Re: [Elecraft] CM-500
I found it rather difficult to install replacement ear pads on the CM-500. It seemed I did not have enough hands to hold all the parts together when trying to align things and reinstall the 3 screws. This article "Replacement Ear Pads for the CM500 Headset" by - Mike N4CF in the May 2020 PVRC newsletter worked well for me: https://www.pvrc.org/Newsletters/2020_05.pdf 73, Paul K5ESW > I'd highly recommend Velour pads as opposed to OEM or equivalent that > start flaking way sooner than you expect. > I've put them on three different Sony MDR-7506 headphones. > They are much more comfortable and wear quite well (no pun intended). > > Poke around some. Velour pads are available for many brands. I'm sure > they're made for the CM-500's > > 73, Charlie k3ICH > > > > > -Original Message- > From: elecraft-boun...@mailman.qth.net > On Behalf Of Jim Brown Sent: Monday, > November 02, 2020 5:05 PM To: elecraft@mailman.qth.net Subject: Re: > [Elecraft] [OT] Broken boom mic attachment on a CM-500 > > On 11/2/2020 1:50 PM, Alan - G4GNX wrote: > > Unfortunately the ear pads are starting to deteriorate. Have you had > > to replace yours? > > No, and I've never seen much wear. > > > I read somewhere that new separate > > pads are not available. > > Right, they're not user replaceable, nor is the cable. > > The earpads for my Sony MDR7506 phones are user replaceable, but the > cable is not. I've owned several sets of them that I've used for many > years, and never had a problem with the cord, but I did buy a set for $5 > at a ham flea market with a bad cable. :) > > Some of the German headphones have user replaceable cables, especially > those used for stage intercom and by broadcasters, but they're not > nearly as comfortable, don't sound nearly as good, and are fairly > exp0ensive. Beyer, AKG, and Sennheiser make some very nice phones -- > they're first rate manufacturers. I have a pair of Beyer DT880Pro that I > like for listening to acoustic music, mostly jazz. > > 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 > Message delivered to pin...@erols.com > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to p...@paulferguson.us __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 USB cable
Art, The USB cable needs a Type-A connector on one end and a Type-B connector on the other end. 73, Paul K5ESW > Is the USB A to B cable needed for the connection to the Utility a > standard USB or USB 2? I need to order a longer one to accommodate > where the amp will be placed relative to the computer. > > > Thanks. > > > Art KZ5D > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto: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 p...@paulferguson.us __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 test mode
Occasionally I accidentally turn a key press into a hold. A user defined time constant for hold would be a nice option for all who want a shorter or longer hold time. 73, Paul K5ESW A user defined longer time constant for PRESS functions would be a great help. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 button problem question
Thanks to Harry, WE1X, for letting me know of a similar button problem he had. It is most likely my problem is not caused by the components I suspected, but rather by the failure of the switch inside the encoder for Speed/Mic. I was thinking only of the rubber-covered buttons, which cannot result in a ground out. However the four encoders containing push switches can fail by putting a ground out to a scan line. There were a few failures on early encoders, and Elecraft now uses encoders from a different source. I sent my front panel board back for repair. 73, Paul K5ESW Seven of my front panel buttons do not function on K3 #757. I also used the Switch Test to see that they give no scan codes. All other buttons work OK. Looking at the the schematic for the Front Panel - Switches I see these seven buttons are all connected to the SCANADC0 line into U3. I took off the front panel and put an ohmmeter from ground to the SCANADC0 line, and it gives a few ohms. The other lines (SCANADC1-7) show as open. I looks like either U3, C30, or R27 is bad. Does anyone see any other possibilities? I don't relish replacing U3 since it is a 16-pin IC. Maybe some Chip-Quik or tiny cutters to snip the leads would ease the job. 73, Paul K5ESW __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] K3 button problem question
Seven of my front panel buttons do not function on K3 #757. I also used the Switch Test to see that they give no scan codes. All other buttons work OK. Looking at the the schematic for the Front Panel - Switches I see these seven buttons are all connected to the SCANADC0 line into U3. I took off the front panel and put an ohmmeter from ground to the SCANADC0 line, and it gives a few ohms. The other lines (SCANADC1-7) show as open. I looks like either U3, C30, or R27 is bad. Does anyone see any other possibilities? I don't relish replacing U3 since it is a 16-pin IC. Maybe some Chip-Quik or tiny cutters to snip the leads would ease the job. 73, Paul K5ESW __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] K3 Check Your Buttons
