[Elecraft] KAT3 ATU Problem
Mike K8CN wrote *< It wouldn't have occurred to me to look atthe LPA stage as a source of trouble, but ifthe TX power is ramping up slowly, then I cansee where the ATU control algorithm isconfused by the change in power levels bothforward and reflected. My ATU seems tochange relay settings very fast, and the controlalgorithm is looking at change direction (maybechange magnitude as well) in SWR to decidewhich relays to flip next. The relative adaptationspeed of the control algorithm and the TX powerramp-up could certainly cause interactions thatmight slow the ATU convergence, but I wouldthink that once the TX output power stabilized,the ATU control algorithm would be receivingvalid SWR readings as it flips relays.When you say it takes seconds to ramp upto full (TUNE) output power, does this happenon every TUNE button press? Does it also occurwhen you send CW from the paddle/key? Canyou watch the RF envelope on a scope to timethe power ramp-up?73,Mike, K8CN >* Mike, Thanks for that and I do understand what you say about the possibilty of the control algorithm getting confused by the slow ramp up of power. Last week Rob at Elecraft Support had me using a 50 ohm dummy load with the KAT3 bypassed. Set PWR to 5.0 W and hold down XMIT to TUNE, this performs a Tx gain calibration. Then set to 11.9 W and TUNE again. My results were 5W immediately but rising from 8.4 to 9.8 W in about 6 seconds Rob then had me checking WMTR LP setting in CONFIG menu (TECH MD ON). This was set to the default value of 70 which he suggested I increase . (I'm not at all sure what this is doing). Increasing this value to the maximum of 180 gave me 10 W increasing to 12.0 W in 2 seconds, faster but still quite a delay. This does happen on every TUNE button press but I don't have any problem during my daily use of the rig on CW. I have not fired up my old Tektronix scope yet to look at the keying envelope. Elecraft Support have gone quiet this week so no further progress. 73 and thanks for your help, Tom G3OLB __ 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 Message delivered to arch...@mail-archive.com
[Elecraft] KAT3 ATU Problem
Mike (K8CN) and others - thanks for your inputs. I'm talking to Paul at Elecraft Tech Support who, by the way, is being most helpful. He reckons I have a problem with the Low Power Amplifier which takes a few seconds to come up to full output power. I'm not at all sure how that affects the SWR measurement and ATU setting, but I'm going to follow along with his advice and see where it gets me! Then perhaps I'll start looking in detail at the SWR bridge components. The rig has a 100 W pa and second Rx Mike. 73 Tom G3OLB *Tom,* *I'm going to go out on a limb here, but hey,* *it's only a virtual limb!* *I am going to withdraw my previous statement* *that the K3 SWR bridge is operating correctly.* *Given what you've said, the ATU control algorithm* *is receiving bad information from the SWR bridge.* *Here's how to test this hypothesis:* *-- use a different resistive load than 50 ohms, e.g. two* *50 ohm loads in parallel using a tee-junction,* *or build a higher resistance load using* *several non-inductive power resistors, or* *use a 4:1 balun reversed to present a 200 ohm* *load to the ATU when balun terminated in 50 ohms.* *-- put the KAT3 ATU in 'bypass' mode* *-- measure SWR at low TX power (whatever* *power the ATU uses automatically is fine* *as long as your loads can tolerate the dissipation* *briefly).* *Schottky diodes D36 and D37 in the K3* *SWR bridge detector circuit are known* *to be sensitive to high voltage transients,* *e.g. ESD or lightning-induced voltages.* *Failure of either or both diodes produces* *bad SWR estimates, which may not* *be observed when using a good 50 ohm* *termination.* *If you have a good high impedance DC* *voltmeter (DMM), you might check* *the voltages VFWD and VREFL at the* *outputs of the LM358 op amp unity* *gain buffers (U16 on the K3 RF board)* *to observe how each behaves with* *different load resistances at the ANT* *port(s). If the VREFL voltage doesn't* *change predictably with mismatched* *loads, it could be that diode D37 has* *failed.* *A search of the old Elecraft reflector* *and the separate K3 *groups.io* forum* *reveals lots of discussion about anomalous* behavior* of the ATU, frequently associated* *with SWR bridge component failure.* *73,* *Mike, K8CN* __ 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 Message delivered to arch...@mail-archive.com
[Elecraft] K3 ATU Problem
*You can set TUN PWR in the K3 Config Menu to something other than 5 watts.73,DrewAF2Z* Drew, Page 60 of K3 Owner's Manual states: "TUN PWR Note 1: *TUN PWR* does not pertain to *ATU TUNE, *which always uses 5 or 10 W and is internally controlled" Does anyone know how to change the 'internal control' to increase from 5 W to 10 W? 73, Tom G3OLB __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3 Auto ATU Problem
