Re: [Elecraft] [XG2) Won't oscillate on 40m
It could be the crystal but that's really rare. The first thing I'd check is the battery. If it's low the oscillator will stop working and it might be marginal so the lowest-activity crystal stops first - in your case perhaps the 40 meter crystal. Ron AC7AC -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Chip Stratton Sent: Wednesday, July 20, 2011 7:01 PM To: Elecraft@mailman.qth.net Subject: [Elecraft] [XG2) Won't oscillate on 40m Just got an XG2 of unknown provenance. Appears to have been carefully assembled, and puts out a good signal on 80 and 20 meters, but 40 meters output is nonexistent. The band-switch is fine, so I suspect either the coupling capacitor before the crystal, or the crystal itself is bad. Just for my edification, would crystal failure be an expected result if someone transmits into the XG2? I'm trying to understand why only the one band would go dead. Thanks Chip AE5KA __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Resistance Checks on pg. 45 (K3)
Yes, you are fine, Shane. Note that step says, Your DMM may indicate the value is so high it is out of the range of the instrument and as it does when in ohms mode and the probes are not touching anything. So it's reading what your Fluke reads when the leads are not touching anything. All is good. That check is simply to ensure there isn't a short circuit across those connections. In that case your Fluke would read some value much less than 35K (35,000) ohms. The same is true of the check on the following page, although there the circuits will show some resistance, hence values to look for. When doing these sort of checks, it's often valuable to put your meter in manual ranging, so it doesn't keep cycling across resistance ranges. That can produce very confusing readings. Have fun! Ron AC7AC -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Shane Sent: Wednesday, July 20, 2011 6:27 PM To: elecraft@mailman.qth.net Subject: [Elecraft] Resistance Checks on pg. 45 (K3) Hi, I hope this is the right place for this post, although I'm sure it's not because its kind of a dumb question. I've been assembling a K3 and I'm up to the point for doing resistance checks in the assembly manual on pg. 44. And yet I know nothing about resistance checks (or electronics). I'm worried about the 1st check where I'm supposed to check the 12VDC IN connectors on the rear panel. I bought a Fluke 117 DMM, switched it to the Ohm sign, its set to auto ranging, then I put the black pin in the black 12V connecter of the K3, put red on red (made sure the pins are touching metal in the connectors) and I'm not seeing anything (just 0L on the display of my DMM). And I've also stepped through the manual range settings as well, but to no avail. However the following checks on pg. 45 showed me some numbers. I can't tell if they're good numbers yet as I'm trying to figure out the decimal places and if they match what the manual says, but at least there I'm seeing numbers. So I was afraid to plug it in and do the initial power check. Can anyone comment? Much appreciated. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] KPA500 Temperature
Sois anyone monitoring the peak temperature on their KPA500? I'm kind of doing that, and it seems like mine gets up to the mid 50's C before it more or less stabilizes. It's kind of neat how the fan speeds up as needed, although I really can't hear it that well. Compared to other amps I've used, this one is S I L E N T! I had some concern that just one fan would move enough air to keep the temperature down, but I think it does the job appropriately. What's neat is you can override the auto feature for fan speed with a menu setting. I suppose that might be necessary if you were running RTTY or something. If I make a relatively long transmission (on CW), the temperature on the amp goes up into the mid 50's C. I assume that is normal. The fan speeds up sufficiently to keep it at, or near, that temperature as far as I can tell at this point. As soon as I stop transmitting, the temperature drops like a rock! I think the fan keeps going for a while to help accomplish that. Per the manual, the heatsink temperature rating is something like 90 C., so I'm not even close to testing that. As I've said before, I'm not very smart about amps, but I assume a lot of amps run temperatures much higher than this one does. Besides, since it seems to, more or less, level out in the mid 50's, I assume that is more than reasonable. Hopefully I'm right about that. I have adjusted my drive to about 27 watts from the K3. That gives me 480 watts plus out of the amp, according to the amp's internal wattmeter. My objective is to run this thing somewhat conservatively, and hopefully that's what I'm doing. I can easily get 600 watts out of the amp, but why do it? I'm getting an S unit and a half, more or less, improvement by running the amp. 600 watts would be a negligible increase over that. Right now the amp is showing about 35 C. while it is idle. That's the same that my K3 shows when it is idle. On a somewhat extended transmission my K3 PA temp goes up to the mid 40's C, and the amp goes into the mid 50's. That seems reasonable intuitively, but I'd be very interested to hear whether or not that's what others are experiencing. I also assume that if I were running RTTY, or some other intensive mode, I would need to back off of the power on the amp, just as I do with the K3. I don't operate that mode very often, but I know it's hard on PA's. The manual doesn't say much about that--it only says 500 watts output without indicating any difference by mode. Most other amps I see have a reduced power rating for RTTY, etc. For now, I'll assume that's an oversight. The main thing I haven't tested yet is the amp's performance on 6 meters. My operation on that band is pretty casual, but it was a major factor in my decision to make the investment. 6 meters can be a bunch of fun when conditions are right. I think making this amp 6 meters capable was a very smart move. I have one question at this point--when I switch my K3 to 30 meters the amp recognizes that fact, and displays that band. However, there is no indication that the amp works on 30 meters, and there is not an optional band switch for 30 meters--probably, at a minimum, because that band is limited to 200 watts. I haven't even tapped the key on that band with the amp on. So, my question is whether or not the amp is 30 meters capable, even though it would probably violate the power limitation rule. Well, I'm obviously having fun with the amp, but I'll probably have it turned off much of the time. Amps like this give you a nice boost, but I prefer to go a cappela for the most part. I've never felt amp usage should be automatic. Dave W7AQK === Email scanned by PC Tools - No viruses or spyware found. (Email Guard: 7.0.0.18, Virus/Spyware Database: 6.17960) http://www.pctools.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] P3 alternating blinking red LEDs
Two LEDs inside my P3 are blinking, alternating, and my P3 shows no signals. Ideas? --Andrew, NV1B __ 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] KPA500 Temperature
I have one question at this point--when I switch my K3 to 30 meters the amp recognizes that fact, and displays that band. However, there is no indication that the amp works on 30 meters, and there is not an optional band switch for 30 meters--probably, at a minimum, because that band is limited to 200 watts. I haven't even tapped the key on that band with the amp on. So, my question is whether or not the amp is 30 meters capable, even though it would probably violate the power limitation rule. I'm not sure what you are saying here. There is a 10.1MHz switch on the front of the KPA500. The amplifier puts out full power on 30 meters (even on 60 meters for that matter!!). However, I use the K3 per-band power setting to set the amp output for 200 watts maximum on 30 meters. That K3 per-band power setting when the KPA500 is on-line is REALLY nice!! Phil - AD5X __ 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] P3 alternating blinking red LEDs
Andrew Moore-3 wrote: Two LEDs inside my P3 are blinking, alternating, and my P3 shows no signals. Ideas? That's normal...don't worry about it. 73, Bill -- View this message in context: http://elecraft.365791.n2.nabble.com/P3-alternating-blinking-red-LEDs-tp6606251p6606488.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] KE7X Book Discount
I used the discount code JULYBOOKS11 last evening and it worked for a 20% discount on the K3 book. Thanks Fred. Mike -- View this message in context: http://elecraft.365791.n2.nabble.com/KE7X-Book-Discount-tp6606579p6606579.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] P3 alternating blinking red LEDs
I was more concerned about the lack of signals showing up, but come to think of it, maybe due to panic I didn't think to adjust the reference level. I'll check this when I get back home today. On Thu, Jul 21, 2011 at 8:10 AM, Bill W4ZV btipp...@alum.mit.edu wrote: Andrew Moore-3 wrote: Two LEDs inside my P3 are blinking, alternating, and my P3 shows no signals. Ideas? That's normal...don't worry about it. 73, Bill -- View this message in context: http://elecraft.365791.n2.nabble.com/P3-alternating-blinking-red-LEDs-tp6606251p6606488.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K2 Key Out?
