Re: [Elecraft] k2/100 for 380 Euros on ebay? - Busted!
Hi Not very long time after I (and most propably some others too) reported eBay this bulb head's get-rich-fast idea is Busted. eBay works fast. 73 and let's keep being alert Ben ___ 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] Proper Adjustment of K2 AGC
A couple of people have posed a question to me off the reflector that speaks to a point I think is important: when checking to see if the volume changes when switching the AGC on and off, do it with *no antenna*! Best, a 50 ohm dummy load connected! Background QRN, even up on 10 meters, can easily trigger the AGC, especially with the preamp turned on. In that case, hearing the audio level increase when AGC is turned off is normal, indicating normal AGC operation. Ron AC7AC ___ 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] kpa100 not tracking power with K2
On Mon, 14 Aug 2006 22:04:16 -0400, Don Wilhelm [EMAIL PROTECTED] wrote : Pat, If this condition is confined to 40 meters, check out the KPA100 specific information regarding the position of RFC10 (the one soldered to the antenna jack) on Tom Hammond's website www.n0ss.net . Already moved. If it happens on all bands, then you have another problem, so ask again and provide more information and we can lead you on a path of 'problem chasing'. First you will have to tell us whether the 'wattmeter' you refer to is an external wattmeter or the internal K2 indication. Both. Happens on all bands. Relative to an external wattmeter the power the K2 shows is wrong and the power the KPA100 outputs in some cases is not ok. Max out on the lowbands is almost 150 watts and pulled current is above 20 amps. On 20m and above output is more normal, output is never above 100w. For example the K2 reads 80, but the external wattmeter reads 100w. On 15m output is below normal. The K2 will read 110 and the max out is 90w. Approachs normal at around 70w. On 10m ouptput tracks like 20m except max out is about 110w. Pat N8vw 73, Don W3FPR -Original Message- Having problems with my kpa100 not tracking power with respect to the power knob on the K2. For example on 40m if the K2 says 40w the wattmeter shows 100 watts and the current meter on the power supply confirms the latter with ~18 amps. The leads me to suspect the power control circuit, but I'm unfamiliar with its operation. Any help would be appreciated. Pat N8vw ___ 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] Amplifier for use with Heil products and K2
What amplifier is recommended for use with a Heil headset with the #5 element? I seem to be missing this in the discussions currently ongoing. Thanks and 73, Charlie, W0YG.. ___ 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] Ten meters propagation
Hi 10 meters has been open through Europe for some time and occasionnally as far as South America : yestesday, at 18 h UTC, a couple of PY stations were coming in with decent signals, around 56 to 58. Called them with my K2 and 10 watts (antenna : 6 el log yagi) but no reply and eventually got them with 80 watts on the IC 751. Was it an effect of the gray line, though a bit early ? From Europe, it seems the path is rather open to the South West than to the North West. 73 Jacques de F9OJ K2 #0937 ___ 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] 10 meter propagation
Hi 10 meters has been open through Europe for some time and occasionnally as far as South America : yestesday, at 18 h UTC, a couple of PY stations were coming in with decent signals, around 56 to 58. Called them with my K2 and 10 watts (antenna : 6 el log yagi) but no reply and eventually got them with 80 watts on the IC 751. Was it an effect of the gray line, though a bit early ? From Europe, it seems the path is rather open to the South West than to the North West. 73 Jacques de F9OJ K2 #0937 ___ 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] Support Staff on Reflector BB?
Not only the support and development staff, but also Wayne and Eric (Elecraft principals) often provide answers too. 73, Don W3FPR -Original Message- Yes. You might also get answers from those of us on the development staff as well. On Aug 14, 2006, at 6:40 PM, Fred (FL) wrote: I'm curious: Do any of Elecraft's support staff, routinely answer builder questions posted on reflector BB? Or is it primarily other builders and hams? Or put another way, are any of the responses on the email Reflector, from Elecraft's support technical staff? - Jack Brindle, W6FB ___ 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 CW tuning indicator?
