Re: [Elecraft] KAF2, KDSP2 or BMF2
Glad you posted this, it's a FB handy household hint to save hearing! 73 de Alex NS6Y On Apr 6, 2006, at 11:01 PM, Ron D'Eau Claire wrote: Look at these commercial operators at work for examples of what Jim is talking about: http://www.radiomarine.org/historic-5.html Ron AC7AC -Original Message- Michael, A lot of us "older hams" developed the habit of wearing our "cans" (as the headphones were known) a bit in front of our ears when working CW. ___ 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] KAF2, KDSP2 or BMF2
Look at these commercial operators at work for examples of what Jim is talking about: http://www.radiomarine.org/historic-5.html Ron AC7AC -Original Message- Michael, A lot of us "older hams" developed the habit of wearing our "cans" (as the headphones were known) a bit in front of our ears when working CW. I still do it. It protects my ears from sudden loud sounds. It also cuts down on the ringing in my ears. There is almost nothing as hard on hearing as pumping loud sounds directly down the ear canal. A lot of young folk will discover this the hard way when their hearing starts to disappear one of these days. 72, Jim W4BQP since '53 K2 #2268 michael taylor wrote: > >I am still left wondering though about the "ringing" in my ears after >listening in on older hams operate a station during Field Day. Several >hams I know have complained of hearing lost and only one can pin it on >his day job in a machine shop, rather than too much time listening to a >loud radio to attempt to understand a signal underneath the QRN and >QRM. ___ 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] KDSP2 v KAF2
[EMAIL PROTECTED] wrote: Using the KDSP2 set with a Beta of 95 and a Decay of 30 has helped me to to copy fast contest CW using MixW 2.16 well enough to participate. Interesting. I didn't change the beta from the default of 89, but I found that reducing the decay to 30 was just about optimal for copying weak CW signals by ear. So I guess MixW and I think alike! -- 73, Vic, K2VCO Fresno CA http://www.qsl.net/k2vco ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] KAF2, KDSP2 or BMF2
Michael, A lot of us "older hams" developed the habit of wearing our "cans" (as the headphones were known) a bit in front of our ears when working CW. I still do it. It protects my ears from sudden loud sounds. It also cuts down on the ringing in my ears. There is almost nothing as hard on hearing as pumping loud sounds directly down the ear canal. A lot of young folk will discover this the hard way when their hearing starts to disappear one of these days. 72, Jim W4BQP since '53 K2 #2268 michael taylor wrote: I am still left wondering though about the "ringing" in my ears after listening in on older hams operate a station during Field Day. Several hams I know have complained of hearing lost and only one can pin it on his day job in a machine shop, rather than too much time listening to a loud radio to attempt to understand a signal underneath the QRN and QRM. ___ 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] KDSP2 v KAF2
My K2 is equipped with the KDSP2. I enjoy casual contesting, but have only modest CW copying skills. In order to participate in contests between digital events, I have tried making search and pounce contacts in CW contests using MixW decoding as an aid. Using the KDSP2 set with a Beta of 95 and a Decay of 30 has helped me to to copy fast contest CW using MixW 2.16 well enough to participate. I have found that MixW can copy fast contest keyboard keyed code reasonably well with the denoiser on. With the DSP off, the background hiss severely degrades the S/N ratio and copy for strong to moderate strength signals making CW MixW contest participation impractical using my K2 and small low antennas. CW MixW copy is poor when signals are weak, even if the CW tone is clear enough for easy manual copy. Narrowing crystal or DSP audio filters has not increased the S/N ratio enough to improve MixW copy of weak signals for me, but will eliminate annoying nearby signals. Turning off the K2 AGC and controlling audio volume using RF gain has allowed me to copy some of the stronger weak signals. I always use the KDSP2 for CW. MixW with KDSP2 denoiser on has also enabled me to make CW DX QSOs. My K2 has the original narrow 2.2K OPT1 Filter. I do not use the DSP denoiser with SSB phone reception unless the background noise is annoying. I have found that the KDSP2 denoiser in my rig reduces background hiss and QRM when listening to SSB phone, but can also introduce an unpleasant watery element to the voice sound quality. For me, the best SSB phone copy with DSP noise reduction on has been obtained using a Beta of 95 and a decay of 07 where hiss and QRM is significantly reduced with only a minor distortion of voice sound quality. I have never used a KAF2 and can make no comparison. HTH de KB1IKD ___ 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] Power output on my KX1
