[Elecraft] K2#4155 speaker/audio
Fellow Elecrafters: I need help with this one. During the entire construction process everything went fine until the very last step; I wired up the internal speaker, powered on and the audio sounded horrible. Very raspy with cw signals having a hollow, high pitched ring to them. 1. Headphones sound fine. 2. External speaker sounds good. 3. Loosening or tightening the speaker screws changes the sound but still distorted. I contacted Gary. He suggested checking speaker installation and external speaker jack wiring. All okay there. I removed the K2 speaker and replaced it with the internal speaker from my K1. It sounds good. So I let Gary know and Scott mailed me a replacement speaker. I wire it up and it sounds the same as the first one. What's going on here? For the last several days I've been checking and rechecking. Everything looks okay. Headphones and external speaker okay. At present I have the K1 speaker back in and it's okay. The K1 is 8 ohm, .5 watt and the external speaker is also 8 ohm. Can this mean something? It does not seem possible to get two bad speakers. Suggestions will be appreciated. Joe K4NVJ K1#764 K2#4155 ___ 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] tone
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. Yes, I am currently working the WAE contest and hearing a fair number of T6 signals. Dunno if it is on purpose or accidental. Some contesters/DXers seem to want their signal to stand out, even if their tone stinks. I think they're misguided, but what do I know? Jim Brown K9YC this tone question may not be the transmitter in many cases. I was listeing to WAE last night and noticed not just Europeans, but U.S. signals, but from the north, had odd tones. some were from stations I know who have clean-as-a-whistle signals. I think there was aurora even if not enough to see. 73, Fred kt5x ___ 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] tone
On Sun, 15 Aug 2004 08:06:33 -0600, Indy wrote: this tone question may not be the transmitter in many cases. I heard on local stations that I am sure were ground wave and strong. I also heard it on skip that was stable and VERY unlikely to have been affected by auroral activity. Jim ___ 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#4155 speaker/audio
I need help with this one. During the entire construction process everything went fine until the very last step; I wired up the internal speaker, powered on and the audio sounded horrible. Very raspy with cw signals having a hollow, high pitched ring to them. .. The magnet is very heavy in the K2 speaker, and the frame often gets distorted (bent) as a result. I had terrible audio and had to straighten the speakers in two of my radios. It's easy to do, no tools required. Now they sound great! Lyle KK7P ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
RE: [Elecraft] K2#4155 speaker/audio
The magnet is very heavy in the K2 speaker, and the frame often gets distorted (bent) as a result. Let me clarify. The speaker frame can get distorted in shipping while not installed in the radio. I've never had a repeat problem after correcting the initial distortion. Lyle KK7P ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
RE: [Elecraft] K2#4155 speaker/audio
Let me clarify. The speaker frame can get distorted in shipping while not installed in the radio. I've never had a repeat problem after correcting the initial distortion. To check for a twisted speaker, carefully move the cone in and out by hand. Just push straight down on it gently, and then let go. The cone should move perceptibly, but the voice coil should not rub. K3UJ ___ 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] Transmit power control problem
Hi there friends, Further to my former message asking for your kelp, forgot to tell you that I am having the problem on the bare basic K2, no KPA100 or KAT100 installed, so those two options have nothing to do with my present problem. When making the K2ATOBKT mods, I installed two 12 pF capacitors across C21 and C23 so I had to realign reception and transmission and it's been then when I have become aware that I could not control the transmission power output and that is what's keeping me worried. Not the Hi Cur message, though this can also be part of the problem. Thanks for all the feedback I am already receiving. 73 Pauli, EA3BLQ K2/100 # 1044 [EMAIL PROTECTED] [EMAIL PROTECTED] URL: www.qsl.net/ea3blq ___ 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] KX-1, Picnic Table Portable and TVI
