Re: [Elecraft] Working Split with a Sub RX
I've tried it both ways personally, and I guess through 18 years of hardcore DXing I got used to the DX on VFO-A and the pileup on VFO-B. But the argument could certainly be made for the opposite way. I'd wager that's how Dxpeditions operate, transmitting on VFO-B and scanning the pileup on VFO-A. The Left-Mix-Right menu option is great, since it allows you to easily do whichever mode seems right for your style of operating. - pjd -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of William Levy Sent: Monday, March 11, 2019 8:41 PM To: Elecraft Subject: [Elecraft] Working Split with a Sub RX I have always thought the K3 did it backwards. Before the K3 I had a transceiver and a seperate RX above it. The Receiver listened to the DX station and the Transceiver would tune to find who was working him at the moment. Then the pounce! So with the K3 I don't use the SPLIT button. I use the Sub on the DX station and I lock it and then I use the transceiver knob to find the guys working split. If you have a P3 attached you can see it and the P3 will put you there instantaneously. I think that's a better way to work split. Would love to hear from those that agree or disagree. Sincerely Bill N2WL __ 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] Working Split with a Sub RX
Exactly what I have been doing for many years now and can’t see why I would do it any other way. I switched my audio to my headphones to B-A instead of A-B to keep the DX station in my left ear and finding where the last station who worked him was located with my right ear. Ken, NU4I Sent from my iPod > On Mar 11, 2019, at 20:40, William Levy wrote: > > I have always thought the K3 did it backwards. > Before the K3 I had a transceiver and a seperate RX above it. > The Receiver listened to the DX station and the Transceiver would tune to > find who was working him at the moment. Then the pounce! > So with the K3 I don't use the SPLIT button. I use the Sub on the DX > station and I lock it and then I use the transceiver knob to find the guys > working split. If you have a P3 attached you can see it and the P3 will put > you there instantaneously. > > I think that's a better way to work split. Would love to hear from those > that agree or disagree. > > Sincerely Bill N2WL > __ > 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] KPA-1500 tuner questions
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
Re: [Elecraft] 80m KPA1500 High reflected power problems **SOLVED!**
This summer I intend to get an entry panel from KF7P, along with a ton of arrestors inside for everything. The real difficult part will be getting all the cables that now enter the house at base of the tower and across the crawl space to instead run under the deck. I'm to tall, too fat, and too creaky to slither under there over rocks and gravel to run a half-dozen or more cables. I should consider hiring someone to attach some 4" conduit with sweeps under there. It would make the problem go away quickly. - pjd -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of Dave Sent: Monday, March 11, 2019 8:52 PM Cc: Reflector Elecraft Subject: Re: [Elecraft] 80m KPA1500 High reflected power problems **SOLVED!** Pete, I had a similar problemon lower end of 80 meters. Fix for me was to ground outer jacket of all antenna cables where they enter the house. This eliminated common mode current coming into the shack on a second coax. Check your RX antenna cable, which does not go through the RCS-12. Dave wo2x Sent from my iPad > On Mar 11, 2019, at 6:13 PM, Jim Brown wrote: > >> On 3/11/2019 1:40 PM, Peter Dougherty wrote: >> I've got my bonding about as good as I can get it for the moment, >> although I'm probably going to do some improvements this year. The >> lightning arrestors are built in to the RCS-12 antenna switchbox >> (RCS-12L with the gas discharge tubes), and everything's bonded at the base of the tower. > The function of GDTs is to offer some protection of equipment in the event of a strike. To do that, they must be close to the equipment, not at the tower. Lightning can induce a lot of current on the coax between the tower and the shack. I suggest that you add arrestors (including that vertical you use for RX) where all of your coax enters the shack, bond them to your rod(s), and to the shack bonding. That's probably the missing bonding that I suspected! Also, what about bonding to the power entry panel? >> There's >> a single feedline coming inside from that tower-mounted switchbox. >> Each piece of radio gear and the computer inside is bonded by 1" >> braid going to a copper bus. LAN and voice line comms are not, >> however the connection from the pole is fiber, not copper so that's not likely a problem. > Agreed. >> The copper bus >> inside is bonded to a ground rod outside the shack, which in turn is >> bonded to the tower ground system. >> >> The deficiency is that the copper bus is not grounded to the same >> point as the tower, since the tower is about 50 feet away from the shack. > This distance is borderline for bonding to the house. >> I guess I >> could run a 50 or 60' run of 2" strapping from the desk, through the >> floor, across the crawlspace, and out the conduit to the tower, but I >> suspect that might be more a hindrance than a help, quite honestly. > > Agreed. > > My shack is in what used to be a "mother-in-law" apartment of a detached garage. I have a rod where power enters that building (fed from the house), a half-perimeter #6 running around the building to the shack, where there are five driven rods, all exposed to rainfall, and three rods along that perimeter ground. The coax entry panels (added a second one when the first filled up) on the wall of the shack are bonded down to the rods and up to the ground bus for the equipment. They're also bonded to steel conduit that runs back to the entry panel. > > 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 __ 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] KPA1500 - FAULT:LPF VMON