Here are the results of my KX1 with the 80/30 module installed: With 13.5 Power Supply: 80 Meters. 3.5 watts 40 Meters. 2.8 watts 30 Meters..3.5 watts 20 Meters..2.3 watts With Internal Batteries <8.2 Volts> Lithium 80 Meters..1.8 watts 40 Meters..1.3 watts 30 Meters..1.6 watts 20 Meters..1.3 watts Actually I am not backpacking any more because of my knees but I do go to parks close by. My favorite is a National Park Fort McHenry...in Baltimore, MD I am using a 24 foot antenna with a 33 ft. counterpoise. I doubt that I am going to use the internal batteries very much because I have a 7amphr sealed battery that I plan to set on the picnic table!! The main reason I like Fort McHenry is the KX1 and the K1 are free from any noise on the receivers. It is such a relief from the S-8 noise that I have at home. Paul, KD3JF EX: WA4JGI, WA8TER Central Maryland FM19qd (Map Grid Square) ___ 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] KAF2, KDSP2 or BMF2
On 4/6/06, Lee Buller <[EMAIL PROTECTED]> wrote: > low cost. the BMF2 is Bio-Mass Filter for the K2. You can have BMF1 for the > K1. > It is called your brain. Best filter in the world. Fastest and most complex > computer > yet devised. I agree with your statements, the brain is an incredible device, and amazing flexible in adapting to various situations. I am still left wondering though about the "ringing" in my ears after listening in on older hams operate a station during Field Day. Several hams I know have complained of hearing lost and only one can pin it on his day job in a machine shop, rather than too much time listening to a loud radio to attempt to understand a signal underneath the QRN and QRM. Perhaps a not so obvious feature, if it is true, is through the use of either KAF2 or KDSP2 hams listen at a "safer" volume with less risk of further hearing lost, by helping our brain by filtering out at least some of the noise before the brain tries to decode the signal, allowing comfortable listening at a lower volume because your brain is not "working" as hard to separate out the signal from as much noise. I don't know, I am just wondering if anyone agrees or disagrees with that aspect of using additional "hearing aids". ___ 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] KX3080 working now!
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 And there was much rejoicing (yaaa) Dunno what exactly the problem was. I pulled L1 and L2 off the LPF board, retinned the leads, and now it seems to be working. Getting 1.0W out on 80, 2.0 on 40, 2.5 on 30 and 3.0 on 20. I need to retweak the green L2 (or is it L1? - too lazy too look at the manual while I type this) but I pronounce this rig cured. Thanks to all for the hints (as usual - you guys really offer some great advice!) and the power out measurements. I certainly appreciate it! 73 fer now... Randy Rathbun NV0U [EMAIL PROTECTED] K2#1981, kx1 #1318, ARS #895, QRPARCI #10776, FP#1292, KCQRP #1 -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.1 (Darwin) iD8DBQFENcbb6zTmfegBFIERArfrAKCR5nQKAixy5SGJqIlDxpC24YKnDwCeNH/c qCtwisDhcy5pO+G/80sKuJw= =k+Oi -END PGP SIGNATURE- ___ 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] WA3WSJ Red Hot Vertical - Backpacker's Special!
Sir, you are my hero, since you are not just talking about designing antennas, you are designing 'em. Let me know your web site or something when this is ready for prime time, I may well buy one! 73 de Alex NS6Y On Apr 6, 2006, at 6:27 PM, Edward R. Breneiser wrote: Hello all! I'm very excited about this vertical as hiking season is here. I'm still in the prove-in stage, but it looks very promising. I have a vertical antenna system that should weigh-in around 7oz excluding the coax on 40m, 30m and 20m with SWRs around 1.5 or so. Today I just added some 15m components and it looks good on 15m too. It looks like I'll use a separate radiator for 15m and 10m. So I now have a small lightweight vertical for the trail that plays on 40m,30m,20m,15m and 10m. All the pieces fit in a small baggie and weigh-in around 9oz for 5-band operation! This vertical is designed to hang from a tree etc. More to come soon as I now look to further refine the system. Oh yes - no tuner needed! One last item before I head up to watch TV, don't forget to look for N7UN, NU3E and WA3WSJ operating from the AT in NJ next Saturday and Sunday morning. We plan to hike inside the Delaware Water Gap and play radio. I'll be testing my Red Hot Vertical during the hike. 72, Ed, WA3WSJ ___ 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] WA3WSJ Red Hot Vertical - Backpacker's Special!
