Re: [Elecraft] K2 turning power behavior
G'day, If you whistle/speak into the mic you get no RF out ! OK I agree. Using PTT I can hear my carrier leak on an outboard RX. When I reduce requested power from 100W past the 10W transition there isn't any reduction in the signal level. Increasing the requested power past the 10W transition the carrier leak decreases and there is no modulation. Also there is no transition from Low to High on the KAT100 display as previously mentioned. Quirky but no big deal and certainly not an operational problem, particularly on CW where it would never be noticed because of the QSK. On SSB just drop the PTT and all is well with the world. Personally I'd be more interested in the A/B VFO switching remembering independent mode settings. Regards, Mike VP8NO ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K2 turning power behavior
G'day, At the salt mine so not near #1400 at present. How exactly do you determine that transmission has stopped? Does the receive unmute? On #1400 when I cross the QRP/QRO boundary level, in either direction, there isn't any unmuting and just for interest I set up as split and the TX frequency remained selected. I must confess that the one thing I didn't check for was modulation. I get the impression that the "feature" is subtle rather than gross. Will check again at the first opportunity. Regards, Mike VP8NO - Original Message - From: "S55M" <[EMAIL PROTECTED]> To: Sent: Thursday, January 20, 2005 8:45 PM Subject: Re: [Elecraft] K2 turning power behavior > OK.I will write it down agn step by step... > > > 1.Turn Power button to 0,1W (full left) > > 2.Press PTT > > 3.When on TX without releasing PTT turn power up over 10W limit to turn on > 100W PA. > > When i do this my K2 stops transmiting above the 10W point (when KPA100 > clicks up). > The only thing to do then is to release PTT and press it again and "voila" > on the AIR again. > > If i go in reverse direction (turning power from 100Wtts to less then 10W) > everything works fine! > > K2 Nr-3204 SW- 1.09 and 2.04 > > It's not a problem but must be a hint..... > > > S55M-Adi > > > - Original Message - > From: "Donald Nesbitt" <[EMAIL PROTECTED]> > To: "Michael Harris" <[EMAIL PROTECTED]>; "S55M" <[EMAIL PROTECTED]>; > > Sent: Friday, January 21, 2005 12:00 AM > Subject: Re: [Elecraft] K2 turning power behavior > > > > Not on mine either. 73 --don n4hh K2/100/KAT100 #2028 > > - Original Message - > > From: "Michael Harris" <[EMAIL PROTECTED]> > > To: "S55M" <[EMAIL PROTECTED]>; > > Sent: Thursday, January 20, 2005 5:22 PM > > Subject: Re: [Elecraft] K2 turning power behavior > > > > > > > G'day, > > > > > > > > > So...if i press the PTT (dot line on keyer when on USB) without talking > > > (or maybe also with ssb modulation because i did not test it) and turn > the > > > power button on 100W and then reduce the power back to minimum my K2 > stops > > > transmitting.I must then release the PTT and press it again to go into > TX > > > mode. > > > Is this happening with all K2's? > > > > > > > > > Not on #1400 (external KPA100/KAT100 combo) unless I've read the above > > > incorrectly. > > > > > > Regards, > > > > > > Mike VP8NO > > > > > > > > -- > > No virus found in this outgoing message. > > Checked by AVG Anti-Virus. > > Version: 7.0.300 / Virus Database: 265.7.1 - Release Date: 1/19/05 > > > > ___ > Elecraft mailing list > Post to: Elecraft@mailman.qth.net > You must be a subscriber to post to the list. > Subscriber Info (Addr. Change, sub, unsub etc.): > http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/subscribers.htm > Elecraft web page: http://www.elecraft.com > ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K2 turning power behavior
G'day, So...if i press the PTT (dot line on keyer when on USB) without talking (or maybe also with ssb modulation because i did not test it) and turn the power button on 100W and then reduce the power back to minimum my K2 stops transmitting.I must then release the PTT and press it again to go into TX mode. Is this happening with all K2's? Not on #1400 (external KPA100/KAT100 combo) unless I've read the above incorrectly. Regards, Mike VP8NO ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] Clicks in K2/100 on rx unmute -- solved!
