 7300. I would like to >> automatically have the KPA1500's tuner go into bypass at the above >> ranges, just as the Palstar auto-tuner bypasses outside of those >> ranges. Is this somehow possible, or must I manually switch the tuner >> in and out when I cross the appropriate thresholds? >> >> Second question, and I think this relates to the whole "bins" thing, >> which I don't understand, relates to having different tuning >> solutions on the same band segment. This could be handy for me on >> 80m. Unlike on 40, for 80 I have an inverted vee, and it's easy for >> me to drop the ends and change the length of the antenna, so that >> instead of being resonant at 3550 I could make it 3700. I did this >> for the ARRL-SSB contest and it worked pretty well. Is it possible to >> have two different sets of memorized tuning solutions in the >> KPA-1500, in the event I have the vee set for CW (normal) or SSB (for phone contests only)? >> >> >> - >> 73 and Good DX >> Peter, W2IRT >> >> >> >> President, North Jersey DX Association >> >> DXCC Card Checker >> Letter O Manager, ARRL Incoming 2nd District QSL bureau >> >> >> >> __ >> 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] TX Gain Calibration Fails on 6 meters
How are you doing the calibration - manual or computer? If computer, PC or Mac? Make sure you have the latest K3 Utility to do this. Recent versions of the K3 Utility had an issue with handling responses from the K3/K3S that caused calibration to fail. I believe they were fixed on the Windows version, but I don’t think that has been taken care of on the Mac yet. I will have to check to make sure. Repeating the process is worth while. My own experience is that it will eventually complete. 73! Jack, W6FB > On Mar 12, 2019, at 10:04 PM, Frank via Elecraft > wrote: > > I purchased Elecraft K3S S/N 11672 in August 2018. The build was completed > in November 2018. At that time all the tests and calibrations were completed > successfully. > > Now the TX Gain Calibration fails on Low Power and High Power on 50 MHz. > only. > > Page 67 of Elecraft K3S owners manual TXGN Description states LP 0-12W and > HP 13-120W. > > On 160-10 meters I hear the relay switch from LP to HP amplifier when the > power adjustment is increased from 12 to 13W as described. > > On 6 meters the relay switches from LP to HP amplifier when the power is > adjusted from 8 to 9W. > > The error message states “TX Calibration failed because Transmit Power did > not reach the expected value.” > > The TX calibration is performed per the instructions into a proper 50 ohm > dummy load. > > I submitted this to Elecraft Support last week but have not received a > response, so I thought I would ask the group for ideas. > > Thanks in advance. > > Frank > K6FW > __ > 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] PS Comparison: Powerwerz SS-30DV vs. MFJ-4230MVP
Hi Bob, I have a Powerwerx supply, but my model is the SPS-30DM. Variable voltage, useful digital meter displaying voltage and current, and I've had no noise problems with it. It's another $50 above the SS-30DV's price, but I have no doubt noise will not be an issue with the model you listed. With best regards, Pete -- Peter N. Spotts -- NM5PS ARRL Public Information Coordinator, New Mexico Section http://www.nm5ps.net Email: nm...@arrl.net | Skype: pspotts AMSAT #40612 | CalQRP #67 | G-QRP #13202 | NAQCC #2446 | NEQRP #714 Polar Bear #348 | QCWA #34679 | QRP-ARCI #4174 | SKCC #4853S On 3/13/19 11:08 AM, krug261--- via Elecraft wrote: Greetings all, I am in the market for a compact power supply. The fact that Elecraft suggests/sells a third-party unit (SS-30DV) provides an automatic sense of comfort. However, always trying to complicate life I was also looking at the MFJ-4230MVP. Same dimensions, weight, power connections. I do like the variable voltage control on the MFJ. Not sure why I would need it, but seems useful. I doubt if anyone has BOTH units, but even your impressions of either of them would be very helpful. Thanks and 73, Bob KA2TQVKX3 #9842 __ 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] OT WTB 1.8 KHz & WTS 1 KHz filters
Hi, I now need one more 1.8 KHz filter for my K3s Sub Rx. I have one 1 KHz Elecraft/Inrad that is surplus to my needs. If you have a 1.8 Elecraft/Inrad for sale or want to trade for my 1 KHz filter, or if you would like to buy my 1 KHz filter, please contact me off list. Thanks & 73, Gary KA1J __ 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] PS Comparison: Powerwerz SS-30DV vs. MFJ-4230MVP