Hello all! I'm very excited about this vertical as hiking season is here. I'm still in the prove-in stage, but it looks very promising. I have a vertical antenna system that should weigh-in around 7oz excluding the coax on 40m, 30m and 20m with SWRs around 1.5 or so. Today I just added some 15m components and it looks good on 15m too. It looks like I'll use a separate radiator for 15m and 10m. So I now have a small lightweight vertical for the trail that plays on 40m,30m,20m,15m and 10m. All the pieces fit in a small baggie and weigh-in around 9oz for 5-band operation! This vertical is designed to hang from a tree etc. More to come soon as I now look to further refine the system. Oh yes - no tuner needed! One last item before I head up to watch TV, don't forget to look for N7UN, NU3E and WA3WSJ operating from the AT in NJ next Saturday and Sunday morning. We plan to hike inside the Delaware Water Gap and play radio. I'll be testing my Red Hot Vertical during the hike. 72, Ed, WA3WSJ ___ 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] Kenwood MC-43S hand held mic for sale
Thanks for all the responses. The mic has now sold. 73, Charlie..>> ___ 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] KAF2, KDSP2 or BMF2
I've been following the neat discussion on filtering with the K2 and find it quite interesting. I have obtain a new type of filter that did not cost me anything. Now the KAF2 worked well for me, but I felt the BMF2 worked better. I have not tried toeh KDSP2 yet (it is rather pricey) so I have stuck with the BMF2 filter along with the K2's crystal filters. The BMF2 works well, travels very well, and can be put in or out of the circuit without too much trouble. BMF2 has a very low power consumption and doesn't not take any power from the K2. Perfect for portable operation too, although I use mine in the shack all the time. It is low cost. the BMF2 is Bio-Mass Filter for the K2. You can have BMF1 for the K1. It is called your brain. Best filter in the world. Fastest and most complex computer yet devised. Grin Lee - K0WA In our day and age it seems that Common Sense is in short supply. If you don't have any Common Sense - get some and use it. If you can't find any common sense, ask for help from somebody who has some common sense. ___ 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] K7TQ - Please contact me via e-mail
Randy (K7TQ) - Please drop me an e-mail... can't find your e-mail address in QRZ.COM. 73, Tom N0SS ___ 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] KAF2 or KDSP2 for K2 #5287
Idiom Press make a SCAF-based audio filter called the SCAF-1. It's a low-pass filter with a variable upper cutoff frequency. It also operates in real-time with no ringing. Recordings of the SCAF-1 in action are available on the web site: http://www.idiompress.com/scaf-1.html The standard disclaimer does NOT apply... 73, - Rob K2 #5004 On Thu, 06 Apr 2006 11:24:55 -0700, Rick Dettinger <[EMAIL PROTECTED]> wrote: Keith - I do CW only and use the KAF2 and think that it is an improvement. But not to decrease bandwith, the IF filters handle that chore very well. A bandpass or lowpass AF filter cleans up internal noise that I find tiring. Another solution maybe headphones that cut off high frequencies. I currently use Sony headphones that have good high audio frequency response so the audio filter is very helpfull. I like the comfort of the Sonys but would like CW phones that cut off frequencies above 600 hz. or so. I also have a passive outboard bandpass filter constructed from 88mh inductors. The signal is very clean but the response is actually too sharp for most use. I would rather it were designed as a low pass filter. This would clean up all electronic noise.73 - Rick - K7MW ___ 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] KAF2 or KDSP2 for K2 #5287
G'day folks, Let's widen the question to make it KAF2 or KDSP2 or NOTHING? Does the basic K2's crystal filtering work well enough that you (any of you) would be happy with no AF filtering or does the AF/DSP filtering add enough that you wouldn't want to be without it? Unless there has been a circuit change in the stock K2 AF chain, the KAF2 has the advantage of introducing a fixed low-pass filter which really cleans up the hf hiss in the audio. It made listening to SSB a much nicer experience. Given the choice of just a KAF2 or nothing I would take the KAF2 every time if only for this. I believe someone mentioned that the KDSP2 tracks the crystal filter, it doesn't, and it always defaults to the first (af) filter settings on power up. I could live without the KDSP2 but in its absence not the KAF2 for reasons mentioned above, I have both. On another subject, what has happened to the Logger32 site, the domain has been out of action for weeks. Regards, Mike VP8NO ___ 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] KAF2 or KDSP2 for K2 #5287