Due to serious illness I am looking at simplifying and downsizing my radio equipment and returning to QRP using my old K2. Unfortunately the K2 seems to lack a facility that I used on the K3 namely a KEY OUT jack that could be used to key an external amplifier on transmit (or in my case the MFJ noise cancelling box, to avoid having to use the RF sensing.) Is there a solution? - Julian, G4ILO. K2 #392 K3 #222. * G4ILO's Shack - http://www.g4ilo.com * KComm - http://www.g4ilo.com/kcomm.html * KTune - http://www.g4ilo.com/ktune.html -- View this message in context: http://elecraft.365791.n2.nabble.com/K2-Key-Out-tp6606742p6606742.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K2 Key Out?
I can send you an amp kit free of charge but let me check my junk box first . Sent from my iPhone 4 Julian, G4ILO julian.g4...@gmail.com 於 2011年7月21日 下午9:23 寫道： Due to serious illness I am looking at simplifying and downsizing my radio equipment and returning to QRP using my old K2. Unfortunately the K2 seems to lack a facility that I used on the K3 namely a KEY OUT jack that could be used to key an external amplifier on transmit (or in my case the MFJ noise cancelling box, to avoid having to use the RF sensing.) Is there a solution? - Julian, G4ILO. K2 #392 K3 #222. * G4ILO's Shack - http://www.g4ilo.com * KComm - http://www.g4ilo.com/kcomm.html * KTune - http://www.g4ilo.com/ktune.html -- View this message in context: http://elecraft.365791.n2.nabble.com/K2-Key-Out-tp6606742p6606742.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K2 Key Out?
Julian - Yes, there is. Check the K2 notes pages on the Elecraft web site, or build your own, which is what I did.All that is required, if I remember correctly, is a resistor (anything between 1000 and 2200 Ohms, 1/4 watt) and a NPN transistor capable of handling the required amplifier keying current and voltage. A 2N3053 / ECG125 would be one example. A 2N would be another, but if you are using a vacuum-tube amplifier, check the key up voltage across the amplifier keying jack, and size the driver transistor accordingly. This assumes your amplifier has a positive voltage across the key jack when in standby mode. If it is negative,. you may need a small driver relay. Most amplifiers, not all, will not need the relay. Inside the K2, connect the 2200 ohm resistor from the 8T (8 volts on transmit) line in the K2 to the 2N3053 base, ground the 2N3053 emitter, and the 2N3053 collector connects to the amplifier key port. There is (or at least was) a small kit offered that contains the needed parts and a small PC board. I used a small square of perf-board and hand wired the thing using the component leads, not printed traces needed. I also installed a RCA phono jack on the rear panel using one of the unused extra holes. Of course, you could drill an extra hole if needed, or just use a pigtail with the RCA jack hanging on the end. I also installed a .005 uFd / 500 volt disk ceramic cap across the output jack just in case there were RF issues, but don't know if it was actually necessary. In any case, it works fine. - Jim, KL7CC Julian, G4ILO wrote: Due to serious illness I am looking at simplifying and downsizing my radio equipment and returning to QRP using my old K2. Unfortunately the K2 seems to lack a facility that I used on the K3 namely a KEY OUT jack that could be used to key an external amplifier on transmit (or in my case the MFJ noise cancelling box, to avoid having to use the RF sensing.) Is there a solution? __ 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] KPA500 #203
Received #203 on Wednesday at 1 PM, kit complete at 6:30 PM. All went smoothly with only a few flat head screws missing from inventory. Send note to Elecraft on those items and proceeded to setup amplifier in shack. Jumped on 160m with my regular group on 1905 and got several excellent reports over my previous signal using the Flex 5000 barefoot. So it works as advertised and was a dream to assemble and operate. Well done Elecraft! Steve Springer K3NPK __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] WTB or trade
Looking for one or two 200 or 250 Hz filters for the K3 (matched on the five pole would be nice, but not super fussy)... I have a KBPF3 General Coverage RX Bandpass Module and KFL3A-6K (6 kHz AM / ESSB, 8-pole (req'd for AM) **) available for trade or sale. Maybe a KFL3B-FM (13 kHz FM (required for FM) **), still mentally debating this, as well. Let me know price shipped to 37709, off reflector. Thanks, Julius n2wn - Julius Fazekas N2WN Tennessee Contest Group http://www.k4ro.net/tcg/index.html Tennessee QSO Party http://www.tnqp.org/ Elecraft K2#4455 Elecraft K3/100 #366 Elecraft K3/100 #1875 -- View this message in context: http://elecraft.365791.n2.nabble.com/WTB-or-trade-tp6606993p6606993.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K2 (10 W) build album
Hi All! I never did this when I built my K1-4, and I regret it, so I am really documenting the build of my K2. I completed the 160 meter module yesterday, and I hope to have the noise blanker done today. I am building the options first, and then the K2. That way, they will be done and ready to install when the K2 itself is done. I am putting these up on my Facebook page. Here is the link to the album: https://www.facebook.com/media/set/?set=a.1665935347853.66841.1821370858l=622cfd67edtype=1 More pics to follow as the build progresses. Enjoy!! 73, David, KC9EHQ K1-4 s/n 2051 K2 s/n 7164 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K2 Key Out?