G'day, I'm sure we would all be interested in more technical detail. Presumably it is a timing issue. Regards, Mike VP8NO | Some may remember that I was hearing an annoying click when the receiver of my | K2 unmuted, only when the KPA100 and the DSP were both active, and only on | 160/80 meters. | | I tried a lot of things, however, what finally worked was changing C72 on the | KPA100 board from 0.01 uf to 0.1 uf. The click is gone. Thanks to Gary | Surrency of Elecraft for the suggestion! ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] A minor C22 question
G'day, Not really an issue. Get C22 right with the cover off and right away do the "cal pll" before putting the cover on. After that it doesn't matter what happens when the cover is replaced 'cos it has no effect whatsoever on calibration. Regards, Mike VP8NO | The cover on vs. off naturally changes overall circuit capacitance as well | as temperature. What you do is see how much you are off with cover on, and | adjust with cover off, in a direction to bring the circuit right on with the | cover on. In other words, you overcompensate the setting for the final | cover on case. A few iterations should give you a hint on how much change | is needed to be right on. marking the slot position with cover off, vs. | cover on, when the frequency is right on should give you the range. Then | set the slot halfway and see if that is not the optimum. It may be less | than the slot width, so a deft touch is needed. | GL and 72, | Stuart | K5KVH ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] KNB2 and 10M Birdy
G'day, 1.Both birdies in #1400 are at the LF band edge of 10M one is from the K2 MCU clock the other is from the KPA100 processor clock. The latter can be put where you wish depending upon your priorities, no birdie at the top end of 75M or no birdie at the bottom end of 10M, take your pick. See KPA100 receiver tests, last point. 2.No birdie at 28020 3.KNB2 on #1400 works very well in my environment. Pulse noises from electric fences vanish. Broadband pulse junk from a faulty sodium vapour street lamp that is S9 on 160M vanishes. Not quite so good with the same source on 30M. I've no complaints. With apologies I will copy the following post from October 2000: Thought I'd add my two (binary) bits worth to the NB discussion: I find that my NB is very effective on an annoying popping sound (mostly on 80M) that I suspect is caused by an electric fence in the area. NB1 reduces it considerably and NB2 removes it completely. I get similar results for certain types of static crashes: NB1 is somewhat effective and NB2 is very effective. However, neither seems to be too effective against electrical noise from drill motors, etc. Back in August a couple of folks posted notes that they had increased C12 on the NB board by a factor of 10 to 20 (thus increasing the blanking gate width to around 1-2 milliseconds) and got much better blanking of electrical noise. So I decided to give that a try. Increasing C12 to 0.1uF definitely resulted in better attenuation (with NB2 selected) of some types of electrical and atmospheric noise. However, it resulted in a rather raspy sounding CW signals. Backing off to 0.047uF worked just about as well on noise and did not produce any noticeable effects on signals. As a result, I have made the following mod to my NB board: 1. Changed C11 from 0.001uF to 0.0068uF (using the original C12 cap) to give an NB1 blanking pulse width of 65-70 us (instead of 10 us). 2. Changed C12 from 0.0068uF to 0.047uF to give an NB2 blanking pulse width of around 500 us (instead of 70 us). Seems to be a good overall compromise for the types of noise that I hear. Your results may vary. 72/73, Larry W1HUE/7 Regards, Mike VP8NO ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] KSB2