I own K3 #757 and recently noticed some of the front panel buttons were not working. They either did not work at all or gave strange results. I contacted support, and they advised me to use the Config Menu SW Test to check all buttons. If you have not tried it, go to Config Menu, rotate VFO B until the SW test entry is selected. Rotate VFO A until Sca Adc is selected. Now press every button, one at a time, except the Power button. When you press and hold a button, you will see the button´s row and column codes displayed as a single digit followed by 3 digits. As you hold each button pressed, the code should remain stable. Note the Band and Mode buttons have different codes for pressing the left or right sides. Also the 4 encoders to the left of VFO A (Shift, Width, Speed/Mic, Cmp/Pwr) have scan codes when pressed. When I tried the test, some of my buttons produced flickering codes or code values jumping around. Support advised me to push the suspect buttons down firmly and move my fingertip around as I pressed down. This seemed to help, but I am still showing a few problems. I checked with a friend owning a K3. He tested his buttons and found the last digit of Fine and Rate flicker. Support said a slight flicker of 1-2 digits is OK. Most of them should be steady at one reading. My K3 is out of warranty. Options are buying a new Front Panel board at about $400 or sending the Front Panel to Elecraft for repair at the standard hourly rate. I am going to monitor the problem for a while and see if there is some pattern to the failures. You may want to test all your buttons. I had never tested them before and I might have noticed a problem before the warranty expired. It is also a good idea to test the buttons when you think you are chasing a different problem. My original symptom was the RX button would not switch to the receive antenna. I even tried reloading the firmware before realizing multiple buttons were not working. 73, Paul K5ESW __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 Audio Level and Heil Pro Set
I would like to see this added to the Config Menu. I have low volume on headphones, and a few doses of this command fixes it. I was going to contact Elecraft support about it, but now I will wait for it to be added. Paul K5ESW K3 #757 Hi again Pete: I forgot to mention something in my previous posting. Lyle gave me a command to send via the K3 Utility to temporarily increase the headphone volume. The premise being that if this proved satisfactory then it would be possible to include such a volume adjustment in firmware (if enough people want it). Open the K3 Utility and choose Command Tester. Enter the following code on the top line and hit enter !66; Be sure to include all 4 characters. You can do this several times and the volume will increase slightly each time. Unfortunately, it is not remembered if you cycle power. 73, Mike K2MK Peter Chamalian Sun, 02 Aug 2009 14:06:06 -0700 I've been enjoying my K3 but find the audio output in my Heil Pro Set is rather weak. Is there a mismatch here or some setting that will boost the audio level? Just for the record, I hae the latest production release firmware, speaker + phones is no. Thanks, Pete, W1RM __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] Question on KRX3 Installation
In errata C-7 dated March 15, 2009, page 1, there are instructions to cut two traces in the area to the right of D40 on the RF board. Shouldn't the above change be a mod mentioned on the K3 Enhancements and Application Notes info maintained on the Elecraft Website? I installed the KRX3 before the errata was issued. I used the mods page to update my K3, but missed the change because it is not on the mods page. Paul K5ESW __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 Load fails
Dick, Sorry, I gave you the error message when I tried to go back to 3.14. The proper files seem to be in each folder. When I try to load 3.19, I get: - FPF firmware file hfpf0101.hex verified Erasing flash memory Sending firmware file hfpf0101.hex to FPF Send FPF firmware failed at load address x0300 GetLastError returns 0xe212 NACK retry limit has been exhausted state 30 FPF firmware load failed Files in my 3.19 folder: DTBL0009.HEX HAUX0217.HEX HDSP0217.HEX hfpf0101.hex hfwnotes.rtf hmcu0319.hex Files in my 3.14 folder: DTBL0009.HEX HAUX0216.HEX HDSP0216.HEX hfpf0100.hex hfwnotes.rtf hmcu0314.hex Additional info -- this morning one attempt did get past the FPF load although there were some retry and fill messsages. The load then failed on DSP2: - DSP2 firmware file TBOOT7.HEX verified DSP2 firmware file HAUX0217.HEX verified DSP2 firmware file DTBL0009.HEX verified Sending firmware file TBOOT7.HEX to DSP2 GetLastError returns 0xe213 K3 is not responding state 30 DSP2 firmware load failed - I retried and did not get past the FPF load. Should I contact K3 support? 73, Paul K5ESW What files are in your firmware folder that contains MCU revision 3.19? It should have hfpf0101.hex as well as hmcu0319.hex, hdsp0217.hex, haux0217.hex, dtbl0009.hex and tboot7.hex. The fact that your error message says it's trying to load hfpf0100 (.hex) suggests that you've got hmcu0319.hex and hfpf0100.hex but not hfpf0101.hex in the firmware folder you're loading from. You need the most recent hfpf0101.hex in the same firmware folder that you are loading MCU version 3.19 from. This is what I mean by mixing. The beta firmware zip firmware file contains a complete set of firmware files. All those files need to be in the firmware folder you're loading from. Dick, K6KR __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 Load fails