Jim Instead of using 8T to drive the keying circuit, you should use the fall of 8R - 8R falls before 8T is asserted and stays down longer than 8T is active. It will follow the menu setting for t-r (8R HOLD) and the delay setting. Using 8T could cause hot switching at the amplifier in some cases. The circuit on the Elecraft website uses 8R, and in fact 8T is not present at J13 for the B level (post SN 3000) RF Boards. 73, Don W3FPR On 7/21/2011 9:47 AM, Jim Wiley wrote: Julian - Yes, there is. Check the K2 notes pages on the Elecraft web site, or build your own, which is what I did.All that is required, if I remember correctly, is a resistor (anything between 1000 and 2200 Ohms, 1/4 watt) and a NPN transistor capable of handling the required amplifier keying current and voltage. A 2N3053 / ECG125 would be one example. A 2N would be another, but if you are using a vacuum-tube amplifier, check the key up voltage across the amplifier keying jack, and size the driver transistor accordingly. This assumes your amplifier has a positive voltage across the key jack when in standby mode. If it is negative,. you may need a small driver relay. Most amplifiers, not all, will not need the relay. Inside the K2, connect the 2200 ohm resistor from the 8T (8 volts on transmit) line in the K2 to the 2N3053 base, ground the 2N3053 emitter, and the 2N3053 collector connects to the amplifier key port. There is (or at least was) a small kit offered that contains the needed parts and a small PC board. I used a small square of perf-board and hand wired the thing using the component leads, not printed traces needed. I also installed a RCA phono jack on the rear panel using one of the unused extra holes. Of course, you could drill an extra hole if needed, or just use a pigtail with the RCA jack hanging on the end. I also installed a .005 uFd / 500 volt disk ceramic cap across the output jack just in case there were RF issues, but don't know if it was actually necessary. In any case, it works fine. - Jim, KL7CC Julian, G4ILO wrote: Due to serious illness I am looking at simplifying and downsizing my radio equipment and returning to QRP using my old K2. Unfortunately the K2 seems to lack a facility that I used on the K3 namely a KEY OUT jack that could be used to key an external amplifier on transmit (or in my case the MFJ noise cancelling box, to avoid having to use the RF sensing.) Is there a solution? __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] Advantage to waiting on P3?
I'd like to get a P3 but have been seeing emails over the past months about forthcoming enhancements to it. Would it benefit me to wait for these to be released? Or will the enhancements be add-ons regardless of P3 version? Thanks 73, Mike ab3ap __ 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] KPA500 #212
Hi all My KPA-500 sn 0212 got delivered on Monday afternoon by UPS, started Tuesday morning on assembly all went well except some flat head screws were missing but a quick email and Gary had the small screws enroute. The Aux cable is a must have and the K3 and KPA500 talking to one another!!! Nicely. I'm utterly amazed at how quiet the amp is. I have FN-1 running on the K3 and that's louder than the amp. Congratulations on the excellent engineering, an absolute work of art. So the K-Line is alive!! A K-line pin would be nice!!! Ken..G0ORH K2, K3, P3, KPA500. Sent from my iPhone On 21 Jul 2011, at 15:35, Stephen Springer sbsi...@gmail.com wrote: Received #203 on Wednesday at 1 PM, kit complete at 6:30 PM. All went smoothly with only a few flat head screws missing from inventory. Send note to Elecraft on those items and proceeded to setup amplifier in shack. Jumped on 160m with my regular group on 1905 and got several excellent reports over my previous signal using the Flex 5000 barefoot. So it works as advertised and was a dream to assemble and operate. Well done Elecraft! Steve Springer K3NPK __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] MCU 4.39 / DSP 2.73
Hello, in the release notes there is the S-Meter Light program mentioned. I just installed it and didn`t find a support for K3`s. Will this be released later ? 73 Michael -- View this message in context: http://elecraft.365791.n2.nabble.com/MCU-4-39-DSP-2-73-tp6604057p6607284.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Rb GPS DO comparison
On Wed, Jul 20, 2011 at 7:08 PM, Igor Kosvin k.i...@comcast.net wrote: ...aging drift - better than 1e-11 per month. Useful life of LPRO - usually 15 years. Make your math how much it drifts over life === An interesting question. If the drift is always in the same direction, you get the (apparently) obvious answer. If, at the other extreme, each month's drift is independent of the previous month's, then the expected frequency at the end will be described by a Gaussian distribution with mean = the starting point, and standard deviation scaled by the square root of the number of months. In practice, one would expect some serial correlation between monthly drifts, so a bias would be added to the expected mean. Tony KT0NY __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] KPA500 on 30 meters
My error! Phil Salas is right of course. I was looking across the top row of band selection buttons, and 30 meters is skipped, but it is on the 2nd row. All the WARC bands, plus 6 meters are on the 2nd row. I've now set my 30 meter position to max at 200 watts. Pretty slick! Dave W7AQK === Email scanned by PC Tools - No viruses or spyware found. (Email Guard: 7.0.0.18, Virus/Spyware Database: 6.17960) http://www.pctools.com/ === __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Rb GPS DO comparison
The drift rate of 1e-11 per month or so is regarded after one month of conituous operation. The first month after turn-on is different. It usually takes few days, sometimes couple weeks to reach the final drift rate. After that it is pretty much constant slope. Every time you turn off the clock and then turn i t on again, depends on the duration of off time, the frequency will drift initially at higher rate. It takes time to Rubidium atoms to reach equilibrium position in the cloud inside the resonance cell. When you turn the unit off, the atoms of rubidium (which is metal alk ali by the way) will fall down (gravity) and form little metal drop on the bottom of the cell. When you turn it on, the cell is heated and the atoms evaporate and go into the cloud form. By the way, ambient temperature variations have much higher effect on frequency than just aging. Magnetic fields are also detrimental. Don't place it in close proximity to CRT monitors or dynamic speakers. Igor, N1YX - Original Message - From: Tony Estep estept...@gmail.com To: elecraft@mailman.qth.net Sent: Thursday, July 21, 2011 11:33:54 AM Subject: Re: [Elecraft] Rb GPS DO comparison On Wed, Jul 20, 2011 at 7:08 PM, Igor Kosvin k.i...@comcast.net wrote: ...aging drift - better than 1e-11 per month. Useful life of LPRO - usually 15 years. Make your math how much it drifts over life === An interesting question. If the drift is always in the same direction, you get the (apparently) obvious answer. If, at the other extreme, each month's drift is independent of the previous month's, then the expected frequency at the end will be described by a Gaussian distribution with mean = the starting point, and standard deviation scaled by the square root of the number of months. In practice, one would expect some serial correlation between monthly drifts, so a bias would be added to the expected mean. Tony KT0NY __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ 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] Two questions: ESD Solder issue w/ PC Board