Could the Powerwerx SS-30DV be the same supply as the Tekpower TP-30SWI minus the meter and a few dollars more? Anyone measure the efficiency of the Powerwerx, AC input vs. DC output power? 73, Mike AC5P On Wednesday, March 13, 2019, 09:03:41 PM CDT, Dennis Moore wrote: I have the Powerwerx, relegated to the closet. One year after I got it the fan became very loud to the point of being obnoxious. Easy enough to replace but unfortunately it isn't available anywhere. BTW, I didn't get this one from Elecraft. Now a nice quiet Astron RS-50M. 73, Dennis NJ6G On 3/13/2019 10:08, krug261--- via Elecraft wrote: > Greetings all, > I am in the market for a compact power supply. The fact that Elecraft > suggests/sells a third-party unit (SS-30DV) provides an automatic sense of > comfort. However, always trying to complicate life I was also looking at the > MFJ-4230MVP. Same dimensions, weight, power connections. I do like the > variable voltage control on the MFJ. Not sure why I would need it, but seems > useful. > I doubt if anyone has BOTH units, but even your impressions of either of them > would be very helpful. > Thanks and 73, Bob KA2TQVKX3 #9842 __ 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] PS Comparison: Powerwerz SS-30DV vs. MFJ-4230MVP
I have the Powerwerx, relegated to the closet. One year after I got it the fan became very loud to the point of being obnoxious. Easy enough to replace but unfortunately it isn't available anywhere. BTW, I didn't get this one from Elecraft. Now a nice quiet Astron RS-50M. 73, Dennis NJ6G On 3/13/2019 10:08, krug261--- via Elecraft wrote: Greetings all, I am in the market for a compact power supply. The fact that Elecraft suggests/sells a third-party unit (SS-30DV) provides an automatic sense of comfort. However, always trying to complicate life I was also looking at the MFJ-4230MVP. Same dimensions, weight, power connections. I do like the variable voltage control on the MFJ. Not sure why I would need it, but seems useful. I doubt if anyone has BOTH units, but even your impressions of either of them would be very helpful. Thanks and 73, Bob KA2TQVKX3 #9842 __ 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] PS Comparison: Powerwerz SS-30DV vs. MFJ-4230MVP
I use Astron SS-30M. This supply has both volt and current meters where as the MFJ has one meter plus a switch. I see no need for an adjustable supply for the station. Set it at 14.0 volts and forget it. I do like to see both voltage and current indicated simultaneously. 73 Bob, K4TAX On 3/13/2019 12:08 PM, krug261--- via Elecraft wrote: Greetings all, I am in the market for a compact power supply. The fact that Elecraft suggests/sells a third-party unit (SS-30DV) provides an automatic sense of comfort. However, always trying to complicate life I was also looking at the MFJ-4230MVP. Same dimensions, weight, power connections. I do like the variable voltage control on the MFJ. Not sure why I would need it, but seems useful. I doubt if anyone has BOTH units, but even your impressions of either of them would be very helpful. Thanks and 73, Bob KA2TQVKX3 #9842 __ 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] TX Gain Calibration Fails on 6 meters
My K3S s/n 10163 I find my results are the same as yours as below. "On 6 meters the relay switches from LP to HP amplifier when the power is adjusted from 8 to 9W." "On 160-10 meters I hear the relay switch from LP to HP amplifier when the power adjustment is increased from 12 to 13W as described." Also noted with TUNE power set to 20 watts, all bands 160M - 10M operate normally at 20 watts displayed and measured. However on 6M when TUNE is activated the displayed power is 16 watts and the measured power is 16 watts. When PWR is set to 20 watts, the measured output is 16 watts. However, If I set the PWR to 100 watts the measured power is 100 watts. On 6M if I set TUNE Pwr to 25 watts, when Tune is activated it displays 21 watts and output is 21 watts. Clearly there seems to be an issue in firmware for 6M only. I recall sending the concern to Elecraft. At the same time, I don't consider it to be a major issue. 73 Bob, K4TAX __ 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] PS Comparison: Powerwerz SS-30DV vs. MFJ-4230MVP
