Re: [Elecraft] K3, Mixw, Rigexpert, and Vista prob
Kenneth Waites wrote: The problem was a mixture of two versions of mixw. Now the only thing I still have to get working is the PTT so ESC key will toggle between TX and RX, I have it set up in the cat interface, but so far its not working. Now I think I may have to change something in the K3 PTT config items. I used to use MixW and I don't remember using the Esc key to toggle between TX and RX. If the K3 goes into TX when you click the TX button then there is nothing wrong with the way PTT is set up. If it is not allowing Esc to be used as a toggle between TX and RX it is probably Vista that is preventing it. MixW can be set up to use software commands to switch between TX and RX. Alternatively it can use one of the serial control lines (RTS and DTR). The two methods are mutually exclusive. Only if you have selected one of the latter options will you need to set the matching option in the K3 PTT menu. - Julian, G4ILO. K2 #392 K3 #222. http://www.g4ilo.com/ G4ILO's Shack http://www.ham-directory.com/ Ham Directoryhttp://www.g4ilo.com/kcomm.html KComm for Elecraft K2 and K3 -- View this message in context: http://n2.nabble.com/Re%3A-K3%2C-Mixw%2C-Rigexpert%2C-and-Vista-prob-tp2243574p2243948.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 and PSK
Lyle Johnson wrote: If you really must do this, you should probably set CONFIG:TX ALC OFF once you've adjusted your power level using the PWR control. Otherwise the ALC system will see the Tx output not being what was requested and will increase the gain, leading to power creep and all sorts of other problems. And a side effect is that when you next request power, you'll get alot more than you asked for because the ALC loop now believes the Tx chain gain is far less than it actually is. The ALC 5 bar level is the level to which all transmit system gains are balanced -- at least those that use any sort of audio as the ultimate source. If that's how it is supposed to work, why doesn't it REDUCE the gain when it sees the Tx output being MORE than what is requested? Because it doesn't. That's the point. In the latest Beta code I tried very hard to balance levels so that CONFIG:TXG VCE can be set to 0.0dB. This might have been affecting your power control issues. The trouble with this is that TXG VCE is an SSB mode adjustment. I don't have excessive power in SSB mode therefore I don't wish to reduce the TXG VCE. If there was a separate TXG setting for DATA as others have suggested on previous occasions, this might be the solution. Although at present, the minimum -3.0dB setting is not quite sufficient to get the output down to the correct level. quote? I did extensive testing with Olivia (125/8 through 2000/64) and WSPR to be sure the power levels are as requested and stable. At least on my K3, they seem to be. I check the power using a TUNE signal (pure sine wave). I would expect the output power to be the same in DATA as if the same tone is transmitted in SSB mode, and the same as when keying down in CW mode. - Julian, G4ILO. K2 #392 K3 #222. http://www.g4ilo.com/ G4ILO's Shack http://www.ham-directory.com/ Ham Directoryhttp://www.g4ilo.com/kcomm.html KComm for Elecraft K2 and K3 -- View this message in context: http://n2.nabble.com/K3-and-PSK-tp2236491p2244011.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] K3 aF mod
Hi all, Just about to fit my KDVR and while the rig is open, I am going to do a couple of mods. The AF mod requires 2 x 51R resistors. I don't have these in the box but I do have 56R, will these be ok or should I source 51R? It would seem close enough to me but I would appreciate the advice. Many thanks Ian -- Ian J Maude, G0VGS SysOp GB7MBC DX Cluster Member RSGB, GQRP, FISTS K2 #4044 |K3 #455 http://www.amateurradiotraining.org ___ 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] Need Help with XG1
At 12:46 PM 1/29/2009, Ron D'Eau Claire wrote: Wow, Pete, what a puzzle! You might make up a little probe consisting of a wire connected to your rx antenna input that you can touch to the circuit parts. If it has to be a long lead, use a bit of coax so random signal pickup won't confuse things. If your rx input is grounded for d-c, put a small cap in series - anything from .001 to .1 should be FB - to provide d-c isolation. Then touch it to the collector of Q1. You should find your S-9 signal. If not remove coupling cap C4 and try again. If you now have signal, there's a ground somewhere in the attenuator that is killing the signal. If not, you have a defective transistor (although that is high unlikely given that you've established that the voltage on the collector is correct.) Once you have the signal at the collector, start working through the attenuator until you lose it. A very neat idea, Ron - I'm going to use this one a lot! I lifted one leg of C4, the output coupling cap, and took a look at the signal level at the collector of the transistor oscillator. It is very, very low. Is it possible that the RF surge somehow damaged the crystal? I'm running out of components to replace here! 73, Pete ___ 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- pace of development
Elecraft are brilliant in responding to customers' wishes/needs so I wonder if I am alone in wanting a little time to let current developments and firmware upgrades show their worth? I have just taken my soldering to my two K3s to install upgrades (and then upgraded the firmware). However I looked at the latest beta firmware and feel I am slightly on a treadmill. I am very happy to wait say every six months and then pick up any Elecraft firmware changes. I know I am free to do this but I have the feeling that some requests for change are very individualistic and may well not reflect the views of the majority of K3 users. Time for reflection isn't always wasted. It might even allow me to have an up to date handbook for a while. 73 Nick G3RWF___ 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] Need Help with XG1
Pete, Have you measured the emitter resistor (R2)? I would suspect that more than the crystal. Since you do suspect the crystal, do you have any other crystal that you can substitute for it - it can be any fundamental crystal somewhere between 3.5 MHz and 15 MHz as long as you have a receiver that can hear it to evaluate the result. 73, Don W3FPR Pete Smith wrote: I lifted one leg of C4, the output coupling cap, and took a look at the signal level at the collector of the transistor oscillator. It is very, very low. Is it possible that the RF surge somehow damaged the crystal? I'm running out of components to replace here! 73, Pete ___ 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- pace of development
Nick G3RWF wrote: Elecraft are brilliant in responding to customers' wishes/needs so I wonder if I am alone in wanting a little time to let current developments and firmware upgrades show their worth? I have just taken my soldering to my two K3s to install upgrades (and then upgraded the firmware). However I looked at the latest beta firmware and feel I am slightly on a treadmill. I am very happy to wait say every six months and then pick up any Elecraft firmware changes. I know I am free to do this but I have the feeling that some requests for change are very individualistic and may well not reflect the views of the majority of K3 users. Time for reflection isn't always wasted. It might even allow me to have an up to date handbook for a while. If you are asking for a pause in the release of new firmware updates then I don't think that will find much favor with those who are still waiting for various features to be implemented. Nobody is required to install updates, and I personally don't unless the list of changes includes something I'm particularly interested in. It's in the nature of a forum like this that people will throw in their pet suggestions. I don't think anyone who does so expects their idea to get implemented straight away. Where I am inclined to agree with you is that the incorporation of features appears to occur in a haphzard fashion. Someone's idea may get acted on straight away whereas other things - even features documented in the manual since day 1 such as the ability to calibrate the 1ppm TCXO for extra stability - still remain on the to-do list. I think your concerns might be allayed if Elecraft were to do what a couple of developer types who I have had discussions with privately have suggested, namely publish a roadmap for firmware development. Then we could all see when the K3 is actually going to be finished, when our long-awaited feature is likely to be implemented, and people would have to justify why their pet idea should come higher up the list than something else. - Julian, G4ILO. K2 #392 K3 #222. http://www.g4ilo.com/ G4ILO's Shack http://www.ham-directory.com/ Ham Directoryhttp://www.g4ilo.com/kcomm.html KComm for Elecraft K2 and K3 -- View this message in context: http://n2.nabble.com/K3---pace-of-development-tp2244953p2245050.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] Need Help with XG1
Regrettably (hi), the emitter resistor is fine - very close to nominal. wish I had a crystal to substitute, but I don't, so maybe I need to get one from Elecraft - or just hang up the whole thing and get an XG-2. Thanks for thinking about this, Don. I hope people don't mind my continuing this on the list - I thought the archive might be useful to someone facing the same problem later on. 73, Pete N4ZR At 09:28 AM 1/30/2009, Don Wilhelm wrote: Pete, Have you measured the emitter resistor (R2)? I would suspect that more than the crystal. Since you do suspect the crystal, do you have any other crystal that you can substitute for it - it can be any fundamental crystal somewhere between 3.5 MHz and 15 MHz as long as you have a receiver that can hear it to evaluate the result. 73, Don W3FPR Pete Smith wrote: I lifted one leg of C4, the output coupling cap, and took a look at the signal level at the collector of the transistor oscillator. It is very, very low. Is it possible that the RF surge somehow damaged the crystal? I'm running out of components to replace here! 73, Pete ___ 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] Unlisted improvements with 2.80
LO adjustment is now smooth and does not jump from 0.00 to 0.20 like before. I would love the steps of LO changed from 100Hz to 50 Hz. Audio in headphones seems much louder. Ignacy -- View this message in context: http://n2.nabble.com/Unlisted-improvements-with-2.80-tp2245367p2245367.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- pace of development
