[Elecraft] UK Elecraft Net
Hi all, Just a quick note to let you know there will be no Elecraft net on Boxing Day, nor the week after. The net will resume on the 9th of January. In the meantime, keep warm and have a very Merry Christmas. 73 Ian -- Ian J Maude, G0VGS SysOp GB7MBC & HB9DRV-9 DX Clusters Member RSGB, GQRP 9838, FISTS 14077 | K3 #455 http://www.m0scg.org.uk __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Rig Comparison
On Wed, Dec 22, 2010 at 8:56 PM, Steve Ellington wrote: > ...in comparison to 2 recent competitors, it's the BIG DOG... Yeah, but (setting aside all other performance comparisons), it can have 2 independent receivers. An A/B "dual watch" radio is not a hardcore DX radio, hence not on the radar of many K3 owners, and not a real competitor. A size comparison of the K3 to other 2-receiver radios (e.g. the brand-Y 46-pounder) tells a different tale. Tony KT0NY __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Rig Comparison
Dave: Sorry to dissapoint you but it's a photo (as I said). I copied the photo from the Yahoo Eagle group. You compare them visually. I own a K3 but not the other 2 rigs. I keep hearing about how small the K3 is but in comparison to 2 recent competitors, it's the BIG DOG on the block. Steve N4LQ - Original Message - From: "David Yarnes" To: Sent: Wednesday, December 22, 2010 9:12 PM Subject: [Elecraft] Rig Comparison > Steve, > > I appreciate your enthusiasm, but this is hardly a rig comparison!!! > How about something with a little substance to it! > > > Dave W7AQK > > > > --- > Here is a photo of all 3 rigs from a post on the Eagle reflector. > > http://n4lq.webs.com/apps/photos/photo?photoid=110659922 > > WxHxD inches > > K3 11.1 x 4.4 x 11.8 9.4lbs > TS-590 10.63 x 3.78 x 11.46 16.31lbs > Eagle 8.5 x 2.9 x 10.25 7.25lbs > > > Steve > N4LQ > > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] Rig Comparison
Steve, I appreciate your enthusiasm, but this is hardly a rig comparison!!! How about something with a little substance to it! Dave W7AQK --- Here is a photo of all 3 rigs from a post on the Eagle reflector. http://n4lq.webs.com/apps/photos/photo?photoid=110659922 WxHxD inches K3 11.1 x 4.4 x 11.8 9.4lbs TS-590 10.63 x 3.78 x 11.46 16.31lbs Eagle 8.5 x 2.9 x 10.25 7.25lbs Steve N4LQ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] [Elecraft_K3] Re: SSB receive audio quality
For the ones who will like to hear how well the K3 sounds click on this link to access a directory of MP3's on my own website: http://www.ad4c.us/Elecraft%20K3/shared%20files%20from%20K3%20users/AD4C%20recordings%20on%20his%20K3/ Then you can make your mind if it sound good or bad compared with other radios. AD4C It sure would be nice for people passing these judgments to provide sound clips that demonstrates this. It really isn't rocket science to run a rig's audio into a soundcard and make an fb recording and then more than one person can listen, compare, and discuss. 73, Barry N1EU Yahoo! Groups Links __._,_.___ Reply to sender | Reply to group | Reply via web post | Start a New Topic Messages in this topic (28) Recent Activity: New Members 9 New Photos 1 New Files 5 Visit Your Group MARKETPLACE Be a homeroom hero! Help Yahoo! donate up to $350K to classrooms! Get great advice about dogs and cats. Visit the Dog & Cat Answers Center. Stay on top of your group activity without leaving the page you're on - Get the Yahoo! Toolbar now. Switch to: Text-Only, Daily Digest • Unsubscribe • Terms of Use . __,_._,___ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] Weighted Tuning Knobs - Any Consequence?
I have had a set of these tuning knobs on both my K3 and K2 for over 6 months. I really like them and have not experienced any problems in any way. They look beautiful and provide a nice solid feel. -- Jerry K8RA __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] KX1 K1 Operating in Wet Environment
Dear Gang: I am wondering what the experiences of the group are in operating from a wet environment--say, in a kayak, or just QRP portable when it is drizzling and you can't be in a shelter or tent? I have finally figured out how to mount an antenna into my inflatable kayak (I think--as yet untried), and I'm hoping for some operating ideas other than keeping the rig inside a dry bag while operating. Has anyone tried to make a KX1 splashproof by enclosing it in something akin to a heavy baggie, with rubber bands wound around the bag where the antenna, key, and power cables come through? It wouldn't be waterproof, but it might work. 73, Eric WD6DBM __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] KRC2 relay boxes used?
Can anyone recommend a relay box to use with a KRC2, that is also small and lightweight? I have my K3 plugged into a Top Ten Devices band decoder and relay box, but I was hoping for something smaller for the KRC2 used with a K2 in the field. I only need 3 or 4 outputs. Thanks and 73 Eric WD6DBM __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] muting audio on PSK
ta d! I knew there had to be a simple fix Thank you Joe and also thanks to everyone else for their input I now have quiet XMIT and a happy XYL 73 Paul, NU4C From: "Joe Subich, W4TV" To: elecraft@mailman.qth.net; n...@bellsouth.net Sent: Wed, December 22, 2010 5:48:24 PM Subject: Re: [Elecraft] muting audio on PSK Paul, Are you aware that the MON level is saved on a per mode basis? Did you check MON while in Data mode (assuming you are using DATA A for PSK31)? 73, ... Joe, W4TV On 12/22/2010 5:04 PM, Paul Milward wrote: > tnx for all the responses > I have a pair of stereo speakers connected to the back of the K3. I also have a > Yamaha headset connected, both the speakers and headset are always active. This > setup allows me to monitor from across the room and also to rapidly access the > headset when necessary. Obviously I do not need audio for PSK. Received audio >is > easily silenced by setting audio gain to zero, but transmit audio is always > present regardless of the Power setting. The MON=0 and the audio is produced in > the k3 not the computer. > I use a pair of stereo cables from the I/O on the back of the rig to the >(audio) > I/O on the laptop > > > > > > From: Wes Stewart > To: elecraft reflector; Paul Milward > > Sent: Wed, December 22, 2010 12:20:32 PM > Subject: Re: [Elecraft] muting audio on PSK > > 1) Are you sure it's coming out of the K3 and not the sound card? > > 2) Does transmitter power affect it? > > Wes N7WS > > --- On Wed, 12/22/10, Paul Milward wrote: > >> From: Paul Milward >> Subject: Re: [Elecraft] muting audio on PSK >> To: "elecraft reflector" >> Date: Wednesday, December 22, 2010, 9:50 AM >> Nope >> MON=0 >> the mystery continues >> nu4c >> >> >> >> >> > >> Could this be the Monitor Gain? >> >> Try pressing the bottom right knob to the left of the VFO >> for about a half >> second (HOLD time), the VFO B area should say "MON xx" >> where xx is a number, >> and rotate the knob to a lower setting. This knob is also >> used for >> compression, transmit power, etc. >> >> 73 de Dick, K6KR >> >> >> -Original Message- > >> >> Hi folks >> I need a little help. I am using the K3 on PSK a lot. I >> turn the audio gain >> to >> zero and that mutes received audio. However, I cannot find >> a way to mute the >> >> transmit audio (annoying whine). I have rear and reread the >> manual and >> cannot >> find any help. >> Does anyone know how to mute transmit audio on PSK? >> tu >> Paul, NU4C > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] [K3] KREF3 External Reference Option
Prototypes are working perfectly. We're getting ready for field testing. Wayne N6KR http://www.elecraft.com On Dec 22, 2010, at 4:41 PM, tsmith...@cix.co.uk (Trevor Smithers) wrote: > Any news on the External Reference Option ? > > 73 > Trevor G0KTN > > Original Message from Wayne N6KR dated 14 June 2010 > > There appears to be more demand for this than we thought, so we're > looking into it again. > > Note that our planned external reference implementation would not > require an exact 49.38-MHz reference oscillator signal. It also > doesn't require a pin-1 control voltage input on the TCXO module > itself, as suggested earlier. It should work with any existing K3 > TCXO, either +/- 5 or +/- 1 PPM. > > If you're interested, here are the details: > > A new REF-lock module would be designed that plugs into the small 8- > pin connector near the top of the KREF3 PCB. The user's 10-MHz > reference signal would be routed from the rear panel to the TMP > connector on the KRE3 (this connector faces forward, into the DSP/ > front panel area). > > A microcontroller on the REF-lock module would be clocked by the 10- > MHz reference. If the signal were present, the microcontroller would > continuously measure (and average) the frequency of the 49.38 MHz > oscillator, obtaining a value to the nearest 1 Hz. Hysteresis would be > applied to prevent "hunting," so the actual accuracy spec would > probably be +/- 2 Hz. This translates to about +/- 1 Hz in operating > frequency on 20 m. > > Approximately once per second, the module would report the actual > reference frequency to the K3's main MCU via a slow digital data line > (labeled "100HZ" on the RF and KREF3 schematics). The main MCU would > use this to calibrate the REF CAL value normally entered by the user. > There would be no noticeable impact on performance. > > If the 10 MHz external signal were not present, the user's normal REF > CAL value would be used. > > Let me know if you have thoughts on this implementation. > > 73, > Wayne > N6KR > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] [K3] KREF3 External Reference Option
Any news on the External Reference Option ? 73 Trevor G0KTN Original Message from Wayne N6KR dated 14 June 2010 There appears to be more demand for this than we thought, so we're looking into it again. Note that our planned external reference implementation would not require an exact 49.38-MHz reference oscillator signal. It also doesn't require a pin-1 control voltage input on the TCXO module itself, as suggested earlier. It should work with any existing K3 TCXO, either +/- 5 or +/- 1 PPM. If you're interested, here are the details: A new REF-lock module would be designed that plugs into the small 8- pin connector near the top of the KREF3 PCB. The user's 10-MHz reference signal would be routed from the rear panel to the TMP connector on the KRE3 (this connector faces forward, into the DSP/ front panel area). A microcontroller on the REF-lock module would be clocked by the 10- MHz reference. If the signal were present, the microcontroller would continuously measure (and average) the frequency of the 49.38 MHz oscillator, obtaining a value to the nearest 1 Hz. Hysteresis would be applied to prevent "hunting," so the actual accuracy spec would probably be +/- 2 Hz. This translates to about +/- 1 Hz in operating frequency on 20 m. Approximately once per second, the module would report the actual reference frequency to the K3's main MCU via a slow digital data line (labeled "100HZ" on the RF and KREF3 schematics). The main MCU would use this to calibrate the REF CAL value normally entered by the user. There would be no noticeable impact on performance. If the 10 MHz external signal were not present, the user's normal REF CAL value would be used. Let me know if you have thoughts on this implementation. 73, Wayne N6KR __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Weighted Tuning Knobs - Any Consequence?