I've had an MFJ-4125 in the closet since I purchased my first K3. Given the experience with that product and it's flaws, I would not trust another MFJ power supply for any reason. It says everything that Elecraft resell the SS-30DV. They have obviously tested and stand behind that unit - that's all the recommendation I need. 73, ... Joe, W4TV On 2019-03-13 1:08 PM, krug261--- via Elecraft wrote: Greetings all, I am in the market for a compact power supply. The fact that Elecraft suggests/sells a third-party unit (SS-30DV) provides an automatic sense of comfort. However, always trying to complicate life I was also looking at the MFJ-4230MVP. Same dimensions, weight, power connections. I do like the variable voltage control on the MFJ. Not sure why I would need it, but seems useful. I doubt if anyone has BOTH units, but even your impressions of either of them would be very helpful. Thanks and 73, Bob KA2TQVKX3 #9842 __ 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] Most helpful
My vote must goes to Don Wilhelm. He has a wealth of knowledge and understanding. Even though I have not experienced many issues with Elecraft hardware I did during my build of the K2, dumb stiff but I could always count on Don for his support. I have had a bit of experience at customer technical field support and I sense Don’s welcomed patience. Thank you Don Wilhelm God Speed Dick AD1G __ 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] PS Comparison: Powerwerz SS-30DV vs. MFJ-4230MVP
Bob, I use an IOTA DLS-55 SMPS power supply ( https://www.iotaengineering.com/dls55.htm). It provides 55 amps, doesn’t produce RFI, is audibly quiet, and rugged. Mine is on 24/7/365. Iota also makes them in other output currents. Ken WA2LBI On Wed, Mar 13, 2019 at 8:57 PM krug261--- via Elecraft < elecraft@mailman.qth.net> wrote: > Greetings all, > > I am in the market for a compact power supply. The fact that Elecraft > suggests/sells a third-party unit (SS-30DV) provides an automatic sense of > comfort. However, always trying to complicate life I was also looking at > the MFJ-4230MVP. Same dimensions, weight, power connections. I do like the > variable voltage control on the MFJ. Not sure why I would need it, but > seems useful. > > I doubt if anyone has BOTH units, but even your impressions of either of > them would be very helpful. > Thanks and 73, Bob KA2TQVKX3 #9842 > > __ 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] PS Comparison: Powerwerz SS-30DV vs. MFJ-4230MVP
Greetings all, I am in the market for a compact power supply. The fact that Elecraft suggests/sells a third-party unit (SS-30DV) provides an automatic sense of comfort. However, always trying to complicate life I was also looking at the MFJ-4230MVP. Same dimensions, weight, power connections. I do like the variable voltage control on the MFJ. Not sure why I would need it, but seems useful. I doubt if anyone has BOTH units, but even your impressions of either of them would be very helpful. Thanks and 73, Bob KA2TQVKX3 #9842 __ 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] Free - almost - to a good home
The almost free transceiver has been sold. From: "Dauer, Edward" Date: Wednesday, March 13, 2019 at 5:24 PM To: "elecraft@mailman.qth.net" Subject: Free - almost - to a good home More stuff as I clean house: a KD1JV triband (30-40-17) QRP transceiver and its more or less matching longwire antenna tuner. I built them, never tested them, have no idea if they work, though they look FB. Hence sold as is. Shipping CONUS via Priority Mail would be about $15. So that’s the price - $15 cash. Please don’t request them unless you will actually use them. No need for them to go unused at my home to unused at some other home. Ted, KN1CBR __ 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] Free - almost - to a good home
More stuff as I clean house: a KD1JV triband (30-40-17) QRP transceiver and its more or less matching longwire antenna tuner. I built them, never tested them, have no idea if they work, though they look FB. Hence sold as is. Shipping CONUS via Priority Mail would be about $15. So that’s the price - $15 cash. Please don’t request them unless you will actually use them. No need for them to go unused at my home to unused at some other home. Ted, KN1CBR __ 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] Pig Knob for sale
The Pig Knob is no longer made by Pignology, I believe, probably because the K-POD eclipsed it for the K3. But it works for the KX3 as well as some non-Elecraft rigs, and I believe that with some cautions it can be adapted to a K2. So mine is either very valuable because they are out of production, or not valuable at all because the K-POD is so much better. Take your pick and make an offer, plus shipping. The original price was $130. Ted, KN1CBR __ 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] Who's your favorite Elecraft Elmer?
