Re: [Elecraft] XKeys Software Support for K2 / K3
Would someone please post some more info about this, like web site of unit etc? I think I must have missed any original post. I found http://www.piengineering.com/xkeys/xkpro.php which might be the keypad, but nothing about the interface or software. TIA 73 de M0XDF, K3 #174 -- The universe is like a safe to which there is a combination. But the combination is locked up in the safe. -Peter De Vries, editor, novelist (1910-1993) On 7 Jan 2009, at 03:08, K8TB wrote: Mike and others: It really is impressive to have this box along side the K3. Mike, I finally figured out how to program it, and I can write up a step by step install guide. But to the others, programming the software that Mike has is really rather easy. Any button can be used for any function. I like 6 meters a lot, so I have about 4 frequencies dialed in, each with their own button. Another button brings me to 14.070, data mode, for PSK use. If I get time, I may post some pictures of the box on my website. But I will guarantee you, 58 keys is a lot, and they can do anything the K3 can receive via the rs-232 port. tom K8TB ___ 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] XKeys Software Support for K2 / K3
That's the right site. Try 'Support', 'X-keys Support' and then 'X-keys Macroworks II (for PC)' for lots of information. The Mac link probably does the same, in pastel colours ;-) These look to be useful units but it seems to me that all they do is generate macros that can be programmed into the main computer. 73, Pete F5VNB David Ferrington, M0XDF wrote: Would someone please post some more info about this, like web site of unit etc? I think I must have missed any original post. I found http://www.piengineering.com/xkeys/xkpro.php which might be the keypad, but nothing about the interface or software. TIA 73 de M0XDF, K3 #174 -- The universe is like a safe to which there is a combination. But the combination is locked up in the safe. -Peter De Vries, editor, novelist (1910-1993) On 7 Jan 2009, at 03:08, K8TB wrote: Mike and others: It really is impressive to have this box along side the K3. Mike, I finally figured out how to program it, and I can write up a step by step install guide. But to the others, programming the software that Mike has is really rather easy. Any button can be used for any function. I like 6 meters a lot, so I have about 4 frequencies dialed in, each with their own button. Another button brings me to 14.070, data mode, for PSK use. If I get time, I may post some pictures of the box on my website. But I will guarantee you, 58 keys is a lot, and they can do anything the K3 can receive via the rs-232 port. tom K8TB ___ 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
Re: [Elecraft] Mildly confused - Assumed filter width and what I see in waterfall do not match
This is what has disturbed me - I have turned on ESSB (set to 4 khz), and I have selected the 6 khz filter, but in no case do I get 4 khz in any mode. specifically, in Data A with DSP set wide open at 4 khz, the waterfall always cuts off at 3500 hz in any software I use. I do not understand why I cannot get the full 4 khz bandwidth. The firmware is at 2.67, DSP at 1.96. Does anyone see 4khz in the waterfall, and with the ability to xmit across the range? --- On Wed, 1/7/09, Joe Subich, W4TV li...@subich.com wrote: From: Joe Subich, W4TV li...@subich.com Subject: RE: [Elecraft] Mildly confused - Assumed filter width and what I see in waterfall do not match To: w...@q.com, t...@yahoo.com Cc: elecraft@mailman.qth.net Date: Wednesday, January 7, 2009, 12:59 AM I tried to set the USB filter bandwidth to use the 6 KHz, but whenever I tried to XMIT I got an error. Apparently the widest filter permitted for SSB XMIT is 2.7 KHz, and this setting also somehow restricts the receive filter capability also. The only filters permitted for SSB transmit are 2.7 or 2.8 Khz (unless you have enabled ESSB). I had the same basic idea, but to use the 6 kHz wide flter for receive in USB mode for use with the wide bandwidth setting of WSJT, to be able to search a wider bandwidth for callers on EME. The maximum bandwidth permitted in data modes (or USB/LSB) is 4.0 KHz even with a 6 KHz filter. The DSP is limited to a 4200 Hz high frequency cutoff in all modes except CW where the maximum frequency is about 2400 Hz. 73, ... Joe, W4TV -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Lance Collister Sent: Tuesday, January 06, 2009 10:22 AM To: t...@yahoo.com Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] Mildly confused - Assumed filter width and what I see in waterfall do not match Thomas Bingenheimer wrote: I have been using several programs (Cocoamodem, mostly) to do PSK31, via Data A. Instead of being able to use the full 4khz waterfall bandwidth available in, say, Cocoamodem, I have been limited to the available width in the only filter I had in the rig, the 2.7 khz 5-pole appeared to limit me to about 2.7 khz. So, I added the 6 khz filter, set it up for SSB (and enable ESSB, 4.0 khz). I now show 3 khz (500 to 3500 hz) in the waterfall. I suspect I have overlooked something, but it is not clear to me what. Does anybody have any idea? Thanks! ___ 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 Hello Tom, I had the same basic idea, but to use the 6 kHz wide flter for receive in USB mode for use with the wide bandwidth setting of WSJT, to be able to search a wider bandwidth for callers on EME. I tried to set the USB filter bandwidth to use the 6 KHz, but whenever I tried to XMIT I got an error. Apparently the widest filter permitted for SSB XMIT is 2.7 KHz, and this setting also somehow restricts the receive filter capability also. I have not figured it out yet for sure, but it seems that there currently is no way to open up the width of the receiver in USB past 4 kHz :-( It would sure be more flexible if there turns out to be some way to permit wider filter possibilities in receive! Please let me know if you discover some way to do this - I am sure there are others besides us who also would be interested in this option! TNX and GL! VY 73, Lance -- Lance Collister, W7GJ (ex: WN3GPL, WA3GPL, WA1JXN, WA1JXN/C6A, ZF2OC/ZF8) P.O. Box 73 Frenchtown, MT 59834 USA QTH: DN27UB TEL: (406) 626-5728 URL: http://www.bigskyspaces.com/w7gj 2m DXCC #11, 6m DXCC #815 ___ 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
Re: [Elecraft] Filters
I am thinking about a K3 for RTTY. What do you think the best filter configuration should be. Here is the post I made to the RTTY reflector yesterday in response to the same question ... I'm considering purchasing a K3. Which filter do I want for RTTY (both DX contesting)? 200 Hz 5-pole or 250 Hz 8-pole? Or is there some other configuration I should consider? Between those two, the so-called 250 Hz 8-pole filter. Some things to consider: 1. The primary IF filtering the K3 is done via the continuously adjustable DSP. The crystal filters in the K3 are designed to be wider than the DSP filter bandwidth to protect the DSP from very strong signals nearby that would otherwise keep the DSP from doing its job. Don't think of the K3 crystal filters like IF filters in older radios. They are more like roofing filters which used to be on the order of 15 kHz and in modern radios are going down into CW bandwidth. Still, their purpose is to protect the DSP, not be the radio's only filter. 2. The 200 Hz 5-pole filter is about 224 Hz wide. The 250 Hz 8-pole filter is nominally 370 Hz wide. The 400 Hz 8-pole filter is 435 Hz wide. The 500 Hz 5-pole is about 530 Hz. Any of the three widest filters are great for RTTY. They are essentially the same for the purpose they are intended. 3. Generally, 300 Hz is a good bandwidth for completely passing a 170 Hz shift RTTY signal, assuming you are centered in it. Operationally, I've found that a 200 Hz bandwidth works great in huge pile-ups because it passes the fewest signals that are still good enough for the decoders. Yes, the outer skirts of the two frequencies are rolled off, but the trade-off is less signals presented to the decoders, assuming they are not all perfectly zero-beat. Turns out to be a net win in heavy pile-up conditions. 4. The DSP filter is used to vary between 300 and 200 Hz as conditions warrant. If you use the Dual-Tone Filter, also a DSP constructed filter, it effectively narrows the bandwidth to about 200 Hz anyway, regardless of where you set the main DSP filter. I operated the entire Round-Up with a 370 Hz crystal filter (marketed as 250 Hz 8-pole), 300 Hz DSP and the DTF. So my effective bandwidth in both K3s was about 200 Hz and it was protected by a 370 Hz roofer. If the pileups had been smaller (no thanks!) or if I had the opportunity to tune around more (running both radios is good when you can do it), then I would have possibly turned off the DTF and used a 300 Hz bandwidth. But, even the limited tuning around I did do, was not hampered by the 200 Hz filtering. Ed - P49X (W0YK) ___ 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] Six meter birdies.