Ron, Oh yes, that National knob (and gear reduction housing) was a great one. I used it on several of my homebrew receivers - until the Eddystone 100:1 gearing slide rule dial became available - that was a great one too. I still have the Eddystone on my revision of the HBR-16 (mine was an HBR-18 with a Q multiplier at 85 kHz), and another that is an incomplete chassis that was once destined to become a receiver (may become one in time, but the probability is small). My National NC-5 is unmodified, and although it sits in my attic, will never leave my hands due to sentimental reasons. But those were the days of yore where you had to have a calibration chart to find the frequency that was represented on that National dial (500 dial points), and the marks on the Eddystone slide rule dial had to be inscribed on the dial face or deciphered from the fixed scale on the slide rule. In those "days of yore", we did not care about frequency readouts to the nearest Hz (it was "cycles" back then), but only that one was operating within the band for the emission type. Within those limits, those dials worked very well and were comfortable to use. We now have accurate digital frequency readouts, and the only remaining discussion is how the knob "feels", "spins", "looks" and other such factors. Our needs these days have changed dramatically. I do worry about the long term durability of the encoders with quite heavy knobs, although I have not seen a K2 or a K3 that showed signs of encoder failure (yet). I had bought a couple of those old National knobs and gear boxes that had a worn elliptical shaft from extensive use and the dial would have "hard spots" in its rotation, so they were not immune to problems either. 73, Don W3FPR On 12/22/2010 6:08 PM, Ron D'Eau Claire wrote: > My favorite knob remains the huge tuning knob on my old National HRO5TA1 - > about 6 inches in diameter, weighs about half a pound and was about 10 turns > stop-to-stop. > > But the original question is a legitimate one. Are the simple bushings in > the encoders up to the weight of the after-market knobs? The big national > knob I mentioned had a huge lubricated bushing about 2 inches long > supporting a hardened steel main shaft in a hardened sintered bronze bushing > and, IIRC, so did the Collins rigs. > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Weighted Tuning Knobs - Any Consequence?
I picked up the weighted knobs for my K3 and K2 at Dayton and I absolutely love them. No issues here. Once you use them you won't go back IMHB. Jim Douglas K2ZF -Original Message- From: Phil LaMarche To: 'Jeff KB2M' ; Elecraft Sent: Wed, Dec 22, 2010 12:00 pm Subject: Re: [Elecraft] Weighted Tuning Knobs - Any Consequence? I wouldn't be without my heavy knob. Also put a Ten Tec outer ring on mine. Philip LaMarche LaMarche Enterprises, Inc p...@lamarcheenterprises.com www.LaMarcheEnterprises.com 727-944-3226 727-937-8834 Fax 727-510-5038 Cell www.w9dvm.com K3 #1605 CCA 98-00827 CRA 1701 W9DVM -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Jeff KB2M Sent: Wednesday, December 22, 2010 3:53 PM To: Elecraft@mailman.qth.net Subject: Re: [Elecraft] Weighted Tuning Knobs - Any Consequence? Oh I don't know about that. With my add on speaker system, and heavy knobs I can close my eyes and then can't tell if I'm tuning my 9000D or my heavy knobbed, external heavy dual speakered K3. Yes the heavy knobs add a nice feel to the K3, if you've got $100 to spend on something frivolous, you could easily do much worse... -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Ken Alexander Sent: Wednesday, December 22, 2010 12:04 PM To: Elecraft@mailman.qth.net; kx4oJohn Huggins Subject: Re: [Elecraft] Weighted Tuning Knobs - Any Consequence? Yes, you'll be about $100 poorer and have made absolutely no improvement to the performance or capabilities of your transceiver. 73, Ken Alexander VE3HLS --- On Wed, 12/22/10, John Huggins, kx4o wrote: > From: John Huggins, kx4o > Subject: [Elecraft] Weighted Tuning Knobs - Any Consequence? > To: Elecraft@mailman.qth.net > Date: Wednesday, December 22, 2010, 11:50 AM All, > > Does anyone know of any issues the extra weight of the "weighted > spinner knobs" such as these... > > http://www.73cnc.com/73cnc/elecraft.html > > ...might cause the bearing points of the tuning shaft in the K2 or K3? > > Thanks. > > John __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] OT: 10 watts in, 400 watts out amp
Tom, As I recall, the FCC 15 dB restriction is not applicable for amplifiers that operate above 50 MHz (or is it 30 MHz). In other words, it applies only to HF amplifiers. 73, Don W3FPR On 12/22/2010 5:59 PM, Amateur Radio Operator N5GE wrote: > I drive a TE Systems 2m solid state amp with the ten watts from the K144XV in > my > K3 and it puts out 350 watts. > > That's pretty close... > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] Fwd: Weighted Tuning Knobs - Any Consequence?
Hi Jack- I have an old Icom 765 that I was all fired up to put an inrad roofing filter into. The night before I was going to put it in I had a terrible nightmare. I was buried by inrad roofing filters and a man with a rubber duckie kept saying "It is blasphemous to alter original equipment" I woke up in a cold sweat and never put the filter in. My K3 will stay all original, thank you. 73's Skip KT9T Begin forwarded message: > From: Jack Brabham > Date: December 22, 2010 4:29:46 PM CST > To: elecraft@mailman.qth.net > Subject: Re: [Elecraft] Weighted Tuning Knobs - Any Consequence? > > I have set of the bronze knobs on my K3 #4165, and love them. > > I have found two principal consequences of this knob change, and an > indirect benefit. > > 1 - The radio looks a heck of a lot better IMHO. > > 2 - The radio tunes much easier and has a more of a "quality" feel > about > it, kind of like tuning a 75A4. I find that I use these knobs more > and > my pan-adapter less for basic frequency control. > > As a side benefit they seem to really irritate the Elecraft koolaid > drinkers on the list, whom I'm sure will explain in great detail why > the > original knobs could not possibly be improved upon. > > 73 Jack KZ5A > > > > > On 12/22/2010 10:50 AM, John Huggins, kx4o wrote: >> All, >> >> Does anyone know of any issues the extra weight of the "weighted >> spinner >> knobs" such as these... >> >> http://www.73cnc.com/73cnc/elecraft.html >> >> ...might cause the bearing points of the tuning shaft in the K2 or >> K3? >> >> Thanks. >> >> John >> __ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Weighted Tuning Knobs - Any Consequence?
Oh, now, Jack. It's not that the 'stock' Elecraft knobs can't be improved upon, it's that they aren't "original". Putting an aftermarket knob on is, for some, like putting custom mag wheels on a 1955 Rolls Royce Silver Cloud, Hi! My favorite knob remains the huge tuning knob on my old National HRO5TA1 - about 6 inches in diameter, weighs about half a pound and was about 10 turns stop-to-stop. But the original question is a legitimate one. Are the simple bushings in the encoders up to the weight of the after-market knobs? The big national knob I mentioned had a huge lubricated bushing about 2 inches long supporting a hardened steel main shaft in a hardened sintered bronze bushing and, IIRC, so did the Collins rigs. Ron AC7AC -Original Message- 1 - The radio looks a heck of a lot better IMHO. 2 - The radio tunes much easier and has a more of a "quality" feel about it, kind of like tuning a 75A4. I find that I use these knobs more and my pan-adapter less for basic frequency control. As a side benefit they seem to really irritate the Elecraft koolaid drinkers on the list, whom I'm sure will explain in great detail why the original knobs could not possibly be improved upon. 73 Jack KZ5A >http://www.73cnc.com/73cnc/elecraft.html > > ...might cause the bearing points of the tuning shaft in the K2 or K3? > > Thanks. > > John Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] OT: 10 watts in, 400 watts out amp
I drive a TE Systems 2m solid state amp with the ten watts from the K144XV in my K3 and it puts out 350 watts. That's pretty close... 73, Tom Childers Radio Amateur N5GE Licensed since 1976 QCWA Member 35102 ARRL Life Member Retired Professional C# Software developer On Wed, 22 Dec 2010 08:42:59 -0500, DOUGLAS ZWIEBEL wrote: >Someone said they weren't aware of any amps that do 5 in 100 out. How >about 10 in and 400 out? >No, not FCC type accepted, but it's available. I'm sure there are others. > >http://www.thp.co.jp/english/hl_700b_e.html > >de Doug KR2Q >__ >Elecraft mailing list >Home: http://mailman.qth.net/mailman/listinfo/elecraft >Help: http://mailman.qth.net/mmfaq.htm >Post: mailto:Elecraft@mailman.qth.net > >This list hosted by: http://www.qsl.net >Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Weighted Tuning Knobs - Any Consequence?
Heavy knobs Rock! You spin and it's inertia has you scanning - watching your P3 looking for blips. Treat yourself to a really good feeling. Not here for a long time - just a good time. 73 Sent from my iPhone John Seney WD1V On Dec 22, 2010, at 5:01 PM, Phil LaMarche wrote: > I wouldn't be without my heavy knob. Also put a Ten Tec outer ring on mine. > > Philip LaMarche > > LaMarche Enterprises, Inc > p...@lamarcheenterprises.com > www.LaMarcheEnterprises.com > > 727-944-3226 > 727-937-8834 Fax > 727-510-5038 Cell > > www.w9dvm.com > > K3 #1605 > > CCA 98-00827 > CRA 1701 > W9DVM > > > -Original Message- > From: elecraft-boun...@mailman.qth.net > [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Jeff KB2M > Sent: Wednesday, December 22, 2010 3:53 PM > To: Elecraft@mailman.qth.net > Subject: Re: [Elecraft] Weighted Tuning Knobs - Any Consequence? > > Oh I don't know about that. With my add on speaker system, and heavy knobs > I can close my eyes and then can't tell if I'm tuning my 9000D or my heavy > knobbed, external heavy dual speakered K3. Yes the heavy knobs add a nice > feel to the K3, if you've got $100 to spend on something frivolous, you > could easily do much worse... > > -Original Message- > From: elecraft-boun...@mailman.qth.net > [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Ken Alexander > Sent: Wednesday, December 22, 2010 12:04 PM > To: Elecraft@mailman.qth.net; kx4oJohn Huggins > Subject: Re: [Elecraft] Weighted Tuning Knobs - Any Consequence? > > Yes, you'll be about $100 poorer and have made absolutely no improvement to > the performance or capabilities of your transceiver. > > 73, > > Ken Alexander > VE3HLS > > > > --- On Wed, 12/22/10, John Huggins, kx4o wrote: > >> From: John Huggins, kx4o >> Subject: [Elecraft] Weighted Tuning Knobs - Any Consequence? >> To: Elecraft@mailman.qth.net >> Date: Wednesday, December 22, 2010, 11:50 AM All, >> >> Does anyone know of any issues the extra weight of the "weighted >> spinner knobs" such as these... >> >> http://www.73cnc.com/73cnc/elecraft.html >> >> ...might cause the bearing points of the tuning shaft in the K2 or K3? >> >> Thanks. >> >> John > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Weighted Tuning Knobs - Any Consequence?