According to the fault table, LPF VMON is "incorrect bias voltages at the TR switch". I suggest you call or e-mail Elecraft Support with your concerns. 73 Bob, K4TAX On 3/11/2019 7:55 PM, Hisashi T Fujinaka wrote: What does this mean? Other than that I can't transmit on FT8 right now? :) I'm running KPA1500 MCU revision 02.09. __ 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] KPA1500 - FAULT:LPF VMON
Hi Hisashi, This usually means there is a fault with one of the control voltages in the amplifier. I will follow up with you off list via direct email about diagnosing this further. 73, Eric elecraft.com _..._ > On Mar 11, 2019, at 5:55 PM, Hisashi T Fujinaka wrote: > > What does this mean? > > Other than that I can't transmit on FT8 right now? :) > > I'm running KPA1500 MCU revision 02.09. > > -- > Hisashi T Fujinaka - ht...@twofifty.com K7EMI > BSEE + BSChem + BAEnglish + MSCS + $2.50 = coffee > __ > 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] ELECRAFT K2. Installing KBT2 with KIO2 in place
Brian, No problem with the KAT2 installed. Ty-wrap the speaker cable to the KAT2 cable, but do not put any ty-wraps at the end of the battery. If the speaker wire has ty-wraps that fall at the end of the battery, cut them off. 73, Don W3FPR On 3/11/2019 9:00 PM, Brian Denley wrote: I should also mention that the KAT2 is in the cover as well. Brian KB1VBF Sent from my iPad On Mar 11, 2019, at 7:33 PM, Brian Denley wrote: Is the KBT2 going to fit ok with the KIO2 in the cover as well? It seems like the battery is pinching the KIO2 coax cable pretty well. __ 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 K2. Installing KBT2 with KIO2 in place
I should also mention that the KAT2 is in the cover as well. Brian KB1VBF Sent from my iPad > On Mar 11, 2019, at 7:33 PM, Brian Denley wrote: > > Is the KBT2 going to fit ok with the KIO2 in the cover as well? It seems > like the battery is pinching the KIO2 coax cable pretty well. > > Anyone else have both? > > Thanks > > Brian > KB1VBF > Sent from my iPad __ 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] KPA1500 - FAULT:LPF VMON
What does this mean? Other than that I can't transmit on FT8 right now? :) I'm running KPA1500 MCU revision 02.09. -- Hisashi T Fujinaka - ht...@twofifty.com K7EMI BSEE + BSChem + BAEnglish + MSCS + $2.50 = coffee __ 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] 80m KPA1500 High reflected power problems **SOLVED!**
Pete, I had a similar problemon lower end of 80 meters. Fix for me was to ground outer jacket of all antenna cables where they enter the house. This eliminated common mode current coming into the shack on a second coax. Check your RX antenna cable, which does not go through the RCS-12. Dave wo2x Sent from my iPad > On Mar 11, 2019, at 6:13 PM, Jim Brown wrote: > >> On 3/11/2019 1:40 PM, Peter Dougherty wrote: >> I've got my bonding about as good as I can get it for the moment, although >> I'm probably going to do some improvements this year. The lightning >> arrestors are built in to the RCS-12 antenna switchbox (RCS-12L with the gas >> discharge tubes), and everything's bonded at the base of the tower. > The function of GDTs is to offer some protection of equipment in the event of > a strike. To do that, they must be close to the equipment, not at the tower. > Lightning can induce a lot of current on the coax between the tower and the > shack. I suggest that you add arrestors (including that vertical you use for > RX) where all of your coax enters the shack, bond them to your rod(s), and to > the shack bonding. That's probably the missing bonding that I suspected! > Also, what about bonding to the power entry panel? >> There's >> a single feedline coming inside from that tower-mounted switchbox. Each >> piece of radio gear and the computer inside is bonded by 1" braid going to a >> copper bus. LAN and voice line comms are not, however the connection from >> the pole is fiber, not copper so that's not likely a problem. > Agreed. >> The copper bus >> inside is bonded to a ground rod outside the shack, which in turn is bonded >> to the tower ground system. >> >> The deficiency is that the copper bus is not grounded to the same point as >> the tower, since the tower is about 50 feet away from the shack. > This distance is borderline for bonding to the house. >> I guess I >> could run a 50 or 60' run of 2" strapping from the desk, through the floor, >> across the crawlspace, and out the conduit to the tower, but I suspect that >> might be more a hindrance than a help, quite honestly. > > Agreed. > > My shack is in what used to be a "mother-in-law" apartment of a detached > garage. I have a rod where power enters that building (fed from the house), a > half-perimeter #6 running around the building to the shack, where there are > five driven rods, all exposed to rainfall, and three rods along that > perimeter ground. The coax entry panels (added a second one when the first > filled up) on the wall of the shack are bonded down to the rods and up to the > ground bus for the equipment. They're also bonded to steel conduit that runs > back to the entry panel. > > 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 __ 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] Working Split with a Sub RX