Wes Stewart N7WS wrote: I'm still playing with my new K3 and finally got around to listening on 6-meters. There are so many birdies as to make it unusable. At first I thought they might be external, and some were generated in my Lenovo laptop, but shutting it down and terminating the K3 antenna port with a load doesn't eliminate them. When listening to the same frequencies with an Icom IC-R10 with a whip antenna next to the K3 I don't hear a thing. Ideas? Wes N7WS -- Wes, From what you have said these birdies are being generated inside the K3, if I am right to assume that only the power supply and nothing else except the dummy antenna load is connected to your K3, and that turning your Icom IC-R10 on or off makes no difference to any birdies' level or frequency. I do wonder if you have a fault in your K3 when you say 'so many birdies', I get the impression that something is unstable on 6m but perhaps not on the lower frequency bands. There might be a poor solder connection to a bypass capacitor for example, which could result in problems on 6m but not on the lower frequency bands certainly if two or more capacitors are used in parallel,or some SMD capacitor has failed due to mechanical stress. It might be worthwhile to troubleshoot. Some of these internal birdies that you are hearing are probably legitimate members of the birdie family created by the receiver's spurious response(s) hearing one or more of the receiver's oscillators, or their products. The frequency of these birdies can be predicted and their level can vary greatly between identical receivers, also the routing of internal cables can become fussy if shielding is inadequate or RF grounds 'float'. However this latter issue is best left to the designer. 73, Geoff GM4ESD ___ 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] Mildly confused - Assumed filter width and what I see in waterfall do not match
A day or two ago I mentioned something about an difficulty getting ESSB to work when using the Elecraft Configuration software. I was suggested to look at the release notes in the utility. The utility has no search feature so I highlighted all the text in the release notes (under Help K3 Firmware Release Notes) and used Ctrl C to copy the test to a new test file. Starting at the top searching for ESSB I found where it was enabled and lower, under update 2.23 I found the following: (1) Make sure the 6 kHz filter is configured correctly for AM transmit; switch to AM mode, then specify this filter using CONFIG:FLTX AM. (A future firmware release should allow use of the FM filter for SSB as well, pending lab tests.) (2) Locate CONFIG:TX ESSB. Select the desired extended bandwidth for SSB transmit (3.0 to 4.0 kHz) using VFO A. Then tap `1´ on the keypad to turn ESSB on/off. When on, the + icon in the mode area will turn on. (If you turn ESSB on/off frequently, you might want to assign the TX ESSB menu entry to a programmable function switch.) I had to set up ESSB separately from the Edit Crystal Filters by doing the above but it indeed works. 73, Gary KA1J This is what has disturbed me - I have turned on ESSB (set to 4 khz), and I have selected the 6 khz filter, but in no case do I get 4 khz in any mode. specifically, in Data A with DSP set wide open at 4 khz, the waterfall always cuts off at 3500 hz in any software I use. I do not understand why I cannot get the full 4 khz bandwidth. The firmware is at 2.67, DSP at 1.96. Does anyone see 4khz in the waterfall, and with the ability to xmit across the range? --- On Wed, 1/7/09, Joe Subich, W4TV li...@subich.com wrote: From: Joe Subich, W4TV li...@subich.com Subject: RE: [Elecraft] Mildly confused - Assumed filter width and what I see in waterfall do not match To: w...@q.com, t...@yahoo.com Cc: elecraft@mailman.qth.net Date: Wednesday, January 7, 2009, 12:59 AM I tried to set the USB filter bandwidth to use the 6 KHz, but whenever I tried to XMIT I got an error. Apparently the widest filter permitted for SSB XMIT is 2.7 KHz, and this setting also somehow restricts the receive filter capability also. The only filters permitted for SSB transmit are 2.7 or 2.8 Khz (unless you have enabled ESSB). I had the same basic idea, but to use the 6 kHz wide flter for receive in USB mode for use with the wide bandwidth setting of WSJT, to be able to search a wider bandwidth for callers on EME. The maximum bandwidth permitted in data modes (or USB/LSB) is 4.0 KHz even with a 6 KHz filter. The DSP is limited to a 4200 Hz high frequency cutoff in all modes except CW where the maximum frequency is about 2400 Hz. 73, ... Joe, W4TV -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Lance Collister Sent: Tuesday, January 06, 2009 10:22 AM To: t...@yahoo.com Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] Mildly confused - Assumed filter width and what I see in waterfall do not match Thomas Bingenheimer wrote: I have been using several programs (Cocoamodem, mostly) to do PSK31, via Data A. Instead of being able to use the full 4khz waterfall bandwidth available in, say, Cocoamodem, I have been limited to the available width in the only filter I had in the rig, the 2.7 khz 5-pole appeared to limit me to about 2.7 khz. So, I added the 6 khz filter, set it up for SSB (and enable ESSB, 4.0 khz). I now show 3 khz (500 to 3500 hz) in the waterfall. I suspect I have overlooked something, but it is not clear to me what. Does anybody have any idea? Thanks! ___ 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 Hello Tom, I had the same basic idea, but to use the 6 kHz wide flter for receive in USB mode for use with the wide bandwidth setting of WSJT, to be able to search a wider bandwidth for callers on EME. I tried to set the USB filter bandwidth to use the 6 KHz, but whenever I tried to XMIT I got an error. Apparently the widest filter permitted for SSB XMIT is 2.7 KHz, and this setting also somehow restricts the receive filter capability also. I have not figured it out yet for sure, but it seems that there currently is no way to open up the width of the receiver in USB past 4 kHz :-( It would sure be more
Re: [Elecraft] K2 PLL reference oscillator range is zero
Dave, Your measurement on SCK is correct - the manual is wrong for that one. If you look at it with a 'scope, you will see negative going pulses when the clock is active (turn the VFO knob to generate a few pulses. I believe your problem is with the /DAC2CS signal which I just verified as 5 volts when measured as a DC signal, but like the SCK signal has negative going pulses when the VFO knob is turned. Since your K2 /DAC2CS is at zero volts, the DAC is being gated for data-in at all times, so when the data is not being clocked to the DAC, it thinks the data bits in the data stream are all inactive, and the analog output goes to zero volts. Your readings at U6 pins 33 and 38 are in the range of normal readings. Pin 38 is active positive and is normally low with frequent positive going pulses, so the DC voltage measured can vary depending on the time constant of the meter used, and pin 33 is also active high, being normally low and having less frequent positive pulses than those on pin 38 - so its DC average voltage will be less than that on pin 38 - how much depends on your meter. I don't know if your digital skill level was adequate to follow all of that explanation, but the bottom line is that something is not working between the microprocessor (Control Board U6) pin 19 and RF Board U5 pin 3. Go back to CB U6 pin 19 and measure the voltage there - if the voltage is 5 volts there while being 0 volts at RF U5 pin 3, there is a break in the path - that includes the CB to RF board connectors - find the break and fix it (you can verify the fix with a continuity check on your DMM). OTOH, if the voltage is zero at both places, the problem is *either* a bad microprocessor output or a shorted RF Board U5 pin 3. The best way to determine which it is requires removing U5. If the voltage goes to 5 volts with U5 removed, the microprocessor is good and U5 is bad - but if it stays at zero volts, then the microprocessor needs to be replaced. There is another way to check if you do not have de-soldering equipment and cannot easily remove U5. Remove Control Board U6 from its socket and insert the ends of a resistor (470 ohms to 2,2k will do nicely for this check) between U6 pins 11 and 19 (count carefully). Then power the K2 on (do not expect a display or anything else to happen), then measure the voltage at RF Board U5 pin 3 - if it is 5 volts, U5 is OK, get a new K2 firmware chip - but if the voltage is zero at U5 pin 3, replace U5. 73, Don W3FPR David Johnson wrote: Don and the group, I have not yet solved this problem, but upon further troubleshooting a recurrent theme seems to be that the clock signal (SCK), which appears at pin 18 of MCU U6, pin 6 of EEPROM U7 and pin 10 of U8 on the control board, as well as pin 1 of DAC U5 on the RF board is constantly 5 volts when, according to the voltage charts, it should be 0 volts. Further, the /DAC2CS value at pin 19 of the MCU U6 (control board), which is also at pin 3 of U5 (RF board) is 0 volts when it should be 5 volts. The only other anomalous voltage values on MCU U6 are 0.1 volt on SRDIN pin 33 instead of the listed 5 volts, and 0.2 volt on /SR RD pin 38 instead of the listed 1.2 volts in the chart. So my question is, what controls the SCK value on pin 18 of the MCU U6? In other words, I assume that there is another pin on U6 that controls whether pin 18 is high or low. If not, should I assume that the MCU is bad because it always reads high? Many thanks to anyone willing to wade through all this! -- Dave WB4JTT --- On Wed, 12/31/08, Don Wilhelm w3...@embarqmail.com wrote: From: Don Wilhelm w3...@embarqmail.com Subject: Re: [Elecraft] K2 PLL reference oscillator range is zero To: wb4...@yahoo.com Date: Wednesday, December 31, 2008, 1:53 PM Dave, Yes, you should suspect U5 (or one of the digital signals going into it). No need to look at pin 7 with a scope - the output at pin 7 is analog and should remain a steady voltage. Check the soldering of U5 and the /DAC2CS signal path back to Control Board U6 pin 19 (there are connectors in the path that could also be suspect. The inputs on pin1 and pin 2 are shared with other digital devices on the Control Board, and if you have checked for things like the presence of sidetone, those signals (SCK and SDO) are working at their source so should be OK although there are also the RF Board to Control Board connections to consider as possible faults. 73, Don W3FPR ___ 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 SW for editing Freq memories?
No - but as soon as Wayne adds a few extra firmware commands I know of one program that will have the support. Simon Brown, HB9DRV www.ham-radio-deluxe.com - Original Message - From: Jim Miller j...@jtmiller.com Has any third party PC software been developed which can edit/load the K3 frequency memories? ___ 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] KAT 2 preliminary test
Allan, If you can hear all the other relays, yes, you may be concerned. As a *real* test, check continuity from the RF input solder pad to the center connector of the ANT1 and ANT2 jacks. The path having continuity should agree with the ANT1/2 annunciator. 73, Don W3FPR Allan Glasdam wrote: Hello list Now #6444 is in KAT2 test period. When I tap ANT 1/2 button, I hear no relay clicking! ANT2 attenuator turns on as it shall. Do I have to worry? 73 Allan, OZ8A ___ 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 No virus found in this incoming message. Checked by AVG - http://www.avg.com Version: 8.0.176 / Virus Database: 270.10.4/1880 - Release Date: 1/7/2009 8:49 AM ___ 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] Interface K3/transverter
I recently had the same problem. The following worked for me: ACC Pin 2 - Auxbus: connect to green wire - Pin 6 on DB-9 ACC Pin 7 - K3 on signal: connect to red wire - Pin 8 on DB-9 ACC Pin 10 - Keyout: connect to black wire - Pin 9 on DB-9 ACC Pin 5 or 12 - Gnd: connect to bare wire - Pin 1 on DB-9 73 Luc/F6HJO ___ 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] K2 #6662 Control Board Resistance U6/2930 a tad too high
Phil, Since this is primarily a check for shorts on the paddle input lines, I do not think you should be concerned - continue building. 73, Don W3FPR Phillip Heller wrote: Everything checks out per the Control Board resistance checks, though U6 29 30 to Ground show 95-97k ohm (dependent upon dmm polarity). So that's 5-7kohm greater than the range shown in the table, but less than 10% deviation... Is this something I should concern myself with? --phil ___ 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] Mildly confused - Assumed filter width and what I see in waterfall do not match
Thomas Bingenheimer wrote: I have turned on ESSB (set to 4 khz), and I have selected the 6 khz filter, but in no case do I get 4 khz in any mode. . . Does anyone see 4khz in the waterfall, and with the ability to xmit across the range? Thomas, I believe what you are seeing is normal - the limitation is the actual maximum bandwidth currently implemented in firmware. 73, Barry N1EU -- View this message in context: http://n2.nabble.com/Mildly-confused---Assumed-filter-width-and-what-I-see-in-waterfall-do-not-match-tp2115922p2122722.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
Re: [Elecraft] cw to psk
I haven't tried the data modes; I am mainly a CW guy. But what I would like to be able to do is this: when I'm on CW and a RTTY station fires up on top of me, I'd like to just hit a switch and send a preprogrammed RTTY QRL message to the RTTY op. Is this possible? If there was a dedicated one-button function for this in the firmware, I think it would be great. 73, Drew AF2Z On Tue, 06 Jan 2009 19:59:31 -0800 (PST), Don...w2xb wrote: Hello all, Just want to thank all that responded to my cry for help.I was trying to get the cw to psk to work with my key. Well after many hours trying to get it to work,with no luck. I finally sent an e-mail to K3support. Gary responded very fast.(like always). We checked out everything and I still didn't think I was putting out a psk signal. Finally Gray relayed to problem to Wayne, who suggested that I do a factory reboot. First I backed up my memories and setting with the Utility. Can't say enough for that great piece of software. Then did the reboot. Tried cw to psk with the key again. Still sounded the same. So got an e-mail from Wayne and he suggested that I call him to see if we could work it out.Making the call and talking to him, he keyed his rig in the cw to psk mode and I listened on the phone.Wh! The same sound I was getting out of my rig.HANG MY HEAD IN EMBARASSMENT!! There was nothing wrong with the rig or setup. I was just used to hearing the tones from the soundcard setup. Boy talk about a senior moment.. The best thing I did that saved me lots of work was backing up my rigs settings on the utility program Just did a restore and the rig was back to where it was before the hard boot. I have worked several stations using the cw-psk with the key and really think its neat. Just thought that I would pass this info on to all. And really like to thank Gary and Wayne for the great support. Don't think you can get any better support than ELECRAFT Many thanks Don...w2xb ___ 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] Six meter birdies.
