Re: [Elecraft] Antennas for KX-1
I was out of town on a business trip this week, which gave me a good opportunity to try the antenna suggested by Bruce. I used his 68' with the 33' counterpoise. The kx1 obtained a flat match on 20, 30 and 80, but 40 was 1.9. I then tried Ron's suggestion. I had a 13' piece of wire so I wrapped it around my glasses case, which was approx 1.5 x 2.5, and this gave me a flat match on 40, but drove the swr up on the other 3 bands. It's not much trouble to clip/unclip the glassed case coil, so I was quite pleased. I will now make a small coil and keep it with the antenna. This set up worked very well for me. Thanks Bruce and Ron. Paul On 6/29/06, J. Coote [EMAIL PROTECTED] wrote: I've been following the 4-band antennas for KX-1 thread. Interesting and a real challenge for field operations. K2HYD's idea of a 51 foot antenna and counterpoise was helpful. Some additional thoughts- the ATU in the KX-1 is a little limited, as compared to other larger ATUs with more combinations, so we need antenna lengths which are relatively close to 50 ohms and nonreactive. The G5RV has already been done, but I am thinking of getting out my MFJ bridge thingie and trying flattop/feeder, or antenna/counterpoise length combinations (other than the G5RV) that will work well, and repeatably with the KX-1 internal ATU. Seems to me there have to be many flattop/feeder or antenna/counterpoise length combinations. 73 Jay W6CJ ___ 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 -- QRP-L #2507, SKCC #91 www3.ns.sympatico.ca/ppike ___ 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] New K2
Looks like Christmas has arrived early as my K2 S/N 5627arrived last week... As soon as I get over jet lag, will be time to play some hooky from work and start building it. Paul W4MAY ___ 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] K2FCTR instructions
The instructions for the frequency counter probe are on page 45 of the Rev F K2 manual and the RF probe schematic is shown on page 9 of Appendix E. 73, Don W3FPR -Original Message- Where are the instructions for building the K2FCTR/Frequency Probe ? I have the kit but can't seem to find how to build. thanks kw5tx steve ___ 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] Antennas for KX-1
(1) Wire up in a tree, (2) Pac-12. Between those two, you're taken care of with the KX1. 73 de Alex NS6Y. On Jun 29, 2006, at 6:20 PM, J. Coote wrote: I've been following the 4-band antennas for KX-1 thread. Interesting and a real challenge for field operations. K2HYD's idea of a 51 foot antenna and counterpoise was helpful. Some additional thoughts- the ATU in the KX-1 is a little limited, as compared to other larger ATUs with more combinations, so we need antenna lengths which are relatively close to 50 ohms and nonreactive. The G5RV has already been done, but I am thinking of getting out my MFJ bridge thingie and trying flattop/feeder, or antenna/counterpoise length combinations (other than the G5RV) that will work well, and repeatably with the KX-1 internal ATU. Seems to me there have to be many flattop/feeder or antenna/ counterpoise length combinations. 73 Jay W6CJ ___ 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] OT - iMac Macintosh G5 for sale
Is this OK to post? I have an iMac G5, a little over a half a gig of ram, 17 inch screen, works great, photos on request, $700, rather see someone on the EleList get it, tired of the flakes on Craigs List, 73 de Alex NS6Y. ___ 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] KXAT1 calibration
Mike, You are doing the steps correctly - EXCEPT - after you see 'CAL' in the K2 menu, exit the menu by tapping the menu button twice (be certain you get back to the frequency display). The ATU will now be locked into the CAL state. Then press the MENU and BAND buttons together to enter tune mode - the display should indicate the power output with the KXAT1 installed (it shows 'tun' with only the base KX1). Tap any button to exit the TUNE mode. After you are done with the calibration, go back into the menu and set the KXAT1 to tun so it will tune the antenna when you press the MENU and BAND buttons. 73, Don W3FPR -Original Message- Following my interpreation of the calibration steps, I tap menu to gain ATU. I rotate the VFO switch to find CAL. Now my understanding is to hold both Menu and Band while still in CAL to enter TUNE. If that's correct I have a problem. I can not access Tune while in CAL. I can use the VFO to go to TUNE, but that's not using the Menu and Band switches, which I interprate as no longer being in CAL. Is that correct?? Boy, am I confused. Any help would be appreciated. 73 Mike K4ELV ___ 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] first checks resist. kx1