Some changes are easy to implement. Some are hard and carry a risk of side effects. Let's look into some: 1. Change LO step from 100 to 50 Hz -- very easy to implement 2. Band stacking, e.g., pressing V_M+nr for the same band toggles the stacks, a menu defines the number of stacks -- easy once one figures how to implement it 2. Make 2nd RX band independent - medium IMHO 3. Allow 2nd RX use ANT2 when TX uses ANT1 and 2nd RX connected to AUX -- easy but potentially dangerous if timing not right 4. Narrow manual notch (200= 50 Hz) and faster automatic notch -- easy but a question whether to add menus 5. NTCH and NR under AGC loop - hard if not impossible with low power DSP; possibly with side effects in the first release There is a question to whom the changes are addressed. Ignacy Julian, G4ILO wrote: Nick G3RWF wrote: Elecraft are brilliant in responding to customers' wishes/needs so I wonder if I am alone in wanting a little time to let current developments and firmware upgrades show their worth? I have just taken my soldering to my two K3s to install upgrades (and then upgraded the firmware). However I looked at the latest beta firmware and feel I am slightly on a treadmill. I am very happy to wait say every six months and then pick up any Elecraft firmware changes. I know I am free to do this but I have the feeling that some requests for change are very individualistic and may well not reflect the views of the majority of K3 users. Time for reflection isn't always wasted. It might even allow me to have an up to date handbook for a while. If you are asking for a pause in the release of new firmware updates then I don't think that will find much favor with those who are still waiting for various features to be implemented. Nobody is required to install updates, and I personally don't unless the list of changes includes something I'm particularly interested in. It's in the nature of a forum like this that people will throw in their pet suggestions. I don't think anyone who does so expects their idea to get implemented straight away. Where I am inclined to agree with you is that the incorporation of features appears to occur in a haphzard fashion. Someone's idea may get acted on straight away whereas other things - even features documented in the manual since day 1 such as the ability to calibrate the 1ppm TCXO for extra stability - still remain on the to-do list. I think your concerns might be allayed if Elecraft were to do what a couple of developer types who I have had discussions with privately have suggested, namely publish a roadmap for firmware development. Then we could all see when the K3 is actually going to be finished, when our long-awaited feature is likely to be implemented, and people would have to justify why their pet idea should come higher up the list than something else. -- View this message in context: http://n2.nabble.com/K3---pace-of-development-tp2244953p2245468.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- pace of development
Having some experience with amateur repeater control software and other systems, it usually happens that some new features are particularly easy to implement while others are particularly hard. This is unrelated to a user's perception of complexity or desirability, and relates more to firmware design decisions that were made long ago. After a while, maintaining the existing software becomes more onerous than a complete redevelopment. This might explain some of the apparent hap-hazard release of K3 features.___ 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] Need Help with XG1
If you havn't checked it out already, check out the BNC connector. Mine had a problem internally and will cause problems. 73, Tony W7GO ___ 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- pace of development
In addition to risk and complexity, there are other factors that can have a bearing on what one would do next This list is a tremendous source of new ideas. Some of them are new novel and you want to stay open to those. Another factor is experience. The more we use our K3s the more we learn about what really needs to be fixed and what isn't so important. Some features that were envisioned (envisaged?) from the start may have seemed important but time has shown that they aren't so critical after all, but something unforeseen is. Combine that with the complexity and risk issues and you can have a seeming randomness to the changes. Of course, it could be that SW development at Elecraft is pretty much out of control. It could be that features are worked in random order depending on the whim of the implementer. It could be that things are done in an informal, undocumented, under-tested sort of way. It could be that the process relies almost entirely on the heroics of the individuals doing the work. In other words, they could be following the industry standard model for SW development. If so, I predict the rate of changes will slow as the code architecture becomes a limiting factor and as changes upon changes begin to take their toll. - Keith N1AS - - K3 711 - From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Monty Shultes Sent: Friday, January 30, 2009 11:04 AM To: Elecraft@mailman.qth.net Subject: Re: [Elecraft] K3- pace of development Having some experience with amateur repeater control software and other systems, it usually happens that some new features are particularly easy to implement while others are particularly hard. This is unrelated to a user's perception of complexity or desirability, and relates more to firmware design decisions that were made long ago. After a while, maintaining the existing software becomes more onerous than a complete redevelopment. This might explain some of the apparent hap-hazard release of K3 features. ___ 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 - diversity reception question
Maybe this has been discussed before, if so please forgive me... When I switch on the Sub receiver listening on the headphones, the right channel disappears for a short instance, then comes back but with a slightly lower volume than the left (main RX) channel. Is this intended? I use the Sub knob as balance pot. I have shared Ant 1 with the Sub receiver. 73! de Werner OE9FWV -- There are very few personal problems that cannot be solved through a suitable application of high explosives. 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
Re: [Elecraft] K3 - diversity reception question
Hi Werner, Use BSET to see what the sub receiver's PRE and ATTN settings are. They are independent of the main receiver's settings. They are also saved per-band. 73, Wayne N6KR On Jan 30, 2009, at 8:32 AM, Dr. Werner Furlan wrote: Maybe this has been discussed before, if so please forgive me... When I switch on the Sub receiver listening on the headphones, the right channel disappears for a short instance, then comes back but with a slightly lower volume than the left (main RX) channel. Is this intended? I use the Sub knob as balance pot. I have shared Ant 1 with the Sub receiver. --- 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] Need Help with XG1
Hi Pete, You are working much too hard. I designed the XG1 for Elecraft and if you send it to me, I'll repair it for you. 73, Bob, N6CM On Fri, Jan 30, 2009 at 6:34 AM, Pete Smith pete.n...@gmail.com wrote: Regrettably (hi), the emitter resistor is fine - very close to nominal. wish I had a crystal to substitute, but I don't, so maybe I need to get one from Elecraft - or just hang up the whole thing and get an XG-2. Thanks for thinking about this, Don. I hope people don't mind my continuing this on the list - I thought the archive might be useful to someone facing the same problem later on. 73, Pete N4ZR At 09:28 AM 1/30/2009, Don Wilhelm wrote: Pete, Have you measured the emitter resistor (R2)? I would suspect that more than the crystal. Since you do suspect the crystal, do you have any other crystal that you can substitute for it - it can be any fundamental crystal somewhere between 3.5 MHz and 15 MHz as long as you have a receiver that can hear it to evaluate the result. 73, Don W3FPR Pete Smith wrote: I lifted one leg of C4, the output coupling cap, and took a look at the signal level at the collector of the transistor oscillator. It is very, very low. Is it possible that the RF surge somehow damaged the crystal? I'm running out of components to replace here! 73, Pete ___ 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 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- pace of development
Darwin, Keith wrote: Of course, it could be that SW development at Elecraft is pretty much out of control. It could be that features are worked in random order depending on the whim of the implementer. It could be that things are done in an informal, undocumented, under-tested sort of way. It could be that the process relies almost entirely on the heroics of the individuals doing the work. In other words, they could be following the industry standard model for SW development. If so, I predict the rate of changes will slow as the code architecture becomes a limiting factor and as changes upon changes begin to take their toll. Not :) There are five people responsible for software development at Elecraft. All of us are tasked with gradually improving not just the feature set but also the underlying structure, documentation, and regression test procedures. We all work very closely together, and have frequent discussions about which new features or improvements to work on. Many variables go into the equation, but the buck stops with Eric and myself. It's safe to say that our software and firmware get better with every release. Please keep sending suggestions, and don't pull any punches. We learn more from complaints than we do from praise, and we appreciate the great attitude of our customers. 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] K1 and PSK
Happy to report that my freshly built K1 is OTA Can someone direct me to information on how to hook up my SL1+ to the K1 to do PSK? I use an iMac and already have USB interface between it and the signalink. Need to know how to do PTT. Thanks, John AB8O ___ 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] Impossible mission? USB with the 13khz filter for PSK31on Digipan
OK now I am a little confused. I just took a look at the audio output from the K3 in AM and FM, and I cannot get more then the 4Khz out just as you said. Typical FM bandwidth is 5Khz, so the DSP really needs to be changed as in its current state the K3 is chopping off 1Khz of received signal in FM, or 20% of the bandwidth. I believe the situation is even worse for AMwhich I guess is what you were alluding to. Is there a way to completely disable the DSP? Is there a reason the rig was designed this way? It seems so out of character for an otherwise fine quality rig. 73, Tom --- On Thu, 1/29/09, Joe Subich, W4TV li...@subich.com wrote: From: Joe Subich, W4TV li...@subich.com Subject: RE: [Elecraft] Impossible mission? USB with the 13khz filter for PSK31on Digipan To: thomastum...@yahoo.com, elecraft@mailman.qth.net Date: Thursday, January 29, 2009, 5:39 PM I wonder why they setup the radio that waythats a limiting factor when using programs like CW skimmer which like Digipan decodes a 3Khz+ swath of CW stations all at once.. It looks like DigiPan will run/display up to 5500 Hz - that doesn't seem to be a significant benefit above the K3's 4200 Hz limit. CW Skimmer requires separate I/Q sources in order to do broadband decoding and that's not available from the K3 audio interface (Line Out). I don't know the DAC clock rate is but if possible it would be nice to be able to sretch the response to 5500 or 6000 Hz for occasional use with AM/SWL/etc. However, I'd rather see per mode EQ and some extensions to the CAT interface first. 73, ... Joe, W4TV -Original Message- From: Thomas Tumino [mailto:thomastum...@yahoo.com] Sent: Thursday, January 29, 2009 4:35 PM To: elecraft@mailman.qth.net; li...@subich.com Subject: RE: [Elecraft] Impossible mission? USB with the 13khz filter for PSK31on Digipan Unfortunately, despite specifically enabling the KFL3B-FM 13Khz filter in USB mode, I cannot get 13Khz of bandwidth in USB receive. As a matter of fact, I cannot seem to get much more then 4Khz of receive in USB receive mode. You will not see more than 4 KHz of audio in any mode. The DSP includes a brickwall cut-off at 4200 Hz in SSB, DATA, AM and FM with a lower (2800 Hz) cutoff in CW. 73, ... Joe, W4TV Joe, I wonder why they setup the radio that waythats a limiting factor when using programs like CW skimmer which like Digipan decodes a 3Khz+ swath of CW stations all at once.. 73-Tom-N2YTF -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Thomas Tumino Sent: Thursday, January 29, 2009 12:59 PM To: elecraft@mailman.qth.net Subject: [Elecraft] Impossible mission? USB with the 13khz filter for PSK31on Digipan Hi there, I am running my K3 with Digipan computer software on PSK 31. I also have a full complement of 5 filters in the K3, with the widest being the KFL3B-FM 13Khz filter. Because Digipan can receive many PSK signals at once (Multichannel Window), I would like to set my K3 to receive USB through the 13Khz filter. Unfortunately, despite specifically enabling the KFL3B-FM 13Khz filter in USB mode, I cannot get 13Khz of bandwidth in USB receive. As a matter of fact, I cannot seem to get much more then 4Khz of receive in USB receive mode. I can get the XFIL display to tell me I am receiving through the 13Khz filter, but only about 4Khz of audio will pass through (perhaps the DSP??). Am I missing something here, or is this just an oversight in firmware design? Multichannel simultaneous receive of a massive chunk of bandwidth is a great feature of Digipan that I would love to take advantage of with my K3. Does someone know how to receive USB at a 13Khz bandwidth with the K3? 73, Tom-N2YTF ___ 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] K1 and PSK