hi all, I am also suffering from birdies especially (but not only) on 6m. I have them on the main receiver and on the subreceiver, but on different frequencies. (found them on 40m and 20m too) Many of them are low volume and don't bother me in real life, but some are really loud (up to S6) and show a microfonic effect when I tap on the cover of the K3. On the loudest one I can also hear a ticking sound when I turn the VFO back and forth over the birdie reagion. The intensity can be tuned with touching or taping on the synthesizer board and sometimes touching the koax cables makes a difference. Two friends of me with K3's also have similar birdies, one worse, one less. One K3 from another ham friend does not show them. Of course all my coax cables are connected, the shield of the cables is ok and all screws of the K3 housing are tight. Different routing of the coax cables does not help, and btw, with the limited space after adding the KRX3 there are not so many possibilities left to route the cables. On 7 Jan 2009 at 13:01, Geoffrey Mackenzie-Kennedy wrote: Wes Stewart N7WS wrote: I'm still playing with my new K3 and finally got around to listening on 6-meters. There are so many birdies as to make it unusable. At first I thought they might be external, and some were generated in my Lenovo laptop, but shutting it down and terminating the K3 antenna port with a load doesn't eliminate them. When listening to the same frequencies with an Icom IC-R10 with a whip antenna next to the K3 I don't hear a thing. Ideas? Wes N7WS -- Wes, From what you have said these birdies are being generated inside the K3, if I am right to assume that only the power supply and nothing else except the dummy antenna load is connected to your K3, and that turning your Icom IC-R10 on or off makes no difference to any birdies' level or frequency. I do wonder if you have a fault in your K3 when you say 'so many birdies', I get the impression that something is unstable on 6m but perhaps not on the lower frequency bands. There might be a poor solder connection to a bypass capacitor for example, which could result in problems on 6m but not on the lower frequency bands certainly if two or more capacitors are used in parallel,or some SMD capacitor has failed due to mechanical stress. It might be worthwhile to troubleshoot. Some of these internal birdies that you are hearing are probably legitimate members of the birdie family created by the receiver's spurious response(s) hearing one or more of the receiver's oscillators, or their products. The frequency of these birdies can be predicted and their level can vary greatly between identical receivers, also the routing of internal cables can become fussy if shielding is inadequate or RF grounds 'float'. However this latter issue is best left to the designer. 73, Geoff GM4ESD -- There are some things money can't buy, for everything else there's MasterCard. PGP-Key: http://www.qsl.net/oe9fwv/furlan.asc Fone +43 5522 75013 Fax +43 820 555 85 2621 Mobile +43 664 6340014 ___ 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] Mildly confused - Assumed filter width and what I see in waterfall do not match
I have added an ESSB index entry to K3 Utility Help (it's in K3 Utility version 1.2.1.6) to index the existing sentence the Crystal Filter Configuration Dialog Help page that says ESSB uses the AM filter for transmit. You can use the Crystal Filter Configuration Dialog to set the AM transmit filter that is used for ESSB. The remaining steps, CONFIG:TX ESSB and the numeric keypad selection, are not part of crystal filter configuration. Dick, K6KR -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Gary Smith Sent: Wednesday, January 07, 2009 6:09 AM To: Elecraft@mailman.qth.net Subject: Re: [Elecraft] Mildly confused - Assumed filter width and what I see in waterfall do not match A day or two ago I mentioned something about an difficulty getting ESSB to work when using the Elecraft Configuration software. I was suggested to look at the release notes in the utility. The utility has no search feature so I highlighted all the text in the release notes (under Help K3 Firmware Release Notes) and used Ctrl C to copy the test to a new test file. Starting at the top searching for ESSB I found where it was enabled and lower, under update 2.23 I found the following: (1) Make sure the 6 kHz filter is configured correctly for AM transmit; switch to AM mode, then specify this filter using CONFIG:FLTX AM. (A future firmware release should allow use of the FM filter for SSB as well, pending lab tests.) (2) Locate CONFIG:TX ESSB. Select the desired extended bandwidth for SSB transmit (3.0 to 4.0 kHz) using VFO A. Then tap `1´ on the keypad to turn ESSB on/off. When on, the + icon in the mode area will turn on. (If you turn ESSB on/off frequently, you might want to assign the TX ESSB menu entry to a programmable function switch.) I had to set up ESSB separately from the Edit Crystal Filters by doing the above but it indeed works. 73, Gary KA1J This is what has disturbed me - I have turned on ESSB (set to 4 khz), and I have selected the 6 khz filter, but in no case do I get 4 khz in any mode. specifically, in Data A with DSP set wide open at 4 khz, the waterfall always cuts off at 3500 hz in any software I use. I do not understand why I cannot get the full 4 khz bandwidth. The firmware is at 2.67, DSP at 1.96. Does anyone see 4khz in the waterfall, and with the ability to xmit across the range? --- On Wed, 1/7/09, Joe Subich, W4TV li...@subich.com wrote: From: Joe Subich, W4TV li...@subich.com Subject: RE: [Elecraft] Mildly confused - Assumed filter width and what I see in waterfall do not match To: w...@q.com, t...@yahoo.com Cc: elecraft@mailman.qth.net Date: Wednesday, January 7, 2009, 12:59 AM I tried to set the USB filter bandwidth to use the 6 KHz, but whenever I tried to XMIT I got an error. Apparently the widest filter permitted for SSB XMIT is 2.7 KHz, and this setting also somehow restricts the receive filter capability also. The only filters permitted for SSB transmit are 2.7 or 2.8 Khz (unless you have enabled ESSB). I had the same basic idea, but to use the 6 kHz wide flter for receive in USB mode for use with the wide bandwidth setting of WSJT, to be able to search a wider bandwidth for callers on EME. The maximum bandwidth permitted in data modes (or USB/LSB) is 4.0 KHz even with a 6 KHz filter. The DSP is limited to a 4200 Hz high frequency cutoff in all modes except CW where the maximum frequency is about 2400 Hz. 73, ... Joe, W4TV -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Lance Collister Sent: Tuesday, January 06, 2009 10:22 AM To: t...@yahoo.com Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] Mildly confused - Assumed filter width and what I see in waterfall do not match Thomas Bingenheimer wrote: I have been using several programs (Cocoamodem, mostly) to do PSK31, via Data A. Instead of being able to use the full 4khz waterfall bandwidth available in, say, Cocoamodem, I have been limited to the available width in the only filter I had in the rig, the 2.7 khz 5-pole appeared to limit me to about 2.7 khz. So, I added the 6 khz filter, set it up for SSB (and enable ESSB, 4.0 khz). I now show 3 khz (500 to 3500 hz) in the waterfall. I suspect I have overlooked something, but it is not clear to me what. Does anybody have any idea? Thanks! ___ 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
Re: [Elecraft] cw to psk
3 buttons... mode to Data Mx where you have the message saved mode back to CW This assumes you already have data mode set for FSK-D. If you have your K3 Utility program up and running you can probably program a macro to do it all in with one click. - 73, Greg - AB7R Whidbey Island WA NA-065 On Wed Jan 7 6:45 , drewko sent: I haven't tried the data modes; I am mainly a CW guy. But what I would like to be able to do is this: when I'm on CW and a RTTY station fires up on top of me, I'd like to just hit a switch and send a preprogrammed RTTY QRL message to the RTTY op. Is this possible? If there was a dedicated one-button function for this in the firmware, I think it would be great. 73, Drew AF2Z On Tue, 06 Jan 2009 19:59:31 -0800 (PST), Don...w2xb wrote: Hello all, Just want to thank all that responded to my cry for help.I was trying to get the cw to psk to work with my key. Well after many hours trying to get it to work,with no luck. I finally sent an e-mail to K3support. Gary responded very fast.(like always). We checked out everything and I still didn't think I was putting out a psk signal. Finally Gray relayed to problem to Wayne, who suggested that I do a factory reboot. First I backed up my memories and setting with the Utility. Can't say enough for that great piece of software. Then did the reboot. Tried cw to psk with the key again. Still sounded the same. So got an e-mail from Wayne and he suggested that I call him to see if we could work it out.Making the call and talking to him, he keyed his rig in the cw to psk mode and I listened on the phone.Wh! The same sound I was getting out of my rig.HANG MY HEAD IN EMBARASSMENT!! There was nothing wrong with the rig or setup. I was just used to hearing the tones from the soundcard setup. Boy talk about a senior moment.. The best thing I did that saved me lots of work was backing up my rigs settings on the utility program Just did a restore and the rig was back to where it was before the hard boot. I have worked several stations using the cw-psk with the key and really think its neat. Just thought that I would pass this info on to all. And really like to thank Gary and Wayne for the great support. Don't think you can get any better support than ELECRAFT Many thanks Don...w2xb ___ 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
Re: [Elecraft] KRC2 - More than one antenna per band? Aux outputs?
Dana, The answer is - 'yes' or 'maybe'. You can use 'relay logic' to obtain many combinations with the KRC2. You can easily select up to 3 antennas per band using the AC1, AC2, and AC3 outputs. Using additional decoding logic of the ACx outputs can yield up to 8 combinations (but that takes external hardware). If you connect the + side of a relay to The AC1 SOURCE DRIVER, and the - side of the same relay to the 40 meter SINK driver, that relay will only be activated when both AC1 and 40 meters are selected. Similarly, connect the + side of another relay to the AC2 source driver and its - side to the 40 meter sink driver and that relay will only be active when both AC2 and 40 meters are selected - similarly for the AC3 output which gives up to 3 antenna selections per band. The outputs of the KRC2 can be wire-ORed together, and using both the source drivers (+) and the sink drivers (-) at the relays, some logic can be performed. This scheme can be extended and the 'logic' functions available can be expanded at length by the use of isolating diodes external to the KRC2. So the answer is YES - the KRC2 can be used to switch between multiple antennas for one band. I don't know if it will fully meet your needs, that depends on how many combinations per band you have to manipulate. A bit of skill with manipulating basic 'logical AND' and 'logical OR' functions is helpful to create what you desire. If you can describe your antenna switching needs in logic functions, the possibilities will become more clear. For the remote operation of the AC1, AC2 and AC3 outputs, I just don't know - perhaps Jack Brindle will answer that. 73, Don W3FPR Dana Roode wrote: Greetings, Is there a way to select more than one antenna per band with the KRC2? IE, I have a 40 meter 4 square and a dipole, can I automatically select one when I go to 40 and still be able to select the other on manual command? I need to do this remotely. Similar question, there are a few Aux outputs on the KRC2, how does one control those remotely (that is, via the serial interface or some other means)? I have to select directions on my 4 square, and switch in and out a series capacitor on my 80 meter vertical for SSB. Dana, K6NR ___ 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 No virus found in this incoming message. Checked by AVG - http://www.avg.com Version: 8.0.176 / Virus Database: 270.10.4/1880 - Release Date: 1/7/2009 8:49 AM ___ 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] HRD and K3
Dave, Using 1 serial port (a real one, not a USB) I have no problems using both HRD and Digital Master 780 at the same time on my K3. I have not tried this with a usb port yet but it may work. First you have to be sure that your K3 is being controlled by HRD. Then you have to enable the IP Server (under the Tools Menu). Go into DM 780, select radio and configure it for the K3. Afterward you might configure some of the control buttons and sliders for K3 controls. Now after booting up HRD, then DM 780 one of the last things in the booting process is connection to the K3. You will know this when you see the rig,s frequency displayed on DM780. Hope this helps. 73 Dave KD1NA___ 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] OT: Band congestion
-Original Message- Sandy said: We CW casual QSO people do have trouble with RTTY people all over the place. Huh? CW is allowed on all HF frequencies (except 60). If RY (or contesting or whatever) is in the way, just move up the band. de Doug KR2Q Easily said, but hard in practice when the relatively few non-contest stations are scattered in tiny pockets over hundreds of KHz of wall-to-wall contesting that is constantly moving about in waves without regard to the common frequencies within the bands used daily by nets and other activities. Of course we need room for contesters. Contesting is popular, but it's only one Ham activity. It's not practical for contesters to make sure they never QRM someone else when they transmit. It's also not practical to try to use the Ham bands for normal QSOs and nets, leaving plenty of spectrum around us, when contesters are roaming the same frequencies, frequently using specialized, state-of-the-art equipment. Contesting itself is being threatened by its own popularity. The more it gets in the way of other activities the closer we are to more rules limiting contest activity. Such rules could be demanded by courts representing Hams who object to being denied their normal use of the bands, or by government agencies who consider trained Amateur Radio volunteers and our frequency allocations one of their important resources. The Elecraft reflector isn't the place to explore the options, but it is an issue I hope we handle ourselves through our national Amateur Radio organizations rather than waiting for someone else to do it for us. Ron AC7AC ___ 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] cw to psk