G'day, Currently in the process of building a second KSB2 module for #1400 so that I can do various mods to the original. Having reached the stage of installing the crystals I pondered the desirability and possibility of grounding the cases lower down as is now normal for the basic CW filter. This is easily done if the following sequence is employed: Instead of fitting all the crystals in one go: a) X4, then a short grounding wire about 1/3 of the way up the face of X4 b) X3, then a short grounding wire about 1/3 of the way up the corner of X3 c) X5, as for X3 d) X1 & X2. Curl the grounding wire across the edges of the crystals about 1/3 of the way up e) X6 & X7, as for X1 & X2 above. For the last two it is necessary to be careful not to toast C23. I have a picture of the result if anyone is interested. Maybe the N0SS web site if this method is thought useful. Not completed the module yet so no Spectrogram plot. Regards, Mike VP8NO #1400 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] KPA100 & EC2
G'day, Ooops, I failed to notice the ventilation along the edge of the KPA100 heatsink, so no problem after all. Now trying a little experiment with a small PC PSU type 12V dc fan propped up at one edge about 40 degrees by a wire version of the tilt stand and blowing on/along the heatsink front to back on the PA's side. At 30 watts output QRSS10 the heatsink is just warm to the touch. Also, the fan is pretty quiet, in fact the noisy little bugger on the back of the KPA100 hasn't even switched on so I guess I will have to select "Fan LO/HI" to stir the air in the EC2. Regards, Mike VP8NO ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] Hum Coupling
G'day, By coincidence I opened up our stereo amp to have a go at lubricating a noisy volume pot. I noticed that the torroidal mains transformer was of shielded construction. Maybe this is the answer to the PSU hum coupling problem. A 20A psu in a double height EC, speaker etc as has already been suggested. Regards, Mike VP8NO ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] Can this weekend be as good?
G'day, | Still trying to figure out why I might need a beam, | 73 de Larry...WD3P/QRPp in MD So that you can reduce your 400mW maybe to 200mW or less. Regards, Mike VP8NO ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] SSTV
G'day, Just downloaded and installed MMSSTV v1.11, plugged the K2 ext speaker audio into the PC sound card and it ran right out of the box with virtually no setting up. FL2 OP1u, KDSP to LPASS. Good pictures from CE3TMM, EM1HO and PY7TK on 14230kHz. FWIW. Regards, Mike VP8NO ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K2/100 power-out change
Rich, Further to my earlier posting. The resistor to change is R98 on the RF board. I have changed mine from 270 ohms to 1200 ohms and that completely removed the power hunting. Without doing this it is almost impossible to properly set up the KAT100 if you build one. Regards, Mike VP8NO ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K2/100 power-out change
G'day, > Sounds like both K2's I have had. 38xx and 44xx. The output jumps all over > the place. My amp does not like it either. When I posted about it, the > response I got was that is "normal". If this is the often reported O/P power change then yes this is "normal", however, it shouldn't be. The problem is really only apparent when the KPA100 is installed so QRP ops will not notice it. The cure is the change in value of one resistor in the ALC loop. I'm not near any documentation so I can't tell you the resistor designation. There is a test procedure on the Elecraft web site to optimise the value but I believe in most case just changing the value to 1k-1.2k ohms does the trick. Just make sure you have at least 10W output on 10 metres before you do it. I'm surprised that at this stage of product maturity the problem still exists in new kits. Regards, Mike VP8NO ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] Low Power ?