I think it's impossible to send PSK31 using the K1. PSK requires sending at least two tones, and the K1 is CW only -- just one tone. It is possible, in principle, to send Feld-Hell, but I don't know of any software that will do it -- the ones I know of are soundcard generated, like PSK. Receiving digital modes is easy, though -- just run a stereo cable from the external speaker plug on the K1 to sound-in on the iMac. CocoaModem is the best software I've found to decode. Peter N8MHD On 1/30/09, John Wiener ja...@fuse.net wrote: Happy to report that my freshly built K1 is OTA Can someone direct me to information on how to hook up my SL1+ to the K1 to do PSK? I use an iMac and already have USB interface between it and the signalink. Need to know how to do PTT. Thanks, John AB8O ___ 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] K1 and PSK
John, You need an SSB capable transmitter to do PSK (or any other soundcard based digital mode). The K1 is CW only. I recall there was one gentleman who was working on adding SSB to his K1, but I don't know what the results were - that was a year or two ago. 73, Don W3FPR John Wiener wrote: Happy to report that my freshly built K1 is OTA Can someone direct me to information on how to hook up my SL1+ to the K1 to do PSK? I use an iMac and already have USB interface between it and the signalink. Need to know how to do PTT. Thanks, John AB8O ___ 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] FM and AM Bandwidth
Typical FM bandwidth is 5Khz, so the DSP really needs to be changed as in its current state the K3 is chopping off 1Khz of received signal in FM, or 20% of the bandwidth. There is more than one FM standard in use in Amateur radio around the globe. In some parts of the U.S., 2 meter channels are on 20 kHz spacing, some are on 15 kHz spacing. In some parts of the world, channels are 12.5 kHz apart, or moving towards 12.5 kHz spacing. The rule of thumb for FM signals is that the bandwidth is (2 * deviation) + Fmod where Fmod is the highest audio frequency. This is an oversimplification, but serves to illustrate the idea. In the K3 we have a 13 kHz wide IF filter. By limiting deviation to 4.5 kHz and Fmod to 3 kHz, we occupy about 12 kHz. If we allowed 5 kHz audio and 5 kHz deviation, we'd occupy 15 kHz. Such operation leaves no room for frequency error or adjacent channel rejection in a 15 kHz channel region. By limiting the audio response to about 3 kHz, we ensure that we are compatible with existing channels and will be compatible with future narrower channels. In the case of AM, we will be increasing the upper audio frequency response. 73, Lyle KK7P ___ 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] FM and AM Bandwidth
No, Carson's rule is occupied bandwidth = 2*(deviation + maximum modulating frequency) For 5 KHz deviation and 3 KHz highest modulating frequency, bandwidth is 16 KHz. For 4.5 KHz and 3 KHz, it's 15 KHz, not 13. Jack K8ZOA Lyle Johnson wrote: Typical FM bandwidth is 5Khz, so the DSP really needs to be changed as in its current state the K3 is chopping off 1Khz of received signal in FM, or 20% of the bandwidth. There is more than one FM standard in use in Amateur radio around the globe. In some parts of the U.S., 2 meter channels are on 20 kHz spacing, some are on 15 kHz spacing. In some parts of the world, channels are 12.5 kHz apart, or moving towards 12.5 kHz spacing. The rule of thumb for FM signals is that the bandwidth is (2 * deviation) + Fmod where Fmod is the highest audio frequency. This is an oversimplification, but serves to illustrate the idea. In the K3 we have a 13 kHz wide IF filter. By limiting deviation to 4.5 kHz and Fmod to 3 kHz, we occupy about 12 kHz. If we allowed 5 kHz audio and 5 kHz deviation, we'd occupy 15 kHz. Such operation leaves no room for frequency error or adjacent channel rejection in a 15 kHz channel region. By limiting the audio response to about 3 kHz, we ensure that we are compatible with existing channels and will be compatible with future narrower channels. In the case of AM, we will be increasing the upper audio frequency response. 73, Lyle KK7P ___ 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] K1 and PSK
It sounds like LA0BX wrote a program to send Feld Hell using only CW and a simple interface. I've not tried it, but there's some interesting info here: http://www.qsl.net/zl1bpu/FUZZY/Feld.htm and a search for the LA0BX software itself (HS-V79709.zip) came up with this link: http://sharon.esrac.ele.tue.nl/mirrors/zl1bpu/FUZZY/software.html Scroll down about three fourths of the way to find the program link. 73, Dave AB7E Peter Wollan wrote: I think it's impossible to send PSK31 using the K1. PSK requires sending at least two tones, and the K1 is CW only -- just one tone. It is possible, in principle, to send Feld-Hell, but I don't know of any software that will do it -- the ones I know of are soundcard generated, like PSK. Receiving digital modes is easy, though -- just run a stereo cable from the external speaker plug on the K1 to sound-in on the iMac. CocoaModem is the best software I've found to decode. Peter N8MHD On 1/30/09, John Wiener ja...@fuse.net wrote: Happy to report that my freshly built K1 is OTA Can someone direct me to information on how to hook up my SL1+ to the K1 to do PSK? I use an iMac and already have USB interface between it and the signalink. Need to know how to do PTT. Thanks, John AB8O ___ 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 aF mod
Should be OK but I've got a couple of resistors of the correct value - I can post if required? Cheers, Paul M1PAF Ian Maude wrote: Hi all, Just about to fit my KDVR and while the rig is open, I am going to do a couple of mods. The AF mod requires 2 x 51R resistors. I don't have these in the box but I do have 56R, will these be ok or should I source 51R? It would seem close enough to me but I would appreciate the advice. Many thanks Ian -- Ian J Maude, G0VGS SysOp GB7MBC DX Cluster Member RSGB, GQRP, FISTS K2 #4044 |K3 #455 http://www.amateurradiotraining.org ___ 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/K3-aF-mod-tp2244217p2246461.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] FM and AM Bandwidth
Hello Jack! No, Carson's rule is occupied bandwidth = 2*(deviation + maximum modulating frequency)... You are correct. Thank you for pointing this out. This is all the more reason why we can't increase the FM audio passband. In fact, we limit the upper end to 2.8 kHz and rapidly roll off response to higher frequency audio components. Fortunately, even with pre-emphasis, the highest frequency components of a typical voice don't have a lot of energy at the highest frequencies, so the resulting occupied bandiwdth is probably a little less. Those of our customers in areas with tight channel spacing need to reduce their deviation consistent with common Amateur FM practice in their area. Use CONFIG:FM DEV to set the peak deviation. 73, Lyle KK7P ___ 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 LINE Out mixes KRX3 and main output?
Is it possible to control whether the sub rx goes to the line out or not? It seems that both main and sub rx are always going to line out; I guess they're on left/right channels? If not, I guess I need to make a cable to cut out one channel so I don't see both with my mono sound card line input. Leigh/WA5ZNU K3#51, K2#3121, KX1#712 ___ 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 KRX3 B SET and FREQ ENT
I wanted to set the KRX3 to one frequency and the main RX to another. So I had the SUB RX set and wanted to set main, so I used M-V M1 to recall a frequency for main, but that set SUB RX to some random frequency I happened to have in VFO B the day I programmed M-V M1. I thought, no problem I'll use B SET. So I did B SET FREQ ENT but it doesn't seem to allow direct entry of the SUB RX. The M-V behavior isn't unexpected but I was surprised that B SET FREQ ENT didn't work. Leigh/WA5ZNU K3#51 ___ 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] Watt Meter Behavior
Here, LP-100 shows 130W for the first few seconds when K3 is set to 100W on SSB only. It seems to do it only after being turned on and during the first transmission. Seemed to have been gone and coming with various releases. No big deal here as my amp is 2 x 3-500Z. Ignacy Jim - W6VAR wrote: My watt meter seems to behave strangely in SSB. I've run all the calibrations and have it hooked to the Elecraft W1 watt meter and 50 ohm dummy load. When set for 100 watts, I get 100 watts on both the K3 and the W1 on CW key down. On SSB, the K3 meter regularly exceeds 100 watts, pegging the 120 lines while the W1 peaks out at 100 watts. I've noticed this for several revision of firmware. I also just downloaded verson 2.8 and tried setting the SMTR PK to ON, but the peak reading doesn't seem to work anymore. Anyone else have this experience? Jim - W6VAR -- View this message in context: http://n2.nabble.com/Watt-Meter-Behavior-tp2243523p2246579.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 LINE Out mixes KRX3 and main output?
Leigh L. Klotz, Jr WA5ZNU wrote: Is it possible to control whether the sub rx goes to the line out or not? It seems that both main and sub rx are always going to line out; I guess they're on left/right channels? If not, I guess I need to make a cable to cut out one channel so I don't see both with my mono sound card line input. That doesn't quite make sense. If your line-in is really mono, the right channel would not be connected to anything. Are you sure it's not the software you're using that's mixing the two channels together ? Also check your audio recording volume control settings (assuming this is on Windoze) - maybe you're recording the Mono Mix instead of Line In ? ~Iain ___ 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 LINE Out mixes KRX3 and main output?