W1SRB wrote: I recently added a CW tuning indicator to my K2.., Tell me more about this! I'd love to have one of these. I have real trouble zero-beating CW sigs using the standard K2 method, especially when the sig is weak. Cathy ___ 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] Kenwood mic's
Mike, I have been using a Kenwood MC-80 mic. I bought from a local ham. While It is not a hand mic, I use it where ever the radio goes. I don't power it from the radio it has a battery case and I use that to power the mic. Function keys, transmit lock, and a level that seems to match the radio. Something to think about. Richard Kent, WD8AJG ___ 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] kpa100 not tracking power with K2
Pat, Something strange is happening here. First the facts of 'the case': 1) The KPA100 wattmeter should not be frequency dependent, and neither should your external wattmeter if it is functioning correctly. 2) Your KPA100 wattmeter apparently needs to be calibrated - use a good 50 ohm resistive dummy load and start over at the point where you adjust the trimmer cap - caution, a dummy load that is reactive will give you an incorrect indication of the null point. 3) If you use your external wattmeter to set the KPA100 forward power level, then the K2/100 indication should track with that external wattmeter afterwards. 4) Be aware that an external wattmeter may be in error by as much as 10 or 20% OF THE FULL SCALE READING! This is the typical spec for wattmeters. Be careful of the scale, on a 100 watt scale, that means that the error could be as large as 20 watts (at any point on the scale), so do not use a 100 watt scale to read a 20 watt level, use a 20 watt scale where the maximum error is only 4 watts. I cannot stress this subtle point strongly enough. Even a Bird wattmeter is speced at 5% of full scale, and that is only guaranteed after calibration! You may have something else wrong there too, but as first steps, check the components in the wattmeter section and re-do the wattmeter calibration. Then see if the power control becomes proper. 73, Don W3FPR -Original Message- If it happens on all bands, then you have another problem, so ask again and provide more information and we can lead you on a path of 'problem chasing'. First you will have to tell us whether the 'wattmeter' you refer to is an external wattmeter or the internal K2 indication. Both. Happens on all bands. Relative to an external wattmeter the power the K2 shows is wrong and the power the KPA100 outputs in some cases is not ok. Max out on the lowbands is almost 150 watts and pulled current is above 20 amps. On 20m and above output is more normal, output is never above 100w. For example the K2 reads 80, but the external wattmeter reads 100w. On 15m output is below normal. The K2 will read 110 and the max out is 90w. Approachs normal at around 70w. On 10m ouptput tracks like 20m except max out is about 110w. Pat N8vw ___ 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 CW tuning indicator?
Hi I installd it both in KX1 and K1. Check following page. http://www.n0ss.net/ Cathy James wrote: W1SRB wrote: I recently added a CW tuning indicator to my K2.., Tell me more about this! I'd love to have one of these. I have real trouble zero-beating CW sigs using the standard K2 method, especially when the sig is weak. Cathy ___ 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 -- 73 de aki, ja1nlx [EMAIL PROTECTED] http://www.asahi-net.or.jp/~yy7a-ysd/ http://ja1nlx.exblog.jp/ ___ 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] Proper Adjustment of K2 AGC
- Original Message - From: Don Wilhelm [EMAIL PROTECTED] To: Roy Morris [EMAIL PROTECTED]; elecraft@mailman.qth.net Sent: Monday, August 14, 2006 11:44 PM Subject: RE: [Elecraft] Proper Adjustment of K2 AGC Thanks Don. Yes, I had a senior moment on the resistor value. I think the procedure for setting the AGC threshold should be incorporated in the manual. This is very important in obtaining optimum performance from the K2 receiver. Thanks again for your excellent info. Roy You must have misread something (or did a typo). The stock value for Control Board R1 on the older boards is 51k. Roy, You must have misread something (or did a typo). The stock value for Control Board R1 on the older boards is 51k. A 50k pot will do the task for you, or a 20k pot in series with a 33k resistor. I typically find that a 39k, 36k or 33k resistor will set the proper level, but I have also found that the stock 51k value is OK in some cases. I would hesitate to go below 33k at R1 because as I have mentioned before, the S-meter settings (and readings) become 'funny' (that is