G'day, > No, not twisting. Interleaving is simple. Pass one wire through each > hole, then pass the other wire through each hole. Keep alternating > until all the windings are done. As I remember, one winding has more > turns, so start with that wire first. > > This is different from the original manual, which suggests you wind one > layer, then the other. Well this seems overly complicated. What has changed? #1400 has been throbbing at full power 10W+ on 10 metres since day one. Another suggestion I have made is not to try and align the BPF's with the built in power metering. Much easier to get it on the nose with an external analogy meter like the WM-2 or similar. The meter swing is so much easier to interpret than dancing digits. Regards, Mike VP8NO #1400 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K2 ATU question
G'day, > I'm using an indoor wire antenna for all bands except 30m, where I'm testing a > home built mag loop. The wire antenna is connected to ant #1, the mag loop to > ant #2. The mag loop is resonant and doesn't use the ATU, while the wire > antenna needs the ATU. > Now each time, I change to 30m, I do have to disable the ATU manually by > switching it into CALS mode, which is very inconvenient. Alternatively, I can > connect a dummy load, tune the ATU into the dummy load on 30m, and then > reconnect the mag loop. The problem with this second approach is that after > accidently tapping tune, I will have to repeat the whole process (disconnect > antenna, connect the dummy load, ...). > > Since the given setup (having a resonant antenna and another one that needs > the ATU) seems pretty common to me, I do assume that there is a simpler > solution. Is it possible to disable the ATU for one of both antenna > connectors, or for a specific band? Any other trick to make changing bands > simpler? Can't see the problem. I have a log periodic for 18-30MHz on ant-1 and a vertical for lower bands on ant-2. It does not matter if the atu stays in circuit and "tunes" the matched resonant antenna. Just the same as matching to the dummy load. My vertical is a good 50 ohm match on 10MHz but I also very occasionally press it into service on 7MHz where the ATU keeps the PA happy. Regards, Mike VP8NO ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K2 Birdies
G'day, #1400 revision "A" matches this +/- calibration: | 4000 Yes at S1 | 7000 Yes at S0 | 10170Yes on CW at 10172.4 at S0 | LSB at 10172.5 at S0 | USB clear USB at 10167.3 at S0 | 14171Yes on 14172 CW/LSB at S0 | 14167 USB at S0 | 14350Yes on CW transit only 14351.19 to 14351.20 | LSB transit only 14351.38 to 14351.39 | USB transit only 14353.38 to 14353.39 | 14361Yes on CW transit only 14361.19 to 14361.20 | LSB appears abruptly 14361.40 and disappears same. S7 | USB appears abruptly 14363.38 and disappears same. S7 | 18172Yes on 18172.40 CW at S0 | 18172.50 LSB at S0 | 18167 USB at S0 | 28000Yes on all modes at S0 | 28277Yes on CW 28275.80 at S0 | LSB 28277.70 at S0 | USB 28275.60 at S0 | 29483Yes on CW 29480 at S0 | LSB clear | USB 29481.40 at S0 Mike VP8NO (G3VUI) #1400 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] best ultralightweight beach vertical?
G'day, How about carbon fibre fishing rod blanks. Ordinary glass fibre would work with a flex weave conductor threaded up it with about 10-15cm sticking out of the top so that the sections can be parted and folded into a bundle. Could even be used as a fishing pole. Someone else will have come up with the stake Regards, Mike VP8NO > like a multi-section or telescoping vertical that's 8 to 10' long, 0.5" > or smaller in diameter, and most important, weighs just a few ounces. > In a perfect world it would also come with a stake to plant in the > sand. It doesn't even have to be resonant, since I can use the KX1's > internal tuner, supplemented if necessary by a small coil interposed > between the rig and the antenna, to tune the antenna on all three > bands. This would make for instant band change without fussing with a > tap or swapping loading coils. A nonresonant whip would also probably > be a lot lighter and less expensive than backpacking-style antennas > that are packaged with per-band coils, etc. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] Iambic mode faux pas
G'day, > So how many mode "A"ers are there out there? Am I the only mode B paddle > pusher? No. Regards, Mike VP8NO ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] WA3WSJ: Berks County Covered Bridge Tour Page!