As Trustee for the NØSS memorial call sign, I want to thank Don Wilhelm and Russ Boutell for remembering Tom Hammond and his Elecraft legacy, as well as others who still revere his memory. A more unselfishly helpful person never walked this Earth. I will make sure the club knows about Don's kind words for our efforts in maintaining Tom's website material at our monthly meeting tomorrow night. 73, Kent Trimble, K9ZTV Jefferson City, Missouri On 3/13/2019 2:03 PM, Don Wilhelm wrote: I agree that Tom Hammond N0SS (SK) created a valuable website with a lot of information related to Elecraft products (particularly the K1 and K2) and ham radio in general. I am thankful that the Mid-Misouri Amateur Radio Club chose to preserve the contents of his website within their website structure. I use it frequently (have it bookmarked) even though I have copied many of the documents on my home fileserver. If you have not reviewed Tom's website information to see what is there, I invite you to do so, it can be valuable. 73, Don W3FPR On 3/13/2019 2:48 PM, rboutell wrote: I agree that Don W3FPR has been an incredible elmer here for many years. I just wanted to also commend Tom Hammond N0SS (SK) for many earlier years of beta testing, helpful tips, and answering questions on the reflector. Here is a link to his preserved website. The soldering tutorial is invaluable. http://www.mmccs.com/mmarc/n0ss/ 73, Russ W9RB __ 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 --- This email has been checked for viruses by AVG. https://www.avg.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
Re: [Elecraft] Who's your favorite Elecraft Elmer?
I agree that Tom Hammond N0SS (SK) created a valuable website with a lot of information related to Elecraft products (particularly the K1 and K2) and ham radio in general. I am thankful that the Mid-Misouri Amateur Radio Club chose to preserve the contents of his website within their website structure. I use it frequently (have it bookmarked) even though I have copied many of the documents on my home fileserver. If you have not reviewed Tom's website information to see what is there, I invite you to do so, it can be valuable. 73, Don W3FPR On 3/13/2019 2:48 PM, rboutell wrote: I agree that Don W3FPR has been an incredible elmer here for many years. I just wanted to also commend Tom Hammond N0SS (SK) for many earlier years of beta testing, helpful tips, and answering questions on the reflector. Here is a link to his preserved website. The soldering tutorial is invaluable. http://www.mmccs.com/mmarc/n0ss/ 73, Russ W9RB __ 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] Who's your favorite Elecraft Elmer?
I totally agree, Don W3FPR is awesome. His knowledge of Elecraft equipment is superb. Spence W7CSW On Wed, Mar 13, 2019, 11:49 AM rboutell wrote: > I agree that Don W3FPR has been an incredible elmer here for many years. I > just wanted to also commend Tom Hammond N0SS (SK) for many earlier years of > beta testing, helpful tips, and answering questions on the reflector. Here > is a link to his preserved website. The soldering tutorial is invaluable. > http://www.mmccs.com/mmarc/n0ss/ > 73, Russ W9RB > > > > - > 73, Russ - W9RB > -- > 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 > __ 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] Who's your favorite Elecraft Elmer?
