Re: [Elecraft] Elecraft KX1 remains keyed with straight
I have a straight key which has leakage resistance; does just about what you describe... Roy K6XK On 10/11/2023 12:47 PM, chuck gehring wrote: My KX1 remains keyed when I use a straight key, but works fine when I change settings and use a paddle. Any recommendations? __ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] K3 cable for Mercury Lux amplifier
I would like to know if the following connections would work for low power tuning and BCD Mercury Lux bandswitching: DE15p K3 Mercury Lux DB9 Band 3 (D) pin14 pin 8Band 2 (C) pin 9 pin 3Band 1 (B) pin 3 pin 7Band 0 (A) pin 13 pin 2Ground pin 12 pin 9 Would Low Power pin 5 on the DE15p go to the the Remote jack on the MercuryAT automatic tuner?Thanks, Roy Morris W4WFB __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Lightning
My antenna is a broad-banded, low-Q, folded-fan vertical, low profile at just 33 ft. tall on a city lot. It covers 160m thru 6m with just a few components in its "tuner box" at feedpoint on the ground. Of course everything is directly connected to Mother Earth ground, DC wise and RF wise, which Hiram Percey referred to as 'plumber's delight.' It has 36 slightly buried radials and 38 ground rods in the back yard. Trees around here are much taller. Utility grounds are tied in. I sleep fairly well during storms. 73, Roy K6XK __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] KPA1500 Beta Firmware
Should we not download beta v. 2.62 or v. 2.66 for now and go back to production v. 2.58? Roy W4WFB __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] K4 Front Panel Phones Jack
When I plug my AKG K240 headphones into the front panel jack, my K4D produces static when transmitting. Removing the headphones plug, my transmitted audio is normal. If I use the rear jack with these same headphones, there is no problem with my transmitted audio.The Elecraft K4 operating manual (rev 17, March 10,2022) states some headphones will not work with the front panel phones jack unless a resistor is added in parallel. The front phones jack depends on the transducer providing a resistance path to ground when inserted.I hope this can be fixed in a future firmware update. Roy Morris W4WFB __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] PRE/ATTN Button on K4D
If the PRE/ATTN button is turned OFF, does this mean the receive AUTO preamp/attenuation is also turned off even if it is showing ON in the menu? Thanks, Roy W4WFB __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] K4D Receiver Question
Considering the high noise level on the 75 meter band, has anyone had to use both 21 db of attenuation with PRE/ATTN button and additional attenuation with the RF/SQL encoder? All illustrations have shown the RF/SQL encoder set to zero (default), Is the RF/SQL encoder to be used only for squelch? Under what conditions is it used for RF if not for attenuation? Thanks, Roy Morros __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] K4D Receiver Question
I find my receiver is very noisy. I know this time of the year receiver noise can be very high. I have to use all 21 db of reduction from the PRE/ATTN button and around 30 db reduction on the MRF encoder to get the radio quiet enough to hear hear signals adequately on the 75, 40 and 20 meter bands on my G5RV antenna. I can significantly decrease the noise with the NR set to a high level, but the signal is also degraded and reduced. The receiver auto attenuation is ON in the menu. All AGC settings are set to factory default. I am using the current R30 firmware, and all transmit and receive parameters check out OK. I would like to know if it is normal to have to use the MRF/SRF encoder to get the noise down on the receivers. All of the pics I have seen show the MRF/SRF set to zero (default). My K4D is equipped with the KAT4, KPA4 and 2 KSP4 speakers. This is a wonderful radio, and I want to operate it correctly. I get good reports on my signal. I have been told the CESSB increases my audio by 8db and the bandpass skirts are sharp and clean.Thanks for your thoughts on how I am operating this great radio. Roy Morris W4WFB __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] Using P3 with K4D
I noticed Eric was demonstrating K4 CESSB showing the waveform in the P3 display. I would like to know how the P3 is connected to the K4. Thanks, Roy W4WFB __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KPA1500, 4 years old, Intermittent LOW GAIN error.