The '1k' means that any resistance reading between 1k and infinity is acceptable. Readings below 1k are an indicator of a problem. Similarly, '50' means any resistance below 50 ohms are good, but anything above 50 is not good. Substitute other numbers for the '1k' and '50' as required. You often find better results if you use a fixed range on your DMM rather than using the auto-ranging. 73, Don W3FPR -Original Message- The more than and less than are a bit confusing to me so can someone tell me if the following are within tolerence? ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] KSB2 and microphone gain
I just completed a number of mods for the SSB module, described by KI6W
('Improving the Performance of the KSB2'), by DF7KHK (increase of audio
compression) and by DJ3FR (change R8 and R10 to 560 Ohm). After these
modification I played a bit with the radio. During a contest last
weekend I noticed that the SSB signal is fine. When listening to my own
microphone signal (SSBA set to BAL), I noticed that the audio level
varies by the band chosen (listening to the audio with a headphone). As
with the SSBA set to BAL the output of the KSB2 is directly fed into the
IF of the K2 receiver, I would expect a more constant level. My test
results (using the S-meter as an indication for the signal strength) below:
band signal strength
160m S9+40
40m S9
30m S9
20m S7
17m S8
15m S9
12m S9
10m S9
As you can see:
the signal is very strong when the K2 is set to 160 meters and
relatively weak at 20 meter. I am not (yet) complaining, just very
curious how this difference can be explained.
(When I have some time again I want to perform the same tests, but than
transmitting into a dummy oad and using an Icom 706 as a monitor receiver).
Piet, PA1PM
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[Elecraft] K2/100SSB partial disassembly/assembly help
I just received a terrific pre-built K2/100/SSB unit. It works wonderfully, but it would appear that I need to get inside and fiddle with the front panel jumpers to configure the microphone. I have an appropriate kenwood 8-pin mic and when plugged-in - it simply ignores it. I have checked the firmware menu settings and they appear good. However, being fat fingered and mechanically incompetent, I am reticent to start pulling modules out. I took out enough screws out to get the top cover loose, and the front panel loose, but I can't determine from the manual(s) if the front panel pulls UP or pulls OUT from the main assembly. The rig seems to work so beautifully that I'm terrified of pulling out wires, etc. and never getting it back into working shape. I noticed that the little machined rectangular screw holders came loose and I had to get my hemostat out and gingerly get them back into place before I could get all the covers screwed into place. Anyone want to point me in the direction of disassembling enough of the radio so I can configure the microphone jumpers?Yes, the manual is a good place to start, but it just says to take the front cover off and set the jumpers... Regards, Mark Stevens - N5EAT ___ 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] K2/100SSB partial disassembly/assembly help
P 40 41 of the K2 manual walks you through the process of hooking the display control boards together and to the main (RF) board. Use that as the final guide. To get the display off, you'll have to take a few screws out and just pull forward. Make sure you remember to get the screw that holds the control board to the display board. If you have the DSP or AF, that may have to be unplugged / unscrewed as well. - Keith KD1E - - K2 5411 - -Original Message- From: Mark I just received a terrific pre-built K2/100/SSB unit. It works wonderfully, but it would appear that I need to get inside and fiddle with the front panel jumpers to configure the microphone. ___ 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] K2/100SSB partial disassembly/assembly help
Mark, OK, there needs to be a document 'How to disassemble your K2' for those who purchased the K2 already built. Sure the instructions are there in the manual, but they are spread out over the entire manual since that is something that is learned in pieces during the build process. Try this set of instructions: - The process to get to the mic configuration header is to remove the top cover or KPA100 (6 screws). Next, check to see if it has the KDSP2 or KAFT2 installed (to the left, oriented vertically, behind the control panel) - if so, remove the screw located near the center of that board (if it is the KDSP2, you will have to remove the outer board first to get to the fastening screw - just pull that out of the header pins observing proper anti-static procedures). After removing the screw, you can pull the board out by moving it toward the rear of the K2. There are two screws holding the control board to the front panel - if you look down between the two boards, you will see the hex standoffs - remove the screws from inside the K2 (or 1 screw and 1 standoff if you had the KAF2 or KDSP2 installed). Now remove the 4 screws holding the Front Panel (located on the outside covers) and pull the Front Panel and its board straight out to the front. The mic configuration header is located on the back of the front panel near the mic jack. It takes more effort to put the process in words than to do it. Do it once and you should be a pro, it is not difficult. Compare the mic header wiring with the listing of common ham mics in the KSB2 manual. If you did not receive documentation with your K2, you can download the manuals from the Elecraft website as .pdf files. Be aware that many Icom mics have electret elements and need a resistor from 5 volts to the AF mic pin - this resistor is commonly soldered to the back of the mic jack if it is needed. You will have to determine the properties and pinout for your particular mic (it would be nice if they were 'standard', but alas, there is a large variety of differences). I can only help on the K2 side. 73, Don W3FPR -Original Message- I just received a terrific pre-built K2/100/SSB unit. It works wonderfully, but it would appear that I need to get inside and fiddle with the front panel jumpers to configure the microphone. I have an appropriate kenwood 8-pin mic and when plugged-in - it simply ignores it. I have checked the firmware menu settings and they appear good. However, being fat fingered and mechanically incompetent, I am reticent to start pulling modules out. I took out enough screws out to get the top cover loose, and the front panel loose, but I can't determine from the manual(s) if the front panel pulls UP or pulls OUT from the main assembly. The rig seems to work so beautifully that I'm terrified of pulling out wires, etc. and never getting it back into working shape. I noticed that the little machined rectangular screw holders came loose and I had to get my hemostat out and gingerly get them back into place before I could get all the covers screwed into place. Anyone want to point me in the direction of disassembling enough of the radio so I can configure the microphone jumpers?Yes, the manual is a good place to start, but it just says to take the front cover off and set the jumpers... Regards, Mark Stevens - N5EAT ___ 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 VFO band to band accuracy?
I recently added a CW tuning indicator to my K2 (a very useful addition). The other night I was listening to W1AW code practice and wanted to see how well I picked it up one each of the bands on which code practice is sent. Tuning to W1AW on 160m, the side tone of the W1AW signal was essentially right at 600 Hz, as indicated by the CW tuning indicator. Switching to 80m and tuning to the W1AW frequency, there was a slight but noticeable difference in side tone and I had to tune up about 20 Hz to be in the center of the CW tuning indicator band width. On one of the other bands on which I could pick up W1AW (either 20m or 40m, I don't recall which one), the difference in side tone when tuned to the W1AW frequency was even more noticeable, and the CW tuning indicator didn't even light up until I tuned up about 40Hz. So, either W1AW's transmitting frequency accuracy isn't very good (not likely), or there is this noticeable variation in VFO frequency display accuracy from band to ! band in my K2. The difference is not very large (max of about 40 Hz) and is really not a problem, but it's enough that it's clearly detectable, both audibly and with the CW tuning indicator. Has anyone else noticed this, and is there anything I can do to get the tuning accuracy better across all of the bands? Thanks Bob W1SRB ___ 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] K2/100SSB partial disassembly/assembly help
Don, You are so correct and most of us who have built them are all to framiliar with the process. Since Mark is going to use a Kenwood microphone there might not be any need to pull the front panel, just the control board. (Unless the builder soldered the jumpers.) Taking a leap of faith, it should (hopefully) be just pulling off the existing header and jumpering across the pins with standard jumpers that are available at Radio Shack everywhere. Regards, Joe N9JR - Original Message From: Don Wilhelm [EMAIL PROTECTED] To: Mark [EMAIL PROTECTED]; elecraft@mailman.qth.net Sent: Friday, June 30, 2006 1:33:39 PM Subject: RE: [Elecraft] K2/100SSB partial disassembly/assembly help Mark, OK, there needs to be a document 'How to disassemble your K2' for those who purchased the K2 already built. Sure the instructions are there in the manual, but they are spread out over the entire manual since that is something that is learned in pieces during the build process. ___ 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 VFO band to band accuracy?