I would strain to hear a P5! Roland n5vwn - Original Message - From: "EricJ" <[EMAIL PROTECTED]> To: "'Dave Lowenstein'" <[EMAIL PROTECTED]>; "'Elecraft Group'" Sent: Thursday, April 06, 2006 10:24 AM Subject: RE: [Elecraft] KAF2 or KDSP2 for K2 #5287 Same here, Dave. I operate for fun. When signals are so bad I have to crank in $300 filters, it's time to find someone stronger or QRT. I can't imagine a QSO so important that I have to strain to hear it. I had a KAF2 and had a chance to sell it to save for a KDSP2. I found I could still do what I do with the built-in crystal filters. Others have other requirements, of course. Eric KE6US -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Dave Lowenstein Sent: Thursday, April 06, 2006 9:49 AM To: Elecraft Group Subject: Re: [Elecraft] KAF2 or KDSP2 for K2 #5287 I find the crystal filter more than adequate for my type of CW operation and have felt no need to add any audio filtering. 73, Dave N7AF - Original Message - From: "Darwin, Keith" <[EMAIL PROTECTED]> To: "Elecraft Group" Sent: Thursday, April 06, 2006 9:14 AM Subject: RE: [Elecraft] KAF2 or KDSP2 for K2 #5287 Great reply Vic, Let's widen the question to make it KAF2 or KDSP2 or NOTHING? Does the basic K2's crystal filtering work well enough that you (any of you) would be happy with no AF filtering or does the AF/DSP filtering add enough that you wouldn't want to be without it? - Keith KD1E - ___ 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] KAF2 or KDSP2 for K2
FWIW, I operate CW only and have the KAF2 and the KDSP2 installed in my K2. For the most part I find that I only need the XFIL set to FL2 at 500Hz. However there are times when the bands are crowded or noisy and I am trying to work a weak signal. Then I find that the KDSP2 with the Denoiser and CW Filter Gain adjusted for 12db gain to be very helpful in picking up the weak stations. I really like being able to tweak and adjust the KDSP2 filters with its very large selection of settings and adjustments. 73, KI4DGH Chuck Gehring ___ 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] KAF2 or KDSP2 for K2 #5287
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 I spent a few years with just the stock K2 when it came to audio filtering. Thought it was great just like it was. Last year I put the DSP filter in. Now I am sold on it. I love the noise removal function on the thing. I find that if the noise blanker can't get rid of it, then the DSP usually can. Yes, it sometimes messes with your mind as the audio can sound like it is underwater, but it does not do that too often. I have found that if it sounds like that then I have something set up wrong - the filter is too narrow or something like that. A few seconds of button pressing usually solves that pretty quick. If I had it to do again, I would still go the DSP route over the base K2. On Apr 6, 2006, at 1:15 PM, Geoffrey Mackenzie-Kennedy wrote: Keith KD1E wrote on Thursday, April 06, 2006 5:14 PM Great reply Vic, Let's widen the question to make it KAF2 or KDSP2 or NOTHING? Does the basic K2's crystal filtering work well enough that you (any of you) would be happy with no AF filtering or does the AF/DSP filtering add enough that you wouldn't want to be without it? Randy Rathbun NV0U [EMAIL PROTECTED] K2 #1981 KX1#1318 QRPARCI #10776, ARS #895, FPQRP #1292, KCQRP #1 -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.1 (Darwin) iD8DBQFENWGE6zTmfegBFIERAkS2AJ9/vBfK/nBman6eEbWdB+eJOVkH5QCdG3jt jypHZRB582GqJnUh/wpObVk= =A/oT -END PGP SIGNATURE- ___ 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] KAF2 or KDSP2 for K2 #5287
Keith - I do CW only and use the KAF2 and think that it is an improvement. But not to decrease bandwith, the IF filters handle that chore very well. A bandpass or lowpass AF filter cleans up internal noise that I find tiring. Another solution maybe headphones that cut off high frequencies. I currently use Sony headphones that have good high audio frequency response so the audio filter is very helpfull. I like the comfort of the Sonys but would like CW phones that cut off frequencies above 600 hz. or so. I also have a passive outboard bandpass filter constructed from 88mh inductors. The signal is very clean but the response is actually too sharp for most use. I would rather it were designed as a low pass filter. This would clean up all electronic noise.73 - Rick - K7MW - Original Message - From: "Darwin, Keith" <[EMAIL PROTECTED]> To: "Elecraft Group" Sent: Thursday, April 06, 2006 9:14 AM Subject: RE: [Elecraft] KAF2 or KDSP2 for K2 #5287 Great reply Vic, Let's widen the question to make it KAF2 or KDSP2 or NOTHING? Does the basic K2's crystal filtering work well enough that you (any of you) would be happy with no AF filtering or does the AF/DSP filtering add enough that you wouldn't want to be without it? - Keith KD1E - -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Vic K2VCO Recently, I took out the DSP and put back the KAF2. After getting used to missing the noise reduction, I found that I prefer the KAF2. ___ 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] KAF2 or KDSP2 for K2 #5287
Keith KD1E wrote on Thursday, April 06, 2006 5:14 PM Great reply Vic, Let's widen the question to make it KAF2 or KDSP2 or NOTHING? Does the basic K2's crystal filtering work well enough that you (any of you) would be happy with no AF filtering or does the AF/DSP filtering add enough that you wouldn't want to be without it? Very very seldom use the KAF2, and don't have a KDSP2. 73, Geoff GM4ESD ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] KDSP2 or KAF2 - resume.