I have always thought the K3 did it backwards. Before the K3 I had a transceiver and a seperate RX above it. The Receiver listened to the DX station and the Transceiver would tune to find who was working him at the moment. Then the pounce! So with the K3 I don't use the SPLIT button. I use the Sub on the DX station and I lock it and then I use the transceiver knob to find the guys working split. If you have a P3 attached you can see it and the P3 will put you there instantaneously. I think that's a better way to work split. Would love to hear from those that agree or disagree. Sincerely Bill N2WL __ 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 K2. Installing KBT2 with KIO2 in place
Brian, I have both in my K2. Ty-wrap the battery wires and the KIO2 cable together, but do not put any ty-wraps at the ends of the battery. I also have the KAT2. In a similar manner, ty-wrap the speaker wiring to the KAT2 cable, but not at the ends of the battery. 73, Don W3FPR On 3/11/2019 7:33 PM, Brian Denley wrote: Is the KBT2 going to fit ok with the KIO2 in the cover as well? It seems like the battery is pinching the KIO2 coax cable pretty well. __ 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 K2. Installing KBT2 with KIO2 in place
I have both in my K2 with no problem. Well, I did until I removed the battery and its holder; too heavy and too old technology. I also have a digital card I got from Pauli, EA3BLQ (SK) that fits in as well. The KIO2 hangs on its plug, but stays in place. 73 Jay K3BH On Mon, Mar 11, 2019, at 19:33, Brian Denley wrote: > Is the KBT2 going to fit ok with the KIO2 in the cover as well? It > seems like the battery is pinching the KIO2 coax cable pretty well. > > Anyone else have both? > > Thanks > > Brian > KB1VBF > Sent from my iPad > __ > 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 K2. Installing KBT2 with KIO2 in place
Is the KBT2 going to fit ok with the KIO2 in the cover as well? It seems like the battery is pinching the KIO2 coax cable pretty well. Anyone else have both? Thanks Brian KB1VBF Sent from my iPad __ 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] 1500 W is a lot of power
that would be the ARRL handbook,,, it was for me Bob K3DJC On Mon, 11 Mar 2019 20:07:54 + (UTC) Al Lorona writes: > About two months ago I posted that amateur radio needs a tutorial, > 'What to expect when you get an amplifier'. As we see again and > again here even basic things like cables, connectors, grounding, and > house wiring that work fine at 100 W may be inadequate for 1500 W. > We need guidance to study our stations piece by piece to ensure > those pieces can handle these power levels without failing or > causing problems. > > Al W6LX > __ > 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] 1500 W is a lot of power
Put a ceramic .1 uF across the connector on the door opener where the wire to the button by the kitchen door comes from. Chuck Hawley c-haw...@illinois.edu Amateur Radio, KE9UW aka Jack, BMW Motorcycles From: elecraft-boun...@mailman.qth.net on behalf of Robert Sands Sent: Monday, March 11, 2019 4:32 PM To: Bob McGraw K4TAX Cc: Elecraft Discussion List Subject: Re: [Elecraft] 1500 W is a lot of power my garage door opens with only 500 watts. fun reminder about RF capture. On Mon, Mar 11, 2019, 2:20 PM Bob McGraw K4TAX wrote: > Three things: > > (a) ARRL Handbook - contains everything you need to know and then some. > > (b) ARRL Antenna book - contains everything you need to know and then > some. > > (c) Grounding and Bonding, by Ward Silver, an ARRL Publication - > MANDATORY reading. > > And of course one must visit the contents of these books frequently > along with each manual that came with the product. RTFM > > 73 > > Bob, K4TAX > > > On 3/11/2019 3:07 PM, Al Lorona wrote: > > About two months ago I posted that amateur radio needs a tutorial, 'What > to expect when you get an amplifier'. As we see again and again here even > basic things like cables, connectors, grounding, and house wiring that work > fine at 100 W may be inadequate for 1500 W. We need guidance to study our > stations piece by piece to ensure those pieces can handle these power > levels without failing or causing problems. > > > > Al W6LX > > __ > > 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] 80m KPA1500 High reflected power problems **SOLVED!**