I remember the day when 1000 Hz readout was considered very good. That got you close enough that you could find the net or your scheduled QSO. Xtal calibrators told us where the band edges were and we were in good shape. Then came digital displays with resolution to 100 Hz. Wow! Was that slick. Now our rigs display frequency to 10 Hz. I'm not convinced having that additional resolution is worthwhile. It may even be distracting. We tune WWV, the display says 9.999.94 and somehow we feel we're off frequency. Do you remember the days when we tuned in a signal based on how it sounded rather than based on what the display said? - Keith KD1E - - K2 5411 - -Original Message- From: Solosko, Robert B (Bob) ... Switching to 80m and tuning to the W1AW frequency, ... I had to tune up about 20 Hz to be in the center of the CW tuning indicator band width. On one of the other bands ... the difference ... was even more noticeable, ... about 40Hz. ___ 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 VFO band to band accuracy?
Robert, First, W1AW frequencies may vary from time to time - I have found the frequency on 14 MHz off as much as 40 Hz from their nominal frequency in the past few months - I don;t know if they have corrected that yet or not. 40 Hz accuracy is not too bad at all! It has not been long ago when we had analog dials, and if the accuracy was 1 kHz or better we considered that it was quite accurate. Transceiver dials are just not precision frequency counters (my precision frequency counter cost more that a K2 and it was used). Due to digitizing steps and the fact that the dial readout is limited to 10 Hz steps, the best expected dial accuracy for the K2 should be in the vicinity 20 to 30 Hz. It is even possible to get it within 10 Hz with a lot of work. Add to that the region of uncertainty for the CW tuning indicator (which will vary with signal strength - mine is about 30 Hz wide) and you can easily add up a 40 Hz uncertainty error with only a 10 Hz inaccuracy in the K2 dial reading. If you want to try to improve your K2 dial accuracy, check out the K2 Dial Calibration article on my website http://w3fpr.qrpradio.com - that will give you several resources as well as the procedure for accurately setting the K2 dial. The variation from band to band comes as a result of the K2 displaying the calculated result of the VCO setting that is stored in EEPROM. The K2 does not actually measure the frequency on a real-time basis. The calibration process (CAL PLL and CAL FIL) determines the dial readings, and these are in turn dependent on the accuracy you achieved when setting the 4 MHz reference oscillator. Use the N6KR method for the greatest accuracy, but you must tune the reference standard station in exactly to be successful. Note that the 4 MHz oscillator only needs to be accurate during the CAL PLL and CAL FIL process, it does not have to remain stable for subsequent accurate dial readings because the dial readings do not depend on the 4 MHz reference for a real-time reference. 73, Don W3FPR -Original Message- I recently added a CW tuning indicator to my K2 (a very useful addition). The other night I was listening to W1AW code practice and wanted to see how well I picked it up one each of the bands on which code practice is sent. Tuning to W1AW on 160m, the side tone of the W1AW signal was essentially right at 600 Hz, as indicated by the CW tuning indicator. Switching to 80m and tuning to the W1AW frequency, there was a slight but noticeable difference in side tone and I had to tune up about 20 Hz to be in the center of the CW tuning indicator band width. On one of the other bands on which I could pick up W1AW (either 20m or 40m, I don't recall which one), the difference in side tone when tuned to the W1AW frequency was even more noticeable, and the CW tuning indicator didn't even light up until I tuned up about 40Hz. So, either W1AW's transmitting frequency accuracy isn't very good (not likely), or there is this noticeable variation in VFO frequency display accuracy from band to ! band in my K2. The difference is not very large (max of about 40 Hz) and is really not a problem, but it's enough that it's clearly detectable, both audibly and with the CW tuning indicator. Has anyone else noticed this, and is there anything I can do to get the tuning accuracy better across all of the bands? Thanks Bob W1SRB ___ 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 -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.1.394 / Virus Database: 268.9.7/379 - Release Date: 6/29/2006 ___ 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 disassembly Instructions - Thanks for the excellent replies
All: I appreciate so much the thoughtful replies to my request to help me jumper my K2 so I can use a mic. The original owner had put the DSP module in as well, and I was surprised to see how full the radio was when I took the top off. He also said he thinks he set it up in the default Kenwood mode, but the mic I have (an MC-43s) is completely ignored by the radio. Some of the other past posts have led me to believe that the mic is not wired for the rigs config vs. something being wrong with the radio. Thanks again. Mark Stevens - N5EAT ___ 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] K1 Ready!