Ok, thanks Greg. That seems to work well enough. I don't think I need the macro now. 73, Drew AF2Z On Wed, 07 Jan 2009 10:13:20 -0500, Greg - AB7R wrote: 3 buttons... mode to Data Mx where you have the message saved mode back to CW This assumes you already have data mode set for FSK-D. If you have your K3 Utility program up and running you can probably program a macro to do it all in with one click. - 73, Greg - AB7R Whidbey Island WA NA-065 ___ 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] Six meter birdies
I read the digests, so I won't quote all of the helpful responses I've received on this topic but will add on here. Let me restate, the K3 was operated without an antenna and just a 50-ohm termination on the antenna connector. The only other piece of equipment operating in the shack was the Astron RS35A power supply. I do not have a second receiver installed. I have only the 2.8 KHz filter installed and all of these tests were with the default DSP BW. Noise reduction and noise blanking were off. The preamp was on and does make a difference in strength of the spurs, although many are heard without the preamp. Per a suggestion from Tony, K2ZLS, I did a recalibration, which may have reduced the number of birdies, but certainly did not eliminate them. I have checked all of the internal cable connections and they are fully engaged. To be sure, most of these are very low level, but as on old EME op, they are Q5. Someone wanted some frequencies listed. Here are some, but by no means all of them, listed by mode in sets that seem to be related and slightly rounded: F_lsb F_usb F_cw 50. 50. 50. 50.0270 50.0270 50.0313 50.0342 50.0310 50.0400 50.0453 50.0395 50.0473 50.0476 50.0470 50.0750 50.0747 50.0755 50.0793 50.0773 50.0953 50.0933 50.0950 50.0982 50.0988 50.0986 50.1108 50.1108 50.1116 50.1228 50.1228 50.1228 50.1363 50.1303 50.1356 50.1589 50.1588 50.1586 Years ago I built a high-performance HB receiver for 10-meters and i-f for transverters. For evaluation I also built a test oscillator, like the XG-1 that used a 28.700 MHz crystal. One of my first tests of the K3 was to use this oscillator to measure sensitivity. By serendipity, the first birdie I discovered was at 28.700 +/- MHz. Go figure. Wes N7WS ___ 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] OT: Band congestion
Ron, It's interesting that this debate seems to be perpetual in nature. I've read complaints in magazines back into the 1950s about contesting and spectrum usage. I think your first line aptly describes the situation, the few versus the many. Although, I would postulate the one should include the sunspot count in that observation. Keep in mind that some of the larger contests are reporting 10s of thousands of unique calls participating in an event. Needless to say, if say 20 is the only open band for a DX contest EVERYONE will be there. CQ WW DX is probably the best example of just how insane that can get. At this juncture in the solar cycle, everyone needs to keep in mind that 80/40/20 bear the bulk of Ham activity. One can throw 60/30/17 into the mix, by agreement contesting is NOT allowed on those bands. I would also suggest that the VAST majority of contesters are aware of other activities on the air concurrently. The vast MAJORITY will QSY, or send QRL? or move. Too, this assumes they are even hearing the stations being QRMed. As to the bad eggs, what can one say? Look at how long it takes for the FCC to revoke malicious operator's licenses... When was the last time you saw an OO card or report? The contest community does try to police it's own, but it is a Sisyphean task. Too, how do you enforce any ruling? This debate will continue as long as Ham Radio exists and folks feel they have exclusive rights to specific times and frequencies and modes. Emergency communications trumps everything. Short of that, or the the regulating authorities around the world assigning specific HR frequencies to each individual, the majority will continue to rule in any given situation. 73, Julius n2wn Ron D'Eau Claire wrote: -Original Message- Sandy said: We CW casual QSO people do have trouble with RTTY people all over the place. Huh? CW is allowed on all HF frequencies (except 60). If RY (or contesting or whatever) is in the way, just move up the band. de Doug KR2Q Easily said, but hard in practice when the relatively few non-contest stations are scattered in tiny pockets over hundreds of KHz of wall-to-wall contesting that is constantly moving about in waves without regard to the common frequencies within the bands used daily by nets and other activities. Of course we need room for contesters. Contesting is popular, but it's only one Ham activity. It's not practical for contesters to make sure they never QRM someone else when they transmit. It's also not practical to try to use the Ham bands for normal QSOs and nets, leaving plenty of spectrum around us, when contesters are roaming the same frequencies, frequently using specialized, state-of-the-art equipment. Contesting itself is being threatened by its own popularity. The more it gets in the way of other activities the closer we are to more rules limiting contest activity. Such rules could be demanded by courts representing Hams who object to being denied their normal use of the bands, or by government agencies who consider trained Amateur Radio volunteers and our frequency allocations one of their important resources. The Elecraft reflector isn't the place to explore the options, but it is an issue I hope we handle ourselves through our national Amateur Radio organizations rather than waiting for someone else to do it for us. Ron AC7AC ___ 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 -- View this message in context: http://n2.nabble.com/OT%3A-Band-congestion-tp2120965p2123882.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] Six meter birdies -- theory and mitigation
Some birdies are unavoidable in a high-dynamic-range, down-conversion design. We worked very hard to keep them out of the ham bands, and in the case of 6 m, we focused on keeping them out of the portion of the band typically used for weak-signal work. (The Orion has a similar conversion scheme to the K3's, but doesn't provide 6 meter coverage. That simplifies things ;) Up-conversion transceivers generally have fewer spurious signals on 6 m, but they also typically have very weak receivers, due to the use of wide first I.F. filters, as well as very high-frequency 1st LOs with much worse minimum phase noise than the K3. Birdies usually result from VHF or UHF harmonics of the K3's high-level signal sources, mixed with another signal source, internal or external. In both cases, they may not actually be on the band you think they are; they could be on an image band, circumventing the filters. External VHF or UHF signals could be getting in through other I/O besides the antenna jack, and every receiver will respond differently to them. So, while a given VHF receiver with a whip doesn't pick them up, that doesn't mean they aren't there--they could just be well outside the 6-m band, and mixing to produce a response in the K3. The only way to tell for sure is to put the unit under test in a screen room. It's possible to eliminate every last portal for such signals, but to do so would take many pound's worth (and $ worth) of additional shielding, bypassing, and filtered connectors. That's just not possible within the K3's budget or package size, so we aimed for the best possible compromise. All that said, there are things we can do on an individual K3: 1. Make sure that the screw from the left side panel into the front shield is tight. If a birdie drops a lot in amplitude when you wedge a knife blade between these two panels, near the screw, then the panels aren't making good electrical contact. We're considering whether to add a small piece of copper EMI tape here so that the screw tension isn't so critical. 2. EMI tape can be applied in various places within the cabinet, typically along seams where panels join. This tape is very expensive. Some experimentation may be in order here to see were we can get the most bang for the buck (dB for the inch?). 3. Specific birdies due to VHF harmonics can sometimes be shifted out of harm's way just by shifting the passband (SHIFT control) or selecting a different crystal filter. The reason for this is that it moves the synthesizer (1st LO). 4. If all else fails, try turning on the notch filter. You can use auto-notch in voice modes, but in CW mode you're limited to manual notch. If you still feel that your K3 has excessive 6-m birdies, or that they're causing specific operating problems, please contact me directly and I'll try to help work out a solution. 73, Wayne N6KR --- 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
Re: [Elecraft] Six meter birdies
Wes, try it with a 6M antenna attached. I have found with a number of 6M rigs over the years that absent an external 6M antenna (or one not properly connected, i.e. a loose PL259), I hear all kinds of birdies on 6M. I have the same situation with my 2M rig. Once the antenna is connected however, the birdies are gone. My hypothesis is that absent an outside antenna, the rig is picking up something from my nearby computer. Not sure that will help, but it's worth a shot. 73, Lou, W0FK Wes Stewart wrote: snip Let me restate, the K3 was operated without an antenna and just a 50-ohm termination on the antenna connector. snip - St. Louis, MO -- View this message in context: http://n2.nabble.com/Re%3A-Six-meter-birdies-tp2123754p2123926.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
Re: [Elecraft] Six meter birdies.
I had some birds using a switching Power supply.I have no birds, with a linear Power supply. I have also noted some birds if cover has removed. 73 Giuliano I0CG K3 # 1814 -Dr. Werner Furlan wrote:--- hi all, I am also suffering from birdies especially (but not only) on 6m. I have them on the main receiver and on the subreceiver, but on different frequencies. (found them on 40m and 20m too) Many of them are low volume and don't bother me in real life, but some are really loud (up to S6) and show a microfonic effect when I tap on the cover of the K3. On the loudest one I can also hear a ticking sound when I turn the VFO back and forth over the birdie reagion. The intensity can be tuned with touching or taping on the synthesizer board and sometimes touching the koax cables makes a difference. Two friends of me with K3's also have similar birdies, one worse, one less. One K3 from another ham friend does not show them. Of course all my coax cables are connected, the shield of the cables is ok and all screws of the K3 housing are tight. Different routing of the coax cables does not help, and btw, with the limited space after adding the KRX3 there are not so many possibilities left to route the cables. ___ 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] FS: KDSP2 Built
Hello, Completed KDSP2 for sale. With manual. $195 Excellent build. Operation 100%. Please reply off list if interested. tnx, Jerry ___ 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] K2 #6662 Control Board Resistance U6/2930 a tad too high
I finished my Control board last night too, and had the same exact values for those test points. All the other test points were good according to the table too. I start the next phase tonight. K2 #6665 is on my bench, but it doesn't know it's a 6665 yet. ;-) I saw Don's reply. -jeff -- Jeff Wandling DE W7BRS K3 #2105 http://w7brs.com/k3 j...@w7brs.com On Wed, 7 Jan 2009, Phillip Heller wrote: Everything checks out per the Control Board resistance checks, though U6 29 30 to Ground show 95-97k ohm (dependent upon dmm polarity). ___ 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] KRC2 - More than one antenna per band? Aux outputs?
Hi Dana I can think of several ways to do what you want, but they will take a little bit of building. One way would be for you to make a small relay box that would connect your 40m antennas to ANT1 and ANT2 of the KAT3 ATU. On other bands, you could have whatever other antennas you use connected to ANT1 and ANT2, but switch to the 40m antennas on 40m. The relays in the box can be controlled from the KRC2, which is the way I switch my antennas here. GL and 73 Bob N6WG - Original Message - From: Dana Roode dana.ro...@gmail.com To: elecraft@mailman.qth.net Sent: Tuesday, January 06, 2009 7:06 AM Subject: [Elecraft] KRC2 - More than one antenna per band? Aux outputs? Greetings, Is there a way to select more than one antenna per band with the KRC2? IE, I have a 40 meter 4 square and a dipole, can I automatically select one when I go to 40 and still be able to select the other on manual command? I need to do this remotely. Similar question, there are a few Aux outputs on the KRC2, how does one control those remotely (that is, via the serial interface or some other means)? I have to select directions on my 4 square, and switch in and out a series capacitor on my 80 meter vertical for SSB. Dana, K6NR ___ 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
Re: [Elecraft] KRC2 - More than one antenna per band? Aux outputs?