tech-speak for too critical). I have not yet discovered a concise set of parameters for determining what the value should be, but I do know that the exact output from the 8 volt regulator is a large factor - if you have 8.2 volts or more from the regulator, the stock value is likely correct. I suspect (but cannot substantiate nor quantify) that there are minor dfferences in the gain vs. AGC voltage at the IF amp chip that also come into the picture. Your procedure is correct, but I would recomend the smaller value for the pot - the 100k will work, but the adjustment will be more 'touchy' compared with a smaller value. Set it to the point where the AGC ON noise is just barely discernable from the AGC OFF. 73, Don W3FPR -Original Message- After reading Don's (W3FPR) AGC procedure, curiosity got the best of me. I set up my parameters as he stated and was surprised to find a considerable difference between AGC ON and AGC OFF with AGC OFF being considerably louder. I am going to remove R1 (71K) from the Control Board and substitute a pot to find the proper resistance value. I understand this pot should be adjusted to where the AGC ON and OFF should be just about the same with the RF gain set fully clockwise. If I remember correctly a 100K pot should be used to establish the value of R1. Is this the correct procedure? Roy Morris W4WFB -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.1.405 / Virus Database: 268.10.10/419 - Release Date: 8/15/2006 -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.405 / Virus Database: 268.10.10/419 - Release Date: 8/15/2006 ___ 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] Kenwood mic's
I use a Heil mic which I ordered directly from Heil. It is a great mic. I told them the rig I was using and they made sure I had the correct setup. Bill K9YEQ K2-35 5279; KX1-35/3080 ___ -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Richard Kent Sent: Tuesday, August 15, 2006 7:53 AM To: Elecraft@mailman.qth.net Subject: RE: [Elecraft] Kenwood mic's Mike, I have been using a Kenwood MC-80 mic. I bought from a local ham. While It is not a hand mic, I use it where ever the radio goes. I don't power it from the radio it has a battery case and I use that to power the mic. Function keys, transmit lock, and a level that seems to match the radio. Something to think about. Richard Kent, WD8AJG ___ 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] FS: KSB2+KNB2
Dears, as I am pure CW op. I decided to tune nor optimize my K2 for maximum CW performance ;) According to that I have for sale KSB2 (ssb module) and KNB2 (noise blanker) for K2. Its in perfect condition, already assembled and aligned of course and ready to plug and play in any of K2. Let me know off-topic if anybody will be interested in these options. 73, Petr OK1RP Petr Ouředník [EMAIL PROTECTED] www.qsl.net/ok1rp ___ 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 ALC Mod
Some time ago I installed the PN amp mod to my KSB2 board to increase the 10 meter SSB output on my QRP K2. Later I added the KPA100. John (KI6WX) said the KSB2 amp mod was no longer needed since adequate output is obtained on 10 meters. I have since removed this PN amp mod. However, at the time I had the mod installed I had to do another mod suggested by Gary Surrency to keep the balanced modulator from overdriving the ALC when using PTT. This KSB2 mod replaces R9 with a 1.5K resistor and a 1K resistor is placed across a cut trace between Q1's base and pin 6 of P1 connector. I am wondering if I should undo this mod since I no longer have the PN amp mod. I am not aware of any adverse effect on my SSB signal. Roy Morris W4WFBNo virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.405 / Virus Database: 268.10.10/419 - Release Date: 8/15/2006 ___ 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: power out issue on some (but not all) bands
Colleagues, My rather olde K2 (SN 79) seems to have developed a power issue. I notice recently that my wattmeter seemed to be reading a bit low on 17 metres and thought it warranted further investigation. So, I set the displayed power out to 5 watts on each band and here's what I got: 80 - 5.0 40 - 5.0 30 - 5.0 20 - 5.0 17 - 0.7 15 - 2.5 12 - 4.5 10 - 2.0 At first I thought something was wrong with my wattmeter (Oak Research WM-2) so I checked with an attenuator and Boonton power meter and my measurements are spot on. On every band the power meter (on the radio) reads at 1/2 of full scale. Any suggestions? Thanks for the help, Ron -- Ron Hahn - EI2JP Grid: IO52GA CQ: 14 ITU: 27 IOTA: EU-115 FISTS: 10883 QRP-ARCI: 12584 G-QRP: 11968 Club Web Site: http://www.ei1karg.com QSL Info: http://www.qrz.com/detail/EI2JP Mob. +353-86-600-5499 ___ 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: power out issue on some (but not all) bands