I agree that Don W3FPR has been an incredible elmer here for many years. I just wanted to also commend Tom Hammond N0SS (SK) for many earlier years of beta testing, helpful tips, and answering questions on the reflector. Here is a link to his preserved website. The soldering tutorial is invaluable. http://www.mmccs.com/mmarc/n0ss/ 73, Russ W9RB - 73, Russ - W9RB -- 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
[Elecraft] SOLD OT: For Sale, Midnight Design Solutions Scalar Network Analyzer
The SNA with optional DDS60 Sig Gen card has been sold. Thanks to all who inquired. W0EB __ 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] Elecraft K* POD
Henning, There is no need to *program* the K-Pod itself. You do write Macros for the K3 (use K3 Utility to enter them) see the K3 Programmer's Reference for Macro command structure. Then the K-Pod buttons can initiate up to 16 K3 Macros - a tap initiates macros 9 through 16 while a hold initiates macros 1 through 8. For instance, one Macro can be used to turn on SPLIT, then set VFO B to the same frequency and mode as VFO A and move VFO B up 1kHz. Another Macro can turn on RIT, while another can turn on XIT. Think about how you operate the K3 and create macros to automate that process. The knob on the K-Pod will move VFO A or VFO B depending on which switch position you have set. The 3rd position can change the RIT or XIT offset. Late K3s and the K3S are K-Pod ready, but remove the front bottom panel of your K3 and check the resistor. See the K-Pod instructions. 73, Don W3FPR On 3/13/2019 10:49 AM, Henning Hess wrote: I have a question concerning K*POD. I want to use this item together with the K3 My efforts in programming this item were not successful. I got the Elecraft K*Pod some days ago and I tried to "program" it. I was not able to see a good result. Normally I am working DX in CW. __ 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] KPA-1500 tuner questions
The issue with the internal tuner in Peter’s case is SWR will be high enough to cause necessary power reduction. (Max power will be reduced. ) The HF Auto allows for slightly higher power at same SWR presented to tuner. Dave wo2x Sent from my waxed string and tin cans. > On Mar 13, 2019, at 11:02 AM, K9MA wrote: > > The ATU in the KPA1500 alone will achieve the 1.2:1 match with the 2.09 > firmware, now in beta. The external tuner is not necessary, unless the > antenna SWR is very high. > > 73, > Scott K9MA > > -- > > Scott Ellington > > --- via iPad > >> On Mar 12, 2019, at 10:24 PM, Peter Dougherty wrote: >> >> Thanks, Scott! >> I'm going to change the way I do things so that ATU is always in, and the >> Palstar HF-Auto switches to AUTO mode rather than Manual to keep the match >> seen by the KPA below 1.2:1 >> >> - pjd >> >> -Original Message- >> From: K9MA >> Sent: Tuesday, March 12, 2019 1:53 PM >> To: Peter Dougherty >> Cc: Reflector Elecraft >> Subject: Re: [Elecraft] KPA-1500 tuner questions >> >> Just a general comment on the KPA1500: My experience with it shows that the >> SWR has to be below 1.2:1 at the amplifier output (ATU input) to run >> reliably at full power. If the SWR is higher than that, the amp will often >> fault due to excessive current or drive power before reaching 1500 W. (And >> may splatter on SSB.) Elecraft recently updated the ATU firmware to >> consistently find a better match, and it really helps. >> >> 73, >> Scott K9MA >> >> -- >> >> Scott Ellington >> >> --- via iPad >> >>> On Mar 11, 2019, at 8:49 PM, Peter Dougherty wrote: >>> >>> I have a couple of questions about the KPA1500's internal tuner. >>> >>> For the most part, I leave the tuner inline. Except for two sub-bands >>> (SSB on both 40 and 80m) I am well below 2:1, and maybe 2.5:1 at the >>> top end of 160m. The KPA does a good job throughout. >>> >>> The problems/questions arise when I need to transition between the >>> KPA's internal tuner on the bottom ends of both 40 and 80, and the >>> external Palstar HF-Auto tuner, which I need to wrangle very high SWRs >>> on the phone portions of those bands. Obviously I don't want both >>> automatic tuners inline at the same time. The situation is most acute on >> 40. >>> >>> The HF-Auto (external automatic tuner) is bypassed everywhere except >>> the range of 3650 to 4000, and 7100 to 7300. I would like to >>> automatically have the KPA1500's tuner go into bypass at the above >>> ranges, just as the Palstar auto-tuner bypasses outside of those >>> ranges. Is this somehow possible, or must I manually