Now my K1 #2215 is ready, working fine but yet need some fine tuning.. I have reactivated an old blog, http://krerik.blogspot.com/ there you can see a few pics... More to come when i have been on air later this summer! 73 / CU de SM5KRI Krister Chris -- [ [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] subscription cancellation
please remove me from list ___ 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] KX1 Transmitting Problem
Hey Guys, So last weekend I posted an message asking for help with my KX1. After taking the top off, I thought I found the problem so I corrected it. It appears I did not fix the problem for long. Yesterday, after calling CQ a few times, the same problem reared its ugly head again. The problem: The radio will sporadically transmit (almost constantly) a series of dahs for no apparent reason. After this happened last weekend, I opened the case, and I thought the leads for the key jack ( J3 ) were not trimmed enough causing a short when the case was closed. So I trimmed the leads and all was well for a week. I have had the rig for about a month now and it has operated flawlessly for several weeks ( made several contacts ). So it appears this problem has developed over time. Any suggestions would be greatly appreciated. Jason n9avg ___ 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] Resistor Types on control board
Are the 1% resisrors R7, R8, R9, R10 metal film resistors? Mike N6IMF ___ 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] Resistor Types on control board
Mike, I cannot give an absolute answer, but since most 1% resistors are metal-film type, the answer I can give is 'quite probably'. I am just wondering why you have asked. 73, Don W3FPR -Original Message- Are the 1% resisrors R7, R8, R9, R10 metal film resistors? Mike N6IMF ___ 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] Another KX1 is on the air
KX1 s/n 1517 with a KXAT1, my first kit in many years, was built over several evenings and days a few hours at a time. I even rolled my own toroids. Worked like a champ the first time! I'm hooked! 73, Lou, WØFK ___ 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 Power Control Settings Using a QRO Amp
The K2/100 has two ALC circuits. One is found on the K2 Control Board (MAX534). This ALC works in the CW mode. The other is found on the KSB2 Board and works in the SSB mode. This is the Tracking Automatic Level Control (TALC). Tuning up a QRO amp by holding the K2 TUNE and RF/ALC buttons (in any mode) produces the correct amount of CW RF power from the K2/100 for the desired QRO output. To obtain the same desired SSB peak power output it is necessary to turn the POWER control down. I have the PSK31 KSB2 ALC Time Constant Change Mod installed, but John Grebenkemper (KI6WX) says he does not think the change in time constant would be an issue. He says this mod was designed to increase the hold time for the TALC to what is used in most transceivers. I understand the complexities of measuring peak sideband power so it can be assumed there is a certain amount of error in the reading. With that said I still wonder why these two ALC circuits don't more closely track each other for the same POWER control setting. Thirty five watts in the CW mode results in 1000 watts of output in my case. Fifteen watts of modulated SSB results in 1000 peak watts. I would like to know if others using QRO amps find similar amount of variance in the POWER control. Thanks. Roy Morris W4WFBNo virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.394 / Virus Database: 268.9.7/379 - Release Date: 6/29/2006 ___ 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] Another KX1 is on the air
On Fri, 30 Jun 2006, Lou Laderman wrote: KX1 s/n 1517 with a KXAT1, my first kit in many years, was built over several evenings and days a few hours at a time. I even rolled my own toroids. Worked like a champ the first time! I'm hooked! Congratulations! You might want to add it to the Elecraft Online Database at http://www.zerobeat.net/qrp/k2data.html 73,Thom-k3hrn www.zerobeat.net Home of QRP Web Ring, Drakelist home page,Drake Web Ring, QRP IRC channel, Drake IRC Channel, Elecraft Owners Database www.tlchost.net/hosting/ *** Web Hosting as low as 3.49/month ___ 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