Is anyone experiencing TVI. Recently I went camping in an RV park where most of the TV reception was via the Winguard amplified TV antenna, not Satellite. This is a broadband receiver amp for TVs and is built into the antenna. When operating 40 and 30 meters CW from a nearby picnic table into a Buddipole with close to 1:1 SWR I could see my own TV inside the motor home 15 feet away lightly flashing as I keyed. The problem was somewhat less with internal batteries indicating 1.5 watts but the dim flash was still there. Park folks not happy, me not happy, what is your experience?? Bill K6ACJ ___ 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] Transmit power control problem
Pauli, Let me restate your symptoms first so you can ignore my answer if no match -- 1). You have over 10 watts of actual power generated into your dummy load. 2). The K2 display shows only a small amount of power output 3). You are getting excessive current draw (HI CUR). If ALL that is correct, the problem is in the VRFDET signal path somewhere. The MPU is not sensing RF being generated and tries to increase the power. Check the components in the RF Output Detector (schematic sheet 3 lower right corner). After that simple voltage divider and diode detector, the signal finds its way to the control board and is present at pin 10 of the AUX I/O header and then goes to pin 2 of U6 (there may be an 820 ohm resistor in series before hitting the MPU pin, depends on your level of the Control Board, the early ones did not have the resistor). Also, if you did the keyclick mod, look carefully at that - it will influence the ALC action, but will not likely produce the symptoms you report. 73, Don W3FPR - Original Message - After having solved my recent Info 80 trouble and since I had upgraded my KPA100 and all the F/W, my K2's configuration got quite disarranged, I decided to implement all the mods to upgrade my K2 rev A to a K2 rev B, before getting into the configuring and aligning task (I had installed some of the mods but not all) so I purchased the K2ATOBKT kit and did a lot of disoldering and soldering. All has run as per the manual but (Why there's always a but? Is it Murphy's Law?) now I have got a transmit power control problem. When I key down (TUNE) the K2 and independently of the value I set in the POWER Control (be it 0.50, 2.00, 5.00 or 10.00 watts) I always get the Hi Cur message and the internal wattmeter drops to 0.3 watts, but the truth is that the power transmitted into a very well calibrated 50 Ohm Dummy Load and RF Power Meter (the QRP RF-Power Meter PM-1300a by SSB-Electronics) always, and I mean always with independence of the K2 POWER Control, reads between 10-14 watts depending of the frequency. Have made the resistance checkings and they are OK ___ 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] K2#4155 speaker/audio
Lyle, You da' man. I thought I might have over tightened the screws and bent the frame but it was perfectly straight. When I emailed Gary, one of the things he suggested was to do a little *gentle* prying between the magnet and the frame. That went right over my head. Your mentioning the weight of the magnet lit the light bulb over my head. I never even noticed that the strut with the terminals was caved in. Raising that just a little and now it sounds normal. Thanks, Lyle, I really appreciate your help. You made my day. I've been worrying with this for days. 73, Joe K4NVJ ___ 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] KX-1, Picnic Table Portable and TVI
Broadband TV amplifiers are darn near impossible to deal with. Your rig may be clean as a whistle, but when the RF from your signal down in the HF range hits that amplifier it overloads the first stage producing garbage across the spectrum, including all the TV channels up through UHF. Even TV's not connected to it may get TVI from the junk re-radiated by the amplifier through the antenna. The right solution is a high-pass filter at the broadband amplifier input to block the HF signal from your rig, and perhaps proper shielding if it isn't already. That's not a practical solution in cases like yours in the RV park. The only other solution is to reduce the amount of RF it picks up. You do that by moving your transmit antenna away from the TV antenna and/or reducing power. Ron AC7AC -Original Message- Is anyone experiencing TVI. Recently I went camping in an RV park where most of the TV reception was via the Winguard amplified TV antenna, not Satellite. This is a broadband receiver amp for TVs and is built into the antenna. When operating 40 and 30 meters CW from a nearby picnic table into a Buddipole with close to 1:1 SWR I could see my own TV inside the motor home 15 feet away lightly flashing as I keyed. The problem was somewhat less with internal batteries indicating 1.5 watts but the dim flash was still there. Park folks not happy, me not happy, what is your experience?? Bill K6ACJ ___ 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] FS:Elecraft EC-2 Enclosure and ETS15 Tilt Stand