*TomI've found that pressing tune again, immediately after a tune sequence sets it off to do "fine tuning" which might help.David G3UNA* Thanks David - yes I've tried that, but it still ends up with a poor indicated SWR. Also cleaned up and tightened the screwed pillar in the KAT3 corner, tightened up the 3 LPA screws underneath. It's very strange! 73, Tom G3OLB On Tue, 7 Dec 2021 at 12:21, CUTTER DAVID wrote: > Tom > > I've found that pressing tune again, immediately after a tune sequence > sets it off to do "fine tuning" which might help. > > David G3UNA > > > On 07 December 2021 at 11:59 Tom Boucher wrote: > > > > > > Thanks NK7Z, NK7I and K8CN for responses. > > > > Dave and Rick indicated that running the K3 at a higher power level > during > > the ATU Tune sequence might solve the problem however, as far as I can > see, > > the power level is fixed at 5 watts during auto tune and cannot be > altered. > > > > Mike, there is no problem with the Ant 1 and Ant 2 ports and manual > > selection of L & C works OK. The ATU just won't end up with the right > > settings for lowest SWR. The problem has not always existed. > > > > 73, > > Tom G3OLB > > __ > > 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 > > Message delivered to d.cut...@ntlworld.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 Message delivered to arch...@mail-archive.com
[Elecraft] K3 Auto ATU Problem
Thanks NK7Z, NK7I and K8CN for responses. Dave and Rick indicated that running the K3 at a higher power level during the ATU Tune sequence might solve the problem however, as far as I can see, the power level is fixed at 5 watts during auto tune and cannot be altered. Mike, there is no problem with the Ant 1 and Ant 2 ports and manual selection of L & C works OK. The ATU just won't end up with the right settings for lowest SWR. The problem has not always existed. 73, Tom G3OLB __ 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 Message delivered to arch...@mail-archive.com
[Elecraft] K3 Auto ATU Problem
Dave (NK7Z), The K3 performs its auto-tune sequence at a power output of 5 watts I believe. 73, Tom G3OLB __ 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 Message delivered to arch...@mail-archive.com
[Elecraft] K3 Auto ATU Problem
I'm wondering if someone can help with a KAT3 ATU problem on my K3 S/No.01434? When bypassed, the K3 SWR indication agrees with that on an external SWR meter. This is also so when the KAT3 is replaced with a KANT3 board. When in AUTO mode it goes through its relay rattling sequence for each band, but ends up with a mis-match as indicated by the K3 meter. For example, with a 50 ohm load, in BYPASS the K3 indicates 1.0:1 SWR on all bands as it should. When in AUTO mode the indicated SWR is anything up to 4.4:1. I have tried a different KAT3 with the same results. I have also re-loaded the firmware (version 05.67/2.88/2.88/1.26). Thanks in advance. 73 Tom G3OLB __ 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 Message delivered to arch...@mail-archive.com
[Elecraft] P3 SVGA board wanted
Does anyone have an SVGA board for the P3 Panadapter for sale? Thanks, Tom G3OLB __ 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 Message delivered to arch...@mail-archive.com
[Elecraft] Trees eating wire
Wayne's problem with a tree eating his wire reminds me of an incident some years ago when I was attempting to get an antenna halyard over a tall oak tree. I used some braided nylon cord with a probable breaking strain of several hundred pounds, which was attached to a drilled golf ball. My catapult put the ball and cord over a branch somewhat lower than intended so I attempted to pull it back. Of course the inevitable happened and the ball wound itself around the branch. No matter how hard I pulled the cord it wouldn't come. So I wound the cord around a piece of wood and with my heels dug into the ground, gave it my full body weight plus some. Finally it released itself and the golf ball shot towards me hitting me in the right foot and breaking several bones. I had literally shot myself in the foot! I'm just thankful it wasn't 2 or 3 feet up otherwise my voice would now be an octave or so higher. Heard the guys sniggering behind the curtain in the hospital A department after I told them I had shot myself with a golf ball. XYL not at all impressed at having to drive me to the salt mine for 6 weeks. Lead weights used by anglers could be even more lethal. Needless to say I don't use that method any more and now use a compressed air device with weighted tennis balls which works a treat! 73, Tom G3OLB __ 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] 160 unusual conditions.