Apart from using the aux outputs, which is probably the best method, you might also be able to fool the K3 that there are two 40m bands by pretending there is a transverter with a 40m IF that needs 100W of drive, has a 0MHz LO and is connected to the main antenna. Then use the KRC2 transverter outputs to select the relay. The KRC2 with the current firmware is not a particularly good match to the K3. Hopefully we will see new firmware soon but as you are remotely operating the K3, why not use a PC to select the relay with a USB relay board. If it is a fairly simple configuration the K3 has two logic outputs that could probably be used, either directly to control two relays. I take it you are aware you can also use the KRC2 buttons and its RS232 port. Finally, if you wire up a toggle relay - e.g. via a flip-flop, you could make the relay alternate between antennas each time you select 40m. Does anyone know if the auxbus commands are published ? I believe there would be a market for 3rd party add-ons if it is. RS232 does not announce everything, so can't be used passively. -- View this message in context: http://n2.nabble.com/KRC2---More-than-one-antenna-per-band--Aux-outputs--tp2120977p2124075.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] Six meter birdies and CW norm/reverse
wayne burdick wrote: 3. Specific birdies due to VHF harmonics can sometimes be shifted out of harm's way just by shifting the passband (SHIFT control) or selecting a different crystal filter. The reason for this is that it moves the synthesizer (1st LO). I forgot to mention that in CW mode, a birdie due to high VHF/UHF signal mixing can often be moved or eliminated altogether by switching to CW REV (CW reverse, i.e. opposite-sideband-CW). The K3 works just as well either way, but CW REV moves the LOs and thus may move the birdie. 73, Wayne N6KR --- 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: DVR: record qso with my own voice
excuse me if this question was already answered: how can I record a QSO with my own over? I can record and playback the received audio with vy good quality but when I talk into the microphone I have an empty space in the recorded audio. tnx, 73! de Werner OE9FWV -- I doubt, therefore I might be. Email powered by Pegasus Mail free at http://www.pmail.com Homepage: http://www.qsl.net/oe9fwv/ Fone +43 5522 75013 Fax +43 5522 75013 15 Mobile +43 664 6340014 Elecraft K2 #5203 K3 #656 ___ 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 Programmer's Reference updated
The programmer's reference for K3 remote control commands has just been updated to revision B17. Here's the link: http://www.elecraft.com/manual/K3_Pgmrs_Ref_Rev_B17.pdf See the last page for change history. 73, Wayne N6KR --- 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
Re: [Elecraft] XKeys Software Support for K2 / K3
David et al: Here is a repost of some info you may find useful. PIEngineering ( http://xkeys.com/xkeys.php ) offers a line of computer accessories, some of which are interesting to radio operation. Tom, K8TB got me interested in developing background application software that permits the K2 or K3 owner to assign and access one or more functions for each XKeys button. Requirements o The only XKeys devices supported are USB models with buttons and designated MWII by PIEngineering. o Windows XP (tested with SP3) o The software is EZSetKeys and will install both .NET Framework 3.5 and SQL Server Express if not already present on your station computer o Virtual port software such as Eterlogic VSPE or LP-Bridge if you need to share the K2/K3 serial port with other apps If you have one of these devices or are thinking about getting one and are interested in joining Tom and myself evaluating the new software, contact me off of the reflector (use email address mike at mclendon dot info) to obtain pre-release software download information. Tested with virtual port software so port sharing works fine. I do not plan to charge any license fees for this application. 73 - Mike, KE4U From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of David Ferrington, M0XDF Sent: Wednesday, January 07, 2009 4:08 AM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] XKeys Software Support for K2 / K3 Would someone please post some more info about this, like web site of unit etc? I think I must have missed any original post. I found http://www.piengineering.com/xkeys/xkpro.php which might be the keypad, but nothing about the interface or software. TIA 73 de M0XDF, K3 #174 -- The universe is like a safe to which there is a combination. But the combination is locked up in the safe. -Peter De Vries, editor, novelist (1910-1993) -- I am using the free version of SPAMfighter. We are a community of 5.8 million users fighting spam. SPAMfighter has removed 2054 of my spam emails to date. Get the free SPAMfighter here: http://www.spamfighter.com/len The Professional version does not have this message ___ 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: DVR: record qso with my own voice
I think the answer is that it isn't supported at present, but will be in a future f/w release. 73 de M0XDF, K3 #174 -- The universe is like a safe to which there is a combination. But the combination is locked up in the safe. -Peter De Vries, editor, novelist (1910-1993) On 7 Jan 2009, at 19:50, Dr. Werner Furlan wrote: excuse me if this question was already answered: how can I record a QSO with my own over? I can record and playback the received audio with vy good quality but when I talk into the microphone I have an empty space in the recorded audio. ___ 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] XKeys Software Support for K2 / K3
Thanks for that, but I'm a Mac OSX man myself :-) 73 de M0XDF, K3 #174 -- Experience is that marvellous thing that enables you to recognize a mistake when you make it again. -Franklin P. Jones On 7 Jan 2009, at 21:00, Mike McLendon wrote: David et al: Here is a repost of some info you may find useful. PIEngineering ( http://xkeys.com/xkeys.php ) offers a line of computer accessories, some of which are interesting to radio operation. Tom, K8TB got me interested in developing background application software that permits the K2 or K3 owner to assign and access one or more functions for each XKeys button. Requirements o The only XKeys devices supported are USB models with buttons and designated MWII by PIEngineering. o Windows XP (tested with SP3) o The software is EZSetKeys and will install both .NET Framework 3.5 and SQL Server Express if not already present on your station computer o Virtual port software such as Eterlogic VSPE or LP-Bridge if you need to share the K2/K3 serial port with other apps If you have one of these devices or are thinking about getting one and are interested in joining Tom and myself evaluating the new software, contact me off of the reflector (use email address mike at mclendon dot info) to obtain pre-release software download information. Tested with virtual port software so port sharing works fine. I do not plan to charge any license fees for this application. ___ 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] Notch control
A minor usability issue... Tapping NOTCH once engages auto mode, then a second tap goes to manual, then a third tap turns notch off. That's all OK... except when I tap once to auto, then, a short while later, the lid who was throwing a carrier goes away, I tap the button again, and expect it to turn notch off, but it still cycles into manual mode, requiring a further tap. Sooo... perhaps if auto mode has been engaged for more than a second or so, a single tap could turn notch off, instead going to manual mode? Actually, thinking about it some more; maybe manual mode should only come into play on hold instead of tap? I imagine other would have different preferences, though Comments? ~Iain / N6ML ___ 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] Notch control
IIRC, holding the button brings up the Notch Edit mode where you get to pick the manual freq. Having a user interface that is modal can be very frustrating. If a button does one thing at one time and another some time later it can represent a moving target for learning and leave people confused. For that reason, I'd prefer to leave it the way it is. At least it is predictable. Or maybe a cool mod would be to add a config setting that would allow you to set Notch to Manual, Auto or Both for SSB. That way, you could bypass the Manual mode if you never use it and the Notch button could be a simple On/Of switch. And then, if you held it down, it could induce a short circuit across the finals of the LID who is jamming you. Hold the button for a few seconds and your problem is truly solved :-) - Keith N1AS - - K3 711 - -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Iain MacDonnell - N6ML Sent: Wednesday, January 07, 2009 4:37 PM To: Elecraft Subject: [Elecraft] Notch control A minor usability issue... Tapping NOTCH once engages auto mode, then a second tap goes to manual, then a third tap turns notch off. That's all OK... except when I tap once to auto, then, a short while later, the lid who was throwing a carrier goes away, I tap the button again, and expect it to turn notch off, but it still cycles into manual mode, requiring a further tap. Sooo... perhaps if auto mode has been engaged for more than a second or so, a single tap could turn notch off, instead going to manual mode? Actually, thinking about it some more; maybe manual mode should only come into play on hold instead of tap? I imagine other would have different preferences, though Comments? ~Iain / N6ML ___ 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] Notch control
YES, Ian, YES! I support your idea and when thinking of itanother one about the Notch controls. The situation now is, that when the manual notch is switched on, and the notch freq is on the VFO B display, I cannot move the VFO A!! I first have to tap the DISP button or the Notch again. In case of touching either button, the manual notch stays on. How about this solution: Tap Notch: auto notch comes up Tap again: auto notch switches off. Hold Notch: manual notch comes on , as it is now, and notch freq visible in VFO B display, and you are able to move VFO A Tap Notch again: Notch switches off and VFO B display goes back to normal If you want the normal VFO B display again and manual notch stays on, tap DISP AND: So VFO A is always unlocked during this. 73 Arie PA3A -Oorspronkelijk bericht- Van: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] Namens Iain MacDonnell - N6ML Verzonden: woensdag 7 januari 2009 22:37 Aan: Elecraft Onderwerp: [Elecraft] Notch control A minor usability issue... Tapping NOTCH once engages auto mode, then a second tap goes to manual, then a third tap turns notch off. That's all OK... except when I tap once to auto, then, a short while later, the lid who was throwing a carrier goes away, I tap the button again, and expect it to turn notch off, but it still cycles into manual mode, requiring a further tap. Sooo... perhaps if auto mode has been engaged for more than a second or so, a single tap could turn notch off, instead going to manual mode? Actually, thinking about it some more; maybe manual mode should only come into play on hold instead of tap? I imagine other would have different preferences, though Comments? ~Iain / N6ML ___ 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] RF Space SDR-IQ for sale
RF Space SDR-IQ with Spectra Vue software and USB cable, less than one month old, $435 shipped to lower 48. Contact me off list. Too much for me. Cheers, Bob, k9foh. ___ 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 Notch control
While on the subject of the K3 notch, the notch is quite crude compared to the capabilities of the notch in my SDR receiver. I accept the SDR has a powerful PC to assist, but the K3 notch is lacking in the following areas: On the 80m QRP frequency there is an annoying carrier often present some 70Hz or so above 3560 KHz, my database gives it as Radio Korea. The K3 notch cannot remove the carrier without impacting on any station calling on 3560. That might seem like a tall order, but the notch in the SDR is around 70 dB deep and only a few Hz wide at it's narrowest setting. In addition it is of adjustable width. The SDR removes the carrier completely without any noticeable impact on a station on 3560. The K3 notch only sets in 20 Hz steps and is of a fixed width that is quite wide. Any chance of a review of the K3 notch and it's capabilities? 73 Dave, G4AON K3/100 #80 ___ 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] Notch control
Darwin, Keith wrote: Or maybe a cool mod would be to add a config setting that would allow you to set Notch to Manual, Auto or Both for SSB. That way, you could bypass the Manual mode if you never use it and the Notch button could be a simple On/Of switch. And then, if you held it down, it could induce a short circuit across the finals of the LID who is jamming you. Hold the button for a few seconds and your problem is truly solved :-) Who remembers the old Terry and the Pirates series in which the Dragon Lady's minions had a device which could zero in on anyone using a transmitter, causing their headphones to explode? How many times have I wished for that in a pileup! -- 73, Vic, K2VCO Fresno CA http://www.qsl.net/k2vco ___ 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] Notch control