Hi OM's & YL's! My favorite mode is CW. And I'm live in big industrial town (QRM). Now I think that the rigt way for me - it's KAF2. Hope with this option I will better selected a weak signals from QRM/QRN. But internal K2 XTAL-filter is great! Thanks for everyone for interesting discussion. -- 72 & 73! de UR5LAM Alexander Ponomarenko RU-QRP-CLUB #103 mailto: [EMAIL PROTECTED] ___ 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] KAF2 or KDSP2 for K2 #5287
One nice feature of the DSP for CW operation is the ability to open up the filters for bands that seem to be dead or have little activity. You set the crystal filter to its widest bandwidth and put the DSP in LP (its widest setting). Activate the denoiser. The band is quiet, background noise heavily suppressed. If a signal pops up anywhere in the passband -- even a weak one -- the DSP nearly instantly builds a narrow filter around it. Somewhat like squelch on an FM radio, you hear the signal when it is there, and it is really quiet when no signals are present. It really helps reduce listening fatigue for monitoring. Now, with the current sunspot situation, I am sure this never happens, but if it did... :-) 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] KAF2 or KDSP2 for K2 #5287
Keith, It depends on whether you want to get rid of those nasty carriers or bust them. Some people use these radios on SSB. 73, Kurt ___ 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] KAF2 or KDSP2 for K2 #5287
Keith, KD1E wrote: When I had narrow filtering in my Omni V I found that S/N did not increase as bandwidth decreased. Instead, the noise began to sound like signal since both were at the same frequency. Add some filter ringing to the mix and sometimes the narrowest settings made copy worse. As always, I reserve the right to change my mind as I get more operating time with various rigs :-) --- I, too, have had Keith's experience. Over the years I use narrow filters ONLY when absolutely needed to remove extremely loud QRM. Most often I listen to CW using my >2 kHz OPT1 filter. Perhaps it's a result of having learned to listen to CW as an SWL and Novice many years ago using regenerative receivers and simple superhets for which 6 to 8 kHz bandwidths were typical. And the CW bands were a lot more crowded then, typically, than today. That doesn't mean that I didn't have exotic filters. The most exotic filter yet developed is the one between our ears. It has to be trained, however. For speech, we do that instinctively from childhood by listening. Who hasn't picked out a single voice across the room at a crowded party and heard every word in spite of a dozen or more other voices also carrying on at the same time. It only gets really hard when some character starts shouting in our ear so we can't hear the other voice through the hubbub. We can learn to do the same with CW. Of course, the first step is to avoid having the signal we want to hear made quieter, which is why I avoid AGC for most listening. It responds to the aggregate of signals in the bandpass. I want it to leave my volume where I set it. With most receivers I like having a hard limiter that doesn't let any signal exceed a certain threshold regardless without affecting the other signals. I've never fashioned one for my K2 because I haven't found that the K2 seems to need it. Very, very rarely do I find the copy better at narrower bandwidths for just the reason Keith observes: the narrower bandwidths tend to concentrate all the energy in the bandpass of the filter. It's like trying to listen to someone in a crowded room when a whole group of people are talking at about the same volume, with the same basic pitch to their voices, with similar inflections and pace to their speech (the bane of the keyer!!). Another advantage of using wide bandwidths is being aware of what's going on around the frequency too. Unless the other station is really whizzing along requiring my full attention to avoid missing words, I can keep track of several QSO's around the frequency, again just like being a party. One doesn't have to catch every word to have a good sense of what's being said here and there while still paying quite close attention to the person I'm talking with. It's something that almost anyone can learn with practice. And you already own the filter! Ron AC7AC ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] KAF2 or KDSP2 for K2 #5287
Darwin, Keith wrote: When I had narrow filtering in my Omni V I found that S/N did not increase as bandwidth decreased. Instead, the noise began to sound like signal since both were at the same frequency. Add some filter ringing to the mix and sometimes the narrowest settings made copy worse. It depends on the type of noise. Impulse noise, the kind that noise blankers work best with, has its duration lengthened by a sharp filter, which makes it worse. Atmospheric noise, like that caused by thunderstorms is particularly bad because it contains sharp rise-time pulses but they are distributed in such a way that noise blankers generally don't work on it. But many types of noise are reduced (relative to the signal) by narrowing the bandwidth. The narrow filter is just another tool in the toolbox that sometimes is useful. Actually, I have the KAF2, an OHR SCAF, and a Timewave DSP 59+ all hooked up, and under noisy conditions it's interesting to see the effects of each of them. -- 73, Vic, K2VCO Fresno CA http://www.qsl.net/k2vco ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
RE: [Elecraft] KAF2 or KDSP2 for K2 #5287
Same here, Dave. I operate for fun. When signals are so bad I have to crank in $300 filters, it's time to find someone stronger or QRT. I can't imagine a QSO so important that I have to strain to hear it. I had a KAF2 and had a chance to sell it to save for a KDSP2. I found I could still do what I do with the built-in crystal filters. Others have other requirements, of course. Eric KE6US -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Dave Lowenstein Sent: Thursday, April 06, 2006 9:49 AM To: Elecraft Group Subject: Re: [Elecraft] KAF2 or KDSP2 for K2 #5287 I find the crystal filter more than adequate for my type of CW operation and have felt no need to add any audio filtering. 73, Dave N7AF - Original Message - From: "Darwin, Keith" <[EMAIL PROTECTED]> To: "Elecraft Group" Sent: Thursday, April 06, 2006 9:14 AM Subject: RE: [Elecraft] KAF2 or KDSP2 for K2 #5287 Great reply Vic, Let's widen the question to make it KAF2 or KDSP2 or NOTHING? Does the basic K2's crystal filtering work well enough that you (any of you) would be happy with no AF filtering or does the AF/DSP filtering add enough that you wouldn't want to be without it? - Keith KD1E - ___ 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] KAF2 or KDSP2 for K2 #5287