I have two EC-2 enclosures complete with ETS15 1.5 tilt stands for sale. All are NEW with all hardware packs and instructions. 55.00 USD each plus $5.00 USD shipping anywhere in North America. I accept PayPal. Please contact me off the reflector if interested (with the word Elecraft in the subject line -- otherwise your e-mail may be blocked by my SPAM filter) Regards Dave VE6DRW ___ 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#4155 speaker/audio
Used to get this problem with speaker distortion on occasion when repairing TVs in the early 1960's, usually at a remote farmhouse three days camel ride from base. Found the easiest method was to remove the speaker and stand it on the magnet with the cone facing you. Carefully work the cone with both hands to equalise the pressure, backwards and forwards towards the magnet feeling for the voice coil rubbing. If there was a problem it was sometimes possible to warp the speaker frame to re-center the voice coil as a temporary fix. As a matter of procedure the speaker was replaced at a later date when a spare became available as the problem could re-occur. Unlike the problem with the Elecraft speakers where it looks like the damage may be caused by rough handling in transit, these speakers failed after a period in service possibly due to excessive temperature or humidity. Elecraft could have to review the packing of these speakers for transit if the amount of damaged units becomes a problem. Bob, G3VVT K2 #4168 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] WA3WSJ: Covered Bridges of Berks County Tour Prep.
Hello all, Well, today I had some spare time so I put the maps in the trunk and tried to find the five covered bridges in Berks County here in Pennsylvania. I left at noon and returned home around 4:30pm. I found all the bridges and took some great pictures of the bridges and hex signs on them. This was a scouting mission so I know where all the bridges are to activate them September 4-5. Look for me to activate three covered bridges on Saturday, 4th and two on Sunday the 5th of September. You don't want to miss this certificate that will have all the bridges on it! If you work me at all the bridges, the certificate is yours. Most of the covered bridges are out in the countryside so it will be nice to activate them. Check my web site for more details. Hope to work you soon! 72/73, Edward R. Breneiser, WA3WSJ mailto:[EMAIL PROTECTED] ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] Elecraft CW Net Report Aug 15th, 2004
ECN/1 was run on 14050 kHz this evening amidst a number of contesters from all over the place. Other than trying to pick the wheat from the chaff I was troubled by a hot radio shack and sticky skin. Kept my sending to a less than stellar performance :( But none the less there were a few folks willing to put up with me. Starting with Tom giving me the report that 14050 was as good as it was going to get I shoe horned in and commenced calling CQ ECN. Our ND connection, W0CZ, came along and may be waiting for the Elecraft WAS folks willing to attempt contact on ECN/2 later today. On to the list: N0SS - Tom - MO - K2 - 008 W0CZ - Ken - ND - K2 - 1031 K2HYD - Ray - VA - KX1 - 608 AB9V - Mike - IN - KX1 - 718 W0NTA - Dick - CO - KX1 - 281 W6KY - Art - CA - K1 - 141 K5VJZ - Tom - LA - K2 - 4279 AI4BJ - Mark - KY - K2 - 3862 AG4ND - Forrest - TN - K2/100 - 2827 W0QQS - Bruce - MN - K2 - 3646 K1EV - Bill - CT - K2 - 2152 As always errors will be reported and repaired upon receipt. 73, Kevin. KD5ONS (Net Control Operator 5th Class) ___ 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] ECN
Anyone hear the ECN? If so what frequency. Can't seem to find them. 73 Jim W4ATK ___ 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] Elecraft CW Net Report Aug 15th, 2004