Hi Everyone! I have two questions that I would like to pose to the group about grounding and soldering PC boards: 1. I know about ESD precautions, and I do take them. I have a wrist strap, and my soldering iron is ESD safe. I am working on my K2 in the basement. I have pained concrete floors and walls. I sit in a rolling chair that doesn't seem to have any static issues. And, my work table is a painted wood bench. As long as I wear my wrist strap, I should be OK due to the environment I am in, right? I'd be more concerned if I was working in a carpeted room or the like. Unless it is winter and I wear a sweater, I never have ESD problems down in the shack. 2. Has anyone else had this happen to them...You go to solder your components onto the board, and the component or board doesn't want to take the solder immediately? I had this problem with the 160 meter board yesterday. I am using a Weller soldering station with a tip that looks to be in good order, Kester 60/40 solder, and proper technique. Any ideas? 73 Thanks, David KC9EHQ __ 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] Two questions: ESD Solder issue w/ PC Board
On Thu, Jul 21, 2011 at 11:12 AM, David Dietrich kc9ehq2...@yahoo.comwrote: ...You go to solder your components onto the board, and the component or board doesn't want to take the solder immediately?... = David, there is a wealth of info on this and other building topics included in the Softrock build instructions at: http://www.wb5rvz.com/sdr/sr_lite_ii/#buildnotes The immediate answer to your soldering question is to apply flux to the joint before soldering. You can get it in semi-solid form and apply with a toothpick, or in a flux pen, or in a liquid that can be shot onto the joint with a bottle that has a metal needle-like applicator. I like the bottle, but they all work. The WB5RVZ instructions include links to a number of videos and other tutorial sites that are very informative and helpful when gearing up for a daunting building project. 73, Tony KT0NY -- http://www.isb.edu/faculty/facultydir.aspx?ddlFaculty=352 __ 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] P3 alternating blinking red LEDs
I'm sure the reference level setting is why you don't see any signals as you have already surmised. As someone else mentioned I think the red blinking LED is normal. At least my PIII has a red blinking LED or two inside which I was a bit surprised to discover. I ate concluded it was probably trying to signal that it had found some rare DX or that the Elecraft monster was attempting to escape. One can't be too careful about things like that! Bruce-W8FU On Jul 21, 2011, at 8:50 AM, Andrew Moore wrote: I was more concerned about the lack of signals showing up, but come to think of it, maybe due to panic I didn't think to adjust the reference level. I'll check this when I get back home today. On Thu, Jul 21, 2011 at 8:10 AM, Bill W4ZV btipp...@alum.mit.edu wrote: Andrew Moore-3 wrote: Two LEDs inside my P3 are blinking, alternating, and my P3 shows no signals. Ideas? That's normal...don't worry about it. 73, Bill -- View this message in context: http://elecraft.365791.n2.nabble.com/P3-alternating-blinking-red-LEDs-tp6606251p6606488.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] KPA 500 on 6m
Had the amp a month. Only used it on 6m as I'm chasing DXCC on that band. I drive it with apx 34W from the K3. Display says 500w. Modest 5 el yagi on a 12' boom here. 7 new ones since I got the amp. Wrkd three JAs one afternoon. Not bad from NW Tennessee. I love the amp. Guess it will get it's first HF test when the ST0 comes on next week K9IL __ 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] RF gain sweet spot
K7WIA's experience with his 6m receiver got me to try this with my K3. I have an ARR P50VDG preamp installed and see typically S4 flickering up to S5 for noise connected either 6m yagi. Reducing RFGain immediately increases s-meter reading with the ARR preamp so I switched it off. Noise is almost not readable on the s-meter and reducing RFGain does not result in increase in s-meter reading until I rotate the RFGain less than 3-oclock postion. There is not enough s-meter resolution to tell if there is any reduction in noise (none detectable by ear until s-meter begins to rise). Finally, I tried this with the internal K3 preamp turned on. Normal noise reading is S3. Reducing RFGain exhibited the same as not using any preamp except s-meter stays at S-3 until I rotate below 3-oclock position whereby the reading climbs above S3. Considering that I am in rural Alaska I should have less ambient noise floor than K7WIA but do not see the behavior he is seeing. Comments? I would be interested to know if he is using a K3 (radio was not specified) and whether that was running with a preamp and what kind? My take on my readings is that the ARR has more than enough gain (maybe too much) and I am seeing amplified noise. But I do not get the s-meter behavior seen by K7WIA when reducing RFGain? 73, Ed - KL7UW, WD2XSH/45 == BP40IQ 500 KHz - 10-GHz www.kl7uw.com EME: 50-1.1kw?, 144-1.4kw, 432-100w, 1296-60w, 3400-? DUBUS Magazine USA Rep dubus...@gmail.com == __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Advantage to waiting on P3?
Add-ons I believe. 73, Bill K9YEQ -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Mike Markowski Sent: Thursday, July 21, 2011 10:26 AM To: Elecraft Group Subject: [Elecraft] Advantage to waiting on P3? I'd like to get a P3 but have been seeing emails over the past months about forthcoming enhancements to it. Would it benefit me to wait for these to be released? Or will the enhancements be add-ons regardless of P3 version? Thanks 73, Mike ab3ap __ 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] Possible KX3 carry case..