Check your idling current -- should be stable at about 2 amps. 73, Roy K6XK Over the last couple of weeks, I have an intermittent problem with the amp. On a number of occasions, I have received a LOW GAIN error message. The output drops from 1400W to a few hundred watts or less as confirmed in the logging file and my external power meter The problem can go away for a few days and then return. Cycling the power has no effect, the intermittent may or may not return almost immediately. Has anybody experienced a similar problem? Thanks - Paul KW7Y _ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] K4 Firmware Updating
Can I connect the ethernet port directly from my internet sevice provider router to my K4 for firmware updates? If so, would I need to go into the K4 menu and change the IP address since NO ETHERNET is the default setting? Thanks. Roy Morris W4WFB __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] K3 LPA TVS Clamp Diodes
I would appreciate a pic showing the installation of the TVS clamp diodes across the two LPA amplifier transistors in the K3.. Thanks Roy Morris W4WFB __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] LPA Mod for K3/K3S
I would like to see how these diodes are placed on the LPA board. Thanks for any info on this. Roy Morris W4WFB __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] "Low Gain Ratio" Hard Fault
Check your idling current. 73, Roy K6XK On 12/5/2021 12:22 PM, Cono DelRosso wrote: Hello, I have a KPA1500 Over a year old, Came back from Elecraft on May 2021 for 12v supply connector issue repair. Does anyone have experience handling this particular hard fault "Low Gain Ratio” Now I have low output 30w in only puts out 400watts Cono, W2ZMZ __ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3S line out and sidetones
Mine NEVER has ! 73, Roy K6XK The K3S does transmit in Test mode. I've seen 50W of output from my KPA500, while in Test mode. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KPA-1500 problem
Dick, during such episodes, what is the SWR meter on the amp reading? Could amp be on the verge of protecting itself? Roy K6XK Hi Guys, My KPA-1500 is having an issue: with the internal ATU tuned "OFF" or in "ByPass" mode, when transmitting the KPA-1500's relays occassionally chatter like a machine gun while transmitting. It sounds just like the relays do when the ATU is turned "ON" and it's tuning an antenna for minimum SWR. Are there any KPA-1500 configuration settings that could cause this to occur even though the ATU is turned "OFF"? Any ideas why this is happening? Thanks! Dick- K9OM __ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Plug on KPA-1500
David, Mine came with a standard 240 v cord and plug. Could someone have replaced yours? 73, Roy K6XK On 8/5/2021 10:48 AM, David F. Reed wrote: I am in a bit of a situation here… in trying to get a 240 V circuit wired for the shack to fit the plug coming from my KPA1500, the electrician tells me that it is a 120 V plug, and that is it against the law for him to wire a socket for that to 240 V. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] K3/K3s keying with bugs, ponderings
Relating to contact bounce, I wonder what the typical length of a bounce is? We hear QRQ stations operating at 60+ wpm all the time. If Elecraft designed to smooth out such short "dots" from semi-auto key bounce, then perhaps a K4 would not allow 70+ wpm speeds to be sent either? 73, Roy K6XK __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] Sudden KPA1500 power reduction
Ditto here -- mine's at the factory. 73, Roy, K6XK On 2/21/2021 11:32 AM, Frank Scolaro wrote: Happened to me several months ago... one LDMOS out! same symptoms. You need the power with such great band conditions... GL Frank, W2YK __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3 shortening CW dits
Increase the weight setting going into the K3 jack. 73, Roy K6XK harp-eared operator at W3LPL told me that my CW keying sounded a little light in the CQWW contest. I am using a Winkeyer, controlled by N1MM Logger, connected to the KEY jack on the back of the K3. An oscilloscope shows that the Winkeyer is producing a string of dits at the proper 50% duty cycle. However, looking at the RF envelope of the K3 output, the duty cycle is about 40%. Listening to the K3 on another receiver, the dit shortening is quite noticeable. If I set CONFIG: CW QRQ = ON, the transmitted dits are exactly 50% duty cycle. However I can’t live with the RIT, Split, etc. restrictions with QRQ ON. I have two K3’s, and they both behave the same way. Any ideas out there? __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KPA 1500 efficiency
Yes, I read the same. Lowering the PA voltage might be a bit difficult... 73, Roy K6XK On 11/13/2020 8:27 AM, Howard Sherer wrote: Reading the display on the KPA 1500 at various RF output levels shows an efficiency as follows on 40M into a dummyload: 300W 23% 500W 27% 1000W 42% 1300W 48% 1500W 52% 1600W 54% Have other owners seen results like this? Do you think a firmware and menu item could be developed to increase the amps efficiency at lower power levels by lowering the voltage to the PA? __ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KPA1500/GainLow/Input Pwr
Frank, Check the idling current: it should be 2 amps (keyed with no drive). Gud luck, Roy K6XK My KPA1500 just started needing a lot more drive (2X) to get 'normal' output. I normally need 25-30 watts drive to get ~1k out. Now I need about 60W. I get two kinds of alarms, depending on how I test the situation, either a red "Gain Low' or a yellow 'Input Pwr'. If I drive with a steady 10w, I get a 'Gain Low'. On cw, Just before cutting out, I can drive the amp with ~65w, get ~600w out, then get 'InputPwr" followed by Gain Low' and the amp cuts out. Time to go back to the factory? Tnx, Frank W2YK _ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] "Introduction to the Elecraft K4" manual now available
Excellent! I'm looking forward to generating many new synapses! Roy, K6XK __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] KPA-1500 SWR fault above 700-800 watts on 160m
KPA1500 tuner is rated for maximum antenna SWR of just 3 to 1. 73, Roy K6XK __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] Connecting IC-7300 to KPA1500
I would like the KPA1500 to change bands and frequency bins established by the IC-7300. I understand this can be done with these cables:1) Cable between KPA1500 KEY-IN jack and IC-7300 SEND CONTROL jack.2) Stereo cable between KPA1500 XCVR SERIAL and IC-7300 CI-V REMOTE CONTROL jack. This is a stereo cable with 3.5mm jacks on each end. 3) KPA1500 serial speed host and SERIAL XCVR SPEED should both be set to 19200.4) I am not sure about this step. When XCVR serial host is disabled, does this mean CI-V TRANSCEIVE in IC-7300 menu should be OFF?Thanks for helping me with the KPA1500 and IC-7300 menu items. Roy Morris W4WFB __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Test
We see 'em fine. Roy, K6XK On 7/5/2020 11:41 AM, kevinr wrote: test I have been able to see my emails to the reflector for years. No I cannot. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] earpads shedding
I recall reading that navy sparkies used ladies' falsies as nice soft, scented pads. 73, Roy K6XK __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Maximum RF power through KP1500 in Standby ?