When I had narrow filtering in my Omni V I found that S/N did not increase as bandwidth decreased. Instead, the noise began to sound like signal since both were at the same frequency. Add some filter ringing to the mix and sometimes the narrowest settings made copy worse. As always, I reserve the right to change my mind as I get more operating time with various rigs :-) - Keith KD1E - -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Vic K2VCO Sent: Thursday, April 06, 2006 12:54 PM To: Elecraft Group Subject: Re: [Elecraft] KAF2 or KDSP2 for K2 #5287 Selectivity has two functions: to reject QRM and to increase the signal/noise ratio by narrowing the bandwidth. The crystal filter in the K2 is usually sufficient for QRM reduction, with the help of the "built-in wetware filter" in the human brain. However, it *is* advantageous to have the narrowest practical bandwidth when receiving a weak CW signal; the signal's energy is concentrated in a very narrow range of frequencies -- maybe 50 Hz is required for usual CW speeds -- while the noise is evenly distributed over the bandpass of the receiver. I find it useful to have a narrow audio filter available for this reason. ___ 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] KAF2 or KDSP2 for K2 #5287
Darwin, Keith wrote: Let's widen the question to make it KAF2 or KDSP2 or NOTHING? Does the basic K2's crystal filtering work well enough that you (any of you) would be happy with no AF filtering or does the AF/DSP filtering add enough that you wouldn't want to be without it? Selectivity has two functions: to reject QRM and to increase the signal/noise ratio by narrowing the bandwidth. The crystal filter in the K2 is usually sufficient for QRM reduction, with the help of the "built-in wetware filter" in the human brain. However, it *is* advantageous to have the narrowest practical bandwidth when receiving a weak CW signal; the signal's energy is concentrated in a very narrow range of frequencies -- maybe 50 Hz is required for usual CW speeds -- while the noise is evenly distributed over the bandpass of the receiver. I find it useful to have a narrow audio filter available for this reason. -- 73, Vic, K2VCO Fresno CA http://www.qsl.net/k2vco ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] KX1 on 17 meters?
[EMAIL PROTECTED] wrote: NowKX1 or K1 73's, Pete wd4lst Both works for me John WA8KNE ___ 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] KAF2 or KDSP2 for K2 #5287
I find the crystal filter more than adequate for my type of CW operation and have felt no need to add any audio filtering. 73, Dave N7AF - Original Message - From: "Darwin, Keith" <[EMAIL PROTECTED]> To: "Elecraft Group" Sent: Thursday, April 06, 2006 9:14 AM Subject: RE: [Elecraft] KAF2 or KDSP2 for K2 #5287 Great reply Vic, Let's widen the question to make it KAF2 or KDSP2 or NOTHING? Does the basic K2's crystal filtering work well enough that you (any of you) would be happy with no AF filtering or does the AF/DSP filtering add enough that you wouldn't want to be without it? - Keith KD1E - ___ 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] Re: My Power out with 3080 fitted and mod kit
Hi Paul, These levels are all fine. You could get more power out on internal batteries if you used Lithium AAs (1.5 V), but of course that's a lot more expensive than using rechargeables. Makes me wonder how long it will be before there's a high-endurance, reasonably-priced 1.5-V rechargeable AA to replace under-performing "rechargeable alkalines." That's got to be the holy grail of the battery industry. 73, Wayne N6KR Paul Webb wrote: All power outs measured using the elecraft DL1 and a good Calibrated Fluke Meter 80m = 3.74W 40m = 4.14 W 30m = 4.74 W 20m = 3.12 W Running of nicads I get (7.4Volts on display this morning) 80m = 0.88 W 40m = 0.94 W 30m = 1.18 W 20m = 0.76 W --- 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] KAF2 or KDSP2 for K2 #5287
Great reply Vic, Let's widen the question to make it KAF2 or KDSP2 or NOTHING? Does the basic K2's crystal filtering work well enough that you (any of you) would be happy with no AF filtering or does the AF/DSP filtering add enough that you wouldn't want to be without it? - Keith KD1E - -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Vic K2VCO Recently, I took out the DSP and put back the KAF2. After getting used to missing the noise reduction, I found that I prefer the KAF2. ___ 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] KAF2 or KDSP2 for K2 #5287
Alexander Ponomarenko wrote: I have the question. How much better working KDSP2? It has very expensive price. Are the KDSP2 really so good working that I have to pay "half K2 price"? I have both of them. Keep in mind that I am only a CW operator, so you will have to get the opinion of an SSB guy if you want to know about that! The KAF2 does nothing for SSB, while the DSP provides filtering and hetrodyne removal. The DSP has the advantage of including a noise-reduction function. It does not make it possible to copy a station that you can't copy without it, but it does make it more comfortable to copy a station that is close to the noise level. The DSP has more flexibility in selecting bandwidths and better shape characteristics than the KAF2. In practical terms, though, I don't think this translates into the ability to work stations that you could not work with the KAF2. One DSP problem is that the noise reduction, if you use it, distorts the leading edge of a weak signal which degrades copy. You need to back off the aggressiveness of the function to avoid this, which makes it less effective. A negative factor, at least in my case, is that the QSK is not as clean with the DSP installed. I've spent some time trying to clean up clicks (only in the receiver, not transmitted) that are related to the delay introduced by the DSP. I haven't succeeded. Recently, I took out the DSP and put back the KAF2. After getting used to missing the noise reduction, I found that I prefer the KAF2. -- 73, Vic, K2VCO Fresno CA http://www.qsl.net/k2vco ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: Re: [Elecraft] KX1 on 17 meters?