Sorry for the confusion on the sound card side: It's a stereo input, but I don't get software control of the balance or independent gain. It's not on Windows. The Griffin iMic device specs say stereo, but the driver appears to be supporting only mono gain controls. If I go to LIN OUT menu and tapping button 1 to get =PHONES then I can use the audio gain controls to control the mix, but if I use NOR mode LIN OUT then it's always mixed. Probably easiest for me to make a cable than (a) fix the driver or (b) ask for firmware changes. Leigh/WA5ZNU Leigh L. Klotz, Jr WA5ZNU wrote: Is it possible to control whether the sub rx goes to the line out or not? It seems that both main and sub rx are always going to line out; I guess they're on left/right channels? If not, I guess I need to make a cable to cut out one channel so I don't see both with my mono sound card line input. That doesn't quite make sense. If your line-in is really mono, the right channel would not be connected to anything. Are you sure it's not the software you're using that's mixing the two channels together ? Also check your audio recording volume control settings (assuming this is on Windoze) - maybe you're recording the Mono Mix instead of Line In ? ~Iain ___ 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] K3 LINE Out mixes KRX3 and main output?
When the SUB is turned on the Line Out audio is Main=left and Sub=Right. - 73, Greg - AB7R Whidbey Island WA NA-065 On Fri Jan 30 11:12 , Iain MacDonnell - N6ML sent: Leigh L. Klotz, Jr WA5ZNU wrote: Is it possible to control whether the sub rx goes to the line out or not? It seems that both main and sub rx are always going to line out; I guess they're on left/right channels? If not, I guess I need to make a cable to cut out one channel so I don't see both with my mono sound card line input. That doesn't quite make sense. If your line-in is really mono, the right channel would not be connected to anything. Are you sure it's not the software you're using that's mixing the two channels together ? Also check your audio recording volume control settings (assuming this is on Windoze) - maybe you're recording the Mono Mix instead of Line In ? ~Iain ___ 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 Diversity and AGC slope
I am getting some more experience with the K3 in diversity mode connected to horizontal and vertical antennas. I decided to change the AGC slope to 10 from the default 12. This gives me the ability to more easily distinguish vertical from horizontal paths, at 12 the AGC makes most of the signals equi-volume. I may reduce the slope further but slope of 10 is enough to make a difference. Mike Scott - AE6WA Tarzana, CA (DM04 / near LA) K3-100 #508/ KX1 #1311 ___ 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 LINE Out mixes KRX3 and main output?
I think the right place to fix it would be in whatever software is using the captured audio - the driver is OK, but the software needs to let you select channels you want. In lieu of that, an adapter cable makes sense... ~Iain Leigh L. Klotz, Jr WA5ZNU wrote: Sorry for the confusion on the sound card side: It's a stereo input, but I don't get software control of the balance or independent gain. It's not on Windows. The Griffin iMic device specs say stereo, but the driver appears to be supporting only mono gain controls. If I go to LIN OUT menu and tapping button 1 to get =PHONES then I can use the audio gain controls to control the mix, but if I use NOR mode LIN OUT then it's always mixed. Probably easiest for me to make a cable than (a) fix the driver or (b) ask for firmware changes. Leigh/WA5ZNU Leigh L. Klotz, Jr WA5ZNU wrote: Is it possible to control whether the sub rx goes to the line out or not? It seems that both main and sub rx are always going to line out; I guess they're on left/right channels? If not, I guess I need to make a cable to cut out one channel so I don't see both with my mono sound card line input. That doesn't quite make sense. If your line-in is really mono, the right channel would not be connected to anything. Are you sure it's not the software you're using that's mixing the two channels together ? Also check your audio recording volume control settings (assuming this is on Windoze) - maybe you're recording the Mono Mix instead of Line In ? ~Iain ___ 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] K3 KRX3 B SET and FREQ ENT
Leigh L. Klotz, Jr WA5ZNU wrote: I wanted to set the KRX3 to one frequency and the main RX to another. So I had the SUB RX set and wanted to set main, so I used M-V M1 to recall a frequency for main, but that set SUB RX to some random frequency I happened to have in VFO B the day I programmed M-V M1. The same applies when scanning. The sub-rx becomes inaccessible. When Independence Day arrives, will there be facilities to scan one receiver independently of the other, on a different band? I thought, no problem I'll use B SET. So I did B SET FREQ ENT but it doesn't seem to allow direct entry of the SUB RX. The M-V behavior isn't unexpected but I was surprised that B SET FREQ ENT didn't work. Good point. -- 73 from Ian GM3SEK ___ 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] Unlisted improvements with 2.80
--- On Fri, 1/30/09, Ignacy n...@arrl.net wrote: From: Ignacy n...@arrl.net Subject: [Elecraft] Unlisted improvements with 2.80 To: elecraft@mailman.qth.net Date: Friday, January 30, 2009, 8:31 AM LO adjustment is now smooth and does not jump from 0.00 to 0.20 like before. Doesn't work that way with my K3. It's still flaky...steps 0 - 0.2 - 0.3 - 0.4... 2.3 - 2.2 ... 0.3 - 0.2 - 0.1 - 0.0 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] FM and AM Bandwidth
Lyle Johnson wrote: In the case of AM, we will be increasing the upper audio frequency response. This is good news Lyle. I've been starting to enjoy what a great SWL radio the K3 is and a little more bandwidth will make it even greater! 73, Barry N1EU -- View this message in context: http://n2.nabble.com/Impossible-mission--USB-with-the-13khz-filter-for-PSK31-on-Digipan-tp2240355p2247107.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 - diversity reception question
hi Wayne, thank you for your answer and suggestion but - the difference in volume is much less than 10db. When I switch from Main to Sub the sound in my head shifts about 10 or 20 deg to the left. With the balance potentiometer I can correct it of course. First I thought my ears are different, but if I change the orientation of my headphones it is shifting to the other side. The main receiver is definitely a bit louder than the sub RX. (but less than 10dB PRE or ATT) I have been listening with the stock 2.7 filters in Main and Sub btw. 73! de Werner OE9FWV wayne burdick schrieb am 30 Jan 2009 um 8:41: Hi Werner, Use BSET to see what the sub receiver's PRE and ATTN settings are. They are independent of the main receiver's settings. They are also saved per-band. 73, Wayne N6KR On Jan 30, 2009, at 8:32 AM, Dr. Werner Furlan wrote: Maybe this has been discussed before, if so please forgive me... When I switch on the Sub receiver listening on the headphones, the right channel disappears for a short instance, then comes back but with a slightly lower volume than the left (main RX) channel. Is this intended? I use the Sub knob as balance pot. I have shared Ant 1 with the Sub receiver. --- http://www.elecraft.com -- What has four legs and an arm? A happy pit bull. 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] Suggestion
Hi Eric and Wayne, Since you asked, may I suggest something which may be silly. We all know the VFO B knob changes the menu items and the main tuning knob does the changing within the menu. I make the mistake all the time getting them reversed.. my problem which I can live with, but wonder if they can be reversed? Am I the only K3 bloke who does this? Thanks fellows. With a suggestion like this it must mean all the important stuff is a done deal. 73, lynn W4NL ___ 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 - diversity reception question
Maybe you have (or need?) different filter gains between the main and sub filters? 73 -- Joe KB8AP On Jan 30, 2009, at 8:32 AM, Dr. Werner Furlan wrote: Maybe this has been discussed before, if so please forgive me... When I switch on the Sub receiver listening on the headphones, the right channel disappears for a short instance, then comes back but with a slightly lower volume than the left (main RX) channel. Is this intended? I use the Sub knob as balance pot. I have shared Ant 1 with the Sub receiver. 73! de Werner OE9FWV ___ 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 - diversity reception question
Dr. Werner Furlan wrote: hi Wayne, thank you for your answer and suggestion but - the difference in volume is much less than 10db. Using the MAIN antenna for the subreceiver switches in a -3 dB pad, which is required to split the path to the two receivers. This results in about a 3 dB signal attenuation in both. This may be part of what you're hearing. There also may be slight differences in overall path gain between the two receivers, even when configured identically. Here are some contributing factors: 1. band-pass filter alignment and losses 2. 1st mixer loss 3. crystal filter loss 4. crystal filter ripple 5. physical alignment of the SUB AF control (when used as main/sub BALANCE) 6. ears It's quite plausible that overall receive gain could, therefore, differ by a few dB between main and sub receivers. You could use the K3's built-in true-RMS AF voltmeter functions to determine the exact amount, on each band (AFV/dBV). 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] Suggestion
-Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft- boun...@mailman.qth.net] On Behalf Of Lynn Lamb, W4NL Sent: Friday, January 30, 2009 1:25 PM To: Elecraft Reflector Subject: [Elecraft] Suggestion We all know the VFO B knob changes the menu items and the main tuning knob does the changing within the menu. I make the mistake all the time getting them reversed.. my problem which I can live with, but wonder if they can be reversed? Am I the only K3 bloke who does this? I was thinking the same thing yesterday. A button you can tap to undo the last bone headed adjustment! Adam - ka7ark ___ 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] FSK problem with my K3
Wayne, Thanks for the 2.81 revision, I will load it tonight. I loaded up windows xp and ran ran mmtty using fsk to the K3 and receiving good print on my K2. The problem is the pseudofsk output in fldigi!Has to be bad data being generated within the program. The diddle does not sound right. Don, I had a good 4 volts out of the doubler circuit more than adequate for the 'keying' transistor. Thanks to both you and Don for your help. I will use ASFK until Dave provides a fix for fldigi. Jerry, N2UZ snip... My problem is that I have the wrong polarity coming out of my rtty program (fldigi under linux). It is hooked up to pin 1 of the ACC 15 pin connector. It is changing polarity fine (looking at it with my oscope. How can I invert it in the K3? I tried the CONFIG param FSK POL and that does not do it. I read an email on the archives saying that the config item FSK POL does not work. If that is the case, when will it be fixed? I have the latest code 2.78. On the air I get no print from other hams. As a test I use my K2 with another pc to check and ASFK is fine by garbage with FSK. ___ 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] Suggestion
Hi Lynn, It helps to think of it in this way: - the large knob on the left controls what's on the large display that's shifted to the left - the small knob on the right controls what's on the small display that's shifted the right To change it now would cause a huge amount of turmoil, discontent, documentation changes, and endless firmware revisions, so we simply can't do this. Making it a menu selection would be even worse. We had a target size in mind for the K3, and I believe we've optimized the UI within those constraints. Any suggestions other than this will be entertained :) 73, Wayne N6KR Lynn Lamb, W4NL wrote: We all know the VFO B knob changes the menu items and the main tuning knob does the changing within the menu. I make the mistake all the time getting them reversed.. my problem which I can live with, but wonder if they can be reversed? ... --- 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] FM and AM Bandwidth
On Jan 30, 2009, at 1:11 PM, Barry N1EU wrote: Lyle Johnson wrote: In the case of AM, we will be increasing the upper audio frequency response. This is good news Lyle. I've been starting to enjoy what a great SWL radio the K3 is and a little more bandwidth will make it even greater! Meanwhile, try using SSB to copy AM signals. This uses the same crystal filter (6 kHz) but allows for around 4 kHz of AF bandwidth. 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] Unlisted improvements with 2.80
This is on my list for review after I complete the sub receiver band-independence changes. 73, Wayne N6KR Wes Stewart wrote: LO adjustment is now smooth and does not jump from 0.00 to 0.20 like before. Doesn't work that way with my K3. --- 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] K3 KRX3 B SET and FREQ ENT
On Jan 30, 2009, at 12:37 PM, Ian White GM3SEK wrote: When Independence Day arrives, will there be facilities to scan one receiver independently of the other, on a different band? Scanning and text decode/display will still be usable only with the main receiver, initially. 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] Suggestion
Thanks Wayne.. I completely understand, no problem. Thanks for the reply. 73, lynn - Original Message - From: wayne burdick n...@elecraft.com To: Lynn Lamb, W4NL w...@charter.net Cc: Elecraft Reflector Elecraft@mailman.qth.net Sent: Friday, January 30, 2009 4:41 PM Subject: Re: [Elecraft] Suggestion Hi Lynn, It helps to think of it in this way: - the large knob on the left controls what's on the large display that's shifted to the left - the small knob on the right controls what's on the small display that's shifted the right To change it now would cause a huge amount of turmoil, discontent, documentation changes, and endless firmware revisions, so we simply can't do this. Making it a menu selection would be even worse. We had a target size in mind for the K3, and I believe we've optimized the UI within those constraints. Any suggestions other than this will be entertained :) 73, Wayne N6KR Lynn Lamb, W4NL wrote: We all know the VFO B knob changes the menu items and the main tuning knob does the changing within the menu. I make the mistake all the time getting them reversed.. my problem which I can live with, but wonder if they can be reversed? ... --- 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 No virus found in this incoming message. Checked by AVG - http://www.avg.com Version: 8.0.176 / Virus Database: 270.10.15/1924 - Release Date: 1/29/2009 5:57 PM ___ 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] FM and AM Bandwidth
Lyle, others ... I'm a career two-way radio tech. I've been in the midst of amateur radio VHF/UHF FM since (almost) the beginning. The first 2M repeater in Florida was built in my shop. I've been Montana's frequency coordinator for 30+ years. In short, I think I'm qualified to enter into the FM deviation discussion. The industry's deviation standard is 4.5 kHz for today's 15 kHz channel spaced radios. Yes, there is a move to 12.5 kHz channel spacing in some services, but these (mostly) use digital techniques, and I don't for see this impacting any K3 users. Please consider this (+/- 4.5 kHz deviation) standard for the K3's FM mode. FWIW, when measured on Motorola's latest / greatest service monitor, my K3's (S/N 56 with a KFL3B FM filter and Ver. 2.80) transmitter deviates +/- 5.0 kHz on 52.525 with a menu setting of 4.0 kHz deviation. This is while using a robust, sustained F-o-u-r. (:-)) I didn't measure it on 10M FM. I won't enter into any discussion about ESSB, except to say most view a (transmitted) AM or SSB bandwith signal over 4.0 kHz wide to be excessive, discourteous and not in good amateur practice. 73! Ken Kopp - K0PP ___ 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] FM and AM Bandwidth
On Fri, Jan 30, 2009 at 9:45 PM, wayne burdick n...@elecraft.com wrote: On Jan 30, 2009, at 1:11 PM, Barry N1EU wrote: Lyle Johnson wrote: In the case of AM, we will be increasing the upper audio frequency response. This is good news Lyle. I've been starting to enjoy what a great SWL radio the K3 is and a little more bandwidth will make it even greater! Meanwhile, try using SSB to copy AM signals. This uses the same crystal filter (6 kHz) but allows for around 4 kHz of AF bandwidth. Thanks Wayne. Yes, I do that sometimes! I also sometimes listen with K3/LP-PAN/Winrad because the 5.5Khz AF and sync detector combo make for real listening pleasure. I'd love an excuse to spring for a 13Khz roofing filter ;-) 73, Barry N1EU ___ 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] OT: FS Heil headset
I have an older Heil headset for sale. This is the headset where the headphone does not cover the entire ear. An HC-5 element is installed. It will also come with a HC-4 element, that can be installed. Does not include any adapters, but I just had it plugged into the K3, mic in the rear panel, headphones in front jack.EMail me off list (k...@arkayengravers.com) with any questions.73 Ken WB2ART ___ 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] OT: FS Heil headset
Sorry, forgot to mention price for the Heil headset in my previous message.It's $50 for all, plus UPS ground shipping.73Ken WB2ART ___ 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] FM and AM Bandwidth
Except that you did enter into the discussion of course. Why is bandwidth over 4Khz not in good amateur practice or discourteous on a warm Sunday afternoon when there are all of 3 or 4 stations within hearing on 75 or 160, or when 20 is otherwise mostly deader than a doorknob? These generic statements presume that if the radio gives someone the possibility of a wider bandwidth, that it will be used at 9:00pm local on 75M -- not that the guys overdriving their amps on that band are a problem :-) So why restrict it in the radio? Why should the manufacturer of the radio be compelled to make someone's version of a politically correct decision? Makes no sense. It's no different than arguing that there should be a 55 (or even 65) mph governor on the car you drive, Don't think that would go over so well, even for those who mostly putt along in town at 45 in 25 MPH zones :) My personal opinion? Too many people are too used to living in CCR controlled neighborhoods, and just presume that the color of their front door is somehow a group decision :-) Grant/NQ5T On Jan 30, 2009, at 4:41 PM, Ken Kopp wrote: L I won't enter into any discussion about ESSB, except to say most view a (transmitted) AM or SSB bandwith signal over 4.0 kHz wide to be excessive, discourteous and not in good amateur practice. 7 ___ 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 for sale - Switzerland Only
K3 #37 is heading for England, a FT-950 is heading over here as a replacement. Simon Brown, HB9DRV www.ham-radio-deluxe.com - Original Message - From: Simon (HB9DRV) As the firmware is maturing I have less need for my K3, so am offering it for sale in Switzerland only. 100W, ATU and 5 filters, unmodified, serial number 37. Available on loan for a few weeks for evaluation. Price ~ list minus 15%, can negotiate. There is no rush!___ 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 freq calibration...