Just picked up a padded soft-side case at Walmart: made by Norelco, it is designed for one of their electric razor outfits. Made from nice quality heavy duty Nylon weave construction, complete side zips open with a few small mesh compartments inside that I will remove. Size is approx 6W x 8L x 3D, a handle on one end (vertical carry), and another on one end of one side (pull sideways to open) Plus two zipper pockets on each of the long sides that will comfortably carry the mike, key, antenna gear, etc., etc. Some others may be interested.. ...just getting ready... -- Dave G KK7SS Richland, WA '59 Morris Minor 1000 - working on it.. '65 Sprite - in process :( '76 Midget - co-owned with #4 Son :) '06 Honda Civic Hybrid __ 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] RF gain sweet spot
Ed, I suspect he was not using a K3 because he said the S-meter did reduce when the RF Gain was reduced. You could turn off the K3 preamp and turn on the attenuator and see if that drops the ambient noise level. With your external preamp, I suspect you can reduce the K3 gain substantially. 73, Don W3FPR On 7/21/2011 1:13 PM, Edward R. Cole wrote: K7WIA's experience with his 6m receiver got me to try this with my K3. I have an ARR P50VDG preamp installed and see typically S4 flickering up to S5 for noise connected either 6m yagi. Reducing RFGain immediately increases s-meter reading with the ARR preamp so I switched it off. Noise is almost not readable on the s-meter and reducing RFGain does not result in increase in s-meter reading until I rotate the RFGain less than 3-oclock postion. There is not enough s-meter resolution to tell if there is any reduction in noise (none detectable by ear until s-meter begins to rise). Finally, I tried this with the internal K3 preamp turned on. Normal noise reading is S3. Reducing RFGain exhibited the same as not using any preamp except s-meter stays at S-3 until I rotate below 3-oclock position whereby the reading climbs above S3. Considering that I am in rural Alaska I should have less ambient noise floor than K7WIA but do not see the behavior he is seeing. Comments? I would be interested to know if he is using a K3 (radio was not specified) and whether that was running with a preamp and what kind? My take on my readings is that the ARR has more than enough gain (maybe too much) and I am seeing amplified noise. But I do not get the s-meter behavior seen by K7WIA when reducing RFGain? 73, Ed - KL7UW, WD2XSH/45 __ 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] RF gain sweet spot
I believe that all this does is prove what I have said many times for over two years---every K3 is different with respect to its RFG/AGC characteristics. The RF Gain calibration is an attempt to fix this variability. --- On Thu, 7/21/11, Edward R. Cole kl...@acsalaska.net wrote: From: Edward R. Cole kl...@acsalaska.net Subject: Re: [Elecraft] RF gain sweet spot To: Elecraft@mailman.qth.net Date: Thursday, July 21, 2011, 11:13 AM K7WIA's experience with his 6m receiver got me to try this with my K3. I have an ARR P50VDG preamp installed and see typically S4 flickering up to S5 for noise connected either 6m yagi. Reducing RFGain immediately increases s-meter reading with the ARR preamp so I switched it off. Noise is almost not readable on the s-meter and reducing RFGain does not result in increase in s-meter reading until I rotate the RFGain less than 3-oclock postion. There is not enough s-meter resolution to tell if there is any reduction in noise (none detectable by ear until s-meter begins to rise). Finally, I tried this with the internal K3 preamp turned on. Normal noise reading is S3. Reducing RFGain exhibited the same as not using any preamp except s-meter stays at S-3 until I rotate below 3-oclock position whereby the reading climbs above S3. Considering that I am in rural Alaska I should have less ambient noise floor than K7WIA but do not see the behavior he is seeing. Comments? I would be interested to know if he is using a K3 (radio was not specified) and whether that was running with a preamp and what kind? My take on my readings is that the ARR has more than enough gain (maybe too much) and I am seeing amplified noise. But I do not get the s-meter behavior seen by K7WIA when reducing RFGain? 73, Ed - KL7UW, WD2XSH/45 == BP40IQ 500 KHz - 10-GHz www.kl7uw.com EME: 50-1.1kw?, 144-1.4kw, 432-100w, 1296-60w, 3400-? DUBUS Magazine USA Rep dubus...@gmail.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 mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K2 Question
I want to thank all of you for the outpouring of comments and suggestions regarding the K2. I did not realize all the options available and you all have provided me with good information to evaluate making my selection. As mentioned to some, my goal is to get down to one main radio (besides my K1) which is capable of battery operation both at home and in the field and has a good track record. As my soldering days are long behind me, the K2 has a great following upon which I feel I can rely. Since I am a casual operator with no contesting desires other than sprints and 90% CW there are many features which would not be necessary. Regards Alan KB7MBI __ 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] MH2 Microphone and K3 (K1DWZ)
There is an ELECRAFT Application Note Front Panel Microphone Circuit Modification. You have it on your K3? 73s - Twan - PA0KV |I have a situation with the CMP and ACL graphs indicating and a scratchy |noise that happens many times when I press the PTT button pn my MH2 mic. |If I tap it or speak into it the graphs return to normal and the noise |disappears I grounded pin 2 on the mic jack on the K3 and there is no noise or |graph indication. I connected my Kenwood mic and it happens with it |also. Could there be some RF feedback getting into the mic circuit ? |K1DWZ __ 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] RF gain sweet spot
Yes I am using the K3 I was using the preamp that is in the K3,I also have the ARR P50VD preamp on the back of the K3 but using it just raises the background noise to S7. Remember I live in the city. I can turn off the preamp that is in the K3, disconnect the antenna listen to the hiss of the K3, and then hook the antenna back and hear the noise increase.. i am going to try it with out using any preamp at all...I can still detect the weak beacon that are in my area. and still hear a increase in noise when the antenna is connected. but just to reduce the background noise has helped my 73 yo ears make the weak ones stand out better. even without the preamp on I still get the 2nd bar on the S meter to flicker, and i can reduce the Rf gain just slightly ( not much) to dip the S meter. just the joys of living in a big city, powerline, and wireless headphones on 6 meters Ed K7WIA -- View this message in context: http://elecraft.365791.n2.nabble.com/RF-gain-sweet-spot-tp6604787p6608306.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] RF gain sweet spot