200 watts both counts. 73, Roy K6XK What is the maximum power allowed though the KPA1500 when in Standby ? What is the maximum power allowed though the KPA1500 when in Power Off ? __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] Elecraft KPA500 LPF T/R Switch Rework Rev. E Mod
I have talked with Elecraft today about the need for the E850607 parts kit. I was told this parts kit is needed for the Rev. D9 board that is populated with surface mount components. I have an EARLIER board (A or B) that has the non-surface mounted yellow capacitors. Because Elecraft could no longer procure components for the A or B boards, they went with a surface mount board. It is this surface mount board that needs its parts changed and not the earlier A and B boards. This was what the Elecraft technician told me. Roy Morris W4WFB __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] New Revision of KPA500 LPF TR Switching Rework Rev. E
I have an early KPA500, and it works flawlessly. Is this mod recommended by Elecraft on ALL amplifiers that presently have Rev. D ? This mod requires considerable disassembly, and I don't want to do it unless it is highly recommended. Please state the specific reason for this mod. Thanks. Roy Morris W4WFB __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3 no RF Output
Check your TMP cable connections. Sent from Mail for Windows 10 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3S AGC action in CW
Roger, My K3s AGC works as expected -- goodluck. 73, Roy K6XK Hi, when operating the K3S in CW mode I found there is no difference in switching between AGC-F(ast) and AGC-S(slow). It seems the "default" setting is on slow and does not go to fast (compared to the decay characteristic in SSB). The manual explains that the AGC Fast/Slow response should also be effective in CW. Can anyone confirm this behavior (or not)? Firmware version is 5.66 (actually supposed to be 5.67 with the "label" of the previous version). 73/Roger - DL5RBW __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to k...@ncn.net __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] Test
New PC (and OM) __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KPA500 Problem
Could a rectifier diode have gone open (as in it's now a half-wave circuit)? If so the filter caps are at 60 Hz. Just a thought... RoyK6XK I have a KPA500 with a low HV reading. It is on the center tap and AC voltage is 115v No load and 110v full load. The HV goes from 77v NL to 56v FL (500W output) Is that something I should look into?Doug K6JEY __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] CW problem
John, I think you may have won the Unique Problem Award with that one. Good luck (sorry). Roy K6XK I am trying to run down a CW transmit problem on my K3s. Anytime I change the mode from LSB or USB on any band to CW it starts to send a “dit” without stopping and I have to halt it by restoring the configuration. This does fix it until I try to switch to CW again; and then, the same story. I recently removed a Kent (straight key plug) and the problem showed up. Any ideas? John Freitag, WW4JF __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Fusing power cable on K3
No, fuses have voltage drop both in their elements and contacts. Just what you're trying to defeat and avoid. 73, RoyK6XK I recently purchased a used K3 and am building a short power cord (after the discussion of voltage drop from longer cables). I noticed that the power cable that came with my IC7000 has fuses in both leads. Since the K3 has a built in fuse it is still a good idea to put fuses in both sides of the new power cable? It will be only used in the shack, not mobile. Dave K8WPE __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KX2 Paddle question
Ken, I don't own a KX2, but perhaps tiny applications of one of the various 'threadlockers' on the market would be perfect. The thread lock comes in small tubes and is available in several "strengths." Use only the lowest strength -- the high strength can be virtually permanent! 73, Roy K6XK -I’ve recently bought a KX2 and am enjoying it. I have an annoying problem with the KX2 Paddle. The contacts continue to get loose. I have them adjusted so that there is very little play. I set them up this way to keep the mechanical clacking noise down and liked it so much that I changed my other paddle for my shack radio to the same adjustment. HOWEVER… on the KX2, after just a few minutes the paddles get loose again and start clacking again. There is a separate set-screw (that was loose) that I thought might make tighten onto the adjustment screw and keep it from backing out. I’ve tightened them, but they don’t seem to affect the adjustment screw’s ability to get loose. And, I don’t see these screws on the exploded view I got with the KX2 or on the PDF on their website. I guess a second question might be what do these screws do? One is visible on the top of the right-hand paddle and one is on the bottom of the left-hand paddle very near to the adjustment screws. Thanks in advance, -ken K4EES __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KPA1500 Power Supply Fan Noise
Eric -- this is not at all normal! My PSU is quiet...hardly hear it from under the table. I understand Elecraft changed to much quieter fans maybe two years ago. But even so, perhaps the voltage to your fans has soared way to high? I haven't looked at the circuit driving them. Maybe lost regulation, etc. 73, RoyK6XK Apparently I was not clear enough in my message. It is the PSU fan noise that is deafening, not the RF deck. Like Peter, my PSU sits on the floor underneath a wooden operating desk that holds the rest of the K-line. The noise from the PSU is high-pitched and piercing. The only thing I can liken it to is a four-rotor Mazda prototype IMSA GTP race car from the early 90s. Brain-piercing, tear-your-hair-out, heard-from-every room-in-the-house louder than hell, and has been so since the day it darkened my doorway--with the RF deck at idle. 73 Eric WD6DBM __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Clipping first element of CW - K3/KPA-1500
Pete...odd is right. Does it happen when using built-in keyer? 73, Roy K6XK -Running into what I'm sure is a simple matter of menu settings, but... My K3 is set for PTT with a "normal" TX delay of 008 (I presume 8 ms.), driving a KPA-1500. I am getting persistent reports of clipping one dash worth at the beginning of each transmission, so my casll becomes "E4ZR", for example. I've been through both manuals, and aside from setting a higher TX Delay, I don't know what I can do to clean this up. so what am I missing? 73, Pete N4ZR __ 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 F/W ver 2.17 now available