Thanks Mike, (as well as Paul and Tom), I just finished studying the KX1 schematic and AD9834 data sheet. You are right on. Analog devices also has an interesting DDS primer at http://www.analog.com/library/analogDialogue/archives/39-08/dds_apps.html if anyone is interested. As an aside, I have been a reader of the Elecraft group for a few months now, as well as some other radio specific groups. This is by far the most informative group that I have read. I have learned alot from the morning read. thanks to all. I think it is half the draw towards Elecraft. NowKX1 or K1 73's, Pete wd4lst > > From: Mike Morrow <[EMAIL PROTECTED]> > Date: 2006/04/05 Wed PM 05:15:12 CDT > To: [EMAIL PROTECTED], elecraft@mailman.qth.net > Subject: Re: [Elecraft] KX1 on 17 meters? > > >I was wondering if anyone has considered a 17 meter option. > > The clocking rate of the KX1's AD9834 DDS chip is 50 MHz, the maximum rated > for the chip. Typically, the highest usable output frequency from a DDS chip > is no greater than about one-third the clock rate, or about 16.6 MHz. > ___ 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] XV-50 Power Output Question
Dennis WB0WAO asked: I know that the XV-50 ouput is 25w, but is there a way to _modify_ it so that its max output is around 10w? - Sure! The output power is controlled using the POWER control on your K2, or other 28 MHz if you're not using a K2. If you have a 28 MHz rig without a variable output power, you can still adjust the output from the XV50 over a fairly wide range by selecting various combinations of jumpers and adjusting a trimmer pot in the XV50. I've only used a transverter with the K2, so I can't say that the range of the internal attenuators will let you select 10 watts out for any fixed input power within its working range, but it's quite flexible. Ron AC7AC ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
RE: [Elecraft] KXB-3080
Jerry, WA2DKG wrote: I have done 2 of these conversions and noticed something to be careful of...Underneath L2, in back of J7, leads L2-1 and L2-4 pass over each other and can short out toroid L2...I used a dental pick to move the wire lead from L2-1 away from L2-4...This is a hidden area in under L2 and right next to J-7...I used a bright LED penlight light and a magnifier to see it... --- Excellent observation, and something to watch for. That's why there are specific stripping instructions for the toroid wires on page 14 where it calls for leaving 1/8" of enamel on L2-1 to avoid just such a short. But even if you strip it all the way to the toroid, moving the wire away from the solder pad for L2-4 will work fine. Ron AC7AC ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] Kenwood MC-43S hand held mic for sale
Kenwood MC-43S hand held mic for sale, nice addition for the K2 since the Heil MH-2 is now obsolete. Set the compression to level 3 and the mic gain to 2 and you are in business. No more resistors on the mic header to worry about. I want $45.00 plus 4.75 for Priority Mail shipping. 73, Charlie, W0YG..>> ___ 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] KXB-3080
Randy: I have done 2 of these conversions and noticed something to be careful of...Underneath L2, in back of J7, leads L2-1 and L2-4 pass over each other and can short out toroid L2...I used a dental pick to move the wire lead from L2-1 away from L2-4...This is a hidden area in under L2 and right next to J-7...I used a bright LED penlight light and a magnifier to see it... Jerry, wa2dkg ___ 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] KAF2 or KDSP2 for K2 #5287
Actually it might be more like saying "The MFJ antenna analyzer cannot be used in strong RF fields and other analyzers that I have used cannot be used in strong RF fields so I wouldn't recommend buying an antenna analyzer to check a Field Day dipole attached to the tower of a 50KW broadcast station." I'm saying that ANY DSP radio Ten-Tec, Yaesu or Elecraft with RF or AF processing requires bandwidth to process the signal and throw away the noise. Once you get a bandwidth under 200Hz the DSP code has little to work with to improve copy and can actually degrade the signal by adding artifacts. Compare the KDSP2 to the KAF2 at 200Hz in a thunderstorm and then tell me which you prefer. Since you did not say what mode you intend to operate nor what bandwith you prefer I could only state my experience from my operating conditions. If you operated narrow bandwidth (under 200Hz) CW I suspect