Hi Ron. If you're seeing reduced output on 17-meters and higher frequencies, it might be an indication that only one of the two final transistors (2SC-1969) is functioning. 73, de John, KD2BD Visit John on the Web at: http://kd2bd.ham.org/ . . . . __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.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] New Picture Gallery Additions on Elecraft Site
We have just updated our Elecraft Picture Gallery with a super group of new customer pictures. The pictures include custom machined paddles for the KX1 by WB9LPU, homebrew SO2R control boxes, SOTA mountain toping, FYBO KX1 Pics and K2 based DXpeditions to VK9X, VK9C, St. Martin, Key West, 8R1 and a host of other locations. Also check out our two featured pictures, including one of the newly discovered 'Cafe K2' in Sweeden. :-) They reached via the 'Picture Gallery' link on the upper right side of the main page at http://www.elecraft.com Special thanks to picture submitters: DL2KCD, DF4KV, DL3KMS, DL3ALX, DL7KCM, DL8BAG, SM7KJH, WB9LPU, DL1JET, K1EV, 6Y5/KN5G, 8R1ZUM (K7ZUM), DG2KAL, OE3ZK, DG8KAD (and bird), KD0RC, DL7JF, F5VJC (GM3SKN), KF6C, K1JD, KI4DGH, KT5X , K7TQ, KA3IXF, HB9AFI, N6IZ, N8XE, NY9H, PA3VBT, T32QS (N6TQS), W1TF, W6IZT, WA5KPA, WA7CS, SM5CBC, WH7N, W0YG (VK9CG, VK9XG) and DL2DE. Great stuff guys! Thanks again for sending these pictures in to us. 73, Eric WA6HHQ -- _..._ ___ 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] KDSP2
I just built the KDSP2 and found that the SSB Low Pass filter setting on filter 1 does not work as expected. The noise bandwidth is reduced instead of being wide. I have set the high frequency cutoff to 2.5 KHz for now. Any settings above 2.5 KHz also do not appear to function properly. Is there a known solution to this problem ? 73, Bob Johansen WB2SRF ___ 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] KDSP2
Bob, I am not certain I understand the description of the problem. You say it does not 'function properly', but if you can explain what it IS doing that you believe to be improper, we may be able to provide an answer for you. 73, Don W3FPR -Original Message- I just built the KDSP2 and found that the SSB Low Pass filter setting on filter 1 does not work as expected. The noise bandwidth is reduced instead of being wide. I have set the high frequency cutoff to 2.5 KHz for now. Any settings above 2.5 KHz also do not appear to function properly. Is there a known solution to this problem ? 73, Bob Johansen WB2SRF ___ 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] Logarithmic K2 Keyer Speed Pot Replacement?
Sverre, LA3ZA, documented a mod to modify the speed range of the K2 Keyer pot at http://www.qslnet.de/member/la3za/K2_speedPot.html. As an alternative is there a direct replacement logarithmic pot that could be substituted for the linear pot supplied with the kit? Darrell VA7TO K2#5093 -- Darrell Bellerive Amateur Radio Stations VA7TO and VE7CLA Grand Forks, British Columbia, Canada ___ 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] Kdsp2 problem
Hi Don, The problem that I am experiencing is that when I completed the DSP board last night, I noticed that the default setting of the SSB DSP filter 1 (low pass filter) did not sound like its high frequency audio bandwidth was wide enough. The filter setting 2 default setting of 2.5 KHz had a higher frequency of noise content. When I tried to change the upper cut off frequency following the instuctions on page 26, I noticed that any setting greater than 2.5 through LPF resulted in a narrower noise bandwidth although the display changes normally according to the instructions. I have experimented with it further today and am experiencing the same problem. Also I have noticed that when I advance the low pass filter cutoff from display S1 00 2.5 to S1 .45 2.5 it sounds like I have selected a CW filter from the change in the noise bandwidth. S1 .40 2.5 sounds like the correct bandwidth. It is strange that the low frequency cutoff filter characteristics change very abruptly over 400 Hz. ___ 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] Re: band-passfilter location in SSB transmit chain