K4WJ alerted me that you can access ver 2.17 on your Utility. Went right in! 73, Roy K6XK __ 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] Measuring SWR (Long)
"...Let's allow the reflected power to increase all the way to 10 watts! At that point, your SWR would be about 2 to 1. Sounds pretty bad, but surely if you were stranded in the desert and had to use your KX3 and a wire to get help, you'd be happy to have a match this good...(etc.)" From memory now, at 2 to 1...feedline voltage nodes and current nodes can double -- no small thing when power is 1500 watts; can stress antenna system components. 73, RoyK6XK __ 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 v. 2.17
Ditto, Ron! 73, RoyK6XK Thanks, Ron! 73 de Dick, K6KR Just installed new Firm-Ware Version 2.17. It has solved all the digital wattmeter anomalies and is working perfectly here. I recommend this version for next standard Firm-Ware update. Thank you. 73's Ron Durie WB4OOA Elecraft K-Line 704-843-3681 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] KPA1500 Firmware v. 2.10
I am re-installing v. 2.09 until 2.10 is fixed. Roy Morris W4WFB __ 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 v. 2.10 addendom 2
Seems that the ammeter current is also much more erratic reading now while sending CW. Roy -Original Message- From: Roy Koeppe Sent: Sunday, March 31, 2019 5:44 AM To: Elecraft Reflector Subject: Re: [Elecraft] KPA1500 v. 2.10 addendom Discovered another anomaly...the digital SWR display changes from example, 1.1 to 1 with key down, to 1.0 to 1 with key up as left in its 'memory' reading after sending is stopped. The LED SWR meter does not always correspond perfectly with the digital display also now. Roy K6XK -Original Message- From: Roy Koeppe Sent: Sunday, March 31, 2019 5:15 AM To: Elecraft Reflector Subject: Re: [Elecraft] KPA1500 v. 2.10 Thanks for that report Roy. Notice the same defect here in the digital display. I have only worked CW mode so far, and the power reading is erratic and varies with 'duty cycle' -- a string of dots causes a very low reading, while a string of dashes is more accurate and less erratic. Do hope a correction is provided for us soon. 73, Roy Koeppe K6XK -Original Message- From: Roy Morris, Jr. via Elecraft Sent: Saturday, March 30, 2019 10:57 PM To: Elecraft Reflector Subject: [Elecraft] KPA1500 v. 2.10 After loading v.2.10 the LEDs seem to show the correct power level at or near the 1500 watt level. At reduced power levels the LEDs stream faster but seem to also show the correct power level.The blue display window does not show the correct power level. It consistently shows a very low power level. Roy Morris W4WFB __ 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 v. 2.10 addendom
Discovered another anomaly...the digital SWR display changes from example, 1.1 to 1 with key down, to 1.0 to 1 with key up as left in its 'memory' reading after sending is stopped. The LED SWR meter does not always correspond perfectly with the digital display also now. Roy K6XK -Original Message- From: Roy Koeppe Sent: Sunday, March 31, 2019 5:15 AM To: Elecraft Reflector Subject: Re: [Elecraft] KPA1500 v. 2.10 Thanks for that report Roy. Notice the same defect here in the digital display. I have only worked CW mode so far, and the power reading is erratic and varies with 'duty cycle' -- a string of dots causes a very low reading, while a string of dashes is more accurate and less erratic. Do hope a correction is provided for us soon. 73, Roy Koeppe K6XK -Original Message- From: Roy Morris, Jr. via Elecraft Sent: Saturday, March 30, 2019 10:57 PM To: Elecraft Reflector Subject: [Elecraft] KPA1500 v. 2.10 After loading v.2.10 the LEDs seem to show the correct power level at or near the 1500 watt level. At reduced power levels the LEDs stream faster but seem to also show the correct power level.The blue display window does not show the correct power level. It consistently shows a very low power level. Roy Morris W4WFB __ 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 v. 2.10
Thanks for that report Roy. Notice the same defect here in the digital display. I have only worked CW mode so far, and the power reading is erratic and varies with 'duty cycle' -- a string of dots causes a very low reading, while a string of dashes is more accurate and less erratic. Do hope a correction is provided for us soon. 73, Roy Koeppe K6XK -Original Message- From: Roy Morris, Jr. via Elecraft Sent: Saturday, March 30, 2019 10:57 PM To: Elecraft Reflector Subject: [Elecraft] KPA1500 v. 2.10 After loading v.2.10 the LEDs seem to show the correct power level at or near the 1500 watt level. At reduced power levels the LEDs stream faster but seem to also show the correct power level.The blue display window does not show the correct power level. It consistently shows a very low power level. Roy Morris W4WFB __ 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 v. 2.10
After loading v.2.10 the LEDs seem to show the correct power level at or near the 1500 watt level. At reduced power levels the LEDs stream faster but seem to also show the correct power level.The blue display window does not show the correct power level. It consistently shows a very low power level. Roy Morris W4WFB __ 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] Sending AFSK RTTY
"The more parts you pile into the rocket, the more likely it will end up pointy end down somewhere in the western desert." --NASA proverb from Apollo Or, "Simplicity is Ingenuity" Roy K6XK __ 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 vs SPE Amps
About: "Has anyone had experience with both the KPA1500 and any of the current (1.3K, 1.5K or 2K) Expert Linears from SPE?" If you cherish silent, perfect CW QSK, then you need the KPA1500. SPE uses clacking relays. 73, RoyK6XK __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KPA-1500 ATU BYP light always on