Ed, When one reduces the RF Gain on the K3, the S-meter indication increases. So how are you accomplishing this S-meter dip? I do not doubt your results, but perhaps your description of the S-meter deflection has been misunderstood. 73, Don W3FPR On 7/21/2011 4:00 PM, K7WIA wrote: Yes I am using the K3 I was using the preamp that is in the K3,I also have the ARR P50VD preamp on the back of the K3 but using it just raises the background noise to S7. Remember I live in the city. I can turn off the preamp that is in the K3, disconnect the antenna listen to the hiss of the K3, and then hook the antenna back and hear the noise increase.. i am going to try it with out using any preamp at all...I can still detect the weak beacon that are in my area. and still hear a increase in noise when the antenna is connected. but just to reduce the background noise has helped my 73 yo ears make the weak ones stand out better. even without the preamp on I still get the 2nd bar on the S meter to flicker, and i can reduce the Rf gain just slightly ( not much) to dip the S meter. just the joys of living in a big city, powerline, and wireless headphones on 6 meters Ed K7WIA __ 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] P3 alternating blinking red LEDs
The LEDs are there as a troubleshooting aid. If D200 is blinking the CPU is alive and if D301 is blinking then the CPU is able to communicates with the video graphics controller. Alan N1AL On Thu, 2011-07-21 at 07:10 -0400, Andrew Moore wrote: Two LEDs inside my P3 are blinking, alternating, and my P3 shows no signals. Ideas? --Andrew, NV1B __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] RF gain sweet spot
Ok we did the RF calibration per the K3 utility program using the XG3 for the signal source and I see no change with the way the S meter responds, being I use the K3 for 6 meters only I set the S meter calibration for that band using the XG3 this is how my S meter is set up in the Confg. menu. SMTR OF: 027 SMTR SC: 012 SMTR PK: OFF SMTR MD: NOR this is set with the preamp on in the K3 -107 dbm = S3 -73 dbm = S9 -33 dbm = 40/9 Ed K7WIA -- View this message in context: http://elecraft.365791.n2.nabble.com/RF-gain-sweet-spot-tp6604787p6608484.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] RF gain sweet spot
Don, when the RF gain is fully cw ( max ) I have 3 bars on the S Meter, when I slowly reduce the RF gain control I watch the S Meter and when I get it just past the 9 o'clock position the S Meter will reduce to only 1 bar showing. you can hear the background noise drop as you do this, then I just add a bit more gain back just enough to hear the noise increase back up. the lowest I can reduce the S meter is to 1 bar showing, I add just enough gain back to get the 2nd bar to flicker.. if i reduce the gain to much the S meter will start to climb back up in the normal maner Ed K7WIA -- View this message in context: http://elecraft.365791.n2.nabble.com/RF-gain-sweet-spot-tp6604787p6608509.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] RF gain sweet spot
oops this should be reduce to the 3 o'clock posistion,,,sorry Ed K7WIA -- View this message in context: http://elecraft.365791.n2.nabble.com/RF-gain-sweet-spot-tp6604787p6608569.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] RF gain sweet spot
Don, when the RF gain is fully cw ( max ) I have 3 bars on the S Meter, when I slowly reduce the RF gain control I watch the S Meter and when I get it just past the 9 o'clock position the S Meter will reduce to only 1 bar showing. ??? As I gradually reduce the RF gain on my K3, the S meter reading climbs gradually towards full scale. I guess there is something different with your settings Ed? 73 Gary ZL2iFB __ 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] P3 alternating blinking red LEDs
See...The Mojo indicators! Gary On 22 July 2011 06:38, Alan Bloom n...@sonic.net wrote: The LEDs are there as a troubleshooting aid. If D200 is blinking the CPU is alive and if D301 is blinking then the CPU is able to communicates with the video graphics controller. Alan N1AL On Thu, 2011-07-21 at 07:10 -0400, Andrew Moore wrote: Two LEDs inside my P3 are blinking, alternating, and my P3 shows no signals. Ideas? --Andrew, NV1B __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html -- VK4FD - Motorhome Mobile Elecraft Equipment K3 #679, KPA-500 #018 Living the dream!!! __ 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] RF gain sweet spot
Ed, Something is strange. It may be your ambient noise level, so try it with the K3 connected to a dummy load (or just no antenna). Normally, as the RF gain is reduced, the S-meter indication will increase. Apparently your K3 is doing something different. At a 9 o'clock position, my K3 indicates S-7 when the K3 is connected to a dummy load. 73, Don W3FPR On 7/21/2011 5:04 PM, K7WIA wrote: Don, when the RF gain is fully cw ( max ) I have 3 bars on the S Meter, when I slowly reduce the RF gain control I watch the S Meter and when I get it just past the 9 o'clock position the S Meter will reduce to only 1 bar showing. you can hear the background noise drop as you do this, then I just add a bit more gain back just enough to hear the noise increase back up. the lowest I can reduce the S meter is to 1 bar showing, I add just enough gain back to get the 2nd bar to flicker.. if i reduce the gain to much the S meter will start to climb back up in the normal maner Ed K7WIA __ 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] RF gain sweet spot
I don't know but I like it this way, as my noise floor changes through the day I do have to readjust the sweet spot, but it is just a very small turn of the RF knob I checked this with the noise blanker on and off and I see the same effect, it's just with the blanker off I can only reduce it to 2 bars on the meter. could be I got a special K3.. Ed K7WIA -- View this message in context: http://elecraft.365791.n2.nabble.com/RF-gain-sweet-spot-tp6604787p6608638.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] RF gain sweet spot
Well when i disconect the antenna I have no bars on the S meter, a 2 inch piece of wire at the ant port gave me 1 bar on the S meter and I can still dip the meter,, THIS ALL HAPPENS AT THE 3 O'CLOCK POSITIONNOT AT 9'CLOCK MY ERROR Ed K7WIA -- View this message in context: http://elecraft.365791.n2.nabble.com/RF-gain-sweet-spot-tp6604787p6608674.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] RF gain sweet spot
OK I just did a test using the XG3 set at the 1uv 50uv level and I can dip the S meter. it dips the signal level of the XG3 shown on the S meter... Ed K7WIA -- View this message in context: http://elecraft.365791.n2.nabble.com/RF-gain-sweet-spot-tp6604787p6608708.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] RF gain sweet spot
I think the RF pot has a weak spot near the CW end. I don't know how it's made, but if the resistance is decreasing as it goes toward CW then it is minimum at three o'clock and increases slightly to full CW. Just my 2 cents. Kurt, W7QHD Date: Thu, 21 Jul 2011 15:17:19 -0700 From: emoss98...@msn.com To: elecraft@mailman.qth.net Subject: Re: [Elecraft] RF gain sweet spot OK I just did a test using the XG3 set at the 1uv 50uv level and I can dip the S meter. it dips the signal level of the XG3 shown on the S meter... Ed K7WIA -- View this message in context: http://elecraft.365791.n2.nabble.com/RF-gain-sweet-spot-tp6604787p6608708.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ 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] RF gain sweet spot