Just a note to those that may be interested: For the last two days, signals from ZL3IX at Eu sunrise have been peaking S9. This morning Greg was a good 579 running just 20 watts, before he turned his amp on. 73, Tom G3OLB __ 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 Message delivered to arch...@mail-archive.com
[Elecraft] Aged K3 - connector replacement
After deliberating for years about my ability to change the 28 way motherboard to front panel connector on my 10 year old K3 for a gold plated one, I finally plucked up the courage and did the job in about 2 hours. Elecraft supplied me with a replacement connector some years ago. I have to say it was a lot easier than I expected and hopefully will now perform without all sorts of random faults being displayed and regular removal and re-fitting of the front panel. So if, like me, you are not sure about doing the job, remove the front panel and top and front bottom panels to give maximum access. Remove the old connector by snipping the plastic between each pin one at a time, use a solder sucker and hold the pin while removing it with a small croc clip. When they are all out, clean solder out of all the holes with fine solder-wick braid and flux. The new connector should then push into place. Re-solder on the opposite side of the board to the connector and the solder will flow through and around each pin. My K3 appears to be working perfectly now, so am hoping it will now stay that way! 73, Tom G3OLB __ 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 Message delivered to arch...@mail-archive.com
[Elecraft] First solid state QSK rig
Paul NA5N - the Ten Tec Triton IV was available in 1976, which is when I bought one from 'Ham Buerger' in Philadelphia, where I lived at that time. As you say, it was the first 100 watt solid state rig with full break in. 73, Tom G3OLB __ 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 Message delivered to arch...@mail-archive.com
[Elecraft] K3 internal connectors
Can anyone tell me at what point (Date-S/No.) Elecraft started fitting gold flashed connector pins on the internal connectors? A member of our contest group is interested in buying a used K3 and I have advised him not to get an older one because of the connector reliability issues. Thanks, Tom G3OLB Sent from PITA Mail for Windows 10 __ 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 Message delivered to arch...@mail-archive.com
[Elecraft] 80 Metre Verticals
Fred, If your inverted 'L' was a bit less than a quarter wave long, it would have been capacitive and showing 57-j130 (not plus). In which case you needed a small inductor to match it to your 50 ohm coax, not a capacitor. 73, Tom G3OLB __ 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 Message delivered to arch...@mail-archive.com
[Elecraft] [K3] Detuning Antenna Per Band and QSK
Brian, I think Jim is more concerned about his beverages losing their directional properties due to re-radiation of received signals from his transmit antenna. I don’t think there is a simple way of doing this and it’s probably best to abandon QSK operation when using the beverages and use a relay, operated by the K3 PTT output, which open circuits the base of the inverted ‘L’. 73, Tom G3OLB Another way to do what you want might be to switch some attenuation into the receive path during transmit. I assume you are using the RX antenna port for the beverages. The switching could be done with pin diodes with the timing tuned to allow QSK. Hope this helps. Brian, K0DTJ __ 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 Message delivered to arch...@mail-archive.com
[Elecraft] Plasma TVs discontinued
I've had a Pioneer plasma for the past 12 years without any trace of noise. Admittedly all my receiving antennas are sited over 300 feet from the house. 73, Tom G3OLB __ 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 Message delivered to arch...@mail-archive.com
[Elecraft] K3 Erratic SSB Power Output (G8DX)
Jack, Each time I have had problems with my K3, including the one described by yourself, I have fixed it by removing the front panel, carefully cleaning all connector contacts and re-assembling. I put a thin layer of 'Contralube' (Maplins) on the connector pins which not only keeps the connector surfaces in good condition but also reduces the amount of force needed to remove the panel. I can do it with my thumbs now and don't have to use the little screw driver slot. Remember to remove that screw on the 3-D block on the lower left side. Good luck! Tom G3OLB __ 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] Inv-L joy
What bothers me about putting the actual antenna wire across the tree is that it is then very close and in fact touching the tree. I'm not sure what loss the tree would cause by having it so close. My inverted-L is held 85 ft up in an ash tree by nylon rope. I have a rope and insulator near the bottom which stands it off from the tree in the direction of the top section. I guess mine is 5 or 6 ft away at the top and further at the bottom. Nylon rope is pretty good from an abrasion viewpoint but it will still abrade. My L came down recently after well over a year of backwards and forward over the branches, so now my annual maintenance will include lowering the antenna, shortening the halyard at the top end to allow a fresh section of rope across the branches. Polyester rope is not nearly as abrasion resistant as nylon but looks very similar, so be careful what you are using! 73 Tom G3OLB __ 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] Inv-L joy
Sorry! Wrong reflector - was meant for the 160 one __ 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] Yamaha CM500 alternative
The Koss SB45 (as opposed to the SB40) DOES contain an electret mic insert. I find this headset very good as an alternative to the Yamaha CM500 which, for some inexplicable reason, is unobtainable in Eu. 73 Tom G3OLB GM4LMH wrote: The Koss SB40 is fine with the K3 if you remove the nasty dynamic insert and replace with an eletret insert. __ 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 - ERR BP1, XV3, AT3, IF1