Today, I could pick up the time signal on 20 MHz and did the setup with moving the probe between tp1 and tp2 to get the readings the same. It seems spot on now, and I was in a qso on 80 meters and was right on frequency on both TX and RX. Same report as far as the audio goes, restricted but clean. Its likely to sound a bit better with a real microphone. The station I was talking to sounded VERY nice using an external speaker. I have been told the variable xtal filter looks bad on ssb with spectrogram, and assume that is normal. I am really pleased with the K2 and the ssb part of it also. Who needs a K3! Brett N2DTS - Original Message - From: Don Wilhelm w3...@embarqmail.com To: Brett Gazdzinski brett.gazdzin...@verizon.net Cc: elecraft@mailman.qth.net Sent: Thursday, January 29, 2009 10:36 PM Subject: Re: [Elecraft] K2 freq calibration... Brett, You ask several questions, and I will delay on all of them except the one about calibration. You are relying on too many variables when setting the 4 MHz reference oscillator. To reduce those variables, use the N6KR method that is documented at http://www.elecraft.com/Apps/K2%20C22%20Adjust%20App%20Note.pdf. If you can tune WWV accurately, all other variables are cancelled out by that method. You may also find helpful information in the K2 Dial Calibration article on my website www.w3fpr.com. For your restriceted SSB audio, consider the comments in that article about the low frequency corner of the SSB filter passband carefully - 300 Hz is the 'magic' frequency. After you get the dial calibration correct (within 20 Hz or less), ask about the other items. 73, Don W3FPR Brett Gazdzinski wrote: I am having a hard time getting the frequency calibration on my K2 closer than 80 Hz. I set the osc to exactly 4Mhz, plus or minus a Hz on the pro3 switching between usb and lsb, it also agrees with the HP spectrum analyzer, I then run the cal pll, and the bfo calibration, and when tuning in ssb signals, they sound normal 80 or more Hz higher than they should (as tuned in on the pro 3). Is this as good as it gets on ssb? I have compared CW signals between the two rigs and they are very close, within about 10 Hz on 80 meters anyway. It seems the freq counter, pll cal, and bfo all sort of interact, but if the freq counter calibration is spot on, why the 80 Hz difference? (80 Hz is as close as I have gotten it in many attempts) Also, is it normal for the non ssb filters to look SO bad on spectrogram?? I got the ssb option on Tuesday, it was done Tuesday night, the antenna tuner was done Wednesday, no problems with them, no missing parts, no issues, I made my first ssb contact yesterday on 80 meters using the hand mic from the pro 3. SSB from the K2 sounds good in the pro 3, the report I got said it sounded a bit restricted, the hand mic sounds poor on the pro 3... What would be a nice sounding microphone to use with the K2? Also, I have been thinking of taking down the home made G5RV and trying an alpha delta dx-lb plus (160 through 10), the G5RV does not seem to work as good as the 40 meter dipole on 40, and its likely worse on other bands... Anyone got anything bad to say about the dx-lb plus, I know its not as good as a full size 160 m antenna, but I have about 110 feet max between trees. I sure am enjoying the K2! Brett N2DTS ___ 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] IF output from Sub RX? Re: K3 KRX3 B SET and FREQ ENT
Since we're on the subject of the sub RX, what would it take to get IF out from the sub RX in addition to from the main RX? 73, doug ___ 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] Need Help with XG1
I had a similar problem with my XG-2 right after assembly, on one of its three frequencies. Measuring voltages etc. did not give a clue, so I finally took a crystal from my junk box and connected its terminals in parallel with the crystal on the board (simply making the Xtal leads touch the points on the back side of the board). This started full scale oscillation, so I determined the XG-2 crystal in question simply was bad. May have been bad all along or become defective during my assembly. Elecraft sent me a replacement crystal - which I actually haven't put in yet, but this appeared to be the problem. 73 - Kristinn, TF3KX Pete Smith wrote: I have an XG-1 Receiver Test Oscillator which I must have accidentally zapped with RF somehow (I don't know when) because the output resistors R6-8 were fried. I replaced them, as well as R4 and R5, C4 and the transistor. The slide switch in the output tests ok. When I turn the XG-1 on, I can very faintly hear its signal, so it appears that the oscillator is working, but the output level is nowhere near what it should be. Voltage at the top of C3 is 1.23 volts. Anyone have any ideas where else I could look? Elecraft tech support was helpful but ultimately gave up. 73, Pete N4ZR the World Contest Station Database is back, and updated daily www.conteststations.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 -- View this message in context: http://n2.nabble.com/Need-Help-with-XG1-tp2233099p2247697.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] K2 freq calibration...
Brett, What is the width of your OP1 filter? The initial ones were 2.1 kHz wide for best use with a QRP K2, then it was changed to 2.4 kHz for better fidelity. A 2.6 kHz width will sound even better. Elecraft offers a capacitor kit to allow you to change the width to either the 2.1, 2.4 or 2.6 kHz width. Yes, the variable filter looks a bit 'ratty' at wide widths, but if the filter passband is positioned properly (low frequency corner at 300 Hz), it provides a means of cutting out QRM while listening to SSB despite the great passband ripple. It is never used for transmitting SSB. 73, Don W3FPR Brett Gazdzinski wrote: Today, I could pick up the time signal on 20 MHz and did the setup with moving the probe between tp1 and tp2 to get the readings the same. It seems spot on now, and I was in a qso on 80 meters and was right on frequency on both TX and RX. Same report as far as the audio goes, restricted but clean. Its likely to sound a bit better with a real microphone. The station I was talking to sounded VERY nice using an external speaker. I have been told the variable xtal filter looks bad on ssb with spectrogram, and assume that is normal. I am really pleased with the K2 and the ssb part of it also. Who needs a K3! Brett N2DTS - Original Message - From: Don Wilhelm w3...@embarqmail.com To: Brett Gazdzinski brett.gazdzin...@verizon.net Cc: elecraft@mailman.qth.net Sent: Thursday, January 29, 2009 10:36 PM Subject: Re: [Elecraft] K2 freq calibration... Brett, You ask several questions, and I will delay on all of them except the one about calibration. You are relying on too many variables when setting the 4 MHz reference oscillator. To reduce those variables, use the N6KR method that is documented at http://www.elecraft.com/Apps/K2%20C22%20Adjust%20App%20Note.pdf. If you can tune WWV accurately, all other variables are cancelled out by that method. You may also find helpful information in the K2 Dial Calibration article on my website www.w3fpr.com. For your restriceted SSB audio, consider the comments in that article about the low frequency corner of the SSB filter passband carefully - 300 Hz is the 'magic' frequency. After you get the dial calibration correct (within 20 Hz or less), ask about the other items. 73, Don W3FPR Brett Gazdzinski wrote: I am having a hard time getting the frequency calibration on my K2 closer than 80 Hz. I set the osc to exactly 4Mhz, plus or minus a Hz on the pro3 switching between usb and lsb, it also agrees with the HP spectrum analyzer, I then run the cal pll, and the bfo calibration, and when tuning in ssb signals, they sound normal 80 or more Hz higher than they should (as tuned in on the pro 3). Is this as good as it gets on ssb? I have compared CW signals between the two rigs and they are very close, within about 10 Hz on 80 meters anyway. It seems the freq counter, pll cal, and bfo all sort of interact, but if the freq counter calibration is spot on, why the 80 Hz difference? (80 Hz is as close as I have gotten it in many attempts) Also, is it normal for the non ssb filters to look SO bad on spectrogram?? I got the ssb option on Tuesday, it was done Tuesday night, the antenna tuner was done Wednesday, no problems with them, no missing parts, no issues, I made my first ssb contact yesterday on 80 meters using the hand mic from the pro 3. SSB from the K2 sounds good in the pro 3, the report I got said it sounded a bit restricted, the hand mic sounds poor on the pro 3... What would be a nice sounding microphone to use with the K2? Also, I have been thinking of taking down the home made G5RV and trying an alpha delta dx-lb plus (160 through 10), the G5RV does not seem to work as good as the 40 meter dipole on 40, and its likely worse on other bands... Anyone got anything bad to say about the dx-lb plus, I know its not as good as a full size 160 m antenna, but I have about 110 feet max between trees. I sure am enjoying the K2! Brett N2DTS ___ 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] IF output from Sub RX? Re: K3 KRX3 B SET and FREQ ENT
Doug Faunt N6TQS +1-510-655-8604 wrote: Since we're on the subject of the sub RX, what would it take to get IF out from the sub RX in addition to from the main RX? W3SZ posted about that in the LP-Pan group: http://groups.yahoo.com/group/LP-PAN/message/2332 (don't know if you have to be a member of the group to read that) Basically: This is a brief summary of what I did with the KRX3: I used the Z1 as buffer amp inside the KRX3. I got +12V from a 12SA pad near to P86A. Power and RF connections to the Z1 were done from the underside of the Z1. I took IF output from KRX3 from P86A and used RG174U to take this to input of Z1. I mounted Z1 on an unused FL position using a 1/2 inch standoff. I mounted a dual female SMA connector in the REF hole at the bottom corner of the K3 just below the official IF out BNC. I then used a right angle premade small surplus coaxial cable to take the signal to the KRX3 and thus the Z1. I entered the KRX3 at the back left corner opposite to J92, because there was already an opening there. I ran the coax inside the KRX3 bottom shell, beneath the main KRX3 PCB. I brought it up to the Z1 by running it through an unused hole meant for an FL standoff. At first check, using the two subreceivers on the Flex5000 to receive the IF signals from the K3, the main K3 and the KRX3 subreceiver IF outputs seem to be equivalent. When constructing the Z1, I used the -U [Universal] options, not the K2 options. I chose to set it up for zero gain, and thus chose R907 to be 499 ohms, and R905 to be 4.7K, as per section 2.3.3 of the Z1 manual. HTH, ~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] AM and FM bandwidth
I have been doing AM as my only ham radio activity for the last 30 years, and enjoy it a lot. I use all equipment built by me, mostly my own designs, and able to run excessive power levels and bandwidths, but that is not how I run it. I restrict myself to weekend morning operation, and do limit the high frequencies to a sensible level, but there is rarely any reason to do so, the bands are almost empty. People want to ban AM, ban ESSB, and make everyone sound like they are talking on a cheap telephone. Well, I don't like contests, but when they are on, I do something else. If other people like them, then its fine in my book. If people want to get on and see how narrow they can go and still be understood, I don't have a problem with that. When the band is crowded, I would not think of getting on and being wide in any mode. I don't do DX, but since other people like to chase it, I don't want to bother them. I don't do digital modes, moon bounce, sstv, and other things, but think its great that people enjoy that stuff. There are plenty of people who just don't care about others and will operate poorly, and I suspect there are just as many that want to eliminate everything that they personally don't like/enjoy. I am glad most manufacturers are leaving the choice in the hands of the operator, I hear the flex radios are capable of very nice fidelity in every mode. I wonder why most hams I hear on 80 meters at night are SO unhappy, they hate AM, they hate the government, they hate contesters, they seem to hate everything. Brett N2DTS ___ 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] K1 and PSK
There is no provision for PSK with the K1. It was designed for cw ONLY with no way to inject the proper signals for PSK. The K2 with the SSB addition should do PSK just fine. 73, Sandy W5TVW - Original Message - From: John Wiener ja...@fuse.net To: Elecraft email email elecraft@mailman.qth.net Sent: Friday, January 30, 2009 11:08 AM Subject: [Elecraft] K1 and PSK Happy to report that my freshly built K1 is OTA Can someone direct me to information on how to hook up my SL1+ to the K1 to do PSK? I use an iMac and already have USB interface between it and the signalink. Need to know how to do PTT. Thanks, John AB8O ___ 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: 270.10.15/1924 - Release Date: 1/29/2009 5:57 PM ___ 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 freq calibration...