switch the tuner >>> in and out when I cross the appropriate thresholds? >>> >>> Second question, and I think this relates to the whole "bins" thing, >>> which I don't understand, relates to having different tuning solutions >>> on the same band segment. This could be handy for me on 80m. Unlike on >>> 40, for 80 I have an inverted vee, and it's easy for me to drop the >>> ends and change the length of the antenna, so that instead of being >>> resonant at 3550 I could make it 3700. I did this for the ARRL-SSB >>> contest and it worked pretty well. Is it possible to have two >>> different sets of memorized tuning solutions in the KPA-1500, in the >>> event I have the vee set for CW (normal) or SSB (for phone contests only)? >>> >>> >>> - >>> 73 and Good DX >>> Peter, W2IRT >>> >>> >>> >>> President, North Jersey DX Association >>> >>> DXCC Card Checker >>> Letter O Manager, ARRL Incoming 2nd District QSL bureau >>> >>> >>> >>> __ >>> 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] KPA-1500 tuner questions
The ATU in the KPA1500 alone will achieve the 1.2:1 match with the 2.09 firmware, now in beta. The external tuner is not necessary, unless the antenna SWR is very high. 73, Scott K9MA -- Scott Ellington --- via iPad > On Mar 12, 2019, at 10:24 PM, Peter Dougherty wrote: > > Thanks, Scott! > I'm going to change the way I do things so that ATU is always in, and the > Palstar HF-Auto switches to AUTO mode rather than Manual to keep the match > seen by the KPA below 1.2:1 > > - pjd > > -Original Message- > From: K9MA > Sent: Tuesday, March 12, 2019 1:53 PM > To: Peter Dougherty > Cc: Reflector Elecraft > Subject: Re: [Elecraft] KPA-1500 tuner questions > > Just a general comment on the KPA1500: My experience with it shows that the > SWR has to be below 1.2:1 at the amplifier output (ATU input) to run > reliably at full power. If the SWR is higher than that, the amp will often > fault due to excessive current or drive power before reaching 1500 W. (And > may splatter on SSB.) Elecraft recently updated the ATU firmware to > consistently find a better match, and it really helps. > > 73, > Scott K9MA > > -- > > Scott Ellington > > --- via iPad > >> On Mar 11, 2019, at 8:49 PM, Peter Dougherty wrote: >> >> I have a couple of questions about the KPA1500's internal tuner. >> >> For the most part, I leave the tuner inline. Except for two sub-bands >> (SSB on both 40 and 80m) I am well below 2:1, and maybe 2.5:1 at the >> top end of 160m. The KPA does a good job throughout. >> >> The problems/questions arise when I need to transition between the >> KPA's internal tuner on the bottom ends of both 40 and 80, and the >> external Palstar HF-Auto tuner, which I need to wrangle very high SWRs >> on the phone portions of those bands. Obviously I don't want both >> automatic tuners inline at the same time. The situation is most acute on > 40. >> >> The HF-Auto (external automatic tuner) is bypassed everywhere except >> the range of 3650 to 4000, and 7100 to 7300. I would like to >> automatically have the KPA1500's tuner go into bypass at the above >> ranges, just as the Palstar auto-tuner bypasses outside of those >> ranges. Is this somehow possible, or must I manually switch the tuner >> in and out when I cross the appropriate thresholds? >> >> Second question, and I think this relates to the whole "bins" thing, >> which I don't understand, relates to having different tuning solutions >> on the same band segment. This could be handy for me on 80m. Unlike on >> 40, for 80 I have an inverted vee, and it's easy for me to drop the >> ends and change the length of the antenna, so that instead of being >> resonant at 3550 I could make it 3700. I did this for the ARRL-SSB >> contest and it worked pretty well. Is it possible to have two >> different sets of memorized tuning solutions in the KPA-1500, in the >> event I have the vee set for CW (normal) or SSB (for phone contests only)? >> >> >> - >> 73 and Good DX >> Peter, W2IRT >> >> >> >> President, North Jersey DX Association >> >> DXCC Card Checker >> Letter O Manager, ARRL Incoming 2nd District QSL bureau >> >> >> >> __ >> 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] Elecraft K* POD