Jim (KG0P), These error displays sound similar to ones I get from time to time. Remove the front panel and carefully clean all the connector pins. Then apply some connector lubrication before replacing the panel; we have some stuff called 'Contralube' over here. An added benefit is that you no longer need to get a screw driver in the square slot to remove the front panel next time. It comes off using just fingers and thumbs. I have to carry out this procedure once every year or two. On later model K3s, I believe Elecraft used connectors with gold flashed pins which resolved the problem. 73 Tom G3OLB __ 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] Cheap headphones
Dave G3TJP, Re your post on non-availability of cheap headphones, the Yamaha CM500 is undoubtedly a preferred choice but is unavailable in Europe - the US suppliers won't ship it to Eu either. A good alternative I found for my K3, is the Koss SB/45, which is quite comfortable during long periods of contest operation and has an excellent quality electret mic. It's currently £20.98 free postage on Amazon. 73 Tom G3OLB __ 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: SP 2 switches back to SP 1 during RX in Split
Yes Richard, this has happened to my K3 several times, always when the volume is too high and a loud burst of audio occurs. 73 Tom G3OLB My friend Simon, HB9ATG has a strange problem: While listening in split mode, suddenly a relay clicks and the K3 switches back to mono, i.e. CONFIG:SPEAKERS 2 unexpectedly returns to SPEAKERS 1, without his transmitting or doing anything at all, just listening to the pileup. This can happen several times a day. Has anyone noticed this before? 73 de Richard - HB9ANM __ 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} Amp Interface
Yes - have been using the K3/Titan III combination for several years with no problems. Not using any ALC connection of course. 73 Tom G3OLB Message: 23 Date: Sun, 6 Jan 2013 14:18:40 -0600 From: W4SK w...@comcast.net To: elecraft@mailman.qth.net Subject: [Elecraft] K3 Amp Interface Message-ID: 441D8772B8F146AFA84294DEF87044EE@ownerc1f73f74f Content-Type: text/plain; format=flowed; charset=iso-8859-1; reply-type=response Say - while I'm asking stoopid questions. has anyone successfully interfaced a K3 with a Ten-Tec Titan III? __ 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} Amp Interface
Yes, K3 'Key Out' to Titan 'PTT/VOX' only. I don't use the 'Key In/Key Out' QSK feature on the Titan, but I have slowed the K3 Tx Delay to 12mS (CONFIG:TX DLY:12) although the Titan relays are probably fast enough for the K3 default setting of 8mS. 73 Tom G3OLB From: W4SK w...@comcast.net Just the key out and the coax to the Titan? Yes - have been using the K3/Titan III combination for several years with no problems. Not using any ALC connection of course. Say - while I'm asking stoopid questions. has anyone successfully interfaced a K3 with a Ten-Tec Titan III? __ 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) SWR Consistent - low or high power
My theory in these cases is that it's nothing to do with bad antenna connections, but more due to the rig putting out a higher harmonic content at higher power levels. The SWR meter sees a bad SWR at the harmonic frequency so the reading is slightly worse. 73 Tom G3OLB N3OI wrote: *One observation:* I use low power to set SWR with my TenTec manual tuner. My FT-920's SWR meter would usually shift a bit when I increased power to 100w and I would then quickly tweak it back down. With the K3's SWR meter (no ATU installed), after setting the tuner at 10w or so, the reading stays the same when power is increased to 100w. __ 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] Echo
Tony - There is a 'Voice Tx Fast Monitor' facility which overcomes this: Set CONFIG: TX MON to FAST Tom G3OLB Don't know what I may have changed, but when I transmit using SSB - there is a terrible echo ringing in my headphones - ideas? - Tony, N3ME - __ 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} Muffled Audio
Someone recently posted about a delay in the audio sidetone while on SSB. Remember that F/W update 4.22 included a 'Voice Tx Fast Monitor' function: CONFIG: TX MON set to 'FAST' then you don't get the un-nerving delayed audio. This was something I asked for a while back and was subsequently included in an update. What service from Elecraft! 73 Tom G3OLB __ 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] Lead Weights and Fishing Line while Operating
The other thing to watch when using lead weights is to be very, very careful pulling back the line when it goes over the wrong branch. I literally shot myself in the foot when doing this some years ago. Crutches for 6 weeks! 73 Tom G3OLB __ 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 Mic
Mike, This is the quote from the Yamaha CM500 advert on Amazon: In Stock. We are not able to ship this item to your default shipping address. 73 Tom G3OLB Amazon ships worldwide, with some restrictions. Their site says the Yamaha CM500 qualifies (consumer electronics). Here's a link to their policies. http://www.amazon.com/gp/help/customer/display.html?nodeId=596184 73, Mike NF4L __ 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 Mic
Paul, The Yamaha CM500 is undoubtedly a good choice but is unavailable in Europe - the US suppliers won't ship it to Eu either. A good alternative I found, is the Koss SB/45, which is quite comfortable during long periods of contest operation and has an excellent quality electret mic. It only cost me around GBP25 which is about $37. 73 Tom G3OLB - My question is what types or brands, models are K3 owners using with the rear panel mic connection on the KIO3 panel ? Tnx and 73 Paul __ 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] CW in SSB mode
Not true Pete: CONFIG: CW WGHT and tap '1' until you see 'SSB+CW' 73 Tom G3OLB Besides, you can't key the rig if you're in ssb. Pete, W1RM __ 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] UK Re-seller
The advantage is you can go to WS, look at and try the rig, then purchase it direct from Elecraft! 73 Tom G3OLB __ 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] FM Transmit Audio Level
Ed, Don't forget there is a High/Low mike gain setting (MAIN:MIC SEL Tap 1 to toggle High/Low). Probably not much use to you unless it can be somehow selected for FM only. 73 Tom G3OLB KL7UW wrote: So I wonder if there is an internal mic gain pot that can be adjusted for FM? __ 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) Headst/Mic