About: "Just got my KPA-1500, and it seems to work great except that the ATU BYP light is always illuminated. The ATU operates normally when I light the IN light with the ATU Mode switch and apply drive. I can't find anything in the manual about this." Can anyone clarify? 73, Pete N4ZR Mine has that defect too Pete; serial number is 160 and I suspect yours is not brand new? Hope to hear from others here. I understand the factory has several update mods available for 'older' amps. So far I have simply ignored the funny behavior of the stuck LED. Mine has this issue ONLY on 40 meters. 73, RoyK6XK __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KPA1500 problem
" My KPA1500 (s/n 121) has developed a problem: When applying power (15-20W) from the K3 to the amp, it immediately faults to:low gain fault ratio 3 (sometimes ratio 2 to ratio 6). The SWR indicator shows high SWR as the amp faults. 100w only from exciter will cause ATU to tune to 1:1 but when amp is switched on, it immediately faults as above. Looked through archives and manual. No mention of this particular fault. Any ideas would be appreciated." I have had that exact same thing happen, and tracked it down to bad WW2 transmitting micas in my 160M Omega-match at the antenna feedpoint. Something is likely breaking down, as someone else just commented. Luck & 73, Roy K6XK __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] OT: Were you involved with Military Communications during the 1950's - early 1970"s?
Hi Doug, Yes I was from 1958 through 1962. How do I access the Questionnaire? Roy, K6XK -Original Message- From: Doug Hensley Sent: Sunday, December 16, 2018 12:14 PM To: Elecraft List Subject: [Elecraft] OT: Were you involved with Military Communications during the 1950's - early 1970"s? I would like to get in touch with other Veterans who served in one capacity or another, in Radio Communications during the years 1950's to early 1970's. If you would have time to complete a short questionaire sharing your experience, please get in touch. This is an on-line questionaire for a researcher tasked with assessing communications during this period. Whatever you share is direct with him. I am not in the loop, just trying to get the word out. Thank you, Doug Hensley, W5JV Visit https://www.qrz.com/db/W5JV for some great vacuum tube finds. Looking for something special? Ask us. Wanted: Petersen Type PR-1 in FT-243 holder cut for 1770 kHZ (Used in IF Stage of a Mackay Receiver). __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to k...@ncn.net __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KPA1500 FW 1.78 - no PTT response
I have loaded v.1.78 into my KPA1500 and PTT works fine through my K3. Roy Morris W4WFB Sent from Mail for Windows 10 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KPA-1500 Efficiency As A Function of Input Power
" Upon further testing, I have found that the efficiency of the KPA-1500 is varies greatly with driving power." That's the reason SPE amps have a power range selection choice setting. (Me thinks) 73, RoyK6XK __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3 power cord fuse
Ken, In my K3s it appears to be a 20A Breaker, with a push-button reset. Seems ignored in the manual! 73, RoyK6XK "How does one open the fuse holder. I am afraid of breaking it." Ken K5WK __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KPA1500 latest firmware
Scott, again if you have missed it, Elecraft has an 'ATU update Kit' for this purpose. Mine is to be shipped "soon." It is a PC filter board to be installed. 73,Roy K6XK SN 0178: With FW 1.64, the flashing SWR LED problem seems to be gone. On 10 meters, the display no longer goes half blank, but some extraneous characters show up when transmitting, but it returns to normal on receive. A big improvement, though perhaps eventually a bypass capacitor might be necessary. 73, Scott K9MA __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KPA1500 latest firmware
They must have made an "improvement" on some models since yours! Roy K6XK Iowa I am apparently fortunate. My KPA1500 is #29 and does not have that issue at full power out on 10 or 6. Ed.. AB4IQ Hi Paul, When attempting to transmit or 10 or 6 meters, the left half of the display instantly blanks out and remains that way till you reboot the amp power switch. Has been reported by several with early serial numbers like my #160. Roy K6XK - Could you describe this problem. I have not seen it. - Paul KW7Y At 05:27 AM 7/20/2018, Roy Koeppe wrote: Now am waiting for the promised ATU upgrade kit to fix the main display cut out problem which occurs on 10 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KPA1500 latest firmware
Hi Paul, When attempting to transmit or 10 or 6 meters, the left half of the display instantly blanks out and remains that way till you reboot the amp power switch. Has been reported by several with early serial numbers like my #160. Roy K6XK -Original Message- From: Paul Baldock Sent: Friday, July 20, 2018 9:36 AM To: Roy Koeppe ; Elecraft@mailman.qth.net Subject: Re: [Elecraft] KPA1500 latest firmware Could you describe this problem. I have not seen it. - Paul KW7Y At 05:27 AM 7/20/2018, Roy Koeppe wrote: Now am waiting for the promised ATU upgrade kit to fix the main display cut out problem which occurs on 10 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] KPA1500 latest firmware
Yesterday I updated KPA1500 Utility version and then firmware. That corrected the occasional random flashing of the SWR LED bar display curse on my s/n 160. Glad! Now am waiting for the promised ATU upgrade kit to fix the main display cut out problem which occurs on 10 and 6 meters. 73, Roy K6XK __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KPA1500 power supply noise
Hi Don, I hear nothing at all from my supply there or anywhere else so far. My power supply is under the table on a low stand, so is less than 3 feet from the K3s. Just FYI, but it seems I would hear something. 73,Roy K6XK Iowa I just received my new KPA1500 last Thursday. Ser. No. 316. I ordered it in Visalia on April 20. Tested it out on all bands and I am a very happy camper. I decided to place the power supply about 8 inches to the left of my K3 on a small shelf. I discovered that on 15 M, 21.020, I get a major switching power supply noise. The noise level as seen on my P3 goes up to S3. Has anyone else seen this? All the other bands are OK. I gave the amp a very good test during the IARU contest. Temp never got above 74 C. Fan comes on at 60. I received it with 01.63 firmware. Thanks, -- Don Minkoff NK6A __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] new owner looking for fuses.