While we're opening the notch topic, how about a truely narrow notch for CW-- maybe about 30Hz.? The present one is far too wide for most CW situations. One is running stations and another station starts up too close on one side. A narrow notch could be one more tool. Alternatively, fix the shift control to have the 10Hz steps requested by others when using narrow CW filters. 73 de Brian/K3KO Darwin, Keith wrote: IIRC, holding the button brings up the Notch Edit mode where you get to pick the manual freq. Having a user interface that is modal can be very frustrating. If a button does one thing at one time and another some time later it can represent a moving target for learning and leave people confused. For that reason, I'd prefer to leave it the way it is. At least it is predictable. Or maybe a cool mod would be to add a config setting that would allow you to set Notch to Manual, Auto or Both for SSB. That way, you could bypass the Manual mode if you never use it and the Notch button could be a simple On/Of switch. And then, if you held it down, it could induce a short circuit across the finals of the LID who is jamming you. Hold the button for a few seconds and your problem is truly solved :-) - Keith N1AS - - K3 711 - -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Iain MacDonnell - N6ML Sent: Wednesday, January 07, 2009 4:37 PM To: Elecraft Subject: [Elecraft] Notch control A minor usability issue... Tapping NOTCH once engages auto mode, then a second tap goes to manual, then a third tap turns notch off. That's all OK... except when I tap once to auto, then, a short while later, the lid who was throwing a carrier goes away, I tap the button again, and expect it to turn notch off, but it still cycles into manual mode, requiring a further tap. Sooo... perhaps if auto mode has been engaged for more than a second or so, a single tap could turn notch off, instead going to manual mode? Actually, thinking about it some more; maybe manual mode should only come into play on hold instead of tap? I imagine other would have different preferences, though Comments? ~Iain / N6ML ___ 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: Ref Osc Cal
Has anyone successfully carried out Method 3 of the Reference Oscillator Calibration described on Pg 49 of the manual? The functionality of keys 1, 2 and 3 described in the procedure doesn't seem to work (I've got the 1ppm TXCO btw). When I bring up REF CAL in the menu I see the osc freq but can't enter a mode to allow me to enter the oscillator data sheet values. :( - Shane K3/10: S/N 2127, KBPF3, KFL3B-FM, KFL3A-6K, KFL3A-2.8K, KFL3A-400, KTCXO3-1 KXV3. -- View this message in context: http://n2.nabble.com/K3%3A-Ref-Osc-Cal-tp2125087p2125087.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
Re: [Elecraft] K3: Ref Osc Cal
Method 3 is not yet available in firmware. See omissions in the owner's manual errata: http://www.elecraft.com/manual/K3_owner's_man_errata_D1-6.pdf Dick, K6KR -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of VK5ABQ Sent: Wednesday, January 07, 2009 2:29 PM To: elecraft@mailman.qth.net Subject: [Elecraft] K3: Ref Osc Cal Has anyone successfully carried out Method 3 of the Reference Oscillator Calibration described on Pg 49 of the manual? The functionality of keys 1, 2 and 3 described in the procedure doesn't seem to work (I've got the 1ppm TXCO btw). When I bring up REF CAL in the menu I see the osc freq but can't enter a mode to allow me to enter the oscillator data sheet values. :( - Shane K3/10: S/N 2127, KBPF3, KFL3B-FM, KFL3A-6K, KFL3A-2.8K, KFL3A-400, KTCXO3-1 KXV3. -- View this message in context: http://n2.nabble.com/K3%3A-Ref-Osc-Cal-tp2125087p2125087.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
Re: [Elecraft] Mildly confused - Assumed filter width and what I see in waterfall do not match
This is the current state of the radio : the 6 khz filter is in FL2, the 2.7 khz filter is in FL3. ESSB is on, and set to 4.0, complete with the '+' displaying in the right of the display when USB/LSB is used (note that it is off during DATA modes). AM TX is set to FL2, SSB TX is set to FL3 (it will not allow it to be set to FL2, even with ESSB on). IN data A, I am setting the DSP to 4 khz. If the firmware is enforcing the use of FL3 for Data A, why would this be so? With software that can do 4.0 khz or greater waterfalls, why would we want to arbitrarily restrict the radio? For that matter, why restrict it at all for DATA modes? If the software on the computer would do it, why should we not be able to receive or transmit with say, the FM filter? If there is any such restriction, I would like to have the possibility of removing it considered. Thanks! ___ 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] Mildly confused - Assumed filter width and what I see in waterfall do not match
Thomas, I will not answer your questions directly, BUT From an operational standpoint, using a wide bandwidth for data modes is *not* the best way to do it. The reason is AGC in the radio. Any signal in the receiver passband can activate the AGC - and that is fine *if and only if* the strongest station in the receiver passband is the one you are working - usually that is not the case. The strong signal will reduce the receiver gain due to its AGC action and the station you are trying to QSO with will be reduced along with it. Overload of the DAC by the strong signals is another similar consideration - fortunately, the K3 employs a hardware AGC ahead of the DAC to avoid just that possibility. The DSP ADC can handle an S9+20 signal without overload, but there are signals stronger than that even in the sub-bands commonly used for digital. Using a narrow passband for data modes allows one to avoid that situation. Yes, one must tune with the VFO to place the desired station inside the receiver passband, but the possibility of a QRM free QSO is much greater with the narrow passband. Just because the software application can display a 4 kHz slice of the spectrum is not sufficient reason to use a wide receiver passband IMHO. Elecraft may well consider it just because some folks want to operate that way, but it certainly does not make much sense to me. 73, Don W3FPR Thomas Bingenheimer wrote: This is the current state of the radio : the 6 khz filter is in FL2, the 2.7 khz filter is in FL3. ESSB is on, and set to 4.0, complete with the '+' displaying in the right of the display when USB/LSB is used (note that it is off during DATA modes). AM TX is set to FL2, SSB TX is set to FL3 (it will not allow it to be set to FL2, even with ESSB on). IN data A, I am setting the DSP to 4 khz. If the firmware is enforcing the use of FL3 for Data A, why would this be so? With software that can do 4.0 khz or greater waterfalls, why would we want to arbitrarily restrict the radio? For that matter, why restrict it at all for DATA modes? If the software on the computer would do it, why should we not be able to receive or transmit with say, the FM filter? If there is any such restriction, I would like to have the possibility of removing it considered. Thanks! ___ 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] Mildly confused - Assumed filter width and what I see in waterfall do not match
I simply disable AGC when I wish to run a wide receive bandwith with PSK31 for point and click tuning - precisely to avoid such a problem. Bob NW8L On Wed, Jan 7, 2009 at 5:44 PM, Don Wilhelm w3...@embarqmail.com wrote: Thomas, I will not answer your questions directly, BUT From an operational standpoint, using a wide bandwidth for data modes is *not* the best way to do it. The reason is AGC in the radio. Any signal in the receiver passband can activate the AGC - and that is fine *if and only if* the strongest station in the receiver passband is the one you are working - usually that is not the case. The strong signal will reduce the receiver gain due to its AGC action and the station you are trying to QSO with will be reduced along with it. Overload of the DAC by the strong signals is another similar consideration - fortunately, the K3 employs a hardware AGC ahead of the DAC to avoid just that possibility. The DSP ADC can handle an S9+20 signal without overload, but there are signals stronger than that even in the sub-bands commonly used for digital. Using a narrow passband for data modes allows one to avoid that situation. Yes, one must tune with the VFO to place the desired station inside the receiver passband, but the possibility of a QRM free QSO is much greater with the narrow passband. Just because the software application can display a 4 kHz slice of the spectrum is not sufficient reason to use a wide receiver passband IMHO. Elecraft may well consider it just because some folks want to operate that way, but it certainly does not make much sense to me. 73, Don W3FPR Thomas Bingenheimer wrote: This is the current state of the radio : the 6 khz filter is in FL2, the 2.7 khz filter is in FL3. ESSB is on, and set to 4.0, complete with the '+' displaying in the right of the display when USB/LSB is used (note that it is off during DATA modes). AM TX is set to FL2, SSB TX is set to FL3 (it will not allow it to be set to FL2, even with ESSB on). IN data A, I am setting the DSP to 4 khz. If the firmware is enforcing the use of FL3 for Data A, why would this be so? With software that can do 4.0 khz or greater waterfalls, why would we want to arbitrarily restrict the radio? For that matter, why restrict it at all for DATA modes? If the software on the computer would do it, why should we not be able to receive or transmit with say, the FM filter? If there is any such restriction, I would like to have the possibility of removing it considered. Thanks! ___ 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
Re: [Elecraft] Mildly confused - Assumed filter width and what I see in waterfall do not match
Bob, That will do the trick in an analog only receiver, but a receiver like the K3 has an analog front end followed by an ADC and DSP processor. The trick is to keep from overloading the ADC - should that happen, the copy will be garbage. That situation is not limited to the K3 - overload of the soundcard ADC is also a possibility with equally bad results. I have to admit that in many cases, one can operate with a wide bandwidth with no problem, but when that strong signal enters the passband, the wide bandwidth possibilities are all over. I chose to take preventive measures before that happens. 73, Don W3FPR Bob Cunnings wrote: I simply disable AGC when I wish to run a wide receive bandwith with PSK31 for point and click tuning - precisely to avoid such a problem. Bob NW8L On Wed, Jan 7, 2009 at 5:44 PM, Don Wilhelm w3...@embarqmail.com wrote: Thomas, I will not answer your questions directly, BUT From an operational standpoint, using a wide bandwidth for data modes is *not* the best way to do it. The reason is AGC in the radio. Any signal in the receiver passband can activate the AGC - and that is fine *if and only if* the strongest station in the receiver passband is the one you are working - usually that is not the case. The strong signal will reduce the receiver gain due to its AGC action and the station you are trying to QSO with will be reduced along with it. Overload of the DAC by the strong signals is another similar consideration - fortunately, the K3 employs a hardware AGC ahead of the DAC to avoid just that possibility. The DSP ADC can handle an S9+20 signal without overload, but there are signals stronger than that even in the sub-bands commonly used for digital. Using a narrow passband for data modes allows one to avoid that situation. Yes, one must tune with the VFO to place the desired station inside the receiver passband, but the possibility of a QRM free QSO is much greater with the narrow passband. Just because the software application can display a 4 kHz slice of the spectrum is not sufficient reason to use a wide receiver passband IMHO. Elecraft may well consider it just because some folks want to operate that way, but it certainly does not make much sense to me. ___ 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] Mildly confused - Assumed filter width and what I see in waterfall do not match
Disabling the AGC in the K3 certainly does do the trick in terms of preventing strong signals in the passband from reducing receiver gain and thus affecting the weaker signal I'm decoding - that's exactly why I do it. As for ADC overload -that's a risk I'm well aware of but most of the time it's a non-issue, for me at least. If it happened I would react to it, but I rarely encounter signals in the passband at anywhere near the level to cause trouble of that sort. Bob NW8L On Wed, Jan 7, 2009 at 6:23 PM, Don Wilhelm w3...@embarqmail.com wrote: Bob, That will do the trick in an analog only receiver, but a receiver like the K3 has an analog front end followed by an ADC and DSP processor. The trick is to keep from overloading the ADC - should that happen, the copy will be garbage. That situation is not limited to the K3 - overload of the soundcard ADC is also a possibility with equally bad results. I have to admit that in many cases, one can operate with a wide bandwidth with no problem, but when that strong signal enters the passband, the wide bandwidth possibilities are all over. I chose to take preventive measures before that happens. 73, Don W3FPR Bob Cunnings wrote: I simply disable AGC when I wish to run a wide receive bandwith with PSK31 for point and click tuning - precisely to avoid such a problem. Bob NW8L On Wed, Jan 7, 2009 at 5:44 PM, Don Wilhelm w3...@embarqmail.com wrote: Thomas, I will not answer your questions directly, BUT From an operational standpoint, using a wide bandwidth for data modes is *not* the best way to do it. The reason is AGC in the radio. Any signal in the receiver passband can activate the AGC - and that is fine *if and only if* the strongest station in the receiver passband is the one you are working - usually that is not the case. The strong signal will reduce the receiver gain due to its AGC action and the station you are trying to QSO with will be reduced along with it. Overload of the DAC by the strong signals is another similar consideration - fortunately, the K3 employs a hardware AGC ahead of the DAC to avoid just that possibility. The DSP ADC can handle an S9+20 signal without overload, but there are signals stronger than that even in the sub-bands commonly used for digital. Using a narrow passband for data modes allows one to avoid that situation. Yes, one must tune with the VFO to place the desired station inside the receiver passband, but the possibility of a QRM free QSO is much greater with the narrow passband. Just because the software application can display a 4 kHz slice of the spectrum is not sufficient reason to use a wide receiver passband IMHO. Elecraft may well consider it just because some folks want to operate that way, but it certainly does not make much sense to me. ___ 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] Mildly confused - Assumed filter width and what I see in waterfall do not match