I have set of the bronze knobs on my K3 #4165, and love them. I have found two principal consequences of this knob change, and an indirect benefit. 1 - The radio looks a heck of a lot better IMHO. 2 - The radio tunes much easier and has a more of a "quality" feel about it, kind of like tuning a 75A4. I find that I use these knobs more and my pan-adapter less for basic frequency control. As a side benefit they seem to really irritate the Elecraft koolaid drinkers on the list, whom I'm sure will explain in great detail why the original knobs could not possibly be improved upon. 73 Jack KZ5A On 12/22/2010 10:50 AM, John Huggins, kx4o wrote: > All, > > Does anyone know of any issues the extra weight of the "weighted spinner > knobs" such as these... > >http://www.73cnc.com/73cnc/elecraft.html > > ...might cause the bearing points of the tuning shaft in the K2 or K3? > > Thanks. > > John > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3BSR
Dick >From what i can tell, k3bsr was written by WB8YQJ. I looked him up on QRZ.com and his email address is listed so you might try emailing him. Steve N4LQ - Original Message - From: "Edward Dickinson, III" To: Sent: Wednesday, December 22, 2010 4:37 PM Subject: Re: [Elecraft] K3BSR > Hi Tom, > > Thanks for the thought. I've searched via Google...now twice. In > particular, "K3BSR download" yields a rather short list and produces > nothing > useful that I can discern. > > Most of what I find there, as I indicated are links to references in > archived Elecraft email reflector postings...some lead to screenshots. > Additionally there are references to zerobeat.net which yield, "The > webpage > cannot be found." > > Am I overlooking something? Do you know something I don't..? If you have > something useful, then please...on with it. > > > 73, > Dick - KA5KKT > > > --- > > I try my best to be polite and suggest you simply do a Google search for > K3BSR. That way you could find numerous references to the latest release. > > Tom - W4BQF > > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] muting audio on PSK
tnx for all the responses I have a pair of stereo speakers connected to the back of the K3. I also have a Yamaha headset connected, both the speakers and headset are always active. This setup allows me to monitor from across the room and also to rapidly access the headset when necessary. Obviously I do not need audio for PSK. Received audio is easily silenced by setting audio gain to zero, but transmit audio is always present regardless of the Power setting. The MON=0 and the audio is produced in the k3 not the computer. I use a pair of stereo cables from the I/O on the back of the rig to the (audio) I/O on the laptop From: Wes Stewart To: elecraft reflector ; Paul Milward Sent: Wed, December 22, 2010 12:20:32 PM Subject: Re: [Elecraft] muting audio on PSK 1) Are you sure it's coming out of the K3 and not the sound card? 2) Does transmitter power affect it? Wes N7WS --- On Wed, 12/22/10, Paul Milward wrote: > From: Paul Milward > Subject: Re: [Elecraft] muting audio on PSK > To: "elecraft reflector" > Date: Wednesday, December 22, 2010, 9:50 AM > Nope > MON=0 > the mystery continues > nu4c > > > > > > Could this be the Monitor Gain? > > Try pressing the bottom right knob to the left of the VFO > for about a half > second (HOLD time), the VFO B area should say "MON xx" > where xx is a number, > and rotate the knob to a lower setting. This knob is also > used for > compression, transmit power, etc. > > 73 de Dick, K6KR > > > -Original Message- > > Hi folks > I need a little help. I am using the K3 on PSK a lot. I > turn the audio gain > to > zero and that mutes received audio. However, I cannot find > a way to mute the > > transmit audio (annoying whine). I have rear and reread the > manual and > cannot > find any help. > Does anyone know how to mute transmit audio on PSK? > tu > Paul, NU4C __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Weighted Tuning Knobs - Any Consequence?
I wouldn't be without my heavy knob. Also put a Ten Tec outer ring on mine. Philip LaMarche LaMarche Enterprises, Inc p...@lamarcheenterprises.com www.LaMarcheEnterprises.com 727-944-3226 727-937-8834 Fax 727-510-5038 Cell www.w9dvm.com K3 #1605 CCA 98-00827 CRA 1701 W9DVM -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Jeff KB2M Sent: Wednesday, December 22, 2010 3:53 PM To: Elecraft@mailman.qth.net Subject: Re: [Elecraft] Weighted Tuning Knobs - Any Consequence? Oh I don't know about that. With my add on speaker system, and heavy knobs I can close my eyes and then can't tell if I'm tuning my 9000D or my heavy knobbed, external heavy dual speakered K3. Yes the heavy knobs add a nice feel to the K3, if you've got $100 to spend on something frivolous, you could easily do much worse... -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Ken Alexander Sent: Wednesday, December 22, 2010 12:04 PM To: Elecraft@mailman.qth.net; kx4oJohn Huggins Subject: Re: [Elecraft] Weighted Tuning Knobs - Any Consequence? Yes, you'll be about $100 poorer and have made absolutely no improvement to the performance or capabilities of your transceiver. 73, Ken Alexander VE3HLS --- On Wed, 12/22/10, John Huggins, kx4o wrote: > From: John Huggins, kx4o > Subject: [Elecraft] Weighted Tuning Knobs - Any Consequence? > To: Elecraft@mailman.qth.net > Date: Wednesday, December 22, 2010, 11:50 AM All, > > Does anyone know of any issues the extra weight of the "weighted > spinner knobs" such as these... > > http://www.73cnc.com/73cnc/elecraft.html > > ...might cause the bearing points of the tuning shaft in the K2 or K3? > > Thanks. > > John __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] WTB: Elecraft K2 -- KDSP2 and USB unit
Hi again -- I am having trouble spelling -- I have been corrected so here goes -- LOL! I stand corrected -- Rick NU7Z -Original Message- From: nu7z To: elecraft Sent: Wed, Dec 22, 2010 1:41 pm Subject: WTB: Elecraft K2 -- KDSP2 and USB unit Hi to the group -- I am looking for a KDSP2 for my K2 as well a KUSB unit -- Have you got one that you can let go of? Please contact me off the reflector -- Thanks -- Rick NU7Z n...@aol.com Bill made me do it!! __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] WTB: Elecraft K2 -- KDSP2 and USB unit
hi to the group -- I am looking for a KDSP2 for my K2 as well a KUSB unit -- Have you got one that you can let of? Please contact me of the reflector -- Thanks -- Rick NU7Z n...@aol.com Bill made me do it!! __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3BSR
Hi Tom, Thanks for the thought. I've searched via Google...now twice. In particular, "K3BSR download" yields a rather short list and produces nothing useful that I can discern. Most of what I find there, as I indicated are links to references in archived Elecraft email reflector postings...some lead to screenshots. Additionally there are references to zerobeat.net which yield, "The webpage cannot be found." Am I overlooking something? Do you know something I don't..? If you have something useful, then please...on with it. 73, Dick - KA5KKT --- I try my best to be polite and suggest you simply do a Google search for K3BSR. That way you could find numerous references to the latest release. Tom - W4BQF __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] 100 Watts or 500 Watts
I have worked as a BC engineer and I'm very, very careful. In addition to following work procedures like the use of a 'shorting stick', there are various design principles important for safety. There should never be a way for someone to come into contact with HV, no matter what component or combination thereof fails (within reason, of course). Just for example: you often see a 'safety' RF choke across the output of a pi-network. Supposedly this will cause a fuse to blow if the plate blocking capacitor breaks down and puts HV on the antenna. But most such chokes are too puny -- they will blow before the fuse! Interconnections between remote power supplies and RF decks are another risky area. I prefer to put it all in one box, or at least an enclosed rack. I only work on such projects when I am feeling 1) alert and 2) patient. 'Patient' is really important. If you are operating in the 'every time I try to fix something I break something else' mode, then STOP. I like to spend a lot of time thinking about what I'm about to do before doing it. This is getting off-topic for the reflector, so this will be my last post on the subject! On 12/22/2010 11:36 AM, Ron D'Eau Claire wrote: > Good point George. The question was specifically about the 813 and it's a > "nostalgia bottle" for many of us. It was popular after WWII because you > could get them for as little as 50 cents each in the USA. Even in the 60's > they were still available 'surplus' for a few dollars. Typically the socket > cost far more than the tube. > > The biggest cost in a tube amp is in the power supply (including high > voltage hardware) and in the input/output network components that can handle > the voltages involved. > > You can avoid those costs by buying a used amp, even if it's not functional > (but hopefully has a good power transformer). > > Other than learning to work around thousands of volts (only one mistake > allowed per lifetime) tube amps are extremely simple things compared to most > high power solid state amps. And tubes tend to be much more tolerant of > abuse than solid state. > > But that comment about only one mistake allowed per lifetime around the > typical tube amp power supply was serious. I'm always very cautious about > encouraging today's typical ham to mess around with even moderate or low > power tube gear if he/she has "grown up" around solid state running from a > few tens of volts at the most. One needs a wholly different set of > procedures, concerns and attitudes to work around even a few hundred volts > safely. > > Over the years we've lost a number of wonderful, bright, prolific designers > and builders in the Ham community to one momentary mis-step around a high > voltage power supply. > > Ron AC7AC > > > -Original Message- > > Just some simple questions. Why use an 813 for an amp. 125 watt plate > dissipation, 50 watts of heater power, and a large physical size. The > "modern" > 572b uses 25 watts for heater power has 225 watts dissipation and is cheap. > I > have two SB200s they put out 800 watts PEP and they can be bought real > inexpensive. Every couple of years I stick new tubes in them for kicks and > use > the pulls as spares or "presents". > > I love building, but I am practical too. But have fun guys and please be > careful. > > George, W6GF > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html -- Vic, K2VCO Fresno CA http://www.qsl.net/k2vco/ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3BSR
I try my best to be polite and suggest you simply do a Google search for K3BSR. That way you could find numerous references to the latest release. Tom - W4BQF -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Edward Dickinson, III Sent: Wednesday, December 22, 2010 3:04 PM To: Elecraft Reflector Subject: [Elecraft] K3BSR I'm doing some (computer) housekeeping here. I find my installation of K3BSR won't run per 32/64 bit related concerns. I'm running Windows 7, 64-bit. In searching online, most of what I come up with are references contained in the Elecraft archives. A link towards the original source seemed to come up empty-handed. Is K3BSR still a functional and available program? 73, Dick - KA5KKT __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Weighted Tuning Knobs - Any Consequence?