On 3/11/2019 1:40 PM, Peter Dougherty wrote: I've got my bonding about as good as I can get it for the moment, although I'm probably going to do some improvements this year. The lightning arrestors are built in to the RCS-12 antenna switchbox (RCS-12L with the gas discharge tubes), and everything's bonded at the base of the tower. The function of GDTs is to offer some protection of equipment in the event of a strike. To do that, they must be close to the equipment, not at the tower. Lightning can induce a lot of current on the coax between the tower and the shack. I suggest that you add arrestors (including that vertical you use for RX) where all of your coax enters the shack, bond them to your rod(s), and to the shack bonding. That's probably the missing bonding that I suspected! Also, what about bonding to the power entry panel? There's a single feedline coming inside from that tower-mounted switchbox. Each piece of radio gear and the computer inside is bonded by 1" braid going to a copper bus. LAN and voice line comms are not, however the connection from the pole is fiber, not copper so that's not likely a problem. Agreed. The copper bus inside is bonded to a ground rod outside the shack, which in turn is bonded to the tower ground system. The deficiency is that the copper bus is not grounded to the same point as the tower, since the tower is about 50 feet away from the shack. This distance is borderline for bonding to the house. I guess I could run a 50 or 60' run of 2" strapping from the desk, through the floor, across the crawlspace, and out the conduit to the tower, but I suspect that might be more a hindrance than a help, quite honestly. Agreed. My shack is in what used to be a "mother-in-law" apartment of a detached garage. I have a rod where power enters that building (fed from the house), a half-perimeter #6 running around the building to the shack, where there are five driven rods, all exposed to rainfall, and three rods along that perimeter ground. The coax entry panels (added a second one when the first filled up) on the wall of the shack are bonded down to the rods and up to the ground bus for the equipment. They're also bonded to steel conduit that runs back to the entry panel. 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] 1500 W is a lot of power
The Internet, HTML, Email, and Google have made finding answers much easier. Unfortunately, for every increment of increase in use of these sources, there has been a corresponding decrease in trips to the bookshelf. There has also been a corresponding decrease in the ICFTO Coefficient ["I Can Figure This Out"] and some posts for help are beginning to approximate, "My KPA500 quit. What's wrong?" A side benefit of the books, at least for me, is that I inevitably run across something I didn't know while researching what I walked to the bookshelf for in the first place. 73, Fred ["Skip"] K6DGW Sparks NV DM09dn Washoe County On 3/11/2019 2:19 PM, Bob McGraw K4TAX wrote: Three things: (a) ARRL Handbook - contains everything you need to know and then some. (b) ARRL Antenna book - contains everything you need to know and then some. (c) Grounding and Bonding, by Ward Silver, an ARRL Publication - MANDATORY reading. And of course one must visit the contents of these books frequently along with each manual that came with the product. RTFM 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] 1500 W is a lot of power
my garage door opens with only 500 watts. fun reminder about RF capture. On Mon, Mar 11, 2019, 2:20 PM Bob McGraw K4TAX wrote: > Three things: > > (a) ARRL Handbook - contains everything you need to know and then some. > > (b) ARRL Antenna book - contains everything you need to know and then > some. > > (c) Grounding and Bonding, by Ward Silver, an ARRL Publication - > MANDATORY reading. > > And of course one must visit the contents of these books frequently > along with each manual that came with the product. RTFM > > 73 > > Bob, K4TAX > > > On 3/11/2019 3:07 PM, Al Lorona wrote: > > About two months ago I posted that amateur radio needs a tutorial, 'What > to expect when you get an amplifier'. As we see again and again here even > basic things like cables, connectors, grounding, and house wiring that work > fine at 100 W may be inadequate for 1500 W. We need guidance to study our > stations piece by piece to ensure those pieces can handle these power > levels without failing or causing problems. > > > > Al W6LX > > __ > > 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] 1500 W is a lot of power
Three things: (a) ARRL Handbook - contains everything you need to know and then some. (b) ARRL Antenna book - contains everything you need to know and then some. (c) Grounding and Bonding, by Ward Silver, an ARRL Publication - MANDATORY reading. And of course one must visit the contents of these books frequently along with each manual that came with the product. RTFM 73 Bob, K4TAX On 3/11/2019 3:07 PM, Al Lorona wrote: About two months ago I posted that amateur radio needs a tutorial, 'What to expect when you get an amplifier'. As we see again and again here even basic things like cables, connectors, grounding, and house wiring that work fine at 100 W may be inadequate for 1500 W. We need guidance to study our stations piece by piece to ensure those pieces can handle these power levels without failing or causing problems. Al W6LX __ 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] 1500 W is a lot of power
Anyone who writes one should include a note about replacing older GFCI breakers (ARRL website is quite helpful). Tom W4KX Sent from my iPad > On Mar 11, 2019, at 4:07 PM, Al Lorona wrote: > > About two months ago I posted that amateur radio needs a tutorial, 'What to > expect when you get an amplifier'. As we see again and again here even basic > things like cables, connectors, grounding, and house wiring that work fine at > 100 W may be inadequate for 1500 W. We need guidance to study our stations > piece by piece to ensure those pieces can handle these power levels without > failing or causing problems. > > Al W6LX > __ > 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] 80m KPA1500 High reflected power problems **SOLVED!**