Dick, Thanks. You were correct about the problem. I have a short (3 ft) extender cable connected to the KUSB cable. The junction between the two was slightly loose. I tightened it and loaded OK. I suspected the K3 because the MCU load always worked. It must be that the FPF load exercised the data lines differently enough to show up the problem. Thanks to you and others for the help. 73, Paul K5ESW It sounds like you can eventually load, although there is evidence of substantial communications corruption. What sort of cable do you use between the PC and the K3? USB? Hubs involved? Is it screwed down at the K3 end? If you have alternate cables available, could you try one of those? If you have several USB ports on your computer, could you try a different one? Dick, K6KR __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] K3 Load fails
I have K3 #757. It was running fine on firmware 3.14. I tried to load the 3.19 Beta version. The MCU load completed OK. It then failed on the FPF load with the following messages: --- FPF firmware file hfpf0100.hex verified Erasing flash memory Sending firmware file hfpf0100.hex to FPF Send FPF firmware failed at load address x03C0 GetLastError returns 0xe212 NACK retry limit has been exhausted state 30 FPF firmware load failed --- I powered off and tried again with the same results. I downloaded 3.19 again and got the same results. I then tried several times to reload my saved version 3.14, but got the same error. The load address location is varies. I have seen x03C0, x0380, and x0350. I am using Elecraft Utility ver 1.2.3.18 on Windows XP with the Elecraft USB to RS232 cable. Any idea what to do next? 73, Paul K5ESW __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 Load fails
The driver I am using seems to be the latest. Device Manager says: Prolific 9/30/2008 version 2.0.4.102 The sequence is always the same -- MCU Load completes and FPF load fails with the error I posted. I have the second receiver installed, but the load process does not get that far. I have been thru 10-20 firmware upgrades with no errors in the past. 73, Paul K5ESW Do you have the upgraded drivers for the USB/serial converter? 73, Guy. - Original Message - From: Paul Ferguson p...@paulferguson.us To: elecraft@mailman.qth.net Sent: Thursday, June 18, 2009 9:05 PM Subject: [Elecraft] K3 Load fails I have K3 #757. It was running fine on firmware 3.14. I tried to load the 3.19 Beta version. The MCU load completed OK. It then failed on the FPF load with the following messages: --- FPF firmware file hfpf0100.hex verified Erasing flash memory Sending firmware file hfpf0100.hex to FPF Send FPF firmware failed at load address x03C0 GetLastError returns 0xe212 NACK retry limit has been exhausted state 30 FPF firmware load failed --- I powered off and tried again with the same results. I downloaded 3.19 again and got the same results. I then tried several times to reload my saved version 3.14, but got the same error. The load address location is varies. I have seen x03C0, x0380, and x0350. I am using Elecraft Utility ver 1.2.3.18 on Windows XP with the Elecraft USB to RS232 cable. Any idea what to do next? 73, Paul K5ESW __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] K3 Load fails
I don't think I am mixing anything. I have a folder for 3.14 and one for the new Beta 3.19. When I get ready to do a load, I see what is now installed in my K3 before I Send All Firmware to K3. After trying to load 3.19 it says Installed in the K3: MCU = 03.19, FPF = N/A, DSP1 = 02.16, DSP2 = 0219, DVR = 01.03. Available: MCU = 03.19, FPF = 01.01, DSP1 = 02.17, DSP2 = 02.17. This seems to be what would be expected if the load failed and my I previously had a good 3.14 firmware load. When I try to reload from my 3.14 folder, I end with MCU = 03.14 and FPF = N/A. This seems what I would expect if the MCU load works and the FPF load aborts. 73, Paul As I recall there is a new FPF version that you may need to put into the same firmware folder as your new MCU version. Dint try to mix... Dick, K6KR Sent from my iPhone On Jun 18, 2009, at 6:05 PM, Paul Ferguson p...@paulferguson.us wrote: I have K3 #757. It was running fine on firmware 3.14. I tried to load the 3.19 Beta version. The MCU load completed OK. It then failed on the FPF load with the following messages: --- FPF firmware file hfpf0100.hex verified Erasing flash memory Sending firmware file hfpf0100.hex to FPF Send FPF firmware failed at load address x03C0 GetLastError returns 0xe212 NACK retry limit has been exhausted state 30 FPF firmware load failed --- I powered off and tried again with the same results. I downloaded 3.19 again and got the same results. I then tried several times to reload my saved version 3.14, but got the same error. The load address location is varies. I have seen x03C0, x0380, and x0350. I am using Elecraft Utility ver 1.2.3.18 on Windows XP with the Elecraft USB to RS232 cable. Any idea what to do next? 73, Paul K5ESW __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] K3 Banner not working