Oh I don't know about that. With my add on speaker system, and heavy knobs I can close my eyes and then can't tell if I'm tuning my 9000D or my heavy knobbed, external heavy dual speakered K3. Yes the heavy knobs add a nice feel to the K3, if you've got $100 to spend on something frivolous, you could easily do much worse... -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Ken Alexander Sent: Wednesday, December 22, 2010 12:04 PM To: Elecraft@mailman.qth.net; kx4oJohn Huggins Subject: Re: [Elecraft] Weighted Tuning Knobs - Any Consequence? Yes, you'll be about $100 poorer and have made absolutely no improvement to the performance or capabilities of your transceiver. 73, Ken Alexander VE3HLS --- On Wed, 12/22/10, John Huggins, kx4o wrote: > From: John Huggins, kx4o > Subject: [Elecraft] Weighted Tuning Knobs - Any Consequence? > To: Elecraft@mailman.qth.net > Date: Wednesday, December 22, 2010, 11:50 AM > All, > > Does anyone know of any issues the extra weight of the > "weighted spinner > knobs" such as these... > > http://www.73cnc.com/73cnc/elecraft.html > > ...might cause the bearing points of the tuning shaft in > the K2 or K3? > > Thanks. > > John __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K2 es SPE AMP
Hi Does anyone have a wiring diagram to hook up a k2 to a SPE Expert amp. Thanks Happy Xmas. Ken..G0ORH CW4EVER Sent from my iPhone __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K3BSR
I'm doing some (computer) housekeeping here. I find my installation of K3BSR won't run per 32/64 bit related concerns. I'm running Windows 7, 64-bit. In searching online, most of what I come up with are references contained in the Elecraft archives. A link towards the original source seemed to come up empty-handed. Is K3BSR still a functional and available program? 73, Dick - KA5KKT __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] 100 Watts or 500 Watts
Good point George. The question was specifically about the 813 and it's a "nostalgia bottle" for many of us. It was popular after WWII because you could get them for as little as 50 cents each in the USA. Even in the 60's they were still available 'surplus' for a few dollars. Typically the socket cost far more than the tube. The biggest cost in a tube amp is in the power supply (including high voltage hardware) and in the input/output network components that can handle the voltages involved. You can avoid those costs by buying a used amp, even if it's not functional (but hopefully has a good power transformer). Other than learning to work around thousands of volts (only one mistake allowed per lifetime) tube amps are extremely simple things compared to most high power solid state amps. And tubes tend to be much more tolerant of abuse than solid state. But that comment about only one mistake allowed per lifetime around the typical tube amp power supply was serious. I'm always very cautious about encouraging today's typical ham to mess around with even moderate or low power tube gear if he/she has "grown up" around solid state running from a few tens of volts at the most. One needs a wholly different set of procedures, concerns and attitudes to work around even a few hundred volts safely. Over the years we've lost a number of wonderful, bright, prolific designers and builders in the Ham community to one momentary mis-step around a high voltage power supply. Ron AC7AC -Original Message- Just some simple questions. Why use an 813 for an amp. 125 watt plate dissipation, 50 watts of heater power, and a large physical size. The "modern" 572b uses 25 watts for heater power has 225 watts dissipation and is cheap. I have two SB200s they put out 800 watts PEP and they can be bought real inexpensive. Every couple of years I stick new tubes in them for kicks and use the pulls as spares or "presents". I love building, but I am practical too. But have fun guys and please be careful. George, W6GF __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 RFI Susceptibility
However, if the connector is grounded to a PC board, rather than directly to the chassis, the current on the shield ends up getting INSIDE the radio. This is the problem with some of the rear panel jacks on the K3. However, I understand why Elecraft mounted those connectors on the PC board, and simply wrapping the cable around a ferrite core should solve the problem. (If that works in my shack, it should work almost anywhere.) 73, Scott K9MA On Dec 22, 2010, at 12:18 PM, Jim Brown wrote: > YES! Here's the problem -- while that PTT line IS a DC line, because > it is a WIRE, it is also an ANTENNA, so it will carry RF current from > your TX and put it into the K3 PTT circuit (and into whatever is driving > the PTT circuit). That means we CANNOT treat it as a DC circuit. It is > an RF circuit, and must be wired with coax (or something like coax), > with the shield bonded to the chassis at each end. Now, the RF current > flows on the coax shield to the chassis at each end, so it does not > cause problems with the keying circuit. Scott Ellington Madison, Wisconsin USA __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] More- ] K2 barefoot + ALS-600
Mark, More on the K2 barefoot + ALS-600 from the Elecraft reflector. Dick Jim Brown wrote: >On 12/22/2010 9:44 AM, Derf Mockford wrote: > > >>The amp is very >>stable and all mods took about 3 hours to complete. >> >> > >If you're running the barefoot K2 higher than 10 watts, you should >probably take a careful look at the output of the ALS600 on a good >spectrum analyzer. I've heard good engineers familiar with the K2 say >that it's spectral purity degrades above 10 watts, which is why Elecraft >considers it a 10W radio. > >73, Jim K9YC > > >__ >Elecraft mailing list >Home: http://mailman.qth.net/mailman/listinfo/elecraft >Help: http://mailman.qth.net/mmfaq.htm >Post: mailto:Elecraft@mailman.qth.net > >This list hosted by: http://www.qsl.net >Please help support this email list: http://www.qsl.net/donate.html > > > > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K2 barefoot + ALS-600
Sounds like a great project Derf - It's always great to hear of a homebrew work in progress. Ron AC7AC From: Derf Mockford [mailto:d...@csldual.com] Sent: Wednesday, December 22, 2010 9:45 AM To: r...@cobi.biz; dpsa...@tx.rr.com; d...@w3fpr.com Cc: elecraft@mailman.qth.net Subject: K2 barefoot + ALS-600 Hi Ron, Phil & Don, further to your item below on the Elecraft reflector, I use the ALS600 with a barefoot K2. I appreciate that the required level of amp gain is illegal to supply in USA but customer mods are quite legitimate. The amp is ideal throttled-back for 400 watts max in UK. By removing the amp's 35 ohm input series resistor and the 33 ohm parallel resistor (3 x 100 ohms in parallel) that is across the amp's input transformer, the input impedance came down considerably. Using the K2 ATU, on 14.1MHz, 13 watts in = 600 watts out. The primary of the amp's input transformer was one turn only. It is Now re-wound with 3 turns as in the (almost identical) Communication Concepts EB104 amp. Input impedance is fairly close to 50 ohms for 1.9 to 20MHz. 6 watts in = 600 watts out. On 21 to 28 MHz, i/p Z is a bit off of 50 ohms, and up to 10 watts is required for full output. A 2db 50 ohm pi-attenuator was added on the input so that it is now a good match to the barefoot K2 and suits UK max power limits. I have no ALC connection from the amp to the K2, simply adjusting the K2 RF output to get the required RF from the amp. The amp is very stable and all mods took about 3 hours to complete. The ALS-600 includes the AD5X QSK mod. This was the first mod that I applied to the amp after purchase. Works perfectly. Phil, many thanks. To you all and to the many contributors to the Elecraft reflector, Merry Christmas. 73 Derf G8ZGK > > Subject: Elecraft Digest, Vol 80, Issue 42 > Message: 27 > Date: Mon, 20 Dec 2010 19:49:00 -0800 > From: "Ron D'Eau Claire" > Subject: Re: [Elecraft] OT: modifying your amp for lower drive requirement > To: ,"'Phil & Debbie Salas'" > Cc: elecraft@mailman.qth.net > Message-ID: <000f01cba0c2$020458d0$060d0a...@biz> > Content-Type: text/plain;charset="us-ascii" > > Sure, but it's very easy to design a low-loss broadband matching network to > provide the required impedance transformation. > > One HB amp of mine used a 16:1 transformer at the input for just that > purpose. > > Ron AC7AC > > -Original Message- > Phil, > Your statement amplifies the difference between "ham assumptions" and > reality. > The data-sheet indications of gain do not consider the input impedance > (and loading of the driver), that parameter is quite important in actual > use -- if the amplifier does not provide a good load to the driving > transmitter, then "all bets are off". > 73, > Don W3FPR > > On 12/20/2010 8:28 PM, Phil & Debbie Salas wrote: > "It's very unlikely any solid-state amplifier uses an input attenuator: > Transistors and FET's just don't have that much gain." > > The Ameritron ALS-600 has about a 15 ohm input impedance. Then they put a > series 35 ohm resistor for matching and reducing gain. > Phil - AD5X -- *** CSL DualCom Limited Registered Office: Salamander Quay West, Park Lane, Harefield, Middlesex UB9 6NZ Registered in England No. 3155883 This e-mail is only intended for the person(s) to whom it is addressed and may contain confidential information. Unless stated to the contrary, any opinions or comments are personal to the writer and do not represent the official view of the company. If you have received this e-mail in error, please notify us immediately by reply e-mail and then delete this message from your system. Please do not copy it or use it for any purposes, or disclose its contents to any other person. Thank you for your co-operation. *** __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K2 barefoot + ALS-600
On 12/22/2010 9:44 AM, Derf Mockford wrote: > The amp is very > stable and all mods took about 3 hours to complete. If you're running the barefoot K2 higher than 10 watts, you should probably take a careful look at the output of the ALS600 on a good spectrum analyzer. I've heard good engineers familiar with the K2 say that it's spectral purity degrades above 10 watts, which is why Elecraft considers it a 10W radio. 73, Jim K9YC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] 100 Watts or 500 Watts
I will throw out another opinion about amplifier gain that has nothing to do with CB or IMD. If an operator is currently running QRP at 10, 5 or less watts, adding the KPA-3 to boost power to 100 watts will give you a very large power boost and will be enough power for a lot of QSOs, both domestic and DX. You can still turn the K-3 down to 100 mw if you want to give your antennas and patience the acid test. If you add a 500 watt or bigger amplifier you have another nice boost in power and you have a combination that will give you smooth power increases from 100 mw to 500 watts or with a bigger amp the legal limit. To my way of thinking, this is a better combination than trying to solve the problems of home brewing or modifing a commercial amp. Food for thought? Willis 'Cookie' Cooke K5EWJ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K2 barefoot + ALS-600