An alternative K3 headset in place of the Yamaha CM500, which appears to be unobtainable in Europe, is the Koss SB45. I just bought one of these from an internet supplier for 20 pounds (about $30) and it seems quite comfortable and it does have an electret mic element, not a dynamic one. The 3.5mm jacks plug directly into the rear panel Phones and Mic sockets. MAIN MENU: MIC SEL is set for RPL with bias ON. I have the MAIN MENU: TX EQ set for a rising characteristic (0,0,0,+3,+6,+9,+12,+15dB) and it sounds just great in the monitor. However on-air tests may show that a bass cut with flat characteristic (-16,-16,-6,0dB the rest) per K9YC recommendation may be better. 73 Tom G3OLB __ 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 intermittent low power output
Dave, It's worth removing the front panel assembly, cleaning the connector pins, applying some 'Contralube' (obtainable from Maplins) to the pins and re-assembling. A year ago I had all sorts of problems with my K3, including that which you describe. The above measures completely fixed it. 73 Tom G3OLB __ 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 - SPKR+PH Fault
Hello Paul, I have had a similar fault. Occasionaly at switch-on, there is no audio from the speakers. If I insert and remove the phones into the front jack, the audio returns. I've also fixed it by turning power OFF and ON. As Don says, probably a glitch in software. 73, Tom G3OLB ZL4PW wrote: Further to the earlier issue... i.e. my K3 is in SPKR+PH - On mode even though the rig says it is off. This only occurs thru the front speaker port. When I plugged the phones into the rear socket, the internal speaker cut out and I have the usual sound from the rig... I would still like to fix the front phone socket issue as it is much more convenient for me to revert to Speaker from that position. This curious behaviour occurred overnight... it was fine when switched off yesterday and appeared at switch-on today.. I did not access the menus for any reason. I wonder if a firmware re-install may correct 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] K3 Wish List -XIT Tell-tale
Wayne, the annoyance factor could be reduced by ANDing the flashing 'Delta-F' light with the red 'Tx' light. That way it would only flash a warning when transmitting. Thaty's what I like about Elecraft, an instant response even on Sunday 1st January! 73 Tom G3OLB N6KR wrote: That said, I'll add to my list consideration of flashing the XIT icon and/or the Delta-F LED. I have to be careful with such changes because of unintended side effects and the annoyance factor. __ 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 Wish List - XIT tell-tale
I guess Elecraft are now beyond wanting to make relatively minor changes to the K3 as it is now a mature product, but how about this? On two occasions recently I have been in QSO with a weak distant station on 160 or 80 and a very loud EU has come up on the same frequency with a QRL? On my reply of 'R Pse QSY' the other station ignores me and begins a long and loud CQ thus wiping out the one I'm trying to work. Both times I established that the interfering station was using a K3 and had inadvertently left the 'XIT' function on, thus transmitting on a different frequency to that he was listening on. The yellow 'delta f' tell-tale LED is there to tell you that either the RIT or XIT function is on, but if you are already using the RIT function, there is nothing to tell you that XIT is also on. Would it be a simple firmware mod to make the lamp flash on and off when XIT is active? 73 Tom G3OLB __ 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] ERR PL1 has shown up
Jim, Don't know if you have solved this problem yet but it was one of the symptoms I was getting, amongst a lot of others, back a few months ago. Turned out to be corrosion on the front panel connectors - my shack gets cold and damp in the winter. I removed the front panel assembly, cleaned the connector contacts with some switch cleaner fluid, applied some electrical contact lubricant called 'Contralube', re-assembled and all has been well since then. An added advantage is that the lubricant stuff allows the connectors to mate and un-mate (?) much more easily and I no longer need a screw-driver/lever, in the slot provided, to remove the front panel assembly. 73 Tom G3OLB Date: Mon, 1 Aug 2011 21:11:09 -0400 From: Jim Spears n...@cox.net Subject: [Elecraft] [K3] ERR PL1 has shown up To: elecraft@mailman.qth.net Cc: 'Gary Surrency' supp...@elecraft.com Message-ID: 003801cc50b1$104da820$30e8f860$@net Content-Type: text/plain; charset=us-ascii Yesterday I got an ERR PL1 when changing to 12m. I did a VCO CAL and it went away. This evening, I changed to 20m and got ERR PL1 again. I did a VCO CAL and it did not go away but showed up with an E 000129 ERR VCO. Since I am on east coast, many Elecrafters will see this before the support elves come on line Tuesday morning. suggestions? Jim/N1NK __ 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] Portable Wire Antenna Weight
A warning.be careful using a golf ball to put your antenna over a tree. I did the same thing about 15 years ago, except I drilled the golf ball and tied braided nylon cord through it. Inevitably the ball got stuck in the 'V' of a branch so I heaved on it, winding the cord round a piece of wood to give me more grip on it. That cord must have had a breaking strain of more than 300lbs and when the ball broke free, I literally shot myself in the foot, breaking several bones. It could have been even nastier if it had hit me about 3' higher! I can still hear the staff at the Accident Emergency Department sniggering when I told them I had been shot by a golf ball. My XYL had to drive me to work for the next 6 weeks while my foot was plastered up, bless her! These days I use a catapult and a lead weight which could be even more dangerous, but I use monofilament and am very, very careful if I have to pull the line back. Do it slowly and, with luck, the weight won't wind the line round a branch. 73 Tom G3OLB __ 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] Multiple error messages on start up.