I have a question concerning K*POD. I want to use this item together with the K3 My efforts in programming this item were not successful. I got the Elecraft K*Pod some days ago and I tried to "program" it. I was not able to see a good result. Normally I am working DX in CW. You are more successful in the pile-up when you manage to find the station which made the contact. Do you have a hint or suggestion how to program the K*Pod and the K3 for this effort. This means: VFO "A" permanently on the frequency of the DX station. Searching with VFO "B" for the successful station in the pile-up. Going with the K3 to this frequency. Transmitting (Successful) Yes Going back again to this QRG . Send report 599 TU I hope I could describe my problem understandable and you are able to give me a tip how to program and solve this. Thank you very much in advance. 73 de Henning ( DJ7HH) __ 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] KPA-1500 tuner questions
At 03:01 AM 3/13/2019, you wrote: The problem you will run into is if the antenna SWR changes above the threshold for both the KPA1500 tuner and HF Auto bothtuners will initiate a retune and the two will be fighting each other. I suggest you set KPA1500 "ATU HISWR RETUNE" to "OFF". The last thing you want is for the ATU to start tuning when you don't expect it, such as when you choose the wrong antenna by mistake. - Paul __ 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] OT: For Sale, Midnight Design Solutions Scalar Network Analyzer
Surplus to my needs (I now have a new Spectrum Analyzer and a SARK-110) is a really nice fully built and working Scalar Network Analyzer from Midnight Design Solutions ( http://midnightdesignsolutions.com/sna/ ) with the optional digital signal generator. Total cost originally for the SNA and the optional Sig Gen was $120 plus shipping. This unit was personally constructed by me and is in excellent operating condition with the latest (Version 5.0) software installed. I'd like to get $100 shipped for this - anywhere in the USA & posessions only. PayPal preferred. Interested? Please contact me off the reflector for further information or to say "I'll take it". First "I'll take it" gets right of first refusal (by date/time on the incoming email). Jim Sheldon, W0EB Park City, KS __ 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] K3S noise blanker: FMOP OTHR
Richard, You may have better luck with Noise Reduction than the Noise Blanker. The noise blanker works best on impulse type noise. 73, Don W3FPR On 3/13/2019 10:00 AM, Richard Lamont wrote: Hi all, Has anyone had any success using the K3S noise blanker to get rid of the new-ish FM-on-pulse types of over-the-horizon radar? I've tried various settings but nothing seems to make any discernable difference. There seem to be two main systems, both Russian: 'Sunflower', a surface-wave OTHR, which typically occupies about 40 kHz of bandwidth on the lower HF bands and puts out 43 pulses/sec and has been causing a lot of interference on 3.5 and 5 MHz. 'Container', an ionospheric OTHR, which (at present) occupies about 14 kHz of bandwidth, mainly on 14 MHz and puts out 40 pulses/sec and has spent the last few days centred on 14142, 14228 and 14332 kHz. 73, Richard G4DYA __ 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] K3S noise blanker: FMOP OTHR
Hi all, Has anyone had any success using the K3S noise blanker to get rid of the new-ish FM-on-pulse types of over-the-horizon radar? I've tried various settings but nothing seems to make any discernable difference. There seem to be two main systems, both Russian: 'Sunflower', a surface-wave OTHR, which typically occupies about 40 kHz of bandwidth on the lower HF bands and puts out 43 pulses/sec and has been causing a lot of interference on 3.5 and 5 MHz. 'Container', an ionospheric OTHR, which (at present) occupies about 14 kHz of bandwidth, mainly on 14 MHz and puts out 40 pulses/sec and has spent the last few days centred on 14142, 14228 and 14332 kHz. 73, Richard G4DYA __ 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] K* POD
Yes, this is the place... Shoot the question... 73 de IW2NOY Inviato da BlueMail Il giorno 13 mar 2019 11:51, alle ore 11:51, Henning Hess ha scritto: >Hallo, OMs > >How can I publish my questions at the right place? > >73 de Henning (DJ7HH) > > > > > >__ >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] K* POD
Hi Henning, This is a good place to ask. There are many knowledgeable folks here. -- Mike Flowers, K6MKF, NCDXC - "It's about DX!" > On Mar 13, 2019, at 3:50 AM, Henning Hess wrote: > > Hallo, OMs > > How can I publish my questions at the right place? > > 73 de Henning (DJ7HH) > > __ > 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] KPA-1500 tuner questions