I've got my bonding about as good as I can get it for the moment, although I'm probably going to do some improvements this year. The lightning arrestors are built in to the RCS-12 antenna switchbox (RCS-12L with the gas discharge tubes), and everything's bonded at the base of the tower. There's a single feedline coming inside from that tower-mounted switchbox. Each piece of radio gear and the computer inside is bonded by 1" braid going to a copper bus. LAN and voice line comms are not, however the connection from the pole is fiber, not copper so that's not likely a problem. The copper bus inside is bonded to a ground rod outside the shack, which in turn is bonded to the tower ground system. The deficiency is that the copper bus is not grounded to the same point as the tower, since the tower is about 50 feet away from the shack. I guess I could run a 50 or 60' run of 2" strapping from the desk, through the floor, across the crawlspace, and out the conduit to the tower, but I suspect that might be more a hindrance than a help, quite honestly. - pjd -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of Jim Brown Sent: Monday, March 11, 2019 2:18 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] 80m KPA1500 High reflected power problems **SOLVED!** On 3/10/2019 10:33 PM, Peter Dougherty wrote: > I have a 30 foot vertical ground-plane style antenna that I use for diversity RX on 40 and 80, which was connected to the AUX antenna port. This was being overloaded by the QRO power from the TX antenna feedpoints just a few feet laterally and 40-50' higher vertically. As soon as I disconnected this antenna the problem went away. Hi Peter, It sounds to me like your station (and maybe your home) is not properly bonded. All of your feedlines SHOULD be bonded to a common ground at lightning arrestors where they enter your shack, all the equipment in your shack SHOULD be bonded together and to all of the grounds in your home including that one, power, telco, CATV, and satellite. If you've done this, disconnecting one of the antennas from your rig should not change anything on the transmit side -- the only change should be overload of the second RX by that antenna. Two good references on grounding and bonding. One is N0AX's recent ARRL book on the topic. The second is the set of slides for talks I've done at Pacificon and Visalia on the topic. http://k9yc.com/GroundingAndAudio.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 __ 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] 1500 W is a lot of power
There's also the traditional maxim: Get an amp, meet the neighbors. ...robert On 3/11/2019 20:07, Al Lorona wrote: About two months ago I posted that amateur radio needs a tutorial, 'What to expect when you get an amplifier'. As we see again and again here even basic things like cables, connectors, grounding, and house wiring that work fine at 100 W may be inadequate for 1500 W. We need guidance to study our stations piece by piece to ensure those pieces can handle these power levels without failing or causing problems. Al W6LX __ 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 -- Robert G Strickland, PhD ABPH - KE2WY rc...@verizon.net.usa Syracuse, New York, USA __ 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] [K3] Spontaneous HI CUR, audio reduction in RX mode - UPDATE
If the “723” doesn’t fix it, call Astron. They don’t have much of a customer service department, but the guy who answers the phone will sell you a replacement “control board” for $20.00 plus $7.00 shipping. Assuming the diodes and caps are still good. Sent from my iPhone ...nr4c. bill > On Mar 11, 2019, at 8:04 AM, Charlie T wrote: > > It would also be very helpful if you can find the cause of the problem > inside the RS-20A. > There's probably more of those particular supplies and their family than any > others. > I'm fairly sure they use the old reliable "723" regulator that has been > around since it seems, Hertz experimented with sparks. > > As an old sage used to offer a useful piece of advice."It's probably a > resistor or a capacitor or something". > > 73, Charlie k3ICH > > > > > -Original Message- > From: elecraft-boun...@mailman.qth.net On > Behalf Of Mike K8CN > Sent: Sunday, March 10, 2019 8:25 PM > To: elecraft@mailman.qth.net > Subject: Re: [Elecraft] [K3] Spontaneous HI CUR, audio reduction in RX mode > - UPDATE > > I may have found the cause of the anomalous HI CUR warning in **receive** > mode, thanks to my big orange Maine coon cat, Mr. Opie. In rubbing his chin > on the VFO B knob while I was listening last night, he rotated the control > to the 12V DC bus voltage display, which I then noticed was oscillating > between 13.6 V and 12.7 V. When I checked the DC bus current display, it > was oscillating between 0.4 A and 2.1 A - clearly something was amiss. > > Tonight I checked the terminal voltage on my Astron RS20-A linear supply, > and found it to be stable at 13.7 V with no load (K3 turned off), but then > it dropped to 13.4 V with the K3 'on' in