I guess my basic answer, is that should be my choice, not the radio firmware. If I want to run 4 (or say, 10khz) into my computer (and out) that should be my choice. After all, how is an SDR all that different. Again, I suspect this is a oversight in the firmware, not a design choice. Why should such a flexible radio be hobbled in this manner? (assuming, of course, that it is actually limited as such, as opposed to me setting it up wrong :) ). --- On Wed, 1/7/09, Bob Cunnings bob.cunni...@gmail.com wrote: From: Bob Cunnings bob.cunni...@gmail.com Subject: Re: [Elecraft] Mildly confused - Assumed filter width and what I see in waterfall do not match To: elecraft@mailman.qth.net Date: Wednesday, January 7, 2009, 8:59 PM Disabling the AGC in the K3 certainly does do the trick in terms of preventing strong signals in the passband from reducing receiver gain and thus affecting the weaker signal I'm decoding - that's exactly why I do it. As for ADC overload -that's a risk I'm well aware of but most of the time it's a non-issue, for me at least. If it happened I would react to it, but I rarely encounter signals in the passband at anywhere near the level to cause trouble of that sort. Bob NW8L On Wed, Jan 7, 2009 at 6:23 PM, Don Wilhelm w3...@embarqmail.com wrote: Bob, That will do the trick in an analog only receiver, but a receiver like the K3 has an analog front end followed by an ADC and DSP processor. The trick is to keep from overloading the ADC - should that happen, the copy will be garbage. That situation is not limited to the K3 - overload of the soundcard ADC is also a possibility with equally bad results. I have to admit that in many cases, one can operate with a wide bandwidth with no problem, but when that strong signal enters the passband, the wide bandwidth possibilities are all over. I chose to take preventive measures before that happens. 73, Don W3FPR Bob Cunnings wrote: I simply disable AGC when I wish to run a wide receive bandwith with PSK31 for point and click tuning - precisely to avoid such a problem. Bob NW8L On Wed, Jan 7, 2009 at 5:44 PM, Don Wilhelm w3...@embarqmail.com wrote: Thomas, I will not answer your questions directly, BUT From an operational standpoint, using a wide bandwidth for data modes is *not* the best way to do it. The reason is AGC in the radio. Any signal in the receiver passband can activate the AGC - and that is fine *if and only if* the strongest station in the receiver passband is the one you are working - usually that is not the case. The strong signal will reduce the receiver gain due to its AGC action and the station you are trying to QSO with will be reduced along with it. Overload of the DAC by the strong signals is another similar consideration - fortunately, the K3 employs a hardware AGC ahead of the DAC to avoid just that possibility. The DSP ADC can handle an S9+20 signal without overload, but there are signals stronger than that even in the sub-bands commonly used for digital. Using a narrow passband for data modes allows one to avoid that situation. Yes, one must tune with the VFO to place the desired station inside the receiver passband, but the possibility of a QRM free QSO is much greater with the narrow passband. Just because the software application can display a 4 kHz slice of the spectrum is not sufficient reason to use a wide receiver passband IMHO. Elecraft may well consider it just because some folks want to operate that way, but it certainly does not make much sense to me. ___ 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
Re: [Elecraft] Mildly confused - Assumed filter width and what I see in waterfall do not match
Thomas, I believe you are mis-interpreting my response. It is not a limitation of the K3 that I am concerned about. I just believe that it is adverturesome to run with an extremely wide bandwidth 'just because it is possible'. I prefer to use a narrow bandwidth because it avoids a lot of potential problems such as overload of the system at several places - mainly the ADC portions. Yes, that should be your choice, up to the bandwidth that the radio provides. If you can convince the folks at Aptos to increase the available bandwidth for data modes, that is all well and good. I for one would not advocate that message because it has great potential to increase the customer support issues that would occur when more naive operators experience overload conditions or severe AGC pumping. If you wish to operate digital modes in ESSB mode, the K3 provides that capability - it is just not present in the current digital mode set of options. So you *do* have your choice, but not in the set of digital modes recommended for the K3. 73, Don W3FPR Thomas Bingenheimer wrote: I guess my basic answer, is that should be my choice, not the radio firmware. If I want to run 4 (or say, 10khz) into my computer (and out) that should be my choice. After all, how is an SDR all that different. Again, I suspect this is a oversight in the firmware, not a design choice. Why should such a flexible radio be hobbled in this manner? (assuming, of course, that it is actually limited as such, as opposed to me setting it up wrong :) ). --- On Wed, 1/7/09, Bob Cunnings bob.cunni...@gmail.com wrote: From: Bob Cunnings bob.cunni...@gmail.com Subject: Re: [Elecraft] Mildly confused - Assumed filter width and what I see in waterfall do not match To: elecraft@mailman.qth.net Date: Wednesday, January 7, 2009, 8:59 PM Disabling the AGC in the K3 certainly does do the trick in terms of preventing strong signals in the passband from reducing receiver gain and thus affecting the weaker signal I'm decoding - that's exactly why I do it. As for ADC overload -that's a risk I'm well aware of but most of the time it's a non-issue, for me at least. If it happened I would react to it, but I rarely encounter signals in the passband at anywhere near the level to cause trouble of that sort. Bob NW8L On Wed, Jan 7, 2009 at 6:23 PM, Don Wilhelm w3...@embarqmail.com wrote: Bob, That will do the trick in an analog only receiver, but a receiver like the K3 has an analog front end followed by an ADC and DSP processor. The trick is to keep from overloading the ADC - should that happen, the copy will be garbage. That situation is not limited to the K3 - overload of the soundcard ADC is also a possibility with equally bad results. I have to admit that in many cases, one can operate with a wide bandwidth with no problem, but when that strong signal enters the passband, the wide bandwidth possibilities are all over. I chose to take preventive measures before that happens. 73, Don W3FPR Bob Cunnings wrote: I simply disable AGC when I wish to run a wide receive bandwith with PSK31 for point and click tuning - precisely to avoid such a problem. Bob NW8L On Wed, Jan 7, 2009 at 5:44 PM, Don Wilhelm w3...@embarqmail.com wrote: Thomas, I will not answer your questions directly, BUT From an operational standpoint, using a wide bandwidth for data modes is *not* the best way to do it. The reason is AGC in the radio. Any signal in the receiver passband can activate the AGC - and that is fine *if and only if* the strongest station in the receiver passband is the one you are working - usually that is not the case. The strong signal will reduce the receiver gain due to its AGC action and the station you are trying to QSO with will be reduced along with it. Overload of the DAC by the strong signals is another similar consideration - fortunately, the K3 employs a hardware AGC ahead of the DAC to avoid just that possibility. The DSP ADC can handle an S9+20 signal without overload, but there are signals stronger than that even in the sub-bands commonly used for digital. Using a narrow passband for data modes allows one to avoid that situation. Yes, one must tune with the VFO to place the desired station inside the receiver passband, but the possibility of a QRM free QSO is much greater with the narrow passband. Just because the software application can display a 4 kHz slice of the spectrum is not sufficient reason to use a
Re: [Elecraft] Mildly confused - Assumed filter width and what Isee in waterfall do not match
I guess my basic answer, is that should be my choice, not the radio firmware. If I want to run 4 (or say, 10khz) into my computer (and out) that should be my choice. The K3 does not support an audio bandwidth higher than 4.2 KHz in ANY MODE. If you do some checking you will find the DSP's digital to analog converter effectively includes a 4.2 KHz brickwall filter ... even in AM mode with the bandwidth set to 5 KHz (10 KHz IF). If you expect audio response above 4.2 KHz, you will need to convince Wayne and Lyle to relax the upper frequency limit. HOWEVER, for digital modes I'm not so sure that is a good idea. With sound cards sampling at 11025 Hz, the input audio needs to be band limited to 5.5 KHz maximum and 4.5 KHz offers a fair margin for safety to handle the occasional application that runs at 8 or 9 KHz. For AM - since the digital modes are not a consideration - it would be nice to have 5.5 or 6.0 KHz response. 73, ... Joe, W4TV -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Thomas Bingenheimer Sent: Wednesday, January 07, 2009 9:07 PM To: elecraft@mailman.qth.net; Bob Cunnings Subject: Re: [Elecraft] Mildly confused - Assumed filter width and what Isee in waterfall do not match I guess my basic answer, is that should be my choice, not the radio firmware. If I want to run 4 (or say, 10khz) into my computer (and out) that should be my choice. After all, how is an SDR all that different. Again, I suspect this is a oversight in the firmware, not a design choice. Why should such a flexible radio be hobbled in this manner? (assuming, of course, that it is actually limited as such, as opposed to me setting it up wrong :) ). --- On Wed, 1/7/09, Bob Cunnings bob.cunni...@gmail.com wrote: From: Bob Cunnings bob.cunni...@gmail.com Subject: Re: [Elecraft] Mildly confused - Assumed filter width and what I see in waterfall do not match To: elecraft@mailman.qth.net Date: Wednesday, January 7, 2009, 8:59 PM Disabling the AGC in the K3 certainly does do the trick in terms of preventing strong signals in the passband from reducing receiver gain and thus affecting the weaker signal I'm decoding - that's exactly why I do it. As for ADC overload -that's a risk I'm well aware of but most of the time it's a non-issue, for me at least. If it happened I would react to it, but I rarely encounter signals in the passband at anywhere near the level to cause trouble of that sort. Bob NW8L On Wed, Jan 7, 2009 at 6:23 PM, Don Wilhelm w3...@embarqmail.com wrote: Bob, That will do the trick in an analog only receiver, but a receiver like the K3 has an analog front end followed by an ADC and DSP processor. The trick is to keep from overloading the ADC - should that happen, the copy will be garbage. That situation is not limited to the K3 - overload of the soundcard ADC is also a possibility with equally bad results. I have to admit that in many cases, one can operate with a wide bandwidth with no problem, but when that strong signal enters the passband, the wide bandwidth possibilities are all over. I chose to take preventive measures before that happens. 73, Don W3FPR Bob Cunnings wrote: I simply disable AGC when I wish to run a wide receive bandwith with PSK31 for point and click tuning - precisely to avoid such a problem. Bob NW8L On Wed, Jan 7, 2009 at 5:44 PM, Don Wilhelm w3...@embarqmail.com wrote: Thomas, I will not answer your questions directly, BUT From an operational standpoint, using a wide bandwidth for data modes is *not* the best way to do it. The reason is AGC in the radio. Any signal in the receiver passband can activate the AGC - and that is fine *if and only if* the strongest station in the receiver passband is the one you are working - usually that is not the case. The strong signal will reduce the receiver gain due to its AGC action and the station you are trying to QSO with will be reduced along with it. Overload of the DAC by the strong signals is another similar consideration - fortunately, the K3 employs a hardware AGC ahead of the DAC to avoid just that possibility. The DSP ADC can handle an S9+20 signal without overload, but there are signals stronger than that even in the sub-bands commonly used for digital. Using a narrow passband for data modes allows one to avoid that situation. Yes, one must tune with the VFO to place the desired station inside the receiver passband, but the possibility of a QRM free QSO is much greater with the narrow passband. Just because the software application can display a 4 kHz slice of the spectrum is not sufficient reason to use a wide receiver passband IMHO.