you would not feel the KDSP2 was worth the added expense. - Original Message - From: "Alexandra Carter" <[EMAIL PROTECTED]> To: "Tom Althoff" <[EMAIL PROTECTED]> Cc: Sent: Thursday, April 06, 2006 6:21 AM Subject: Re: [Elecraft] KAF2 or KDSP2 for K2 #5287 To me that's like saying "The MFJ antenna analyzer has given me nothing but trouble therefore I won't buy ANY antenna analyzer". I won't go into what company I think is gradually buying Ten-Tec as their founders die off.. Alex. On Apr 6, 2006, at 3:10 AM, Tom Althoff wrote: It depends on how you operate Alexander.My experience with the Ten-Tec Orion's DSP as well as external audio DSP's on the K2 convinced me not to buy the KDSP2 option for the K2.Tom K2TA ___ 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] KAF2 or KDSP2 for K2 #5287
To me that's like saying "The MFJ antenna analyzer has given me nothing but trouble therefore I won't buy ANY antenna analyzer". I won't go into what company I think is gradually buying Ten-Tec as their founders die off.. Alex. On Apr 6, 2006, at 3:10 AM, Tom Althoff wrote: It depends on how you operate Alexander.My experience with the Ten-Tec Orion's DSP as well as external audio DSP's on the K2 convinced me not to buy the KDSP2 option for the K2.Tom K2TA ___ 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] KAF2 or KDSP2 for K2 #5287
It depends on how you operate Alexander.My experience with the Ten-Tec Orion's DSP as well as external audio DSP's on the K2 convinced me not to buy the KDSP2 option for the K2. I mainly operate CW. I tune around at 800Hz bandwidth but typically operate at 150-200Hz. At such narrow bandwidths turning the DSP on and off has very little effect.On SSB and wider CW bandwidths the DSP sounds impressive. The KAF2 gives me the best bang for the buck. I forget the exact settings but I think it's around 1.4Khz for filter 1 and 200Hz for filter 2. The KDSP2 does have an operating convenience that lets it remember settings and "track" the IF bandwidth. The KAF2 defaults to "off" on power up of the K2. Tom K2TA - Original Message - From: "Alexander Ponomarenko" <[EMAIL PROTECTED]> To: "Elecraft Group" Sent: Thursday, April 06, 2006 2:38 AM Subject: [Elecraft] KAF2 or KDSP2 for K2 #5287 Hi! I have the question. How much better working KDSP2? It has very expensive price. Are the KDSP2 really so good working that I have to pay "half K2 price"? TNX for any answer! -- 72 & 73! de UR5LAM Alexander Ponomarenko RU-QRP-CLUB #103 mailto: [EMAIL PROTECTED] www.qrp.ru ___ 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] XV-50 Power Output Question
I am very serioulsy considering getting a XV-50 for 6m to replace my old FT-620B rig (lots of good Q's from that one!) and have a question: I know that the XV-50 ouput is 25w, but is there a way to _modify_ it so that its max output is around 10w? I have a 10w --> 150w brick that I would like to use, and I can't see buying a new brick if I don't have to. 25w is adequate for Es and F2 (to a certain extent), but I need a bit more than 25w for AU (which I get a lot of this far north)! Apologies if this has been covered before, but I didn't see anything in the archives off hand. 73 Dennis - WB0WAO EN84ij Iosco County, Michigan K2 #3555 QRP-L #2348 (R.I.P.) :=) _ Express yourself instantly with MSN Messenger! Download today - it's FREE! http://messenger.msn.click-url.com/go/onm00200471ave/direct/01/ ___ 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] My Power out with 3080 fitted and mod kit
HI I have the 3080 module fitted in my KX1 and I have already done the power mod With the display reading 13.5v I get the following outputs All power outs measured using the elecraft DL1 and a good Calibrated Fluke Meter 80m = 3.74W 40m = 4.14 W 30m = 4.74 W 20m = 3.12 W Running of nicads I get (7.4Volts on display this morning) 80m = 0.88 W 40m = 0.94 W 30m = 1.18 W 20m = 0.76 W I know the power output is a little high on 13.8 volt bench supply (13.5v after internal diode) but I only want to use this radio out and about where I will Be running on Battery rather than bench PSU so I am not to worried and main bands of operation are 80/40m All the best and I hope this helps anyone thinking about doing the power mod, PS I was ½ - 1 watt less on all bands at 13.8V supply before the mod. 73 Paul M0BMN -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.385 / Virus Database: 268.3.5/302 - Release Date: 05/04/2006 ___ 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