receive mode. I again checked the > K3's internal volt/ammeter readings and found the same periodic oscillation > in each one. Curious to know if the oscillation was due to an interaction > with the supply regulator, I swapped out the RS20-A for my Astron SS-30 > SMPS, which I normally use with my K2/100 setup. > > Lo and behold, the DC bus oscillations ceased! > > I have not yet spent enough time listening using the alternate power supply > to know if the HI CUR warnings will also cease, but will do so over the > coming week. Fortunately, I don't have to watch the K3 display because the > HI CUR condition also reduces headphone audio substantially, which gets my > immediate attention. > > Kudos to Mr. Opie for his uncanny sense of what might reveal a potential > cause of the spontaneous HI CUR warnings in receive mode. > > 73, > Mike, K8CN > > > > -- > 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 __ 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] 80m KPA1500 High reflected power problems **SOLVED!**
I have that exact front-end protector on the main RX line from the K9AY, but I didn't have it on the AUX antenna. I will now, obviously. - pjd -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of j...@kk9a.com Sent: Monday, March 11, 2019 1:58 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] 80m KPA1500 High reflected power problems **SOLVED!** I am not sure how a second antenna effects the amplifier, I believe that the K3(S) has a safeguard from some overload conditions. If your RX antenna is close to your TX and you run HP, I would protect your transceiver from overload by either shorting the RX feedline during TX or with a protector such as this one: https://www.dxengineering.com/parts/dxe-rg-5000 John KK9A PETER DOUGHERTY W2IRT wrote: - Hi folks, FOUND THE PROBLEMMaybe?? I have a 30 foot vertical ground-plane style antenna that I use for diversity RX on 40 and 80, which was connected to the AUX antenna port. This was being overloaded by the QRO power from the TX antenna feedpoints just a few feet laterally and 40-50' higher vertically. As soon as I disconnected this antenna the problem went away. NOTE that the problem only occurred on the lower CW portions of both 80 *and 40*, as I found out tonight. In the SSB sections, even on CW transmit, there were no problems. But as I said, disconnecting the diversity AUX antenna solved the High SWR amp fault. So now, the big question, is there some form of filtering within the K3s to disable receive on the AUX line during transmit, or do I have to look into a second "front end protector" device as I have on my K9AY loop connected to the RX IN port. Or perhaps some other valid solution? At least I'm glad I finally have full operation back on 40 and 80! __ 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] [K3S] sub receiver filter recommendation
Thanks to all respondents. To clear up one point... "Migration," as per Elecraft, means to transfer whatever components in a K3 that will work to a K3S. In my case, just filters. I end up with a new K3S and the original K3, ie two radios. I have never operated SO2V in a contest. So, my curiosity is focused on which CW filter in the sub-receiver, if any, works best in the SO2V contest environment. With the K3, I have usually run with the 500cps filter, so I'm guessing there should be no significant difference when operating SO2V. But, I want(ed) to get a feel for this mode from others who have used it in contests. The Elecraft 400cps filter seems to be slightly preferable to the 500cps filter for reasons cited. Diversity is not an option here [limited antennas]. Again thanks. ...robert On 3/11/2019 01:59, Robert G Strickland via Elecraft wrote: I am migrating my K3 [Ser# 6232] to a K3S with a sub-receiver. In the K3S main receiver I will have the following crystal filters from the K3: 2.8Kc 8-pole Elecraft 1.9kc ?-pole Elecraft 0.5kc 8-pole Inrad 0.2kc 5-pole Elecraft I operate almost exclusively CW in contests and DX chasing. in contests, I anticipate using the sub-receiver in a SO2V arrangement, the main receiver in S and the sub- in running. Given this operating arrangement, which single crystal filter in the sub- would be "best?" I understand that personal preferences play a big part in choosing a filter, yet I'm wondering if there's a broad consensus in the filter width that most folks choose, most of the time, in this application. Thanks in advance for any and all opinions and advice. ..robert -- Robert G Strickland, PhD ABPH - KE2WY rc...@verizon.net.usa Syracuse, New York, USA __ 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] 1500 W is a lot of power
About two months ago I posted that amateur radio needs a tutorial, 'What to expect when you get an amplifier'. As we see again and again here even basic things like cables, connectors, grounding, and house wiring that work fine at 100 W may be inadequate for 1500 W. We need guidance to study our stations piece by piece to ensure those pieces can handle these power levels without failing or causing problems. Al W6LX __ 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] 80m KPA1500 High reflected power problems **SOLVED!**