Re: [Elecraft] Mildly confused - Assumed filter width and what Isee in waterfall do not match
I would like to at least get the 4.2 khz mentioned - but in fact, I do not. My chief concern is that I should at least be able to use the full 4 khz waterfall that I can, in fact, get out of most other radios. --- On Wed, 1/7/09, Joe Subich, W4TV li...@subich.com wrote: From: Joe Subich, W4TV li...@subich.com Subject: RE: [Elecraft] Mildly confused - Assumed filter width and what Isee in waterfall do not match To: t...@yahoo.com, elecraft@mailman.qth.net, 'Bob Cunnings' bob.cunni...@gmail.com Date: Wednesday, January 7, 2009, 10:15 PM I guess my basic answer, is that should be my choice, not the radio firmware. If I want to run 4 (or say, 10khz) into my computer (and out) that should be my choice. The K3 does not support an audio bandwidth higher than 4.2 KHz in ANY MODE. If you do some checking you will find the DSP's digital to analog converter effectively includes a 4.2 KHz brickwall filter ... even in AM mode with the bandwidth set to 5 KHz (10 KHz IF). If you expect audio response above 4.2 KHz, you will need to convince Wayne and Lyle to relax the upper frequency limit. HOWEVER, for digital modes I'm not so sure that is a good idea. With sound cards sampling at 11025 Hz, the input audio needs to be band limited to 5.5 KHz maximum and 4.5 KHz offers a fair margin for safety to handle the occasional application that runs at 8 or 9 KHz. For AM - since the digital modes are not a consideration - it would be nice to have 5.5 or 6.0 KHz response. 73, ... Joe, W4TV -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Thomas Bingenheimer Sent: Wednesday, January 07, 2009 9:07 PM To: elecraft@mailman.qth.net; Bob Cunnings Subject: Re: [Elecraft] Mildly confused - Assumed filter width and what Isee in waterfall do not match I guess my basic answer, is that should be my choice, not the radio firmware. If I want to run 4 (or say, 10khz) into my computer (and out) that should be my choice. After all, how is an SDR all that different. Again, I suspect this is a oversight in the firmware, not a design choice. Why should such a flexible radio be hobbled in this manner? (assuming, of course, that it is actually limited as such, as opposed to me setting it up wrong :) ). --- On Wed, 1/7/09, Bob Cunnings bob.cunni...@gmail.com wrote: From: Bob Cunnings bob.cunni...@gmail.com Subject: Re: [Elecraft] Mildly confused - Assumed filter width and what I see in waterfall do not match To: elecraft@mailman.qth.net Date: Wednesday, January 7, 2009, 8:59 PM Disabling the AGC in the K3 certainly does do the trick in terms of preventing strong signals in the passband from reducing receiver gain and thus affecting the weaker signal I'm decoding - that's exactly why I do it. As for ADC overload -that's a risk I'm well aware of but most of the time it's a non-issue, for me at least. If it happened I would react to it, but I rarely encounter signals in the passband at anywhere near the level to cause trouble of that sort. Bob NW8L On Wed, Jan 7, 2009 at 6:23 PM, Don Wilhelm w3...@embarqmail.com wrote: Bob, That will do the trick in an analog only receiver, but a receiver like the K3 has an analog front end followed by an ADC and DSP processor. The trick is to keep from overloading the ADC - should that happen, the copy will be garbage. That situation is not limited to the K3 - overload of the soundcard ADC is also a possibility with equally bad results. I have to admit that in many cases, one can operate with a wide bandwidth with no problem, but when that strong signal enters the passband, the wide bandwidth possibilities are all over. I chose to take preventive measures before that happens. 73, Don W3FPR Bob Cunnings wrote: I simply disable AGC when I wish to run a wide receive bandwith with PSK31 for point and click tuning - precisely to avoid such a problem. Bob NW8L On Wed, Jan 7, 2009 at 5:44 PM, Don Wilhelm w3...@embarqmail.com wrote: Thomas, I will not answer your questions directly, BUT From an operational standpoint, using a wide bandwidth for data modes is *not* the best way to do it. The reason is AGC in the radio. Any signal in the receiver passband can activate the AGC - and that is fine *if and only if* the strongest station in the receiver passband is the one you are working - usually that is not the case. The strong signal will reduce the receiver gain due to its AGC action and the station you are trying to QSO with will be reduced along with it. Overload of the DAC by the
[Elecraft] K2KSB2XTLS mod question
My next project is to install the 14 crystals in the K2KSB2XTLS package == K2KSB2XTLS Matched Filter Crystals (14) For existing K2 and KSB2 combinations. == any one have any pointers, gotcha's, or other comments about this mod they would like to share before I get the iron hot? TIA -- GB 73 KA5OAI Sam Morgan http://linuxbasics.org Linux, the lifetime learning experience. ___ 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] K2 #6662 Control Board Resistance U6/2930 a tad too high
Jeff Wandling W7BRS-2 wrote: I finished my Control board last night too, and had the same exact values for those test points. All the other test points were good according to the table too. I start the next phase tonight. K2 #6665 is on my bench, but it doesn't know it's a 6665 yet. ;-) I saw Don's reply. Well good to know someone else has the same values. I started and finished the Front Panel tonight, checked out perfect. I half built a K2 about 10 years ago when I first got into ham radio, before getting totally burdened by work. I sold that half built K2 some 8 years ago. I only made it as far as Alignment/Test part 1. Hopefully I make it farther this time ;-) --phil -- View this message in context: http://n2.nabble.com/K2--6662-Control-Board-Resistance-U6-29-30-a-tad-too-high-tp2121048p2126429.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
Re: [Elecraft] Mildly confused - Assumed filter width and what Iseein waterfall do not match
I would like to at least get the 4.2 khz mentioned - but in fact, I do not. I don't know why you can't get 4 KHz if you have a 6 KHz roofing filter enabled for receive in the DATA modes. I see 200 Hz to 4200 Hz with my audio spectrum analyzer software on the Line Out port (although the Line Out has more low frequency roll off than I would like between 200 Hz and 500 Hz). Set BW (WIDTH) = 4.00 and FC (SHIFT) = 2.20 and you should have 200 - 4200 Hz available to your waterfall. I have it with my FM filter (even when I tell the K3 configuration the FM filter is 6 KHz wide). In the direct e-mail, I've attached a waterfall that shows two CW signals (can't hear any PSK31 tonight) one at 1 KHZ and the other at 4 KHz with several weaker signals in between. You can also see the significant roll-off in the K3 Line Out response (-26 dB from 800 Hz to 100 Hz) below 500 Hz. 73, ... Joe, W4TV -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Thomas Bingenheimer Sent: Wednesday, January 07, 2009 11:01 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] Mildly confused - Assumed filter width and what Iseein waterfall do not match I would like to at least get the 4.2 khz mentioned - but in fact, I do not. My chief concern is that I should at least be able to use the full 4 khz waterfall that I can, in fact, get out of most other radios. --- On Wed, 1/7/09, Joe Subich, W4TV li...@subich.com wrote: From: Joe Subich, W4TV li...@subich.com Subject: RE: [Elecraft] Mildly confused - Assumed filter width and what Isee in waterfall do not match To: t...@yahoo.com, elecraft@mailman.qth.net, 'Bob Cunnings' bob.cunni...@gmail.com Date: Wednesday, January 7, 2009, 10:15 PM I guess my basic answer, is that should be my choice, not the radio firmware. If I want to run 4 (or say, 10khz) into my computer (and out) that should be my choice. The K3 does not support an audio bandwidth higher than 4.2 KHz in ANY MODE. If you do some checking you will find the DSP's digital to analog converter effectively includes a 4.2 KHz brickwall filter ... even in AM mode with the bandwidth set to 5 KHz (10 KHz IF). If you expect audio response above 4.2 KHz, you will need to convince Wayne and Lyle to relax the upper frequency limit. HOWEVER, for digital modes I'm not so sure that is a good idea. With sound cards sampling at 11025 Hz, the input audio needs to be band limited to 5.5 KHz maximum and 4.5 KHz offers a fair margin for safety to handle the occasional application that runs at 8 or 9 KHz. For AM - since the digital modes are not a consideration - it would be nice to have 5.5 or 6.0 KHz response. 73, ... Joe, W4TV -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Thomas Bingenheimer Sent: Wednesday, January 07, 2009 9:07 PM To: elecraft@mailman.qth.net; Bob Cunnings Subject: Re: [Elecraft] Mildly confused - Assumed filter width and what Isee in waterfall do not match I guess my basic answer, is that should be my choice, not the radio firmware. If I want to run 4 (or say, 10khz) into my computer (and out) that should be my choice. After all, how is an SDR all that different. Again, I suspect this is a oversight in the firmware, not a design choice. Why should such a flexible radio be hobbled in this manner? (assuming, of course, that it is actually limited as such, as opposed to me setting it up wrong :) ). --- On Wed, 1/7/09, Bob Cunnings bob.cunni...@gmail.com wrote: From: Bob Cunnings bob.cunni...@gmail.com Subject: Re: [Elecraft] Mildly confused - Assumed filter width and what I see in waterfall do not match To: elecraft@mailman.qth.net Date: Wednesday, January 7, 2009, 8:59 PM Disabling the AGC in the K3 certainly does do the trick in terms of preventing strong signals in the passband from reducing receiver gain and thus affecting the weaker signal I'm decoding - that's exactly why I do it. As for ADC overload -that's a risk I'm well aware of but most of the time it's a non-issue, for me at least. If it happened I would react to it, but I rarely encounter signals in the passband at anywhere near the level to cause trouble of that sort. Bob NW8L On Wed, Jan 7, 2009 at 6:23 PM, Don Wilhelm w3...@embarqmail.com wrote: Bob, That will do the trick in an analog only receiver, but a receiver like the K3 has an analog front end followed by an ADC and DSP processor. The trick is to keep from overloading the ADC - should that happen, the copy will be garbage. That
Re: [Elecraft] Notch control
On Wed, 07 Jan 2009 22:24:22 +, you wrote: While we're opening the notch topic, how about a truely narrow notch for CW-- maybe about 30Hz.? The present one is far too wide for most CW situations. One is running stations and another station starts up too close on one side. A narrow notch could be one more tool. Alternatively, fix the shift control to have the 10Hz steps requested by others when using narrow CW filters. 73 de Brian/K3KO [snip] I looked at the auto and manual notch on a waterfall once. You are right, it is wide notch. It's too broad for CW and almost too broad for SSB. I'm OK with the way the button works but would like to see the notch about 25% as wide as it is currently. And yes, I would also like to have 10hz steps for all the filter adjustments. Tom Hinson Childers, N5GE K3 #806, XV144, XV432 Mini-Modules http://www.eQSL.cc/Member.cfm?N5GE http://www.n5ge.com http://www.swotrc.net ___ 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