Hi, > If you're interested, have a look at my Berks County Covered Bridge > Operation Page. If you have slow dial-up like me, please allow a minute > or two for the entire page to load. You won't want to miss these > beautiful qsl cards and the gorgeous certificate of "The Covered Bridges > of Berks County." There must be many examples of this sort of bridge in the USA. It brings to mind the "Bridges of Madison County" (sp) with Meryl Streep and Clint Eastwood. Like the pictures on the web site, shame about the mhz for MHz though. Regards, Mike VP8NO ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] Audio Level - KDSP2
G'day, For quite a while I've noticed some low level but irritating addition to the audio which I have put down to the KDSP2. So I decided to swap it out for the KAF2. Sure things were sweeter in the audio but I decided to swap again so that I could do the mod to reduce the ringing of AFIL-2. One thing I immediately noticed was that the audio output for the same gain pot setting was much higher with the KDSP2 installed. A quick check of the CF-G setting showed it was still at the default 0.0dB, #1400 has never been short of audio. I slowly reduced the CF-G gain setting to -3.0dB and things improved in the low level irritating addition stakes. Time will tell. The Cn-G remains at 2.0dB and the audio level of the CW signal remains the same with NR on or off. Does anyone else notice that many CW signals these days are somewhat less than T9. I was beginning to believe it was to do with the DSP but a tune up the band would find another similarly strong signal singing pure. OK, most of my operation is by choice on the margins, weak signal and long path stuff, just about everything from here is DX anyway, and I can tell when the signal is suffering propagation effects. JA long and short path at the same time on the grey line and the 30M vertical is almost impossible to copy. Something I am planning to note is the frequency of the odd and the pure just in case it's a synth step boundary thing. It happens on all bands so it isn't the 40M "weird on one frequency" issue, never had it anyway. Regards, Mike VP8NO #1400 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K2 - VOX - Straw Poll
G'day, > a) Do you use VOX ? No > b) If not, why not ? More control. Regards, Mike VP8NO ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] Fw: Perseid Meteors and a Big Sunspot
G'day, This might be of interest: | Space Weather News for August 10, 2004 | http://spaceweather.com | BIG SUNSPOT: Sunspot 649, which unleashed several powerful solar flares | in July, is back and it's growing again. The large spot has a complex | magnetic field that harbors energy for X-class solar flares. It's easy to | see, but never look directly at the blinding sun. Check SpaceWeather.com | for safe solar observing tips. Regards, Mike VP8NO #1400 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] SMT Kits
G'day, Thinking on this, how about: Remote antenna switch. 1. Activated by a dc signal applied via the main co-ax. 2. Drops to an internal load. 3. Sniffs the rf in a "tune" cycle to determine the frequency. 4. Selects via latching relay the designated output port (co-ax socket) 5. Switches "through". 6. Goes to sleep until activated again. Could be powered by a remote battery, possibly charged via a very small photo panel. Just a thought, needs some polish. Regards, Mike VP8NO #1400 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] OT: SMT kits?
G'day, > I would *never* buy any kit that requires more than an item or two of SMT > work. SMT construction is specifically designed *only* for machine > assembly. IMO, any SMT kit must come with almost all the SMT components > pre-assembled to the PC boards to be acceptable. Well I guess "through hole" is going to vanish sooner or later, probably sooner, so we had better get used to it. Yes, I would buy a kit that uses SMT components. A right royal pain in the butt no doubt, so I would like to start small (no pun intended). Regards, Mike VP8NO #1400 + re-heat ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] Noise Problems...still
G'day, | higher noise levels than I think I should. On 40-meters, I am getting an average | of S2-4 peaking at S5 around the time thunderstorms begin to form. What happens when the antenna is unplugged? S2-4 on 40 metres, presumably at night time, doesn't sound particularly unusual to me. That 20 foot "ground" is only "ground" at near DC. Your vertical, whilst not being balanced is the full two terminal antenna and doesn't need a "ground" at the radio to make it work. Regards, Mike VP8NO ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] Noisy AF gain pot on K2
G'day, <> minimum setting. (I'm 74 & a bit deaf!!) Has anyone done the mod and achieved near silence at the minimum position?? Thanks in anticipation. John GW3JXNK2 2649 <> AF gain pot mod on #1400 results in total silence with or without DSP installed. Regards, Mike VP8NO ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] Colour (Color)
