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I just ordered a K3/10 and a 1kHz 8 pole filter. I do both SSB and CW, more
CW than SSB, and would like to experiment with digital modes, etc. Did I make a good choice, or what? Mike AI4NS _______________________________________________ Elecraft mailing list Post to: [hidden email] 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 |
K3 - selecting filters. Help pls.
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I need also advice with the filters.
I don't CW. Only SSB/Contest and digital (RTTY and PSK) What could be a good filter choice? Thank's a lot Mike Short escribió: > I just ordered a K3/10 and a 1kHz 8 pole filter. I do both SSB and CW, more > CW than SSB, and would like to experiment with digital modes, etc. > Did I make a good choice, or what? > > Mike > AI4NS > _______________________________________________ > Elecraft mailing list > Post to: [hidden email] > 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 -- Rubén Navarro Huedo - EA5BZ http://www.palotes.com _______________________________________________ Elecraft mailing list Post to: [hidden email] 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 |
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In reply to this post by Mike Short
Mike,
This may well go down in history as the daftest question of all time! Of *course* you made a good choice buying the K3 :-) Myself I have 6.0, 2.7, 1.8, 1.0 and 250Hz (I think). Simon Brown, HB9DRV -------------------------------------------------- From: "Mike Short" <[hidden email]> > I just ordered a K3/10 and a 1kHz 8 pole filter. I do both SSB and CW, > more > CW than SSB, and would like to experiment with digital modes, etc. > Did I make a good choice, or what? _______________________________________________ Elecraft mailing list Post to: [hidden email] 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: K3 - selecting filters. Help pls.
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In reply to this post by Ruben Navarro Huedo
Ruben, >From my experience.....and I use a lot of CW and I am also into RTTY and PSK with some SSB contesting thrown in...... I would get the 500 Hz CW filter for RTTY, and use the stock filter SSB filter for everything else The stock filter will do PSK very well and of course SSB. But, when it comes to the RTTY mode, I would get the 500 Hz filter. You could use the stock filter and narrow the bandwidth down, but from my experience RTTY is a joy with the 500 Hz Filter Now, I got the 5 pole filters...which are cheaper...and have found them to be quite adequate so far. That is my opinion....others may disagree. Lee - K0WA K2/100 SN-1056 K3 - SN 443 In our day and age it seems that Common Sense is in short supply. If you don't have any Common Sense - get some Common Sense and use it. If you can't find any Common Sense, ask for help from somebody who has some Common Sense. Is Common Sense divine? _______________________________________________ Elecraft mailing list Post to: [hidden email] 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: K3 - selecting filters. Help pls.
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I found Eric's discussion at http://www.elecraft.com/K3/Roofing_Filters.htm
most helpful when I faced these questions. Ruben, >From my experience.....and I use a lot of CW and I am also into RTTY and PSK with some SSB contesting thrown in...... I would get the 500 Hz CW filter for RTTY, and use the stock filter SSB filter for everything else The stock filter will do PSK very well and of course SSB. But, when it comes to the RTTY mode, I would get the 500 Hz filter. You could use the stock filter and narrow the bandwidth down, but from my experience RTTY is a joy with the 500 Hz Filter Now, I got the 5 pole filters...which are cheaper...and have found them to be quite adequate so far. That is my opinion....others may disagree. Lee - K0WA K2/100 SN-1056 K3 - SN 443 In our day and age it seems that Common Sense is in short supply. If you don't have any Common Sense - get some Common Sense and use it. If you can't find any Common Sense, ask for help from somebody who has some Common Sense. Is Common Sense divine? _______________________________________________ Elecraft mailing list Post to: [hidden email] 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: [hidden email] 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 |
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In reply to this post by Simon (HB9DRV)
Simon, since you wrote the digital program that I am
using and so far think is great, you are the very one to answer the question that I think Mike is asking. For Ham Radio Deluxe, Digital Master 780, which filter do you use the most? If you use others, when and why? I find clicking on the waterfall with my 2.7 khz filter in my TS-850, but my experience level is very low with PSK and even lower with RTTY. By the way, I selected HRD because you wrote it to be compatible with Vista. I needed on RTTY quick to work VP6DX and was successful for 17 and 20, but missed 30 meters. Digital Master 780 is great. Thanks for a great program. Cookie, K5EWJ --- "Simon Brown (HB9DRV)" <[hidden email]> wrote: > Mike, > > This may well go down in history as the daftest > question of all time! Of > *course* you made a good choice buying the K3 :-) > > Myself I have 6.0, 2.7, 1.8, 1.0 and 250Hz (I > think). > > Simon Brown, HB9DRV > > -------------------------------------------------- > From: "Mike Short" <[hidden email]> > > > I just ordered a K3/10 and a 1kHz 8 pole filter. I > do both SSB and CW, > > more > > CW than SSB, and would like to experiment with > digital modes, etc. > > Did I make a good choice, or what? > > > _______________________________________________ > Elecraft mailing list > Post to: [hidden email] > 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 > Willis 'Cookie' Cooke K5EWJ _______________________________________________ Elecraft mailing list Post to: [hidden email] 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 |
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Hi,