One reason 'all fuses' aren't just rated at 250v to be done with it is that a shorter element section in a lower voltage fuse can have a lower resistance, due to the shorter arc gap allowed. Thus lower voltage drop for a low voltage circuit, etc. 73, RoyK6XK __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Vanity call question
"Many vanity calls are chosen because they are easier to copy, especially in the case of CW. My call is NOT an example of an "easy to copy on CW" call, having too many dahs and strings of dits causing the little short "e" to be missed. It is also NOT a vanity call." Right, some cw ops prefer a call without any dangling dots -- every letter beginning and ending with a single dash. For example, my call :-) 73, Roy K6XK __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Breakers for KPA1500?
The KPA1500 uses a regulated power supply: input 195 to 250 vac. Voltage loss in #12 wires is so small the regulator will laugh at that. 73, Roy K6XK "I would also suggest using three - #10 with ground as the line from the breakers to the amp operating position." 73 Bob, K4TAX On 7/9/2018 11:43 AM, Roy Koeppe wrote: Yes, that is what I am using. 73, Roy K6XK I probably missed this but my google searches aren't working either. Will 2x 20A breakers (220v) be sufficient for the KPA1500? __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Breakers for KPA1500?
Yes, that is what I am using. 73, Roy K6XK I probably missed this but my google searches aren't working either. Will 2x 20A breakers (220v) be sufficient for the KPA1500? __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] 6m and 10m openings
Right now in Iowa, S9 CW signals, mostly from W4-land (2 pm Central)... 73, RoyK6XK __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] KPA1500 Drive Power
Noone has responded to my previous inquiry about the KPA1500 power drop-off due to heat. I would like to know if the KPA1500 power output actually drops off due to heat build-up or because the SWR display was erroneously showing a power drop before it was fixed. Thanks, Roy Morris W4WFB __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] KPA1500 Drive Power
Does the KPA1500 drive power output actually drop off due to heat build-up or because the SWR display was erroneous before it was fixed. Thanks, Roy Morris W4WFB __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KPA1500 fan noises
About- "Take care in the application of added cooling efforts" Yes, but the proof is in the pudding; watching LEDs display the amp's temp, the readings are always cooler with the aux fans running. One reason is that between transmissions they continue running and reset the temp back to near ambient room temp instead of around 50C where the stock fans shut off. My operating is QSK rag-chewing, breaking back forth in round tables. Fans do remain off then nearly always. P.S...my 4.5-inch, 48-volt muffins cost a whopping $1.86 each! Guess no one wants 48V. If bearings wear out, so what. :-) 73, RoyK6XKIowa __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Will the KPA 1500 operate RTTY in "run mode" for 48hours?
Hi Mack, To my ears, very loud when speed gets up to #4 during a very long CW transmission. Roy K6XK -Original Message- From: Mack McCormick Sent: Tuesday, May 22, 2018 5:18 AM To: Elecraft Reflector Subject: [Elecraft] Will the KPA 1500 operate RTTY in "run mode" for 48hours? I have a complete K line with the KPA 500 currently. I am considering purchasing a KPA 1500. Will the KPA 1500 operate, *on all bands at legal limit*, while operating as a "run" station in a RTTY contest? That would be near continuous duty. How loud are the fans when operating in this mode? Thank you in advance for any information. Mack W4AX __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KPA1500 fan noises
"The benefit to putting fans in back blowing through the stock screen/fans is that you get the slight added benefit of over-pressuring the chassis which tends to keep the chassis interior cleaner. Assuming adequate rear spacing, you can hide the fans a bit more" Yes. and the ultimate is placing them remotely in the closet with a clothes dryer hose leading to that plenum sitting at the back air intake coupling. Care must be taken so as not to ever restrict air intake to the internal fans when they're running at max speed. Roy __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KPS1500 fan noises
"Do the KPA1500 fans push air into the box? If so, why doesn't the KPA500 fan do that. If the KPA1500 fans pull out of the box why would it be appropriate to use an additional fan that opposes this airflow?" Yes, they do...which is also opposite of airflow in K3s. The idea of the additional fans is that they are much more quiet than the built ins, even when they are on speed #1 . And they prevent the built ins from running so much or not at all. Simpleminded, I admit. Roy K6XK __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KPA1500 fan speeds and fan noise
Yes it does, normally air flow is from rear to top. The fans placed over the exhaust vent on top create a partial vacuum, drawing in air through the idle (or running) fans on the rear apron and out the top just like when the regular fans are doing that job. RoyK6XK "That doesn't move any air across the heat sink or solid state devices that need the air. The air that comes out of those vents starts at the fans in the rear." BillK3WJV On Monday, May 21, 2018, 6:07:22 AM EDT, Roy Koeppe <k...@ncn.net> wrote: All, My solution is two 4.5-inch, 48-volt dc muffin fans sitting on half-inch tall rubber feet covering the top exhaust vent on amp. They are running on a 19-volt supply at a slow but effective cooling speed and are very quiet (drawing air upward). During normal CW rag chewing the main fans do not come on -- a vast improvement for a few bucks. When you go portable, just leave 'em home. 73,RoyK6XK __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KPA1500 fan speeds and fan noise