I loaded the new K3 firmware (2.78/1.98) and the new K3 utility 1.2.1.6. I click on the utility Configuration Edit Power On Banner, type some characters, and click Save. When I power my K3 (#757) off and on, I do not see the Banner characters on the K3 LCD. The LCD is blank for a couple of seconds then show the frequency. I have tried with different text and with asking the K3 Utility to Save Configuration. What step am I missing? 73, Paul K5ESW ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K3 Banner not working
Merv, Thanks. You are right -- I was expecting it on the LCD in the first few seconds and not in the VFO B space. 73, Paul K5ESW Paul, dumb question but are you looking at VFO B readout area or looking for the banner on the whole screen? The banner is just scrolled in small letters on the VFO B read out space. Merv KH7C I loaded the new K3 firmware (2.78/1.98) and the new K3 utility 1.2.1.6. I click on the utility Configuration Edit Power On Banner, type some characters, and click Save. When I power my K3 (#757) off and on, I do not see the Banner characters on the K3 LCD. The LCD is blank for a couple of seconds then show the frequency. I have tried with different text and with asking the K3 Utility to Save Configuration. What step am I missing? 73, Paul K5ESW ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] K3: Error in KRX3 installation instructions?
I am in the middle of installing my KRX3 and came to a point where I do not have enough of the correct screws remaining. I am using KRX3 Installation and Operation manual Rev B (Aug 20, 2008) and Errata Rev B-2 (Sep 30, 2008). My inventory matched the manual as modified by the Errata. I might have used the wrong screws somewhere, so I went back thru the steps keeping track of what the steps say I should have used. I came to a problem on page 31, step 2. It calls for two 4-40 3/16 zinc pan head screws. The inventory does not list any of the above screws. There are zinc pan head 4-40, 1/4 and black pan head 4-40 3/16 screws. I do not know if I used zinc 1/4 or black 3/16 during this step. What should this step say? Paul Ferguson ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] 500 Hz filter measurement?
W4ZV wrote: You only need the two -6 dB points, which can be measured to a resolution of 1 Hz and 0.1 dB using the internal AFV/dBV function. You should set AGC Off and ensure WIDTH (i.e. the DSP BW) is than the filter you are measuring...otherwise you're measuring the combination of XFIL plus DSP. I do this by disabling all filters except the one under test and setting WIDTH XFIL BW. Once you have the two -6 dB points, then you can figure how much offset to enter so these two points are equidistant about the center. I used the above procedure to test my 500 Hz filter. The offset printed on the filter is -0.82 kHz. Testing shows the center frequency to be about 43 Hz low when using the above offset. I put -0.78 KHz in the filter configuration, and it tests centered now. The -6 dB bandwidth measured about 480 Hz. I have seen the nominal -6dB bandwidth of the 500 Hz filter listed as 565 Hz. When I am measuring the bandwidth, I have the DSP bandwidth set to 2.8 KHz. Since the DSP filter is fairly wide, I would not expect the cascading to have much affect on the Xtal filter bandwidth measurement. Is it likely my Xtal filter is as narrow as measurement shows or is it more likely something is wrong with my testing? Here is info about the test setup: PITCH = 600 AGC = off Mode = CW Only 500 Hz filter enabled 500 HZ filter Offset set to -0.82 KHz DSP BW = 2.80 RX EQ = reset to 0 for all EQ bands Center freq on K3 determined using CWT and Spot Sig source = HP sig generator at 50 microvolts 73, Paul Ferguson K5ESW Raleigh, NC ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] Problems using a QRO amp with the K3
I have a QRO Technologies HF-2000 amp. I am keying it with a K3 thru the amp's +15V Key Xmit input port, but I have a homebrew transistor circuit between the K3 and the amp to supply +12V to this input. The other amp keying port is called Key Xmit. It needs only a contact closure able to handle 80ma. However the open circuit voltage measured at this port is about 150V. When I had a different transceiver, I was concerned about the high open circuit voltage. I built the interface to allow use the +15V Key Xmit port and avoid any damage to the transceiver relay. Maybe this high open circuit voltage is the cause of the problem with the K3 trying to key the amp? 73, Paul K5ESW Anyone out there using a QRO with the K3? I can't seem to get the amp working with the K3. I have previously used the amp with the 480HX, 1000MP and 706 MIIG. I am using the key out circuit on the back which does activate the relay in the amp but when I release the ptt, the amp stays in transmit and will not release. Before I did use the ALC circuit with the amp but I have been told I do not need to use an ALC circuit with the K3. Do I need a separate t/r relay between the radio and the amp? Is there some other menu item I have overlooked? Any help will be appreciated. 73, Richard N4WDU -- View this message in context: http://n2.nabble.com/Problems-using-a-QRO-amp-with-the-K3-tp524929p524929.html Sent from the Elecraft mailing list archive at Nabble.com. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] ERR TXG and power problems