I seem to recall that somebody demonstrate a similar artifact in the RF gain control to Elecraft at Dayton. Anybody recall just what that demo was? 73 de Brian/K3KO On 7/21/2011 21:37, Don Wilhelm wrote: Ed, Something is strange. It may be your ambient noise level, so try it with the K3 connected to a dummy load (or just no antenna). Normally, as the RF gain is reduced, the S-meter indication will increase. Apparently your K3 is doing something different. At a 9 o'clock position, my K3 indicates S-7 when the K3 is connected to a dummy load. 73, Don W3FPR On 7/21/2011 5:04 PM, K7WIA wrote: Don, when the RF gain is fully cw ( max ) I have 3 bars on the S Meter, when I slowly reduce the RF gain control I watch the S Meter and when I get it just past the 9 o'clock position the S Meter will reduce to only 1 bar showing. you can hear the background noise drop as you do this, then I just add a bit more gain back just enough to hear the noise increase back up. the lowest I can reduce the S meter is to 1 bar showing, I add just enough gain back to get the 2nd bar to flicker.. if i reduce the gain to much the S meter will start to climb back up in the normal maner Ed K7WIA __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html - No virus found in this message. Checked by AVG - www.avg.com Version: 10.0.1390 / Virus Database: 1518/3778 - Release Date: 07/21/11 - No virus found in this message. Checked by AVG - www.avg.com Version: 10.0.1390 / Virus Database: 1518/3778 - Release Date: 07/21/11 __ 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] RF gain sweet spot
The RF pot in the K3 is a encoder, not a carbon pot found in old tube radios used as a volume control. Ed K7WIA -- View this message in context: http://elecraft.365791.n2.nabble.com/RF-gain-sweet-spot-tp6604787p6608745.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] RF gain sweet spot
Ed, Ok, I have just confirmed your experience (but I cannot explain it). If I tune to a band where the noise level is S-3 and I reduce the RF Gain a bit (to the 2:30 or 3 o'clock position), the S-meter reading will reduce, but if I reduce the RF Gain more CCW, the S-meter reading will increase as expected. The schematics tell me that the reduced RF Gain is the same as increased AGC - so there is something strange going on between the full CW position of the RF Gain control and the 3 o'clock position. It does not respond as I would expect. Maybe Lyle can chime in with some words of wisdom to explain this happening - Wayne is on vacation, so I don't think he can be of much help right now. Ed, I no longer doubt your report - but I do find it a bit strange. 73, Don W3FPR On 7/21/2011 4:52 PM, K7WIA wrote: Ok we did the RF calibration per the K3 utility program using the XG3 for the signal source and I see no change with the way the S meter responds, being I use the K3 for 6 meters only I set the S meter calibration for that band using the XG3 this is how my S meter is set up in the Confg. menu. SMTR OF: 027 SMTR SC: 012 SMTR PK: OFF SMTR MD: NOR this is set with the preamp on in the K3 -107 dbm = S3 -73 dbm = S9 -33 dbm = 40/9 Ed K7WIA __ 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] RF gain sweet spot
OH! Well, my non tube type K2 has a carbon pot. Date: Thu, 21 Jul 2011 15:34:01 -0700 From: emoss98...@msn.com To: elecraft@mailman.qth.net Subject: Re: [Elecraft] RF gain sweet spot The RF pot in the K3 is a encoder, not a carbon pot found in old tube radios used as a volume control. Ed K7WIA -- View this message in context: http://elecraft.365791.n2.nabble.com/RF-gain-sweet-spot-tp6604787p6608745.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ 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] RF gain sweet spot
I don't know if this is a software glitch or not. but if it's in the software I would sure like to keep this feature as it has given me a edge on weak sig, just being able to have a set point for the gain just right for the band conditions. I would have to compare another K3 that did not do this side by side to see if it was better.. and keep the best one...as I am very happy now.. Ed K7WIA -- View this message in context: http://elecraft.365791.n2.nabble.com/RF-gain-sweet-spot-tp6604787p6608782.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 - RF gain sweet spot
FWIW: K3 #642 does it too. I never mess with the RF gain so I never noticed it before. Full gain on mine is at 5 o'clock. S-meter drops until 4 o'clock, then starts climbing. What I do NOT notice is an improved S/N on a very weak signal from my service monitor at the S-meter minimum. Signal goes down too. Not sure, but my thinker thinks I expected that. Fred K6DGW Auburn CA On 7/21/2011 3:40 PM, Don Wilhelm wrote: Ed, Ed, I no longer doubt your report - but I do find it a bit strange. 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
Re: [Elecraft] RF gain sweet spot
Don. LEAVE IT ALONE I LIKE IT THIS WAY Ed K7WIA -- View this message in context: http://elecraft.365791.n2.nabble.com/RF-gain-sweet-spot-tp6604787p6608796.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] RF gain sweet spot
* On 2011 21 Jul 17:48 -0500, K7WIA wrote: I don't know if this is a software glitch or not. but if it's in the software I would sure like to keep this feature as it has given me a edge on weak sig, just being able to have a set point for the gain just right for the band conditions. I would have to compare another K3 that did not do this side by side to see if it was better.. and keep the best one...as I am very happy now.. It would be a nice effect, but I don't see this on the low bands although I just tried it on 15m. What I see is the S meter level remaining constant until the RF Gain is reduced to the point that the bars begin to rise above the band noise. What I am going to try is setting the RF gain just at the point before the bar advance pas the band noise. As I have my S meter set for absolute, I am seeing about an S9 level on the meter from the noise. I can reduce the RF gain until the next bar is displayed and then back down just to where it goes out and the noise level from the speaker is greatly reduced. I will see how things work on a net in a few minutes. I don't see a visible dip, though. I am at MCU 4.36, FPF 1.14, and DSP1 3.73, on K3 S/N 4762. 73, de Nate N0NB -- The optimist proclaims that we live in the best of all possible worlds. The pessimist fears this is true. Ham radio, Linux, bikes, and more: http://www.n0nb.us __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] [OT] 15m self oscillation
Not necessarily with a k3 but any rig. I and others have had issues with a 706 on 15 or 17 and I don't remember which. I had a weird swr issue and maybe self oscillation on 15. Blew my lpa board again.( it's my understanding that there is no swr protection for that board yet because of so few problems but this my third). I don't know if this could be caused by a dirty roller inductor, I'm going to clean it. When I switched over to the 706 I noticed intermittent the cross needles go straight up. May have been self oscillating, don't know. I believe they would stay straight up with no modulation. Ideas? Thanks Mike R Sent from my spy ring __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] [OT] 15m self oscillation