Personally I'd try to correct the antenna issue so the tuner in the KPA1500 performs as designed. The antenna should be able, with the KPA1500 tuner, to cover then entire 75/80M band. Although I use the KAT500, same equivalent circuit, I have no issue with full band coverage on 75/80M. As to the Palstar, I'd take Jim's advice, and find it a new home. Two automatic tuners in line is a formula for disaster as I view it. If you wish to use the Palstar all of the time, then set the one in the KPA1500 to bypass all of the time. 73 Bob, K4TAX On 3/13/2019 5:01 AM, Dave wrote: The problem you will run into is if the antenna SWR changes above the threshold for both the KPA1500 tuner and HF Auto bothtuners will initiate a retune and the two will be fighting each other. Example - ice, branches against antenna, etc. For the bands where you need to use the HF Auto, you are better off leaving the KPA1500 in bypass. Dave wo2x Sent from my iPad On Mar 13, 2019, at 12:25 AM, Peter Dougherty wrote: I think instead I'll go the route of always leaving it in line, but that method would certainly work too! Thanks, Paul! - pjd From: Paul Baldock Sent: Tuesday, March 12, 2019 3:36 PM To: Peter Dougherty ; 'Reflector Elecraft' Subject: Re: [Elecraft] KPA-1500 tuner questions At 07:49 PM 3/11/2019, Peter Dougherty wrote: The HF-Auto (external automatic tuner) is bypassed everywhere except the range of 3650 to 4000, and 7100 to 7300. I would like to automatically have the KPA1500's tuner go into bypass at the above ranges, One method (there are others) is to connect a dummy load to the KPA1500, and do a TUNE for each bin in those ranges. The tuner will then learn to go into BYPASS for those BINS. - Paul __ 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] K* POD
Henning, This is the place. Wes N7WS On 3/13/2019 3:50 AM, Henning Hess wrote: Hallo, OMs How can I publish my questions at the right place? 73 de Henning (DJ7HH) __ 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] K* POD
Hallo, OMs How can I publish my questions at the right place? 73 de Henning (DJ7HH) __ 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] KPA-1500 tuner questions
The problem you will run into is if the antenna SWR changes above the threshold for both the KPA1500 tuner and HF Auto bothtuners will initiate a retune and the two will be fighting each other. Example - ice, branches against antenna, etc. For the bands where you need to use the HF Auto, you are better off leaving the KPA1500 in bypass. Dave wo2x Sent from my iPad > On Mar 13, 2019, at 12:25 AM, Peter Dougherty wrote: > > I think instead I'll go the route of always leaving it in line, but that > method would certainly work too! Thanks, Paul! > > > > - pjd > > > > From: Paul Baldock > Sent: Tuesday, March 12, 2019 3:36 PM > To: Peter Dougherty ; 'Reflector Elecraft' > > Subject: Re: [Elecraft] KPA-1500 tuner questions > > > > At 07:49 PM 3/11/2019, Peter Dougherty wrote: > > > > > > The HF-Auto (external automatic tuner) is bypassed everywhere except the > range of 3650 to 4000, and 7100 to 7300. I would like to automatically have > the KPA1500's tuner go into bypass at the above ranges, > > > One method (there are others) is to connect a dummy load to the KPA1500, and > do a TUNE for each bin in those ranges. The tuner will then learn to go into > BYPASS for those BINS. > > - Paul > > __ > 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] KPA-1500 tuner questions
Hi Peter, It's probably a bad idea to have to antenna tuners in series. Each tuner adds loss, and the one in the KPA1500 is integrated with the amplifier. No question, one should by bypassed, and I'd be inclined to remove the Palstar from the signal path -- that is, connect switched antennas directly to the KPA1500 and find a new home for the Palstar. Why? Well, several years ago when I stopped by their booth in Dayton and looked inside the box, I saw really bad engineering -- the circuitry relied on chassis return for switching. I asked to talk to the engineer for the product, and the guy in the booth said he was. When I pointed out the problem, he didn't understand why it was a problem! This is engineering 101! BTW -- the otherwise very good Ten Tec tuners are built that way too. Trying to make a TDR sweep through them is impossible, and trying to get 6M through it would be a train wreck, and the Palstar that I looked would be as bad! 73, Jim K9YC On 3/12/2019 9:24 PM, Peter Dougherty wrote: Palstar HF-Auto switches to AUTO mode rather than Manual to keep the match seen by the KPA below 1.2:1 __ 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