Don, I just got the K2 and ssb add on in the last 2 weeks. I don't think it said anything about the bandwidth other than what is in the manual that came with the ksb2, 2.3 KHz. It sure sounds nice on receive, and it seems to sound fine in the pro3 when I monitor it. Perhaps I just need a good microphone. What caps need to be changed to what in order to get 2.6? Brett N2DTS Brett, What is the width of your OP1 filter? The initial ones were 2.1 kHz wide for best use with a QRP K2, then it was changed to 2.4 kHz for better fidelity. A 2.6 kHz width will sound even better. Elecraft offers a capacitor kit to allow you to change the width to either the 2.1, 2.4 or 2.6 kHz width. Yes, the variable filter looks a bit 'ratty' at wide widths, but if the filter passband is positioned properly (low frequency corner at 300 Hz), it provides a means of cutting out QRM while listening to SSB despite the great passband ripple. It is never used for transmitting SSB. 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] K2 freq calibration...
Brett, If you just purchased the KSB2, your filter is 2.4 kHz width. If you want to change it to 2.6, download the manual of the SSBCAPKT from the Elecraft website. 73, Don W3FPR Brett Gazdzinski wrote: Don, I just got the K2 and ssb add on in the last 2 weeks. I don't think it said anything about the bandwidth other than what is in the manual that came with the ksb2, 2.3 KHz. It sure sounds nice on receive, and it seems to sound fine in the pro3 when I monitor it. Perhaps I just need a good microphone. What caps need to be changed to what in order to get 2.6? Brett N2DTS Brett, What is the width of your OP1 filter? The initial ones were 2.1 kHz wide for best use with a QRP K2, then it was changed to 2.4 kHz for better fidelity. A 2.6 kHz width will sound even better. Elecraft offers a capacitor kit to allow you to change the width to either the 2.1, 2.4 or 2.6 kHz width. Yes, the variable filter looks a bit 'ratty' at wide widths, but if the filter passband is positioned properly (low frequency corner at 300 Hz), it provides a means of cutting out QRM while listening to SSB despite the great passband ripple. It is never used for transmitting SSB. 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 No virus found in this incoming message. Checked by AVG - http://www.avg.com Version: 8.0.233 / Virus Database: 270.10.16/1925 - Release Date: 1/30/2009 7:37 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
Re: [Elecraft] FM and AM Bandwidth
I'd love an excuse to spring for a 13Khz roofing filter ;-) The 13 KHz roofing filter with 4.2 KHz maximum audio frequency sounds quite good now but I'm looking forward to a bit more high end when Lyle gets it done. 6 KHz would be a very good match to the 13 KHz filter but I'd be happy with 5.5 KHz. 73, ... Joe, W4TV -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Barry N1EU Sent: Friday, January 30, 2009 5:44 PM To: wayne burdick Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] FM and AM Bandwidth On Fri, Jan 30, 2009 at 9:45 PM, wayne burdick n...@elecraft.com wrote: On Jan 30, 2009, at 1:11 PM, Barry N1EU wrote: Lyle Johnson wrote: In the case of AM, we will be increasing the upper audio frequency response. This is good news Lyle. I've been starting to enjoy what a great SWL radio the K3 is and a little more bandwidth will make it even greater! Meanwhile, try using SSB to copy AM signals. This uses the same crystal filter (6 kHz) but allows for around 4 kHz of AF bandwidth. Thanks Wayne. Yes, I do that sometimes! I also sometimes listen with K3/LP-PAN/Winrad because the 5.5Khz AF and sync detector combo make for real listening pleasure. I'd love an excuse to spring for a 13Khz roofing filter ;-) 73, Barry N1EU ___ 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] FM and AM Bandwidth
I'm seeing 4.1Khz max audio frequency on AM with my 6Khz roofing filter. Perhaps Lyle is working a little magic? 73, Barry N1EU On Sat, Jan 31, 2009 at 2:00 AM, Joe Subich, W4TV li...@subich.com wrote: I'd love an excuse to spring for a 13Khz roofing filter ;-) The 13 KHz roofing filter with 4.2 KHz maximum audio frequency sounds quite good now but I'm looking forward to a bit more high end when Lyle gets it done. 6 KHz would be a very good match to the 13 KHz filter but I'd be happy with 5.5 KHz. 73, ... Joe, W4TV -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Barry N1EU Sent: Friday, January 30, 2009 5:44 PM To: wayne burdick Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] FM and AM Bandwidth On Fri, Jan 30, 2009 at 9:45 PM, wayne burdick n...@elecraft.com wrote: On Jan 30, 2009, at 1:11 PM, Barry N1EU wrote: Lyle Johnson wrote: In the case of AM, we will be increasing the upper audio frequency response. This is good news Lyle. I've been starting to enjoy what a great SWL radio the K3 is and a little more bandwidth will make it even greater! Meanwhile, try using SSB to copy AM signals. This uses the same crystal filter (6 kHz) but allows for around 4 kHz of AF bandwidth. Thanks Wayne. Yes, I do that sometimes! I also sometimes listen with K3/LP-PAN/Winrad because the 5.5Khz AF and sync detector combo make for real listening pleasure. I'd love an excuse to spring for a 13Khz roofing filter ;-) 73, Barry N1EU ___ 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] Impossible mission? USB with the 13khz filter for PSK31on Digipan
I can only speak for Yaesu and Icom gear, but Yaesu rigs specify 5Khz transmit FM in their manuals and in the Icom 706MKIIG service manual states FM deviation is adjusted for 4.5Khz. There is a BIG difference between FM deviation and maximum modulating frequency (audio response). I was speaking specifically to maximum modulating frequency. As Lyle has said elsewhere, the maximum modulating frequency in the K3 is limited to about 2.8 KHz - in all modes except ESSB - which results in an occupied bandwidth of about 15.5 KHz with 5 KHz of deviation for FM. -Original Message- From: Thomas Tumino [mailto:thomastum...@yahoo.com] Sent: Friday, January 30, 2009 1:33 PM To: li...@subich.com Subject: RE: [Elecraft] Impossible mission? USB with the 13khz filter for PSK31on Digipan No, typical transmitted bandwidth for communications use - including FM is about 100 Hz to 3000 Hz. I can only speak for Yaesu and Icom gear, but Yaesu rigs specify 5Khz transmit FM in their manuals and in the Icom 706MKIIG service manual states FM deviation is adjusted for 4.5Khz. I would assume this was the standard for all Yaesu and Icom gear at least. Some Yaesu rigs do have a special FM-N transmit mode of 2.5 Khz, similar to FRS radios, but I think that mode is the exception and not the rule. I think the DSP receive limit of 4Khz should at least be mentioned in the K3 materials (or perhaps it is and I missed it?). This bothers me as really I feel FM and AM are most regularly used to enjoy audio of a better quality then SSB audio, and a 4Khz limit cuts down on that a bit. 73 to all and thanks for your help, Tom-N2YTF ___ 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 Sub Rx idea
I have been using the K3 sub rx for a while now. What I would like to see is a totally interchangeable main and sub. I want to be able to switch sub for main in a way that the sub rx is acting like the main without a shadow of a difference. Right now if I press Sub I can change sub rx settings but I can't change frequency for example. I would like to be able to operate as if the Sub were main and the Main were Sub and vice versus perhaps by pressing a single button. Mike Scott AE6WA Tarzana, CA K3/100 SN508 ___ 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 Sub Rx idea
Hmmm... Try A/B ??? Greg -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net]on Behalf Of Mike Scott Sent: Friday, January 30, 2009 6:40 PM To: elecraft@mailman.qth.net Subject: [Elecraft] K3 Sub Rx idea I have been using the K3 sub rx for a while now. What I would like to see is a totally interchangeable main and sub. I want to be able to switch sub for main in a way that the sub rx is acting like the main without a shadow of a difference. Right now if I press Sub I can change sub rx settings but I can't change frequency for example. I would like to be able to operate as if the Sub were main and the Main were Sub and vice versus perhaps by pressing a single button. Mike Scott AE6WA Tarzana, CA K3/100 SN508 ___ 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 note of Thanks
The amount of thought put into the K3's ergonomics shows why Elecraft is the leading supplier of high quality products. I have had my K3 S/N 2536 since January 9th. In addition to providing an intuitive set of controls you even included LCD brightness and ADJ controls. BRAVO!! 73, Sid K3SX ___ 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 Sub Rx idea
I'm certain Eric remembers that I asked him the same thing at Dayton when they first showed the K3... flip all the parameters back and forth between the two receivers... or something like that ... but we will have to wait in line for more important things...for a while bill At 08:40 PM 1/30/2009, Mike Scott wrote: Content-Type: multipart/alternative; boundary==_NextPart_000_000F_01C9830A.3978CEE0 Content-Language: en-us I have been using the K3 sub rx for a while now. What I would like to see is a totally interchangeable main and sub. I want to be able to switch sub for main in a way that the sub rx is acting like the main without a shadow of a difference. Right now if I press Sub I can change sub rx settings but I can't change frequency for example. I would like to be able to operate as if the Sub were main and the Main were Sub and vice versus perhaps by pressing a single button. Mike Scott AE6WA Tarzana, CA K3/100 SN508 ___ 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] K1 and PSK
John, Try the following website to convert your K1 from CW only to SSB. http://it.geocities.com/giulianoi0cg/k1_page.html Cheers, Colin - AC0S From: John Wiener ja...@fuse.net Can someone direct me to information on how to hook up my SL1+ to the K1 to do PSK? Thanks, John AB8O ___ 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] Impossible mission? USB with the 13khz filter for PSK31on Digipan