All, I had just worked a DL in the WAE contest with my K1-2 on 14052. Went down to 14050 for the ECN. Could not get thru to Kevin in New Mexico next door from CA, but that's 20 meters. TNX to TOM, N0SS for the relayTom was 599 from MO.. Made about 20 European QSO's today with the K1 B4 and after the ECN Tnx for ECN today and just checked in on 40. CU next weekend. 73 es QNJ? Art W6KY K1-2 K1-4 Kevin Rock [EMAIL PROTECTED] wrote: ECN/1 was run on 14050 kHz this evening amidst a number of contesters from all over the place. Other than trying to pick the wheat from the chaff I was troubled by a hot radio shack and sticky skin. Kept my sending to a less than stellar performance :( But none the less there were a few folks willing to put up with me. Starting with Tom giving me the report that 14050 was as good as it was going to get I shoe horned in and commenced calling CQ ECN. Our ND connection, W0CZ, came along and may be waiting for the Elecraft WAS folks willing to attempt contact on ECN/2 later today. On to the list: N0SS - Tom - MO - K2 - 008 W0CZ - Ken - ND - K2 - 1031 K2HYD - Ray - VA - KX1 - 608 AB9V - Mike - IN - KX1 - 718 W0NTA - Dick - CO - KX1 - 281 W6KY - Art - CA - K1 - 141 K5VJZ - Tom - LA - K2 - 4279 AI4BJ - Mark - KY - K2 - 3862 AG4ND - Forrest - TN - K2/100 - 2827 W0QQS - Bruce - MN - K2 - 3646 K1EV - Bill - CT - K2 - 2152 As always errors will be reported and repaired upon receipt. 73, Kevin. KD5ONS (Net Control Operator 5th Class) ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] QUESTION: W4OP receiver
I was just looking at teh pics on the Elecraft pages and saw W4OP's receiver ( http://www.elecraft.com/PictureGallery/NewPics2/w4op_rx_ec2.jpg ) and was wondering is this person is around and would be willing to field some questions about it. kb3ipe dt . ___ 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 CW Net errata
AE7RW should be named Rich not Ric. Sorry, I have no idea where the H went. You are corrected in the database and my log. This is for public consumption. Kevin. KD5ONS ___ 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] Current requirements for KPA100?
During a recent contest, I received a report of poor signal quality on my CW signal on 80m. I've run some tests and find that on 80m and 160m, there's a distinct hum on the signal when running over about 80 watts. I've also noticed that the current used seems to jump in discrete steps as I increase the power level. It could be that this hum is present on the power supply at higher current levels. On 160m, the rig pegs the scale on my power supply ammeter when running full power. Do the current requirements of the KPA100 increase on these bands? And what would cause the discrete steps in current consumption at the higher power levels? We're talking a jump in current about every 10 watts or so. Prior to the contest, I performed the KPA100 modifications for high SWR operation and installed the new firmware. I've noticed that the heat sink is running noticeably hotter than before. This while transmitting into a 50 ohm dummy load. Any suggestions would be appreciated. The rig appears to operate just fine, I'm just a little concerned about the signal quality and the extra heat. Bill Coleman, AA4LR, PP-ASELMail: [EMAIL PROTECTED] Quote: Not within a thousand years will man ever fly! -- Wilbur Wright, 1901 ___ 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] Elecraft CW Net Report Aug 15th, 2004
On Sun, 15 Aug 2004 19:25:18 -0700 (PDT), Art-W6KY wrote: I had just worked a DL in the WAE contest with my K1-2 on 14052. My K2 at 5 watts into dipoles made 158 Q's in 27 EU countries. Only worked about 7 hours. Could have done a lot better if there had been more EU stations and contries active. I was able to work all the contries I heard on 40, 20, and 15, and almost all of the stations (although in some cases I needed to wait an hour or two for the band to be more open to that station than I would have with more power). Jim K9YC ___ 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] Need some help --- a plea from 'Down Under'
Scenario:- K2 / 4313 Alignment and Test Part #1. 1) Last item on page 42 --- everything per the manusl except the Pre-amp annunciator is also displayed. Pre-amp and Attenuator toggle OK but Pre-amp annunciator always present upon 'switch on' regardless of setting at 'switch off' --- is this a problem? 2) All OK through page 46 up to 'Audio Amplifier and Tone Generator Test' --- NO SIDE TONE!! --- referred to 'Appendix E' page 12 --- could not detect any signal at pin 25 of U6. Looking for advice on the least destructive way to proceed. TIA, Bill Scovell / VK4SQ ___ 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