On 3/10/2019 10:33 PM, Peter Dougherty wrote: I have a 30 foot vertical ground-plane style antenna that I use for diversity RX on 40 and 80, which was connected to the AUX antenna port. This was being overloaded by the QRO power from the TX antenna feedpoints just a few feet laterally and 40-50' higher vertically. As soon as I disconnected this antenna the problem went away. Hi Peter, It sounds to me like your station (and maybe your home) is not properly bonded. All of your feedlines SHOULD be bonded to a common ground at lightning arrestors where they enter your shack, all the equipment in your shack SHOULD be bonded together and to all of the grounds in your home including that one, power, telco, CATV, and satellite. If you've done this, disconnecting one of the antennas from your rig should not change anything on the transmit side -- the only change should be overload of the second RX by that antenna. Two good references on grounding and bonding. One is N0AX's recent ARRL book on the topic. The second is the set of slides for talks I've done at Pacificon and Visalia on the topic. http://k9yc.com/GroundingAndAudio.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] 80m KPA1500 High reflected power problems **SOLVED!**
I am not sure how a second antenna effects the amplifier, I believe that the K3(S) has a safeguard from some overload conditions. If your RX antenna is close to your TX and you run HP, I would protect your transceiver from overload by either shorting the RX feedline during TX or with a protector such as this one: https://www.dxengineering.com/parts/dxe-rg-5000 John KK9A PETER DOUGHERTY W2IRT wrote: - Hi folks, FOUND THE PROBLEMMaybe?? I have a 30 foot vertical ground-plane style antenna that I use for diversity RX on 40 and 80, which was connected to the AUX antenna port. This was being overloaded by the QRO power from the TX antenna feedpoints just a few feet laterally and 40-50' higher vertically. As soon as I disconnected this antenna the problem went away. NOTE that the problem only occurred on the lower CW portions of both 80 *and 40*, as I found out tonight. In the SSB sections, even on CW transmit, there were no problems. But as I said, disconnecting the diversity AUX antenna solved the High SWR amp fault. So now, the big question, is there some form of filtering within the K3s to disable receive on the AUX line during transmit, or do I have to look into a second "front end protector" device as I have on my K9AY loop connected to the RX IN port. Or perhaps some other valid solution? At least I'm glad I finally have full operation back on 40 and 80! __ 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: Flaky 160M switching-solved?
As a follow-up, I've either fixed the problem, or it's become a lot more (or less?) intermittent... Twice, I re-touched all of the solder joints involved with the 160M option, both on the 160M board and the K2's RF board - it never helped. Tapping on the 160M board's mounting screw, or the left side panel at the rear 2d connector would cause the band to work. J14 is a tall header that connects the 160M board to the K2. It is made up of two parts, and seems a bit fragile. I replaced it, and so far 160M has not failed again. Also, I had tightened the BNC antenna connector against the heat sink panel. That was apparently flexing the RF board. My guess is that J14 had an internal failure because of that, so I left the BNC loose on the heat sink panel. We'll see if everything continues to function. Again, thanks for the help! 73, Jim KO5V -Original Message-- >From: Don Wilhelm >Sent: Mar 2, 2019 5:36 PM >To: Jim KO5V , Elecraft List >Subject: Re: [Elecraft] K2: Flaky 160M switching > >Jim, > >Unplug the K160RX and then plug it back in to wipe any oxidation off the >pins. That may or may not help, but is one easy thing to do "just in case". > >73, >Don W3FPR __ 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] [K3] Spontaneous HI CUR, audio reduction in RX mode - UPDATE
It would also be very helpful if you can find the cause of the problem inside the RS-20A. There's probably more of those particular supplies and their family than any others. I'm fairly sure they use the old reliable "723" regulator that has been around since it seems, Hertz experimented with sparks. As an old sage used to offer a useful piece of advice."It's probably a resistor or a capacitor or something". 73, Charlie k3ICH -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of Mike K8CN Sent: Sunday, March 10, 2019 8:25 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] [K3] Spontaneous HI CUR, audio reduction in RX mode - UPDATE I may have found the cause of the anomalous HI CUR warning in **receive** mode, thanks to my big orange Maine coon cat, Mr. Opie. In rubbing his chin on the VFO B knob while I was listening last night, he rotated the control to the 12V DC bus voltage display, which I then noticed was oscillating between 13.6 V and 12.7 V. When I checked the DC bus current display, it was oscillating between 0.4 A and 2.1 A - clearly something was amiss. Tonight I checked the terminal voltage on my Astron RS20-A linear supply, and found it to be stable at 13.7 V with no load (K3 turned off), but then it dropped to 13.4 V with the K3 'on' in receive mode. I again checked the K3's internal volt/ammeter readings and found the same periodic oscillation in each one. Curious to know if the oscillation was due to an interaction with the supply regulator, I swapped out the RS20-A for my Astron SS-30 SMPS, which I normally use with my K2/100 setup. Lo and behold, the DC bus oscillations ceased! I have not yet spent enough time listening using the alternate power supply to know if the HI CUR warnings will also cease, but will do so over the coming week. Fortunately, I don't have to watch the K3 display because the HI CUR condition also reduces headphone audio substantially, which gets my immediate attention. Kudos to Mr. Opie for his uncanny sense of what might reveal a potential cause of the spontaneous HI CUR warnings in receive mode. 73, Mike, K8CN -- 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] KX3 Temp. Cal. Routine Issue Revisited