John, I had similar problems for a long while which were all solved by removing the front panel, cleaning the 4 connectors and applying some electrical lubricant (Contralube) and re-assembling. Good luck! Tom G3OLB Message: 35 Date: Wed, 4 May 2011 22:28:29 -0400 From: John Shadle sha...@katzenfisch.com Subject: [Elecraft] [K3] multiple error messages on start-up To: elecraft@mailman.qth.net Message-ID: banlktikakw3my_b1gw1cfqtvm2b+gym...@mail.gmail.com Content-Type: text/plain; charset=ISO-8859-1 This is odd. Just finished a QSO with J5UAP on 30m this evening and then switched over to 40m to pursue some more DX. When I got there, I wasn't able to get any power out. It showed 0.0W when I tried to TUNE (I have a remote tuner at the base of my vertical). I power cycled the radio and then received a multitude of errors upon power-up (including ERR IO1 and ERR PL1 among others). In addition to that, the fans were running (I have the 100w amp as well). I turned the radio off for a minute or so, and now the error has resolved. I've had the issue of the no power out when TUNE-ing in the past, but never this before. Help! -john W4PAH K3 #110 __ 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] Sudden loss of output power
Mike, This was one of the many different symptoms I had as a result of bad contacts on the 4 front panel connectors. Remove the front panel, not forgetting to take out that 3D block screw on the left hand side, give the connectors a good clean and apply a thin film of 'Contralube' or some similar electrical lubricant and replace. 73 Tom G3OLB My K3 has recently developed a fault that causes a sudden loss of output power. ..Mike, M0PRL / VP8DMH __ 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] K£ - Multiple faults
I'm posting some detail of this long saga of faults on my K3 and the eventual solution, in the hope that it may help others with similar problems. My K3/100 S/No 01434 is just about 3 years old now and about a year ago intermittently started showing faults. At switch-on 'ERR BP1', 'ERR LPF' and a long string of error messages would be displayed as the MENU button was pushed. It would then return to normal operation except power output was limited to 12 watts. After a month or two, additional faults began to occur, 'HI RFI' displayed with no antenna connected and before transmitting. Internal relay clicking in time with keying, even when no separate receive antenna connected. High SWR indication on K3 bar-graph even with 50 ohm dummy load and perfect SWR on external meter. Transmit function inhibited. Uncalled for output power reduction from 100 W to 10 W during transmission. 'ERR PL2' (PLL1 *00, PLL2 *00) and neither Rx working. 'ERR KEY'. Power on/off button not working. Tx gain calibration showing gain errors and slow to reach 10 W and 100W. 'HI TEMP' displayed at switch-on and before transmitting. 'ERR I01' and no RF output when keyed. All these faults occurred regularly at different times over the last 12 months, interspersed with periods of no faults. The rig became quite unreliable, failing in the middle of a contest several times, and finally becoming virtually unusable. During this time I dis-assembled the rig, removing all the sub-modules from the main RF board, cleaned the connectors and re-assembled, 3 or 4 times. The fault appeared to be temperature dependant so I used a freezer aerosol on each section of each board without being able to replicate the faults. Putting the whole rig in the 'fridge at -1C caused the faults to re-appear (had to move the beer to make room for it). All calibration procedures were repeated as per the handbook. A month ago, John G3PQA kindly loaned me his K3 front panel along with some connector lubricant called Contralube 770. This was installed and the rig used for 2 or 3 weeks with no repetition of the faults even at low temperatures. My front panel has now been re-installed, using the connector lubricant on the 4 connectors and for about 2 weeks there has been no repetition of the problems. My shack is in an insulated room in a stable block and the temperature does get below zero at times and I guess the humidity must get high as well. The 4 front panel connectors on my K3 are not gold flashed like some of the other modules and I can only assume that I had a connector pin oxidisation problem. So if anyone else has a series of faults like this, remove the front panel, clean the connectors and apply some of this special connector lubricant. An added advantage is that the front panel can now be removed using just finger and thumb, no screwdriver needed as a lever. I have to say that throughout this saga, Elecraft post-warranty support has been superb, suuplying replacement modules and plenty of advice from Gary Surrency. Wayne even wrote some special FW with extra timing delays built in to try and resolve the issues. Despite all this, I remain convinced that the K3 is the best transceiver on the market. 73 Tom G3OLB __ 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: Voice Fast Monitor
As the person, or one of them, who asked for the Voice Tx Fast Monitor facility which has been included in V.4.22, can I say 'thanks' to Wayne Lyle for this new feature? It allows sidetone monitoring of transmitted audio without the somewhat disconcerting delay, albeit without hearing any compression. If you want to hear the level of compression, a touch of one of the mic controls while you are transmitting changes the sidetone over to monitoring the true transmitted audio. Also the APF is going to be great for pulling out those weak topband signals. All I need now is a fix so the K3 will operate at temperatures below 15C, then I can get rid of the 100 watt tubular heater which burns continually underneath it! 73 Tom G3OLB __ 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] Preferred Topband transceiver
Gerry, This morning was an example of the great advantage of the K3's phase-locked diversity receiver. During my contact with ZL3IX, Greg was peaking 569 and dropping to 449 in rapid QSB on both my vertical and my west beverage, but not in the same phase. When he was down on one antenna, he was up on the other. Using both receivers in diversity reception, he was a solid 569 continually. The diversity receiver makes a big difference. 73 Tom G3OLB (Copied to Elecraft Reflector) VE6LB wrote: I'd like to understand what makes the K3 hear better. What they call roofing filters are simple 9 mhz Crystal filter know as 1st IF in older radios. DSP filtering has been around now for years and have certainly evolved in all radios. Can anyone quote side by side experiences with other modern radios (like an FT-5000) where the K3 was hearing weak 160 signals and the other radio was not. Gerry VE6LB who may be in the market __ 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) with FL2100B amp