Hi Ron, Phil & Don, further to your item below on the Elecraft reflector, I use the ALS600 with a barefoot K2. I appreciate that the required level of amp gain is illegal to supply in USA but customer mods are quite legitimate. The amp is ideal throttled-back for 400 watts max in UK. By removing the amp's 35 ohm input series resistor and the 33 ohm parallel resistor (3 x 100 ohms in parallel) that is across the amp's input transformer, the input impedance came down considerably. Using the K2 ATU, on 14.1MHz, 13 watts in = 600 watts out. The primary of the amp's input transformer was one turn only. It is Now re-wound with 3 turns as in the (almost identical) Communication Concepts EB104 amp. Input impedance is fairly close to 50 ohms for 1.9 to 20MHz. 6 watts in = 600 watts out. On 21 to 28 MHz, i/p Z is a bit off of 50 ohms, and up to 10 watts is required for full output. A 2db 50 ohm pi-attenuator was added on the input so that it is now a good match to the barefoot K2 and suits UK max power limits. I have no ALC connection from the amp to the K2, simply adjusting the K2 RF output to get the required RF from the amp. The amp is very stable and all mods took about 3 hours to complete. The ALS-600 includes the AD5X QSK mod. This was the first mod that I applied to the amp after purchase. Works perfectly. Phil, many thanks. To you all and to the many contributors to the Elecraft reflector, Merry Christmas. 73 Derf G8ZGK > > Subject: Elecraft Digest, Vol 80, Issue 42 > Message: 27 > Date: Mon, 20 Dec 2010 19:49:00 -0800 > From: "Ron D'Eau Claire" > Subject: Re: [Elecraft] OT: modifying your amp for lower drive requirement > To: ,"'Phil & Debbie Salas'" > Cc: elecraft@mailman.qth.net > Message-ID: <000f01cba0c2$020458d0$060d0a...@biz> > Content-Type: text/plain;charset="us-ascii" > > Sure, but it's very easy to design a low-loss broadband matching network to > provide the required impedance transformation. > > One HB amp of mine used a 16:1 transformer at the input for just that > purpose. > > Ron AC7AC > > -Original Message- > Phil, > Your statement amplifies the difference between "ham assumptions" and > reality. > The data-sheet indications of gain do not consider the input impedance > (and loading of the driver), that parameter is quite important in actual > use -- if the amplifier does not provide a good load to the driving > transmitter, then "all bets are off". > 73, > Don W3FPR > > On 12/20/2010 8:28 PM, Phil & Debbie Salas wrote: > "It's very unlikely any solid-state amplifier uses an input attenuator: > Transistors and FET's just don't have that much gain." > > The Ameritron ALS-600 has about a 15 ohm input impedance. Then they put a > series 35 ohm resistor for matching and reducing gain. > Phil - AD5X -- ** CSL DualCom Limited Registered Office: Salamander Quay West, Park Lane, Harefield, Middlesex UB9 6NZ Registered in England No. 3155883 This e-mail is only intended for the person(s) to whom it is addressed and may contain confidential information. Unless stated to the contrary, any opinions or comments are personal to the writer and do not represent the official view of the company. If you have received this e-mail in error, please notify us immediately by reply e-mail and then delete this message from your system. Please do not copy it or use it for any purposes, or disclose its contents to any other person. Thank you for your co-operation. ** __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 RFI Susceptibility
On 12/22/2010 8:15 AM, Bill Davis Jr wrote: > I have had similar issues with my K3/10, but I was asking for trouble. I > have an involved external sequence switcher and band decoder for all the > VHF/UHF/Microwave transverters. Involved is an unshielded wire that runs > between my sequencer switcher and the PTT circuit, accessed at a mike cable > extension on the K3. The TX function for the K3 is operated by the sequencer. > On 6m when running the 250w, the amp RF gets into the keying circuit. With a > bit of lead dressing I have been able to avoid the problem, but I need to do > something a bit more "evolved" for the problem. YES! Here's the problem -- while that PTT line IS a DC line, because it is a WIRE, it is also an ANTENNA, so it will carry RF current from your TX and put it into the K3 PTT circuit (and into whatever is driving the PTT circuit). That means we CANNOT treat it as a DC circuit. It is an RF circuit, and must be wired with coax (or something like coax), with the shield bonded to the chassis at each end. Now, the RF current flows on the coax shield to the chassis at each end, so it does not cause problems with the keying circuit. 73, Jim K9YC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K2 FOR SALE
FOR SALE, I have two K2s and would like to sell one, so I can continue to put together number 2. Serial Number 3213 In good working condition. It has the following upgrades: K2/100 100 Watt Stage and RS-232 I/O, KNB2 Noise Blanker, KAF2 Audio Filter and Real Time Clock, KSB2 SSB Adapter, K160RX 160 Meter Module, The latest K2 Revision Firmware. I have all the manuals. A great 12v radio that is fun to use and repair with Elecraft's great service. $875. Plus packaging and shipping. It will be double boxed. Radio will be sent to Elecraft for complete alignment to make sure it is in top condition. Price after this is $950.Plus shipping. Tomy 928-636-7782 in Arizona 73! Tomy Ivan kf7gc __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] 100 Watts or 500 Watts
Just some simple questions. Why use an 813 for an amp. 125 watt plate dissipation, 50 watts of heater power, and a large physical size. The "modern" 572b uses 25 watts for heater power has 225 watts dissipation and is cheap. I have two SB200s they put out 800 watts PEP and they can be bought real inexpensive. Every couple of years I stick new tubes in them for kicks and use the pulls as spares or "presents". I love building, but I am practical too. But have fun guys and please be careful. George, W6GF From: Ron D'Eau Claire To: Sent: Wed, December 22, 2010 9:20:47 AM Subject: Re: [Elecraft] 100 Watts or 500 Watts Time to dig out some old ARRL Handbooks from the 60's. My '62 Handbook has a nice 813 grid driven amp that runs Class C for CW and AB2 for SSB, the famous "one band kilowatt" amplifiers using a pair of 813's (each band had its own RF 'deck' with a common power and metering circuit so each amp could be pre-tuned and ready to go at the snap of a relay or switch) and a Kilowatt grid-driven 4-400A amp, in addition to the usual assortment of ground grid amps. A builder today may need to 'beef up' the pi-network output filter to meet modern spurious emission standards (typically for the second harmonic) or use an outboard half-wave filter for each band for that purpose. Ron (radios should glow in the dark) AC7AC -Original Message- On 12/22/2010 11:30 AM, a lister wrote: Grounded-grid is not the only way to design a tube amplifier. Although a traditional grid-driven circuit is a little more complicated, it's one way to get more gain. Amen to that. When I was little, "grounded grid" was vaunted as the way to use triodes without needing neutralization, even though one took a real hit on gain. Unfortunately, the old-time big amps that use/used several triodes in parallel in grounded grid still have a tendency to "take off." The 813 and the various Eimac ceramic tetrodes are wonderful tubes, and if one can go high voltage low current, they are excellent performers. Again, when I was young, solid state devices wouldn't function in the VHF/UHF region, and the 4CXnnn series were practically a necessity. Need I refer to the beautiful amps vended by one of the early moonbounce guys? I for one would like to see designs using these tubes. Not all of us need linear/linearized amps. John Ragle -- W1ZI __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] OT: found one: 5 in 100 out
Yes, but cannot be legally imported into the US. Whether one of us can sneak it in or not, or should, is another question altogether. I think you will find these on citizens band in the US. 73, Guy. On Wed, Dec 22, 2010 at 8:50 AM, DOUGLAS ZWIEBEL wrote: > http://www.thp.co.jp/english/hl_100bdx_e.html > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Weighted Tuning Knobs - Any Consequence?
cstoverva wrote: > > For everyone info, the stock K3 B vfo knob makes a great VFO knob for the > K1. > For everyone's info, the stock K3 A vfo knob makes a great K3 B vfo knob as well. It DOES fit and many of us have matching vfo knobs on our K3's. 73, Barry N1EU -- View this message in context: http://elecraft.365791.n2.nabble.com/Weighted-Tuning-Knobs-Any-Consequence-tp5859771p5859963.html Sent from the [K3] mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] 100 Watts or 500 Watts
My approach to the harmonic problem is to use a link-coupled antenna tuner on 80-30 meters (Johnson Matchbox), and a homebrew parallel tuned circuit on 160. On the higher bands, the simple pi network should be adequate to keep the harmonics down. You could use a pi-L configuration on the low bands if you wish. A bigger problem with class-C is how to keep the high bias from sharpening up the beautiful K3 keying and producing clicks. My approach is to have the QSK circuit drop the bias below cutoff when the amplifier is keyed, so that the amplifier is initially operating in the linear part of the curve. There is a resistor in the grid circuit which supplies the remainder of the class-C bias from rectified grid current. But that bias rises along with the drive. The bypass capacitor and this resistor form a filter which keeps the transition to full power clean. On 12/22/2010 9:20 AM, Ron D'Eau Claire wrote: > Time to dig out some old ARRL Handbooks from the 60's. My '62 Handbook has a > nice 813 grid driven amp that runs Class C for CW and AB2 for SSB, the > famous "one band kilowatt" amplifiers using a pair of 813's (each band had > its own RF 'deck' with a common power and metering circuit so each amp could > be pre-tuned and ready to go at the snap of a relay or switch) and a > Kilowatt grid-driven 4-400A amp, in addition to the usual assortment of > ground grid amps. > > A builder today may need to 'beef up' the pi-network output filter to meet > modern spurious emission standards (typically for the second harmonic) or > use an outboard half-wave filter for each band for that purpose. > > Ron (radios should glow in the dark) AC7AC > > -Original Message- > On 12/22/2010 11:30 AM, a lister wrote: > > Grounded-grid is not the only way to design a tube amplifier. Although a > traditional grid-driven circuit is a little more complicated, it's one way > to get more gain. > > Amen to that. When I was little, "grounded grid" was vaunted as the way to > use triodes without needing neutralization, even though one took a real hit > on gain. Unfortunately, the old-time big amps that use/used several triodes > in parallel in grounded grid still have a tendency to "take off." > > The 813 and the various Eimac ceramic tetrodes are wonderful tubes, and if > one can go high voltage low current, they are excellent performers. Again, > when I was young, solid state devices wouldn't function in the VHF/UHF > region, and the 4CXnnn series were practically a necessity. Need I refer to > the beautiful amps vended by one of the early moonbounce guys? > > I for one would like to see designs using these tubes. Not all of us need > linear/linearized amps. > > John Ragle -- W1ZI -- Vic, K2VCO Fresno CA http://www.qsl.net/k2vco/ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] 100 Watts or 500 Watts