All, My solution is two 4.5-inch, 48-volt dc muffin fans sitting on half-inch tall rubber feet covering the top exhaust vent on amp. They are running on a 19-volt supply at a slow but effective cooling speed and are very quiet (drawing air upward). During normal CW rag chewing the main fans do not come on -- a vast improvement for a few bucks. When you go portable, just leave 'em home. 73,Roy K6XK __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] My First Report KPA 1500
"...did notice an occasional flashing of yellow and red in the SWR led string. I watched my inline meter and it showed nothing during those bursts so something is going on there. (etc.)" This is common with the new amp. Elecraft is working on a firmware update to correct it -- hopefully. Just ignore flashing LEDs for now. 73, RoyK6XK __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KPA1500 S/N 160 delivered today
Bill, default setting is fan "0" -- then they remain off until needed as amp heats up with use. All automatically. So you hear no noise while you're just listening to receiver, etc. RoyK6XKIowa After having played with mine extensively last night, I was under the impression that the fans would come on automatically when the temp reached a certain degree.That is not the case. Mine was defaulted at fan speed zero, which is fans off. You have to change the menu item for fans to one of your liking. I had read a few postshere on the reflector about 2 being an acceptable number. I agree. If you crank it up to max (5) you might scare the dog, be careful, hi. BillK3WJV On Tuesday, May 15, 2018, 5:59:02 PM EDT, Roy Koeppe <k...@ncn.net> wrote: Works perfectly so far. The fans have never come on during my testing periods, including at full power. Power supply fans under the table are quiet. Really like! Low drive power. Was ordered 8-25-17 at 0900 CA time. 73, Roy K6XK __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] KPA1500 S/N 160 delivered today
Works perfectly so far. The fans have never come on during my testing periods, including at full power. Power supply fans under the table are quiet. Really like! Low drive power. Was ordered 8-25-17 at 0900 CA time. 73, Roy K6XK __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] First impressions of KPA1500 #113
Les, Possibly "power drift" in your antenna? Sometimes trap antennas have ceramic capacitors which drift under high power. Try a dummy load, etc. I think the SWR threshold point at which the auto tuner makes correction is adjustable in the amp. Try setting it up a little higher? Please let us know... 73, Roy K6XK -Original Message- From: Les Peters Sent: Thursday, May 10, 2018 8:39 PM To: Elecraft@mailman.qth.net Subject: [Elecraft] First impressions of KPA1500 #113 Arrived May 5th and setup was easy. I’m noticing periodically a momentary higher than normal SWR indication on the SWR bar graph. And I’m still trying to get used to the ATU. I’m experiencing the ATU having to make adjustments sometimes at the start of a transmission after the ATU has already been properly setup for the antenna and band. Is anyone else experiencing anything this or am I doing something wrong? Les, N1SV __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3 - PA- Temp
Picky, picky, Old slide rule with wide calibration marks -- good enuff for government use. 73, RoyK6XK -Original Message- From: ANDY DURBIN Sent: Tuesday, May 08, 2018 1:26 PM To: elecraft@mailman.qth.net Subject: [Elecraft] K3 - PA- Temp "46C = 118F" 46 deg C = 114.8 deg F. Maybe it was a typo? 73, Andy __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3 - PA- Temp
You're kidding of course -- 46C = 118F, which is a typical summer's day in the central valley in Calif. So sitting at a picnic table in the shade of a tree, with the K3 turned OFF is what the PA temp would be! That's super cool! 73, RoyK6XKIowa -Original Message- From: Ken Roberson via Elecraft Sent: Sunday, May 06, 2018 10:01 AM To: Elecraft Reflector Subject: [Elecraft] K3 - PA- Temp Hello all, I know its a little early, but i'm testing a delta loop for field day on 20 meters. The PA temp is running abt ( max ) 46 C @ 50 watts on FT-8 digi mode. Is this ok ? 73 Ken K5DNL __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KPA1500 Caution
Hi, My order online invoice for KPA1500 states shipping method: UPS. 73, RoyK6XK -Original Message- From: alapa...@w2cs.net Sent: Wednesday, April 18, 2018 5:17 PM To: elecraft Subject: [Elecraft] KPA1500 Caution I’m a day-2 KPA1500 patient waiter. I got the email 2 days ago and today it shipped. There’s one potential problem. It must have been mentioned on this reflector and I missed it. Elecraft used U.S. Postal Service (USPS) to send the amp cross-country. I have never had a good experience with USPS’ handling of package deliveries, particularly heavy (expensive) ones. If you care about the shipper, have the discussion with Elecraft up front. I should have. Good luck all. Gary W2CS __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3 apparent PA failure
VOX needs be ‘ON.’ Roy K6XK __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] power varying - KPA1500
Carl, I haven't seen any responses to your question -- have you determined anything further by now? Assume you're not using ALC hook up? 73,RoyK6XK "When running the KPA1500 at full power, sometimes the power will fluctuate. EXAMPLE: I was checking in to the Elecraft SSB net a little while ago. While transmitting, the power dropped to around 400W. This has happened on 20M CW as well. I wonder if the K3S output is dropping. (??). If I run at 500W or so, no problem." Carl Yaffey K8NU __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] momentary batt low