Chuck, I don't think you're right - the K3 'Key Out' is spec'd 200V @ 5A. The FL2100 'RY' relay control switches 12V @ 200mA only. 73 Tom G3OLB AE4CW wrote: However, you will need an interface to key the amp from the K3 as the amp keying voltage is not compatible with the K3. I used a simple 12V reed relay powered from the K3 12V RCA jack. __ 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) with FL2100B amp
I stand corrected - hadn't realised the 'Z' was different. 73 Tom G3OLB - Original Message - From: Tom W8JI w...@w8ji.com The FL2100 and 2100B are negative low voltage. The FL2100Z is positive low voltage with a huge current spike. __ 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] MH2 Microphone PTT button issue
There's an even simpler fix for an aching finger due to a stiff PTT button on the MH2 mic - push the XMIT button and push it again when you finish talking. 73 Tom G3OLB __ 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: Memory Recall
Thanks Art, that was the problem. I had tried to set up memory hopping between bands, which unlike my TS850, the K3 won't do. WB8ENE wrote: Sounds like you have a * in the first position of the name for that memory location. Knut AB2TC - you have to push the MV button a second time if VFO A knob is used to select memory number, but not if you use the number keys. __ 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 Memory Recall
Can anyone throw any light on the following way in which my K3 has always behaved? Using memories 00 - 09 as if they were band switches: Config: Mem 0-9 : Band Sel Memories 00 - 09 are each set up on a frequency in each band using the VM button. Tap MV button, then select a memory either by rotating VFO A or by tapping buttons 0 - 9, then tap MV again. Band is selected correctly but VFO A is locked up and won't change frequency until another button is pushed (e.g. Freq Ent, Fine or Rate) It's not a major problem but am I doing something wrong? 73 Tom G3OLB K3 S/N: 01434 with FW v. 3.97 __ 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 Memory Recall
No serial cable connected Mike. Hi Tom: I troubleshoot peculiar K3 occurrences in this order. 1. Operator error 2. Computer error 3. K3 error It sounds like item 1 is ok. Move to item 2. Turn off any logging program or better yet disconnect the serial cable. 73, Mike K2MK __ 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] (Elecraft K3) KDVR
Re-the current thread on using the KDVR for checking transmitted audio: When using SSB I like to monitor my audio sidetone in my phones, probably because, like most hams, I like the sound of my own voice! I recognise that this may not be a true reproduction of the outgoing signal, but it does give me an idea of the level of residual back ground noise from fans, dog barking, wife yelling at me to get and do something useful and so on. That way I can make adjustments to the mike gain and compressor gain if neccessary. The trouble is that the K3 produces a slight processing delay between my speech and the sidetone, which I find most disconcerting. I usually end up using my old TS-850 for 'phone instead of the K3 because of this. I've mentioned this before and I believe a modification may be on Lyle's list, (somewhere near the bottom). 73 Tom G3OLB __ 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 - 'High Isolation Headphones'
Someone here made some recommendations for noise-cancelling headphones. For several years, on long-haul flights, I've been using the Fujikon Pro-Luxe NC-4 which are excellent and much lower cost than others - I paid around GBP 22 (about $35). I bought mine from Radioworld here in UK. Can't really imagine why anyone would need noise-cancelling phones for ham operation, unless the rig is in the living room I guess. 73 Tom G3OLB __ 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 Monitor Delay
Thanks to all those who have posted interesting responses on my MON delay question. Just to make it clear, this was not a complaint, just a minor irritation as I use CW 99% of the time anyway and for CW the K3 is the best! I look forward to Lyle's possible 'pre' or 'post' processing selection for MON audio. 73 Tom G3OLB __ 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 Audio Monitor Delay
Lyle, Thanks for the explanation. As with most hams, I like the sound of my own voice (!) and listening to a delayed version of my own voice on phones during a long contest, I find quite wearing. Would it be possible to menu-select the monitor output prior to any of the processing you mention? I've reverted to using my dear old TS-850 for phone operation because of this problem. 73 Tom G3OLB Lyle wrote: The delay is due to: audio input anti-aliasing filter in the A to D, TX AF filtering, phase shift network, interpolation filter (conversion from 12 kHz sampling rate to 48 kHz sampling rate) , post-IF clipper filter, decimation filter (conversion from 48 kHz sampling rate to 12 kHz sampling rate), reconstruction filter (part of the D to A). We thought it best to allow you to hear the effects of the IF signal processing, so delays are unavoidable. Most people do not notice as the K3 uses filters optimized to minimize delays. Note that Tx EQ adds zero additional delay. Like the Rx EQ, the Tx EQ just adds more constraints to the AF FIR filter generator. There may be opportunity to further redice delays by combining some filter functions. One of the items on my list of background tasks :-) __ 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 Audio monitor delay
Does anyone else find the processing delay in the sidetone monitor most disconcerting when using SSB? 73 Tom G3OLB __ 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] Yamaha CM500
Shipping of the Yamaha CM500 headset may be free in US but they want $50 to ship to UK. Anyone know if there is a UK stockist? Tom G3OLB On Wednesday 09 December 2009 02:37:34 pm Merv Schweigert wrote: As someone posted before, they are here for 38.00 free shipping, they are not a stocked item but if you order they say about a week to ship them. Cheapest I have seen so far. www.bhphotovideo.com http://www.bhphotovideo.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