On Wed, Dec 22, 2010 at 10:45 AM, John Ragle wrote: > On 12/22/2010 11:30 AM, a lister wrote: > > ...When I was little, "grounded grid" was vaunted as the way to use triodes > without needing neutralization... Yep. Remember the bifilar filament chokes? You could go to the ham store, get one of those, a cool litz-wound plate choke, and a bandswitching tank coil, and the variables you needed for a pi-network output, and build a heck of an amp. Another way was the NCL-2000 way, wherein the input circuit was just a 50 ohm resistor and the amp ran in class AB1, using 8122 ceramic tubes. IIRC, about 50 watts of drive was enough. An amp designed that way could use a higher value resistor, show the transceiver a mismatch, and get by with less drive. If you used a 200 ohm resistor and a 4:1 balun, you could probably drive such an amp to the max with 10-15 watts, no step-up stage required. Tony KT0NY __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] 100 Watts or 500 Watts
Time to dig out some old ARRL Handbooks from the 60's. My '62 Handbook has a nice 813 grid driven amp that runs Class C for CW and AB2 for SSB, the famous "one band kilowatt" amplifiers using a pair of 813's (each band had its own RF 'deck' with a common power and metering circuit so each amp could be pre-tuned and ready to go at the snap of a relay or switch) and a Kilowatt grid-driven 4-400A amp, in addition to the usual assortment of ground grid amps. A builder today may need to 'beef up' the pi-network output filter to meet modern spurious emission standards (typically for the second harmonic) or use an outboard half-wave filter for each band for that purpose. Ron (radios should glow in the dark) AC7AC -Original Message- On 12/22/2010 11:30 AM, a lister wrote: Grounded-grid is not the only way to design a tube amplifier. Although a traditional grid-driven circuit is a little more complicated, it's one way to get more gain. Amen to that. When I was little, "grounded grid" was vaunted as the way to use triodes without needing neutralization, even though one took a real hit on gain. Unfortunately, the old-time big amps that use/used several triodes in parallel in grounded grid still have a tendency to "take off." The 813 and the various Eimac ceramic tetrodes are wonderful tubes, and if one can go high voltage low current, they are excellent performers. Again, when I was young, solid state devices wouldn't function in the VHF/UHF region, and the 4CXnnn series were practically a necessity. Need I refer to the beautiful amps vended by one of the early moonbounce guys? I for one would like to see designs using these tubes. Not all of us need linear/linearized amps. John Ragle -- W1ZI __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] muting audio on PSK
1) Are you sure it's coming out of the K3 and not the sound card? 2) Does transmitter power affect it? Wes N7WS --- On Wed, 12/22/10, Paul Milward wrote: > From: Paul Milward > Subject: Re: [Elecraft] muting audio on PSK > To: "elecraft reflector" > Date: Wednesday, December 22, 2010, 9:50 AM > Nope > MON=0 > the mystery continues > nu4c > > > > > > Could this be the Monitor Gain? > > Try pressing the bottom right knob to the left of the VFO > for about a half > second (HOLD time), the VFO B area should say "MON xx" > where xx is a number, > and rotate the knob to a lower setting. This knob is also > used for > compression, transmit power, etc. > > 73 de Dick, K6KR > > > -Original Message- > > Hi folks > I need a little help. I am using the K3 on PSK a lot. I > turn the audio gain > to > zero and that mutes received audio. However, I cannot find > a way to mute the > > transmit audio (annoying whine). I have rear and reread the > manual and > cannot > find any help. > Does anyone know how to mute transmit audio on PSK? > tu > Paul, NU4C __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] muting audio on PSK
Are you sure the TX audio isn't coming out of your PC speakers? James K2QI Sent via BlackBerry from T-Mobile -Original Message- From: Paul Milward Sender: elecraft-boun...@mailman.qth.net Date: Wed, 22 Dec 2010 08:50:38 To: elecraft reflector Subject: Re: [Elecraft] muting audio on PSK Nope MON=0 the mystery continues nu4c From: Dick Dievendorff To: Paul Milward ; elecraft reflector Sent: Wed, December 22, 2010 11:06:18 AM Subject: RE: [Elecraft] muting audio on PSK Could this be the Monitor Gain? Try pressing the bottom right knob to the left of the VFO for about a half second (HOLD time), the VFO B area should say "MON xx" where xx is a number, and rotate the knob to a lower setting. This knob is also used for compression, transmit power, etc. 73 de Dick, K6KR -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Paul Milward Sent: Wednesday, December 22, 2010 8:01 AM To: elecraft reflector Subject: [Elecraft] muting audio on PSK Hi folks I need a little help. I am using the K3 on PSK a lot. I turn the audio gain to zero and that mutes received audio. However, I cannot find a way to mute the transmit audio (annoying whine). I have rear and reread the manual and cannot find any help. Does anyone know how to mute transmit audio on PSK? tu Paul, NU4C __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] muting audio on PSK
My XYL does not like the beadle-beadle of the BPSK, so I stick a blank (no wiring, no shorting) stereo plug into the front "PHONES" jack. That opens the circuit and makes everyone happy. John Ragle -- W1ZI = On 12/22/2010 11:50 AM, Paul Milward wrote: I need a little help. I am using the K3 on PSK a lot. I turn the audio gain tozero and that mutes received audio. However, I cannot find a way to mute the transmit audio (annoying whine). I have rear and reread the manual and cannot find any help. Does anyone know how to mute transmit audio on PSK? __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Weighted Tuning Knobs - Any Consequence?
Hey John, I put them on my K3 and K2s about a year ago. No problems that I can tell. Nice and smooth. For everyone info, the stock K3 B vfo knob makes a great VFO knob for the K1. Chuck K4QS -Original Message- From: John Huggins, kx4o To: Elecraft Sent: Wed, Dec 22, 2010 11:50 am Subject: [Elecraft] Weighted Tuning Knobs - Any Consequence? All, Does anyone know of any issues the extra weight of the "weighted spinner knobs" such as these... http://www.73cnc.com/73cnc/elecraft.html ...might cause the bearing points of the tuning shaft in the K2 or K3? Thanks. John __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Weighted Tuning Knobs - Any Consequence?
Yes, you'll be about $100 poorer and have made absolutely no improvement to the performance or capabilities of your transceiver. 73, Ken Alexander VE3HLS --- On Wed, 12/22/10, John Huggins, kx4o wrote: > From: John Huggins, kx4o > Subject: [Elecraft] Weighted Tuning Knobs - Any Consequence? > To: Elecraft@mailman.qth.net > Date: Wednesday, December 22, 2010, 11:50 AM > All, > > Does anyone know of any issues the extra weight of the > "weighted spinner > knobs" such as these... > > http://www.73cnc.com/73cnc/elecraft.html > > ...might cause the bearing points of the tuning shaft in > the K2 or K3? > > Thanks. > > John > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] muting audio on PSK
Nope MON=0 the mystery continues nu4c From: Dick Dievendorff To: Paul Milward ; elecraft reflector Sent: Wed, December 22, 2010 11:06:18 AM Subject: RE: [Elecraft] muting audio on PSK Could this be the Monitor Gain? Try pressing the bottom right knob to the left of the VFO for about a half second (HOLD time), the VFO B area should say "MON xx" where xx is a number, and rotate the knob to a lower setting. This knob is also used for compression, transmit power, etc. 73 de Dick, K6KR -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Paul Milward Sent: Wednesday, December 22, 2010 8:01 AM To: elecraft reflector Subject: [Elecraft] muting audio on PSK Hi folks I need a little help. I am using the K3 on PSK a lot. I turn the audio gain to zero and that mutes received audio. However, I cannot find a way to mute the transmit audio (annoying whine). I have rear and reread the manual and cannot find any help. Does anyone know how to mute transmit audio on PSK? tu Paul, NU4C __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] Weighted Tuning Knobs - Any Consequence?
All, Does anyone know of any issues the extra weight of the "weighted spinner knobs" such as these... http://www.73cnc.com/73cnc/elecraft.html ...might cause the bearing points of the tuning shaft in the K2 or K3? Thanks. John __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] OT: 10 watts in, 400 watts out amp
Yea and most of them are garbage!! Sam Strongin kf4yox -Original Message- From: Bob Naumann Sent: Wednesday, December 22, 2010 9:22 AM To: 'Elecraft Reflector' Subject: Re: [Elecraft] OT: 10 watts in, 400 watts out amp Doug, The THP HL-100BDX and the HL-700B amplifiers are NOT available for sale in the United States from Tokyo Hy-Power Dealers. If you look here: http://www.thp.co.jp/english/index_ham_e.html Those that are available for sale in the U.S. are clearly indicated with (FCC Approved) next to the model numbers. The THP HL-450B is available in the U.S. though, and it provides up to 400w output with 100w input. The smaller HL-45B provides about 45 to 50w output with 5w +/- drive. There are all sorts of amplifiers from around the world that are not available for legal sale in the U.S. due to lack of FCC approval. That said, a lot of them are available here in the U.S. through CB radio shops that don't seem to follow the law. 73, Bob W5OV -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of DOUGLAS ZWIEBEL Sent: Wednesday, December 22, 2010 7:43 AM To: Elecraft Reflector Subject: [Elecraft] OT: 10 watts in, 400 watts out amp Someone said they weren't aware of any amps that do 5 in 100 out. How about 10 in and 400 out? No, not FCC type accepted, but it's available. I'm sure there are others. http://www.thp.co.jp/english/hl_700b_e.html de Doug KR2Q __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] 100 Watts or 500 Watts