Mike, The first response is what happens if you transmit into a dummy load. If the problem disappears when connected to a dummy load, you either have a parasitic oscillation or you have problem with your antenna system. Since this situation occurs with multiple transceivers, I highly suspect an antenna system problem. An antenna analyzer may reveal the problem. 73, Don W3FPR On 7/21/2011 7:19 PM, Mike Rodgers wrote: Not necessarily with a k3 but any rig. I and others have had issues with a 706 on 15 or 17 and I don't remember which. I had a weird swr issue and maybe self oscillation on 15. Blew my lpa board again.( it's my understanding that there is no swr protection for that board yet because of so few problems but this my third). I don't know if this could be caused by a dirty roller inductor, I'm going to clean it. When I switched over to the 706 I noticed intermittent the cross needles go straight up. May have been self oscillating, don't know. I believe they would stay straight up with no modulation. Ideas? Thanks Mike R Sent from my spy ring __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K2 Question
Alan... I have the K2/100 as my exclusive radio. It has served all my needs admirably. Other radios are no doubt better, but only marginally. The 100w amp can be swapped out for QRP when that mode is desired. I operate virtually 100% cw and in this mode, it's a very serviceable radio. And, as many others have said, I built it myself! ...robert On 7/20/2011 04:10, ardujen...@aol.com wrote: QUESTION: For those who have only one radio to use for base station and occasional field operations have you found the K2 to be more than adequate or do you recommend the K2/100 with external ATU? I am a casual operator; both CW (90%) and SSB (10%). Do those of you who have or had the K2/20 have regrets not getting the K2/100? Thank you in advance for your feedback Alan KB7MBI __ 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 -- Robert G. Strickland, PhD, ABPH - KE2WY rc...@verizon.net Syracuse, New York, USA __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] [OT] 15m self oscillation
...I and others have had issues with a 706 on 15 or 17 and I don't remember which. I had a weird swr issue and maybe self oscillation on 15... There was an instability problem with the IC-706MKIIG on 15 and 17 meters. Icom published a service bulletin on this (Bulletin 928). It has to do with making a better internal ground in the radio. I have a copy of this service bulletin on my website, as well as an easier way to accomplish the fix. Check the Equipment Modifications section at www.ad5x.com. Phil - AD5X __ 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] AMERITRON AL1200 AMPLIFIER FOR SALE to buy KPA500 Redux
Dear Gang: I posted this message a while back, then had some health issues pop up that distracted me. My apologies to those who orginally responded. I just got the shipping notice from Elecraft that my KPA500K will ship in a few days. The SB-226 has been sold and now the AL-1200 MUST GO NOW. Please see the original message below and email with any questions. If more than one person wants it the highest bid over asking price gets it. This amp has very light use on it and is in like-new condition. You can now see video demos (and count the Elecraft boxes visible) of this clean amp at: http://www.youtube.com/watch?v=lAGWGr7PVFc http://www.youtube.com/watch?v=0gG5I269cnE 73 and thanks for the bandwidth! Eric WD6DBM It's 2:30am and the demons have come for me. I must own a KPA500. I MUST! I will now reduce the price on my PRISTINE, ALWAYS BABIED, PRE-MFJ AMERITRON AL-1200 amplifier to $1300! One owner! Non-smoking environment! I EVEN have the shipping boxes! 1500 watts 160-10, this thing is a key-down BEAST! Want QSK? I'll sell you my Ameritron QSK-5 Switch ALREADY SET UP FOR K3 and AL1200 at a price so low I'm too embarrassed to quote it here. Pickup only in S.F. Bay Area. __ 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] Advantage to waiting on P3?
No one has said this but I'm sure they will be user installable, is typical of most Elecraft enhancements to their products. 73, Tom Amateur Radio Operator N5GE ARRL Lifetime Member QCWA Lifetime Member On Thu, 21 Jul 2011 11:25:47 -0400, Mike Markowski mike.ab...@gmail.com wrote: I'd like to get a P3 but have been seeing emails over the past months about forthcoming enhancements to it. Would it benefit me to wait for these to be released? Or will the enhancements be add-ons regardless of P3 version? Thanks 73, Mike ab3ap __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] Advantage to waiting on P3?
I think the main selling point of Elecraft product is that older version can be field upgrade to the latest version. This can also be adversely interpreted in a naughty way as something 'work-in-progress' in the market :) - well, all depends how you view it. If you need a P3 now, just go for it. In future, if there is product improvement, you can always do the upgrade with minimal effort. I did all the upgrades to my earlier version of K3 myself -- nothing pain in the neck! TNX 73, Johnny VR2XMC 從︰ n...@n5ge.com n...@n5ge.com 收件人︰ Mike Markowski mike.ab...@gmail.com 副本(CC)︰ Elecraft Group elecraft@mailman.qth.net 傳送日期︰ 2011年07月22日 (週五) 9:06 AM 主題︰ Re: [Elecraft] Advantage to waiting on P3? No one has said this but I'm sure they will be user installable, is typical of most Elecraft enhancements to their products. 73, Tom Amateur Radio Operator N5GE ARRL Lifetime Member QCWA Lifetime Member On Thu, 21 Jul 2011 11:25:47 -0400, Mike Markowski mike.ab...@gmail.com wrote: I'd like to get a P3 but have been seeing emails over the past months about forthcoming enhancements to it. Would it benefit me to wait for these to be released? Or will the enhancements be add-ons regardless of P3 version? Thanks 73, Mike ab3ap __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Resistance Checks on pg. 45 (K3)
Thanks all. That was my crash course in resistance checking. The smoke test went fine and the lights were fun to look at. __ 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] need some roofing filter advice?
I do agree that the K3 is very versatile with high and low cuts. I guess it’s just ones preference. I can stand 2.2KHz BW or even 2KHz but anything less then that to me is too narrow. It’s probably because of my interest in HF music and the fact that my brothers and me owned and operated a Stereo hifi store in the 70’s or maybe it’s because of my selective hearing loss - Jack WA9FVP Willco Electronics -- View this message in context: http://elecraft.365791.n2.nabble.com/need-some-roofing-filter-advice-tp6581353p6609332.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] RF gain sweet spot
No, the RF Gain control is one-half of a dual potentiometer, see the K3 Front Panel schematic, page 5 of 7 Front Panel - Miscellaneous. Bob NW8L The RF pot in the K3 is a encoder, not a carbon pot found in old tube radios used as a volume control. Ed K7WIA __ 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