Rule #1: alus look for simple things foist Roy K6XK __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] OK, odd question
It is the "custom" for CW mode to use LSB on the bands below 20 meters and CW USB on 20 meters and the bands above it. Hiram Percey decided that long ago. 73, Roy K6XK I for one like the tuning direction of the Elecraft rigs in CW (LSB). When I began ham radio using much older receivers, I liked listening with the BFO set to LSB. My perception was "If the pitch goes up, I am tuning to a higher frequency". Those receivers did not have very good frequency resolution and it helped me in tuning correctly. I realize that is my preference, others like it the other way around. It is easy to set the Elecraft gear to CW reverse, and that is "sticky", so you only have to change it once for each band. It is a designer's choice, so I guess Wayne agrees with me because he made LSB CW the default. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Recomendations for paddles
Just my idea maybe...if you do not plan to squeeze key, then I think a single-lever version is superior. In simple terms, 'the finger piece can only be in one place at a time.' 73, Roy K6XK __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3s Scan Delay
"How I can set the scan delay when a signal is found?...(etc.)" Dang it, I thought I saw that once in Fred's book or the manual -- now cain't find it either. Will try again... 73, Roy K6XK __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Bounced emails
"received today a message, supposedly from the list mom, saying that I had "too many bounced emails" and that my membership in the list was being suspended." Try plain text and make sure if your pc has more than one email address, that it is set for the subscription address. 73, Roy K6XK __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KPA1500 (!)
'twas said, "...And thanks to the latest changes, hunt-and-pounce ops, like me, will almost never hear a fan come on." (etc.) GREAT 73, Roy K6XK __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] key out jack...
Here's what Pete originally stated: "...the jack appears to be shorted all the time...(etc.)" Think he has it right, but he's using a digital meter -- tricky. 73, Roy K6XK __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] OT headphone pads
Rumor had it in the AF that Navy radio ops used ladies' falsies glued to their cans for nice soft cushions. 73, RoyK6XK __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] What are the RF devices in the New 1500Watt KPA1500 Amp?
Two BLF188 73,RoyK6XK __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] Clever K3s cooling scheme?
Re all the fans postings, it appears my K3s uses convection cooling during light usage periods, drawing air in at the rear, backwards thru the idle fans, and out the top. When fans engage, air flow is reversed...drawn in thru the top and out the back. "Simplicity is ingenuity." 73, Roy K6XK __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KPA1500 back panel pic
About, "...Also, what type of connection is used for grounding?..." Looks like a full-sized banana plug jack? 73, Roy K6XK __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KPA1500 Enhancement
Re: Question: "Can the internal tuner be completely bypassed like the K3S can do with its tuner?" I see a bypass button on front panel. 73, Roy K6XK __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KPA1500 additional info
Was asked, " Do other amps make any concessions for 30 m? " Si, Si ... ALS-1300 has 30 m on its band switch. 73, Roy K6XK __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KPA500 vs new amp
"I note there are feet on the side which implies handles. This I haven't seen mentioned." (etc.) Even a BC-610 had handles! 73. RoyK6XK __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KPA 500 vs New 1500 watt amp
Aboot: "And the reason you "need" the extra 1000 W is that the others in the pileup are all running max power. A typical arms race, with tempers to match." Apparently none of you here ragchews on 80M CW roundtables at sunrise times during spring/summer thunderstorms seasons across the country! That's the reason QRO was born... 73, Roy K6XK Iowa __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] linear thots
About: ”...With two KPA500's one would have two radios with 500 W each, and when that little extra is needed, one could run both amp's in parallel from a single radio. Liftability would be very good! I know that is not a new idea, but implementing it seems a little messy. Might Elecraft consider offering special cabling and firmware to allow ...etc.” Ameritron sells a splitter and combiner for exactly that purpose, Look under ‘new products.’ Reasonable prices. 73, RoyK6XK __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] [OT] Question about power lines
Al, When transmitting, the current node does the 'work,' so I'd say it also does the main receiving job. But the difference in your situation might be small. Good luck & 73, RoyK6XK -Original Message- From: Al Lorona Sent: Friday, March 10, 2017 3:38 PM To: Elecraft Reflector Subject: [Elecraft] [OT] Question about power lines One leg of a horizontal antenna has to, unfortunately, run parallel to the power lines at the back of a city lot. Will there be more pickup of electrical noise if that leg has a current maximum, or a current minimum on it, along the portion of the antenna closest to the power lines? You can e-mail me privately to keep traffic down. Thanks, Al __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] 80 Meter Verticals
-Original Message- From: Wes Stewart Sent: Wednesday, March 01, 2017 8:27 AM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] 80 Meter Verticals No truth at all. Correct -- radiation resistance remains the same or even slightly lower -- lower Q. 73, RoyK6XK __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