For linear purposes, 813's work in grounded grid with the screen tied to the control grid and grounded. You can also make a class AB1 amplifier with a 'grid circuit' consisting of a big 50-ohm dummy load. And then there is the G2DAF circuit, in which the screen voltage is derived fom the drive -- but I only recommend this one for SSB if you have a means for checking IMD; it may require some careful adjustment. I'll put up the report on my amp soon. I need to redraw the schematics which are a horrible mess at present. On 12/22/2010 8:30 AM, Dale Parfitt wrote: > Hi Vic, > Dave Ishmael has a single 813 amplifeir in this month's Electric Radio. > Please do publish > your amp for all of us to look at. I still have an 813 and socket I have had > since I was a > kid- maybe it's time to build an amp for my Atlas 350XL. > > Dale W4OP > - Original Message - From: "Vic K2VCO" > To: > Sent: Wednesday, December 22, 2010 11:14 AM > Subject: Re: [Elecraft] 100 Watts or 500 Watts > > >> I just finished building a grid-driven amplifier using two 813 tubes. With a >> 3 db >> attenuator at the input, it requires between 16 and 40 watts of drive on 160 >> through 10 >> meters respectively, for 800 watts output (only 700 on 10). Without the >> attenuator, it >> would need 8 - 20 watts drive. >> >> And this is a class-C amplifier designed for CW only! If it were a class B >> or AB linear, >> the drive requirement would be even lower. >> >> Grounded-grid is not the only way to design a tube amplifier. Although a >> traditional >> grid-driven circuit is a little more complicated, it's one way to get more >> gain. >> >> I am going to put some pictures and schematics on my web site soon, not that >> I think >> anyone will want to duplicate it! >> >> On 12/22/2010 7:50 AM, Ron D'Eau Claire wrote: >>> Even the Elecraft 100 watt amps are integrated with either the K2 or K3 >>> control logic so they cannot be used as a stand-alone amplifier with other >>> transmitters. >>> >>> The only reason I have ever seen from the FCC for the amplifier >>> certification and 15 dB gain limitation is to discourage the CB >>> 'bootleggers'. Certainly building a stable, clean amplifier that would take >>> even a few milliwatts to 1000+ watts is a straightforward design exercise. >>> There's no real problem with using more than one stage of gain if there was >>> no 15 dB limit on the system gain. >>> >>> Ron AC7AC >> >> -- >> Vic, K2VCO >> Fresno CA >> http://www.qsl.net/k2vco/ >> __ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html > > > > > > > No virus found in this incoming message. > Checked by AVG - www.avg.com > Version: 9.0.872 / Virus Database: 271.1.1/3331 - Release Date: 12/22/10 > 02:34:00 > -- Vic __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] 100 Watts or 500 Watts
On 12/22/2010 11:30 AM, a lister wrote: Grounded-grid is not the only way to design a tube amplifier. Although a traditional grid-driven circuit is a little more complicated, it's one way to get more gain. Amen to that. When I was little, "grounded grid" was vaunted as the way to use triodes without needing neutralization, even though one took a real hit on gain. Unfortunately, the old-time big amps that use/used several triodes in parallel in grounded grid still have a tendency to "take off." The 813 and the various Eimac ceramic tetrodes are wonderful tubes, and if one can go high voltage low current, they are excellent performers. Again, when I was young, solid state devices wouldn't function in the VHF/UHF region, and the 4CXnnn series were practically a necessity. Need I refer to the beautiful amps vended by one of the early moonbounce guys? I for one would like to see designs using these tubes. Not all of us need linear/linearized amps. John Ragle -- W1ZI __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] 100 Watts or 500 Watts
Hi Vic, Dave Ishmael has a single 813 amplifeir in this month's Electric Radio. Please do publish your amp for all of us to look at. I still have an 813 and socket I have had since I was a kid- maybe it's time to build an amp for my Atlas 350XL. Dale W4OP - Original Message - From: "Vic K2VCO" To: Sent: Wednesday, December 22, 2010 11:14 AM Subject: Re: [Elecraft] 100 Watts or 500 Watts >I just finished building a grid-driven amplifier using two 813 tubes. With >a 3 db > attenuator at the input, it requires between 16 and 40 watts of drive on > 160 through 10 > meters respectively, for 800 watts output (only 700 on 10). Without the > attenuator, it > would need 8 - 20 watts drive. > > And this is a class-C amplifier designed for CW only! If it were a class B > or AB linear, > the drive requirement would be even lower. > > Grounded-grid is not the only way to design a tube amplifier. Although a > traditional > grid-driven circuit is a little more complicated, it's one way to get more > gain. > > I am going to put some pictures and schematics on my web site soon, not > that I think > anyone will want to duplicate it! > > On 12/22/2010 7:50 AM, Ron D'Eau Claire wrote: >> Even the Elecraft 100 watt amps are integrated with either the K2 or K3 >> control logic so they cannot be used as a stand-alone amplifier with >> other >> transmitters. >> >> The only reason I have ever seen from the FCC for the amplifier >> certification and 15 dB gain limitation is to discourage the CB >> 'bootleggers'. Certainly building a stable, clean amplifier that would >> take >> even a few milliwatts to 1000+ watts is a straightforward design >> exercise. >> There's no real problem with using more than one stage of gain if there >> was >> no 15 dB limit on the system gain. >> >> Ron AC7AC > > -- > Vic, K2VCO > Fresno CA > http://www.qsl.net/k2vco/ > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.872 / Virus Database: 271.1.1/3331 - Release Date: 12/22/10 02:34:00 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 RFI Susceptibility
I have to shield all my control cables, etc. In fact, I think the only unshielded ones connected to the K3 are the power cable and headphones. I'm not worried about the power cable, as it's very well grounded and bypassed, as it should be. 73, Scott K9MA On Dec 22, 2010, at 10:15 AM, Bill Davis Jr wrote: > > From: cqbi...@msn.com > To: sdell...@facstaff.wisc.edu > Subject: RE: [Elecraft] K3 RFI Susceptibility > Date: Wed, 22 Dec 2010 10:13:49 -0600 > > > I have had similar issues with my K3/10, but I was asking for trouble. I > have an involved external sequence switcher and band decoder for all the > VHF/UHF/Microwave transverters. Involved is an unshielded wire that runs > between my sequencer switcher and the PTT circuit, accessed at a mike cable > extension on the K3. The TX function for the K3 is operated by the sequencer. > On 6m when running the 250w, the amp RF gets into the keying circuit. With a > bit of lead dressing I have been able to avoid the problem, but I need to do > something a bit more "evolved" for the problem. > > 73 Bill K0AWU (EN37ed Minnesota) > > -- > >> Date: Wed, 22 Dec 2010 09:33:51 -0600 >> From: sdell...@facstaff.wisc.edu >> To: elecraft@mailman.qth.net >> Subject: [Elecraft] K3 RFI Susceptibility >> >> While using my shunt-fed tower and amplifier on 80 and 160 CW, the K3 keying >> became erratic. The problem went away when I unplugged the spare headset >> from the rear panel jacks. The front panel jacks aren't a problem, no >> doubt because their shields go right to the chassis. If you use the rear >> panel ones at high power, it would be wise to wrap the cord around a ferrite >> core. I didn't have any trouble with the other rear panel cables, but I put >> cores on them anyway. >> >> My shack is a high-RF environment on those bands, as it's only about 10 >> meters from the tower, but it's probably not the worst the K3 is likely to >> see. (Field Day, expeditions?) I've had to take measures to keep RF out of >> other equipment, though not the 60 pound behemoth next to the K3. >> >> I haven't looked into it, but maybe there's an easy way to ground those rear >> panel jacks more directly to the chassis. (This is a classic cause of RF >> susceptibility.) If not, a few ferrite cores is a small investment. > >> 73, >> >> Scott > >> Scott Ellington >> Madison, Wisconsin >> USA > > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html Scott Ellington Madison, Wisconsin USA __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 RFI Susceptibility
From: cqbi...@msn.com To: sdell...@facstaff.wisc.edu Subject: RE: [Elecraft] K3 RFI Susceptibility Date: Wed, 22 Dec 2010 10:13:49 -0600 I have had similar issues with my K3/10, but I was asking for trouble. I have an involved external sequence switcher and band decoder for all the VHF/UHF/Microwave transverters. Involved is an unshielded wire that runs between my sequencer switcher and the PTT circuit, accessed at a mike cable extension on the K3. The TX function for the K3 is operated by the sequencer. On 6m when running the 250w, the amp RF gets into the keying circuit. With a bit of lead dressing I have been able to avoid the problem, but I need to do something a bit more "evolved" for the problem. 73 Bill K0AWU (EN37ed Minnesota) -- > Date: Wed, 22 Dec 2010 09:33:51 -0600 > From: sdell...@facstaff.wisc.edu > To: elecraft@mailman.qth.net > Subject: [Elecraft] K3 RFI Susceptibility > > While using my shunt-fed tower and amplifier on 80 and 160 CW, the K3 keying > became erratic. The problem went away when I unplugged the spare headset > from the rear panel jacks. The front panel jacks aren't a problem, no doubt > because their shields go right to the chassis. If you use the rear panel > ones at high power, it would be wise to wrap the cord around a ferrite core. > I didn't have any trouble with the other rear panel cables, but I put cores > on them anyway. > > My shack is a high-RF environment on those bands, as it's only about 10 > meters from the tower, but it's probably not the worst the K3 is likely to > see. (Field Day, expeditions?) I've had to take measures to keep RF out of > other equipment, though not the 60 pound behemoth next to the K3. > > I haven't looked into it, but maybe there's an easy way to ground those rear > panel jacks more directly to the chassis. (This is a classic cause of RF > susceptibility.) If not, a few ferrite cores is a small investment. > 73, > > Scott > Scott Ellington > Madison, Wisconsin > USA __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] 100 Watts or 500 Watts
I just finished building a grid-driven amplifier using two 813 tubes. With a 3 db attenuator at the input, it requires between 16 and 40 watts of drive on 160 through 10 meters respectively, for 800 watts output (only 700 on 10). Without the attenuator, it would need 8 - 20 watts drive. And this is a class-C amplifier designed for CW only! If it were a class B or AB linear, the drive requirement would be even lower. Grounded-grid is not the only way to design a tube amplifier. Although a traditional grid-driven circuit is a little more complicated, it's one way to get more gain. I am going to put some pictures and schematics on my web site soon, not that I think anyone will want to duplicate it! On 12/22/2010 7:50 AM, Ron D'Eau Claire wrote: > Even the Elecraft 100 watt amps are integrated with either the K2 or K3 > control logic so they cannot be used as a stand-alone amplifier with other > transmitters. > > The only reason I have ever seen from the FCC for the amplifier > certification and 15 dB gain limitation is to discourage the CB > 'bootleggers'. Certainly building a stable, clean amplifier that would take > even a few milliwatts to 1000+ watts is a straightforward design exercise. > There's no real problem with using more than one stage of gain if there was > no 15 dB limit on the system gain. > > Ron AC7AC -- Vic, K2VCO Fresno CA http://www.qsl.net/k2vco/ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] muting audio on PSK
Could this be the Monitor Gain? Try pressing the bottom right knob to the left of the VFO for about a half second (HOLD time), the VFO B area should say "MON xx" where xx is a number, and rotate the knob to a lower setting. This knob is also used for compression, transmit power, etc. 73 de Dick, K6KR -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Paul Milward Sent: Wednesday, December 22, 2010 8:01 AM To: elecraft reflector Subject: [Elecraft] muting audio on PSK Hi folks I need a little help. I am using the K3 on PSK a lot. I turn the audio gain to zero and that mutes received audio. However, I cannot find a way to mute the transmit audio (annoying whine). I have rear and reread the manual and cannot find any help. Does anyone know how to mute transmit audio on PSK? tu Paul, NU4C __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] muting audio on PSK