OK Gentlemen, It looks like the sisterhood has it. | As presented to all men before their wedding day: | Law 1: the wife is always correct | Law 2: When in doubt, refer to law 1... The lady director of the company I work for says there is a third law: Law 3. All husbands should know their place - in the wrong | the color is "Granite.'" Granite does it for me. Many thanks for your thoughts and observations. Regards, Mike VP8NO ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] Colour (Color)
G'day, I say it's green, XYL says it's grey! What colour is the K2 by popular opinion? Regards, Mike VP8NO #1400 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] Slow Web Site
G'day, I've been trying to download the construction manual for the EA3BLQ K2 digital interface. The site: http://www.qsl.net/ea3blq/download_ang.htm Is pathetically slow, <1000 bytes/sec and for a 2.4Mbyte download that is not an option. Anyone know another source? Regards, Mike VP8NO ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraftHelp: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] Bending component leads
G'day, <> What's wrong with simply holding the diode body between thumb and forefinger and bending the lead against your thumbnail? de Joe, aa4nn <> Nothing, it works perfectly, every time. Regards, Mike VP8NO #1400 et al ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraftHelp: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] OT: "Line level"
G'day, My interpretation of the point that G3VVT was making is that a blanket dismissal of the 600 ohm reference is hazardous depending upon the circumstances. I also know nothing about pro audio, however, like G3VVT I have had a long and varied career in telecommunications. 600 ohms is the general impedance of 0.5mm diameter conductor poly insulated twisted pair telephone cable at audio frequencies. This drops to about 150 ohms at T1/E1 frequencies over the same pair. All the telco test equipment I have worked with at audio level offers 600 ohm source and terminations as well as high impedance bridging. AF attenuators were all 600 ohm balanced input/output. Impedances in transmission systems commonly change along the line. In our first earth station, built 20 years ago, we went from 600 ohm input to the PCM channel equipment, from there 75 ohm to the up/down converters and 50 ohm for the rest of the SHF link. It was essential to make sure you had the right matching transformers in your test set-up when making measurements. The USA and Europe has a history of doing things differently, a totally different coding law for PCM, different baseband data rates and hierarchy. and on. Standards are great, so many to choose from! Regards, Mike VP8NO (G3VUI) Ex. GPO/PO/Telecomm and C&W - Original Message - From: "Jim Brown" <[EMAIL PROTECTED]> To: "Elecraft List" Sent: Friday, July 02, 2004 10:26 AM Subject: Re: [Elecraft] OT: "Line level" > On Fri, 02 Jul 2004 06:29:33 -0400, Mike S wrote: > > >At 11:32 PM 7/1/2004, Jim Brown wrote... > >>BTW -- forget all that ancient stuff about 600 ohms. Pro audio hasn't used a 600 ohm > reference for at > >>least four decades. > > > >That may perhaps be true for a limited range of "pro audio" applications, > >but 600 ohm audio transmission lines are still VERY common both in > >telephone and PA applications. If you forget that stuff, you WILL end up > >with real problems. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraftHelp: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K2 menu change
G'day, > While I can't think of any definite reasons, but it sounds like you are > hearing a carrier somewhere near where the K2 input is tuned (28 mHz band). 7th harmonic of the 4 MHz clock in the KPA100? It runs all the time. Easily heard at the bottom end of 28 MHz. Similarly the 4 MHz clock on the K2 control board. Regards, Mike VP8NO ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net http://mailman.qth.net/mailman/listinfo/elecraft You must subscribe to post. Subscriber Info (Addr. Change, Unsub etc): http://mailman.qth.net/subscribers.htm Elecraft page: http://www.elecraft.com
Re: [Elecraft] DSP Filter?
G'day, | Folks, I guess I just started removing the KAF2 for filter aligment when I | first had to deal with it Unnecessary 'cos there is a slide switch on the KAF2 just for that purpose, to bypass it. If the KPA100 lid is fitted, the switch can be conveniently used just by removing the top panel just in front of the heatsink. Regards, Mike VP8NO #1400 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net http://mailman.qth.net/mailman/listinfo/elecraft You must subscribe to post. Subscriber Info (Addr. Change, Unsub etc): http://mailman.qth.net/subscribers.htm Elecraft page: http://www.elecraft.com