As has often been said the DSP is very good on its own, but I can clearly hear the 1kHz and 250Hz filters as they kick in (I think it's 250Hz). My filters and logic for choice is: 1.8kHz - SSTV, SSB 1 kHz - wide digital modes and CW browsing, 250Hz - PSK, RTTY, CW. At the moment I am writing and testing SSTV software - this has been 100% of my spare time for the last three months, so the 1.8kHz filter has been engaged most of the time. When listening to CW I use 1 kHz / 250Hz. As I do not suffer from strong signals here I rarely use narrow filters in digital modes, but the 250Hz really digs signals out of the noise, I really hear it as I turn the bandwidth down from 300Hz to 250Hz. Simon Brown, HB9DRV -------------------------------------------------- From: "WILLIS COOKE" <[hidden email]> > Simon, since you wrote the digital program that I am > using and so far think is great, you are the very one > to answer the question that I think Mike is asking. > For Ham Radio Deluxe, Digital Master 780, which filter > do you use the most? If you use others, when and why? _______________________________________________ Elecraft mailing list Post to: [hidden email] 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 |
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In reply to this post by Mike Short
Hi Mike:
>I just ordered a K3/10 and a 1kHz 8 pole filter. I do both SSB and CW, more >CW than SSB, and would like to experiment with digital modes, etc. >Did I make a good choice, or what? Probably not a bad choice... if you operate in conditions where you'll be in QRM however, you might want to include the 400Hz filter as well. I operate both rag chew (1kHz B/W) and DX/contesting, where the more narrow xtal filter really comes in handy. I seldom crank my B/W down much less than 350Hz, but the 400 Hz CW filter is a BIG help. I don't have the 1kHz xtal filter, but it's gonna be one of my next purchases, I think. 83, Tom Hammond N0SS _______________________________________________ Elecraft mailing list Post to: [hidden email] 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 |
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In reply to this post by Mike Short
Hi Mike:
Of course, the 500Hz 5-pole xtal filter is not a bad choice ether. 73, Tom >I just ordered a K3/10 and a 1kHz 8 pole filter. I do both SSB and CW, more >CW than SSB, and would like to experiment with digital modes, etc. >Did I make a good choice, or what? Probably not a bad choice... if you operate in conditions where you'll be in QRM however, you might want to include the 400Hz filter as well. I operate both rag chew (1kHz B/W) and DX/contesting, where the more narrow xtal filter really comes in handy. I seldom crank my B/W down much less than 350Hz, but the 400 Hz CW filter is a BIG help. I don't have the 1kHz xtal filter, but it's gonna be one of my next purchases, I think. 83, Tom Hammond N0SS _______________________________________________ Elecraft mailing list Post to: [hidden email] 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 |
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In reply to this post by Simon (HB9DRV)
This from the K3 manual:
"The sub receiver also has the same filter options as the main receiver. Up to five crystal filters can be installed in the sub receiver, as well as a generalcoverage L-C band-pass filter module (KBPF3, pg. 42). The sub also includes an I.F. noise blanker. There are three main modules associated with the KRX3 option: the sub receiver itself; a KSYN3 synthesizer; and a second I.F. DSP. All three must be installed and enabled before the sub receiver can be used. For information on installing and configuring the sub receiver, refer to the KRX3 option installation manual." If I am interpreting this correctly, in addition to the KRX3, I have to have a second KSYN3 board and a second I.F. DSP. I don't see these as purchase-able options on the order page. Also, it appears that I would have to have an additional KBPF3 if I want the sub receiver to be general coverage...that is, in addition to having the main receiver as general coverage to begin with. I don't see having both receivers with general coverage capability. That seems a bit too redundant, and expensive. I will more than likely just have the sub as the general coverage receiver. Does the cost of the KRX3 include the second KSYN3 & second IF DSP? Stan W5EWA Houston, TX _______________________________________________ Elecraft mailing list Post to: [hidden email] 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 |
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In reply to this post by Mike Short
> I just ordered a K3/10 and a 1kHz 8 pole filter. I do both
> SSB and CW, more CW than SSB, and would like to experiment > with digital modes, etc. > Did I make a good choice, or what? You don't need any optional filters beyond the 2.7kHz supplied. The DSP provides filtering in 50-100Hz steps for all modes. You can select the optimum bandwidth filter easily. However, if you operate a lot in conditions where there is heavy QRM (strong nearby signals), then having a crystal roofing filter right at the operating bandwidth to pre-filter and protect the DSP is often an advantage. This is something you can decide later after using the K3 and determining what operating bandwidths you like and use a lot. Accordingly, almost all my operating is in heavy QRM, so I really appreciate the 200 or 250Hz for RTTY, 400 or 500Hz for CW and 1.8kHz for SSB. 73, Ed - W0YK _______________________________________________ Elecraft mailing list Post to: [hidden email] 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 |
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In reply to this post by srife
> Does the cost of the KRX3 include the second KSYN3 & second IF DSP?
Yes, it does. The KRX3 is complete, including a standard 2.7kHz crystal filter. You can add four more optional roofing filters if desired. 73, Ed - W0YK _______________________________________________ Elecraft mailing list Post to: [hidden email] 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 |
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In reply to this post by Mike Short
<quote author="Mike Short">
I just ordered a K3/10 and a 1kHz 8 pole filter. I do both SSB and CW, more CW than SSB, and would like to experiment with digital modes, etc. Did I make a good choice, or what? Mike AI4NS Hi Mike, I most often use the 5 pole 500Hz for cw. I also have the 8 pole 250Hz filter. The 250Hz is rarely used except during contests - CW and RTTY. When things are really tight, the 250Hz with the twin peaks filter does a remarkable job on RTTY differentiating between two closely spaced signals. If I were to have only one filter for both modes I would opt for the 500Hz 5 pole. It has very nice gentle skirts and is good enough, along with the DSP, for most situations. The 250Hz 8 pole is a brute - it has very sharp skirts. There are times, though, when you really need the extra help. Having said all that, I don't think you are going to be unhappy with the 1KHz filter. In the event you are not happy, I suspect you will have no problem either trading or selling it. In the near future K3 filter trading/selling will probably become very common around here. Tom, AK2B |
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