[Elecraft] K3 switch customisation
N6 KR said: In a recent discussion about SPLIT, many proposals were made (too many :) Others argued for no change. With this in mind, we've created a new switch macro feature Blimey Wayne, is there no limit to what this box will do? 73 Tom G3OLB __ 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 - Channel hopping across bands
I'm sure that Wayne/Lyle are not looking for additions to the wish-list at this late stage, however.my dear old TS850 has the ability to scan or frequency-hop across a number of channels on all bands. I find this a very useful feature when I am in my shack working on something else as I can keep an ear on all the HF bands to see if there is any activity. The TS-850 is set to hop from 1830 to 3525 to 7025 to 10120 to 14025 and so on. The K3 can only hop between channels in the same band. Anyone else find this a useful feature? 73 Tom G3OLB p.s. The diversity capability is just magic on top-band! __ 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] Elecraft Support
I would, once again, like to applaud Gary Surrency at Elecraft K3 Support for his patience and speed of response in helping me install a firmware fix yesterday. The level of technical support provided by Elecraft is superb. 73 Tom G3OLB __ 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] New to the Forum
How did you get the solder blobs out of the living room carpet Ron? 73 Tom G3OLB Ron AC7AC wrote: Not wanting to hide out in a corner, I used a 2x3' drafting board, put it on my lap in the living room with the soldering station on a TV tray, and built my K2 while chatting with the XYL, listening to music, and even watching some TV. __ 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] K3/100 kit
If you don't like magnetic screw drivers, use a small piece of 'Blue Tack' on the tip of the driver to hold your screw. I always keep some of this in my tool box. 73 Tom G3OLB __ 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 - Faulty VFO B encoder
Greg It's a faulty encoder - I had two of them go bad with these same symptoms. Talk to the guys at supp...@elecraft.com and they will replace it. 73 Tom G3OLB I have a K3 SN 1553 When I first power up the K3 the VFO B works correctly. After about 1 minute it starts to get eratic and then stops working completly. I have re-loaded the latest (non Beta) Firmware. I checked to to see that the VFO B encoder is properly seated to the connector. Seems like a temperature related problem. FP temp is normal 27 C Has anyone seen a similar problem or have any hints where to start troubleshooting? Thanks,? Greg WA1JXR __ 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] Relay clicking
Isn't there a protection relay on auxiliary antenna input to protect against excessive RF getting back in? 73 Tom G3OLB Steve, No relay for either keying or T/R switching - it is all electronic. 73, Don W3FPR __ 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: 60 metre coverage in UK
I think this subject has been covered before - so apologies for missing the reply: The UK allocated 60 metre channels extend down to 5.2585 MHz but my K3 will not transmit below 5.330 MHz and VFO B displays 'END'. Is there a fix? Tom G3OLB___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] K3: Loss of VFO B Control
Rick Make sure you remove the screw from the 2D fastner at the lower right hand side of the panel - see Assembly Manual page 37, Fig 51. Having done it many times, I'm now an expert at removing/replacing the front panel and it only take a few minutes! 73 Tom G3OLB Rick, N6CY, asked: ...has anyone come up with a better solution for separating the front panel from the main radio, being kind to the paint job? I haven't ding'ed it yet after four attach/remove cycles, but the two insert screwdriver here slots just aren't cutting it for me! ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] K3 Loss of VFO B control
Jerry I have had 2 failed encoders and am waiting for the second replacement. In my case, it was not due to any shorts occurring although I believe Elecraft are now advising the fitting of an adhesive rubber insulating pad behind VFO B encoder. Looks like they had a bad batch from the manufacturer, Bourns. Tom G3OLB I had a bad encoder assembly in the K3 I assembled recently - I proved it by swapping A and B encoders and observing the problem switch with it. Elecraft shipped me a new one which fixed it (after much sweat replacing it - that front panel removal is a PITA). I suspect Elecraft is not checking the encoders before shipping them to us. Jerry W4UK ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] K3: Removing front panel
But DO remember to remove the screw(s) from the 2D connector on lower LHS. Tom G3OLB It would be interesting to me to see somebody prying off the front panel assembly in video form. It's an easy job Brian. Just use a thin screwdriver placed as indicated in the instructions. Go back and forth between the slots on each side, prying it loose a little bit further each time. The connector pins are clearly visible so you can see the progress of the panel coming off. 3-4X on each slot and she's loose. ___ 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] Elecraft antennas in trees
Another warning! A few years ago I used a catapult and a drilled golf ball with some braided nylon line over an oak tree. When it became stuck in a branch, I wound the line round a piece of wood and gave it my full weight to release it. The end result? I literally shot myself in the foot, breaking several small bones and was on crutches for 4 weeks. The braided line probably had a breaking strain of at least 300lb so I had devised a pretty effective self-destruction machine. I'm just glad it didn't hit me a few feet higher! The funniest part was trying to explain to the guy in the Accident Emergency Department how I broke my foot with a golf ball and then listening to his sniggers as he told the story to his colleagues. These days I use a lead fishing weight with some fluorescent mono-filament fishing line. I can get it to 60 feet plus, but if it gets stuck, I pull back very, very slowly to prevent it winding around a branch. Be careful! Tom G3OLB ___ 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] Band Button
Thanks all for a good laugh this Sunday morning on the subject of frequency/wavelength units! 73 Tom G3OLB (patiently waiting) ___ 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