I can only speak for Yaesu and Icom gear, but Yaesu rigs specify 5Khz transmit FM in their manuals and in the Icom 706MKIIG service manual states FM deviation is adjusted for 4.5Khz. There is a BIG difference between FM deviation and maximum modulating frequency (audio response). I was speaking specifically to maximum modulating frequency. As Lyle has said elsewhere, the maximum modulating frequency in the K3 is limited to about 2.8 KHz - in all modes except ESSB - which results in an occupied bandwidth of about 15.5 KHz with 5 KHz of deviation for FM. OK so are you saying that the K3 right now receives a maximum of FM 4Khz of AUDIO which translates into a received RF bandwidth of better then 5Khz, so there is no problem? If that is what you are saying then I think I got it now. 73, Tom -Original Message- From: Thomas Tumino [mailto:thomastum...@yahoo.com] Sent: Friday, January 30, 2009 1:33 PM To: li...@subich.com Subject: RE: [Elecraft] Impossible mission? USB with the 13khz filter for PSK31on Digipan No, typical transmitted bandwidth for communications use - including FM is about 100 Hz to 3000 Hz. I can only speak for Yaesu and Icom gear, but Yaesu rigs specify 5Khz transmit FM in their manuals and in the Icom 706MKIIG service manual states FM deviation is adjusted for 4.5Khz. I would assume this was the standard for all Yaesu and Icom gear at least. Some Yaesu rigs do have a special FM-N transmit mode of 2.5 Khz, similar to FRS radios, but I think that mode is the exception and not the rule. I think the DSP receive limit of 4Khz should at least be mentioned in the K3 materials (or perhaps it is and I missed it?). This bothers me as really I feel FM and AM are most regularly used to enjoy audio of a better quality then SSB audio, and a 4Khz limit cuts down on that a bit. 73 to all and thanks for your help, Tom-N2YTF ___ 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] Impossible mission? USB with the 13khz filter for PSK31on Digipan
OK so are you saying that the K3 right now receives a maximum of FM 4Khz of AUDIO which translates into a received RF bandwidth of better then 5Khz, so there is no problem? If that is what you are saying then I think I got it now. Please get a copy of The Radio Amateurs Handbook or other technical text that describes the operation Frequency Modulation. Explaining FM and the relationship of maximum modulating (audio) frequency, deviation, and occupied (RF) bandwidth. In simple terms they are related by Carson's Rule which says that RF bandwidth is equal to twice the sum of the highest audio (modulating) frequency plus the deviation. In the K3 the RF bandwidth is fixed at 13 KHz (FM filter). -Original Message- From: Thomas Tumino [mailto:thomastum...@yahoo.com] Sent: Friday, January 30, 2009 11:23 PM To: elecraft@mailman.qth.net; li...@subich.com Subject: RE: [Elecraft] Impossible mission? USB with the 13khz filter for PSK31on Digipan I can only speak for Yaesu and Icom gear, but Yaesu rigs specify 5Khz transmit FM in their manuals and in the Icom 706MKIIG service manual states FM deviation is adjusted for 4.5Khz. There is a BIG difference between FM deviation and maximum modulating frequency (audio response). I was speaking specifically to maximum modulating frequency. As Lyle has said elsewhere, the maximum modulating frequency in the K3 is limited to about 2.8 KHz - in all modes except ESSB - which results in an occupied bandwidth of about 15.5 KHz with 5 KHz of deviation for FM. OK so are you saying that the K3 right now receives a maximum of FM 4Khz of AUDIO which translates into a received RF bandwidth of better then 5Khz, so there is no problem? If that is what you are saying then I think I got it now. 73, Tom -Original Message- From: Thomas Tumino [mailto:thomastum...@yahoo.com] Sent: Friday, January 30, 2009 1:33 PM To: li...@subich.com Subject: RE: [Elecraft] Impossible mission? USB with the 13khz filter for PSK31on Digipan No, typical transmitted bandwidth for communications use - including FM is about 100 Hz to 3000 Hz. I can only speak for Yaesu and Icom gear, but Yaesu rigs specify 5Khz transmit FM in their manuals and in the Icom 706MKIIG service manual states FM deviation is adjusted for 4.5Khz. I would assume this was the standard for all Yaesu and Icom gear at least. Some Yaesu rigs do have a special FM-N transmit mode of 2.5 Khz, similar to FRS radios, but I think that mode is the exception and not the rule. I think the DSP receive limit of 4Khz should at least be mentioned in the K3 materials (or perhaps it is and I missed it?). This bothers me as really I feel FM and AM are most regularly used to enjoy audio of a better quality then SSB audio, and a 4Khz limit cuts down on that a bit. 73 to all and thanks for your help, Tom-N2YTF ___ 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] FM and AM Bandwidth
It wasn't that long ago that the XYL could be in the room with me, not understanding a word of SSB coming from the HF rig. I was so proud, not only could I copy CW, I could copy and understand sideband. Now, just anyone off the street can understand phone - what good is that? ;-) [Elecraft] FM and AM Bandwidth Barry N1EU barry.n1eu at gmail.com Fri Jan 30 21:09:32 EST 2009 Previous message: [Elecraft] FM and AM Bandwidth Next message: [Elecraft] [K3] FM and AM Bandwidth I'm seeing 4.1Khz max audio frequency on AM with my 6Khz roofing filter. Perhaps Lyle is working a little magic? 73, Barry N1EU On Sat, Jan 31, 2009 at 2:00 AM, Joe Subich, W4TV lists at subich.com wrote: I'd love an excuse to spring for a 13Khz roofing filter ;-) The 13 KHz roofing filter with 4.2 KHz maximum audio frequency sounds quite good now but I'm looking forward to a bit more high end when Lyle gets it done. 6 KHz would be a very good match to the 13 KHz filter but I'd be happy with 5.5 KHz. 73, ... Joe, W4TV ___ 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- pace of development
Bravo Wayne, Well said on the software development of the K3. It amazes me when folks on here start listing items they want to see implemented and then define just how difficult or easy they are to do. It's as if they think their assigned degree of difficulty will expedite the implementation. Patience folks. I'm betting that very few, if any, of the those posting on here could do the technical job that the Elecraft team is doing. Dave N8AG ___ 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 Sub Rx idea
I believe what Mike is asking for is to have BSET mode be more comprehensive -- to include things like direct frequency entry and all of the other controls that are normally accessible only for the main receiver. The BSET switch *is* intended as a context swap that allows the front panel to control the sub receiver. It already allows control of many sub receiver parameters, including the DSP controls, mode, preamp, attenuator, and antenna selection. As part of the sub receiver band-independence feature (which I'm working on right now), I'll be adding additional controls to BSET. I've already added BAND change and noise blanker control. I hope to have a beta version of this code available within a week or two. It mostly works, but I have some refinement to do before I let it out of the lab. 73, Wayne N6KR I have been using the K3 sub rx for a while now. What I would like to see is a totally interchangeable main and sub. I want to be able to switch sub for main in a way that the sub rx is acting like the main without a shadow of a difference. Right now if I press Sub I can change sub rx settings but I can't change frequency for example. I would like to be able to operate as if the Sub were main and the Main were Sub and vice versus perhaps by pressing a single button. --- 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] K3 KRX3 B SET and FREQ ENT
I'd like to be able to set the VFO B RX frequency with BSET FREQ ENTER. Leigh/WA5ZNU On Jan 30, 2009, at 12:37 PM, Ian White GM3SEK wrote: When Independence Day arrives, will there be facilities to scan one receiver independently of the other, on a different band? Scanning and text decode/display will still be usable only with the main receiver, initially. 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 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 LINE Out mixes KRX3 and main output?
I took a quick look at it and I think I need to capture 2x the data and discard half of it in order to get just one channel out of the sound device. So I think fixing it in hardware makes more sense... Leigh/WA5ZNU I think the right place to fix it would be in whatever software is using the captured audio - the driver is OK, but the software needs to let you select channels you want. In lieu of that, an adapter cable makes sense... ~Iain Leigh L. Klotz, Jr WA5ZNU wrote: Sorry for the confusion on the sound card side: It's a stereo input, but I don't get software control of the balance or independent gain. It's not on Windows. The Griffin iMic device specs say stereo, but the driver appears to be supporting only mono gain controls. If I go to LIN OUT menu and tapping button 1 to get =PHONES then I can use the audio gain controls to control the mix, but if I use NOR mode LIN OUT then it's always mixed. Probably easiest for me to make a cable than (a) fix the driver or (b) ask for firmware changes. Leigh/WA5ZNU Leigh L. Klotz, Jr WA5ZNU wrote: Is it possible to control whether the sub rx goes to the line out or not? It seems that both main and sub rx are always going to line out; I guess they're on left/right channels? If not, I guess I need to make a cable to cut out one channel so I don't see both with my mono sound card line input. ___ 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 LINE Out mixes KRX3 and main output?
Yes, so my request would be to be able to mute one of them. Using a cable to connect only left is the best solution if the rig can't mute one. It doubles the data transfer to capture both sound channels and discard one. I agree though it's not that high priority. Leigh/WA5ZNU When the SUB is turned on the Line Out audio is Main=left and Sub=Right. - 73, Greg - AB7R Whidbey Island WA NA-065 On Fri Jan 30 11:12 , Iain MacDonnell - N6ML sent: Leigh L. Klotz, Jr WA5ZNU wrote: Is it possible to control whether the sub rx goes to the line out or not? It seems that both main and sub rx are always going to line out; I guess they're on left/right channels? If not, I guess I need to make a cable to cut out one channel so I don't see both with my mono sound card line input. That doesn't quite make sense. If your line-in is really mono, the right channel would not be connected to anything. Are you sure it's not the software you're using that's mixing the two channels together ? Also check your audio recording volume control settings (assuming this is on Windoze) - maybe you're recording the Mono Mix instead of Line In ? ~Iain ___ 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] K3 KRX3 B SET and FREQ ENT
Already on the list. tnx Wayne N6KR Leigh L. Klotz, Jr WA5ZNU wrote: I'd like to be able to set the VFO B RX frequency with BSET FREQ ENTER. Leigh/WA5ZNU --- 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