I have K3/100 #757 using firmware 1.94 MCU and 1.73 DSP. I have been getting an ERR TXG message when trying the Transmitter Gain Low- Power Calibration on most bands. 80 meters was OK and 20 meters sometimes was OK. I noticed my external power meter was showing 10 watts output while the K3 power read only 2 watts. This caused me to go back to the K3 Low-Power Wattmeter Calibration procedure. In this procedure I was only able to adjust the power shown on my external meter to about 9 watts when the K3 showed 5 watts. The WMTR LP parameter value shown in the VFO A slot ended up at its maximum value of 180. I redid the LP Transmitter Gain Calibration on all bands without any ERR TXG messages. So far so good except for my K3 saying 5 watts out and my meter saying 9 watts. Next I try the High Power TX Gain Calibration. I get ERR TXG messages, so I take a look at my external power meter as I increase power. As the K3 changes from 12 to 13 watts, I hear the KPA3 relay click, and my external power meter shows power suddenly jumps from about 15 watts to 40 watts. Increasing K3 power more gets me 100 watts out while the K3 is showing only 20 watts. I then try the High Power Wattmeter Calibration. K3 is set to 50 watts. My external meter shows 120 watts, but adjusting the menu parameter does not reduce power. I am using two different external power meters. One is a QRP meter and goes to 10 watts max. The other has a 200-watt scale. They both have seemed fairly accurate from using them with other rigs. Any ideas on how to fix this problem? 73, Paul K5ESW ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] K3 ERR TXG message on most bands
I have K3/100 #757 using firmware 1.88 MCU and 1.70 DSP. When trying the Low-Power (5W) Transmitter Gain Calibration, it works on 80 and 20 meters, but on all other bands I get an ERR TXG message. The Synthesizer Calibration and Reference Oscillator Calibration (using WWV zero beat) run OK. I have checked that I have my two filters (500 and 2.7) setup properly. I have been thru the filter bandwidth, freq center, receive filter enables, and transmit filter selections several times. Any ideas what the problem might be? 73, Paul K5ESW ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] K3 #757 arrives
My K3/100 kit #757 arrived today and assembly has started. Ordered: Nov 7 Katie-gram: Apr 16 Shipped UPS ground: Apr 21 Delivered: Apr 28 73, Paul - K5ESW Raleigh, NC ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] K3 Katie-gram received for Nov 7 order
My Katie-gram arrived today for the K3/100 kit. It was ordered Nov 7 and is scheduled to ship in 7-10 days. Backordered items: 1.8 filter, DVR, and 2nd Rcvr 73, Paul K5ESW Raleigh, NC ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] K3 KXV3 mods?
There was going to be a change to the KXV3 RX Ant I/O and Transverter card to increase protection from RF. The change was going to be cut into production and a future mod kit offered to owners not having the change. I have a K3 ordered and am considering adding the KXV3 option. Has the mod been made already in units now being shipped? If not, I will wait and order it after the change is included in the boards being shipped. 73, Paul K5ESW ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K3-Latest K3 Review on EHAM
The reviewer (Solardx) gives the results of a test he ran on his K3. Surely there are others out there with a K3 and the equipment necessary to repeat his tests. The outcome of the tests will determine if Solardx's results are typical. I await the results while I wait for my K3 (wave 3). 73, Paul K5ESW ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] K3 Filters for the 2nd receiver?
I plan to use a K3 primarily for DXing. I want the second receiver option so I can listen for clear spots and stations working the DX in split operations. For this usage, can you see any reasons to add additional filters to the second receiver? 73, Paul K5ESW ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K3 Accessory Connector
but much more than reliability is the issue of USE-ABILITY. The K3 is a field radio and under the most remote and demanding condx, anderson Powerpole and these D thingies are the first frustrations UNLESS For those who think the D and Anderson connectors are such a big problem, why not just make up a set of short cables. On one end attach the mating connectors required for the K3. On the other end, attach the connector meeting your requirement. Paul K5ESW ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