Hi folks I need a little help. I am using the K3 on PSK a lot. I turn the audio gain to zero and that mutes received audio. However, I cannot find a way to mute the transmit audio (annoying whine). I have rear and reread the manual and cannot find any help. Does anyone know how to mute transmit audio on PSK? tu Paul, NU4C __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 external speakers
>From memory, (ie the regs changed I should check first) over here in Eu we have working place regulation set at 85dBA as a maximum for continuous 8 hours listening environment, but it is advised (not mandatory till another 3dB) to use some kind of ear protection; then 88dBA for 4 hours, 91dBA for 2 hours, etc and there is a maximum somewhere around 90s duration. I think *most* folk would find 85dBA very tiresome over 8 hours. I think what I'm saying is that the K3 output is more than adequate and if it isn't for someone, then headphones would be better so as not to waken the family / neighbourhood. 73 and season's greetings David G3UNA > > The loudspeaker output stages in the K3 are sufficient to drive an > external passive (unamplified) loudspeaker of reasonable efficiency to a > more than enough level for those who aren't seriously hearing impaired. > A number to look for in loudspeaker specs is 85dBSPL or more for 1 > watt at one meter into 8 ohms. Most of us would set a loudspeaker > within 20 inches or so, which increases the level by 6dB, and, as I > recall, the K3 has a 1 watt output stage. That puts a peak loudness of > 91 dB in our ear for CW, and about 10dB less for SSB. > > 73, Jim Brown K9YC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] 100 Watts or 500 Watts
Even the Elecraft 100 watt amps are integrated with either the K2 or K3 control logic so they cannot be used as a stand-alone amplifier with other transmitters. The only reason I have ever seen from the FCC for the amplifier certification and 15 dB gain limitation is to discourage the CB 'bootleggers'. Certainly building a stable, clean amplifier that would take even a few milliwatts to 1000+ watts is a straightforward design exercise. There's no real problem with using more than one stage of gain if there was no 15 dB limit on the system gain. Ron AC7AC -Original Message- Igor, I think, at least in part, the regulation is intended to make amateur amplifiers less attractive to users of the Citizen's Radio Service. Rather than being able to go from 5W to 1000+W with a single, relatively inexpensive amp, an amp to get from 5W to ~100W is needed in order to drive the KW amp.. And except for Elecraft, I'm not aware of any other 5->100W amplifiers. 73, Dave KQ3T __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K3 RFI Susceptibility
While using my shunt-fed tower and amplifier on 80 and 160 CW, the K3 keying became erratic. The problem went away when I unplugged the spare headset from the rear panel jacks. The front panel jacks aren't a problem, no doubt because their shields go right to the chassis. If you use the rear panel ones at high power, it would be wise to wrap the cord around a ferrite core. I didn't have any trouble with the other rear panel cables, but I put cores on them anyway. My shack is a high-RF environment on those bands, as it's only about 10 meters from the tower, but it's probably not the worst the K3 is likely to see. (Field Day, expeditions?) I've had to take measures to keep RF out of other equipment, though not the 60 pound behemoth next to the K3. I haven't looked into it, but maybe there's an easy way to ground those rear panel jacks more directly to the chassis. (This is a classic cause of RF susceptibility.) If not, a few ferrite cores is a small investment. 73, Scott Scott Ellington Madison, Wisconsin USA __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] OT: 10 watts in, 400 watts out amp
Doug, The THP HL-100BDX and the HL-700B amplifiers are NOT available for sale in the United States from Tokyo Hy-Power Dealers. If you look here: http://www.thp.co.jp/english/index_ham_e.html Those that are available for sale in the U.S. are clearly indicated with (FCC Approved) next to the model numbers. The THP HL-450B is available in the U.S. though, and it provides up to 400w output with 100w input. The smaller HL-45B provides about 45 to 50w output with 5w +/- drive. There are all sorts of amplifiers from around the world that are not available for legal sale in the U.S. due to lack of FCC approval. That said, a lot of them are available here in the U.S. through CB radio shops that don't seem to follow the law. 73, Bob W5OV -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of DOUGLAS ZWIEBEL Sent: Wednesday, December 22, 2010 7:43 AM To: Elecraft Reflector Subject: [Elecraft] OT: 10 watts in, 400 watts out amp Someone said they weren't aware of any amps that do 5 in 100 out. How about 10 in and 400 out? No, not FCC type accepted, but it's available. I'm sure there are others. http://www.thp.co.jp/english/hl_700b_e.html de Doug KR2Q __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K3 TS590 Eagle Compared
Here is a photo of all 3 rigs from a post on the Eagle reflector. http://n4lq.webs.com/apps/photos/photo?photoid=110659922 WxHxD inches K3 11.1 x 4.4 x 11.8 9.4lbs TS-590 10.63 x 3.78 x 11.46 16.31lbs Eagle 8.5 x 2.9 x 10.25 7.25lbs Steve N4LQ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] OT: found one: 5 in 100 out
http://www.thp.co.jp/english/hl_100bdx_e.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] OT: 10 watts in, 400 watts out amp
Someone said they weren't aware of any amps that do 5 in 100 out. How about 10 in and 400 out? No, not FCC type accepted, but it's available. I'm sure there are others. http://www.thp.co.jp/english/hl_700b_e.html de Doug KR2Q __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] N2CQ QRP Contest Calendar: Dec 23 - Jan 24
~ N2CQ QRP CONTEST CALENDAR December 23, 2010 to January 24, 2011 ~ 40 METER FOXHUNT (CW) *** QRP Contest *** EST: Dec 23, 9 PM to 10:29 PM UTC: Dec 24, 0200z to 0329z Info: http://www.qrpfoxhunt.org/ ~ R A E M Contest (CW) .. Low Power category Dec 26, z to 1159z Rules: http://www.srr.ru/CONTEST/cup_raem_engl_10.php ~ 80 METER FOXHUNT (CW) *** QRP Contest *** EST: Dec 28, 9 PM to 10:29 PM UTC: Dec 29, 0200z to 0329z Info: http://www.qrpfoxhunt.org/ ~ NACC Straight Key/Bug Sprint (CW mw Special) ***QRPp Contest*** Dec 30, 0130z to 0330z Rules: http://home.windstream.net/yoel/contests.html ~ 40 METER FOXHUNT (CW) *** QRP Contest *** EST: Dec 30, 9 PM to 10:29 PM UTC: Dec 31, 0200z to 0329z Info: http://www.qrpfoxhunt.org/ ~ Straight Key Night (CW) UTC: Jan 1, z to 2400z Info: http://www.arrl.org/straight-key-night ~ AGB "New Year SnowBall" Contest (80M CW/SSB) ...QRP Category Jan 1, z to 0100z Rules: http://www.ev5agb.com/contest/agb_nysb.htm ~ AGCW Happy New Year Contest (CW)...QRP Category Jan 1, 0900z to 1200z Rules: http://www.agcw.org/en/?Contests:Happy_New_Year_Contest ~ AGCW VHF/UHF CW Contest ... QRP Category Jan 1, 1400z to 1659z (144 Mhz) Jan 1, 1700z to 1759z (432 Mhz) Rules: http://www.agcw.org/en/?Contests:VHF-UHF_Contest ~ Original QRP Contest ... QRP Category Jan 1, 1500z to Jan 2, 1500z Rules: http://www.qrpcc.de/contestrules/oqrpr.html ~ QRPARCI Pet Rock Celebration (CW) *** QRP Contest *** Jan 1, 1500z to 1800z (Bonus points for rockbound equipment) Rules: http://www.qrparci.org/ ~ UBA Foxhunt (CW/PSK31/SSB) *** QRP Contest *** Jan 3, 1930z to 2030z Rules: http://www.on5ex.be/foxhunt/foxhunt.html ~ Adventure Radio Spartan Sprint (CW) ... QRP Contest! EST: Jan 3, 9 PM to 11 PM (First Monday each month) UTC: Jan 4, 0200z to 0400z Info: http://www.arsqrp.blogspot.com/ ~ 80 METER FOXHUNT (CW) *** QRP Contest *** EST: Jan 4, 9 PM to 10:29 PM UTC: Jan 5, 0200z to 0329z Info: http://www.qrpfoxhunt.org/ ~ 40 METER FOXHUNT (CW) *** QRP Contest *** EST: Jan 6, 9 PM to 10:29 PM UTC: Jan 7, 0200z to 0329z Info: http://www.qrpfoxhunt.org/ ~ 070 Club PSKFEST Contest ... QRP Category Jan 8, z to 2400z Rules: http://www.podxs070.com//contests/pskfest_rules.htm ~ Michigan QRP Club Contest (CW) ... QRP Contest! Jan 8, 1200z to Jan 9, 2359z Rules: http://www.qsl.net/miqrpclub/contest.html ~ Worldwide Peace Messenger Cities (CW/SSB)... QRP Category Jan 8, 1200z to Jan 9, 1200z Rules: http://www.s59dcd.si/english/ ~ North American QSO Party (CW) (100w max. QRP Entries Noted) Jan 8, 1800z to Jan 9, 0600z Rules: http://www.ncjweb.com/naqprules.php ~ ARRL RTTY Roundup ... <= 150W Category Jan 8, 1800z to Jan 9, 2400z Rules: http://www.arrl.org/rtty-roundup ~ EUCW 160 Meter Contest (CW) ... QRP Category Jan 8, 2000z to 2300z and Jan 9, 0400z to 0700z Rules: http://www.agcw.org/eucw/eu160.html ~ SKCC Weekend Sprintathon (Straight Key CW) ... QRP Category Jan 9, z to 2359z Rules: http://www.skccgroup.com/sprint/wes/ ~ DARC 10-Meter Contest (CW/SSB)... <=100 W category Jan 9, 0900Z to 1059Z Rules: http://www.darc.de/referate/dx/contest/10m/en/rules/ ~ VERON Midwinter QSO Party (CW/SSB) ... QRP Category Jan 9, 1000z to 1400z Rules: http://trafficbureau.veron.nl/contest/contest_mw_eng.htm ~ UBA Foxhunt (CW/PSK31/SSB) *** QRP Contest *** Jan 10, 1930z to 2030z Rules: http://www.on5ex.be/foxhunt/foxhunt.html ~~
Re: [Elecraft] 100 Watts or 500 Watts
Igor, I think, at least in part, the regulation is intended to make amateur amplifiers less attractive to users of the Citizen's Radio Service. Rather than being able to go from 5W to 1000+W with a single, relatively inexpensive amp, an amp to get from 5W to ~100W is needed in order to drive the KW amp.. And except for Elecraft, I'm not aware of any other 5->100W amplifiers. 73, Dave KQ3T On 12/22/2010 1:29 AM, Igor Kosvin wrote: > Is there any technical merit behind FCC's 15dB amp gain limitation? I saw > commercial RF amplifiers with gains up to 30dB, obviously approved by FCC. I > could understand the limitation for tube amplifiers, the characteristics of > some amp tubes would make high gain unstable. But for solid state amplifiers > the limitation looks strange to say the least. Maybe it's time to ask FCC to > reconsider this. Any ARRL lawyers out there? > 73, > Igor, N1YX > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K3 / 6meters / line out
When using digital modes (excepting CW) I run my K3/100 with a SignaLink USB. Normally I don't use digital modes on 6 or 2 (I have a K144XV installed), but recently I installed the WSJT 9 Suite and noticed the following peculiarity -- on 6 meters only -- which is also audible through the speaker. There is considerably less audio on 6 meters for a given set of front-panel settings than on all the other bands. I normally run LINE OUT = 08, but on 6 meters, to the WSJT 9.02 suite, to get the ~0 dB reading I have to run LINE OUT around 30-35. On 2 meters the LINE OUT setting is the usual LINE OUT = 08. This is not a problem, but it does have me a bit puzzled. Any suggestions out there? I have doubtless overlooked some CONFIG setting? John Ragle -- W1ZI __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