Hi Rick, I did not have the same results as you have described using a hair dryer. But, I didn't get the results I wanted or expected using a hair dryer based on process documented in the Elecraft manual. If you can find an incandescent light bulb (60w is fine) and try that instead of the hair dryer, I wonder if your results will be different. I had much better results with the light bulb approach than the hair dryer when doing the KX3 temp compensation procedure. regards, Brian VE3IBW On Mon, Mar 11, 2019 at 11:15 AM rick jones via Elecraft < elecraft@mailman.qth.net> wrote: > So I'm having the same problem as I've read in a few past posts (with no > resolution). At Approx. 40DegC I lose the signal in the speaker, the S > meter reads no signal, and the F value starts to wildly swing in the 700 > range. I'm directing my hot air at the heatsink for what that's worth. I > had it increasing at about 1degC per 1-2 minutes as instructed. I can't > imagine the procedure is still going ok given those symptoms but maybe it > is. Any thoughts? Thanks. > __ > 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] KX3 Temp. Cal. Routine Issue Revisited
So I'm having the same problem as I've read in a few past posts (with no resolution). At Approx. 40DegC I lose the signal in the speaker, the S meter reads no signal, and the F value starts to wildly swing in the 700 range. I'm directing my hot air at the heatsink for what that's worth. I had it increasing at about 1degC per 1-2 minutes as instructed. I can't imagine the procedure is still going ok given those symptoms but maybe it is. Any thoughts? Thanks. __ 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] P3 SPAN Instability
Thanks for the info sir! 73s and thanks, Dave (NK7Z) https://www.nk7z.net Award Manager, 30MDG Grid Awards ARRL Technical Specialist ARRL Volunteer Examiner ARRL OOC for Oregon On 3/10/19 12:01 PM, Victor Rosenthal 4X6GP wrote: No, the save/restore restored everything to how it was before. 73, Victor, 4X6GP Rehovot, Israel Formerly K2VCO CWops no. 5 http://www.qsl.net/k2vco/ On 10 Mar 2019 20:57, Dave Cole (NK7Z) wrote: I have been thinking of that. When you did it, was your P3 revocered to the same exact setup as when you saved the config file? Did you have to resetup anything else? 73s and thanks, Dave (NK7Z) https://www.nk7z.net Award Manager, 30MDG Grid Awards ARRL Technical Specialist ARRL Volunteer Examiner ARRL OOC for Oregon __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K2: Looking for two kits for the K2
I am looking for two kits for the K2...the K6XX zero-beat indicator kit for the K2 and the Rework Eliminators internal mic adapter kit for the K2. If anyone has either of these kits that are excess to their needs, please contact me off list. 73, John WB4GLJ __ 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] ALC
Does anyone have a built or un-built KSB2 SSB Option for K2 they would sell? Please reply off-reflector to j...@w5la.net. 73, Jim W5LA __ 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] 80m KPA1500 High reflected power problems **SOLVED!**
Well, there's one final, further item to add to this. I've almost certainly destroyed my sub receiver. It's not completely deaf, but very, very, very close to it. Signals that are in the noise on VFO-B are S9 on VFO-A on the same frequency. Anything I can do to test this out? With Bouvet coming soon (hopefully) I'm really hoping to have a working radio to work this ultra rare one. The risk of another 4 or 5 weeks of down time is very depressing at this stage. - pjd -Original Message- From: Peter Dougherty Sent: Monday, March 11, 2019 1:33 AM To: 'elecraft@mailman.qth.net' Subject: RE: [Elecraft] 80m KPA1500 High reflected power problems **SOLVED!** Hi folks, FOUND THE PROBLEMMaybe?? I have a 30 foot vertical ground-plane style antenna that I use for diversity RX on 40 and 80, which was connected to the AUX antenna port. This was being overloaded by the QRO power from the TX antenna feedpoints just a few feet laterally and 40-50' higher vertically. As soon as I disconnected this antenna the problem went away. NOTE that the problem only occurred on the lower CW portions of both 80 *and 40*, as I found out tonight. In the SSB sections, even on CW transmit, there were no problems. But as I said, disconnecting the diversity AUX antenna solved the High SWR amp fault. So now, the big question, is there some form of filtering within the K3s to disable receive on the AUX line during transmit, or do I have to look into a second "front end protector" device as I have on my K9AY loop connected to the RX IN port. Or perhaps some other valid solution? At least I'm glad I finally have full operation back on 40 and 80! - pjd __ 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