Peter, Wayne To add to the discussion of TX spurious signals: I did perform extensive (spectrum) measurements on the TX spectrum at 28MHz and found that (despite the class A / High IMD behavior of the TX buffer Amp) some in band signals are generated in this amplifier. Example: TX = 29.0 MHz Spurious found (only -40 to -50 dBc!): 28.51 MHz Generated by: 2 * VCO - 4 * BFO = (2 * 24.085 - 4 * 4.915) Spurious level is affected by the TX-ALC voltage and is worst at higher TX power output. Also verified that this mixing takes place in the TX-buffer and not in the (ne601) mixer itself and is due to the broadband design of this TX-buffer (which is of course difficult to circumvent in this architecture chosen). Placing an extra set of BPF's just after the TX-mixer would solve the issue, but is not achievable in the present board layout. Of course this would not improve the SSB/audio IMD as Wayne pointed out. Because I use the K2 as driver of a 1KW+ VHF amplifier I have been very keen in getting spurious signals as low as possible. Only way I could get the spurious further down (60/70dBc) is to add an extra ERA9 amplifier (+10 dB gain) just before the transverter IF output but within the TX-ALC loop. In such a way making sure the signal level out of the TX-mixer and subsequent TX-buffer amplifier are as low as possible. Cheers, Carel,pc5m -Original Message- From: [EMAIL PROTECTED] [mailto:elecraft- [EMAIL PROTECTED] On Behalf Of wayne burdick Sent: Monday, August 14, 2006 8:59 PM To: PE1E Cc: 'Elecraft Reflector' Subject: [Elecraft] Re: band-passfilter location in SSB transmit chain PE1E wrote: I was told that the absence of filtering between Tx mixer and Tx buffer amp could cause annoying IM products. ( The bandpass filters in the K2 are behind the Tx buffer amp., while in at least one of my other tranceivers in use here I see the bandpass filter straight behind the Tx mixer without interfacing amp. ). Could this observation contribute adversely to the SSB Tx audio quality ( in-band IM3) or do I see a ghost ? Peter, The TX buffer amp is operating class A, and any IMD it contributes will be completely negligible compared to the IMD contributed by the class-AB final amp. So, positioning the bandpass filters after the buffer should have no impact on observed IMD. If you see any more ghosts, let me know :) 73, Wayne N6KR --- 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 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] Re: band-passfilter location in SSB transmit chain
pc5m, Carel wrote: I did perform extensive (spectrum) measurements on the TX spectrum at 28MHz... Example: TX = 29.0 MHz Hi Carel, Thanks for the data. While the K2 was never intended to cover the entire 10-meter band (we spec'ed it in the manual at 28.8), it may be possible to attenuate the indicated product at 28.51 with a modification to the buffer amp. Or, it may be that the amp itself is not the cause, but is reflecting a mismatch back to the TX mixer. A better match may be called for in this case. The way to check these possibilities is to temporarily terminate the mixer and/or the buffer with a 51-ohm resistor, then check the spectrum again. In either case, a 3 to 5 dB pad at the buffer's input or output may substantially reduce undesired products. Of course the gain would have to be made up after the pad (or after the band-pass filter). Alternatively, you could replace the present buffer with a dual amp (LT1253, I believe) and configure it for differential output drive using a broadband transformer. The K2 has been around for quite awhile, and it's nice to see operators pushing the envelope with it :) Our policy has always been to keep track of customer modifications (as well as our own) for possible future inclusion in the kit. A recent example is the keying modification, which resulted in the K2 having among the cleanest keying envelopes of any commercial transceiver. 73, Wayne N6KR ___ 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] Ordered my K2!
I just ordered the K2, KPA100, KSB2, K160RX, and K60XV. The most complicated project I've built heretofore was a Ten Tec 1340 so wish me luck as I delve into (gulp!) this project! Bill NZ0T ___ 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] Ordered my K2!
Bill congrats and welcome to the brotherhood. Just take you time and be neat. It is also important to set up a nice clean work area where you can inventory the parts and get ready to build and not have to clean up after each session. The gang here is great if you have any questions during the build post it here and you will get multiple answers in minutes. You'll never be sorry, I've had mine for 3 or 4 years and wouldn't trade for the world. In addition a number of friends who operated it decided they needed one also. Good luck again. Gregg R. Lengling, W9DHI, Retired K2/100 SN 3075 http://www.milwaukeehdtv.org - Original Message - From: Bill Carpenter [EMAIL PROTECTED] To: elecraft@mailman.qth.net Sent: Tuesday, August 15, 2006 4:08 PM Subject: [Elecraft] Ordered my K2! I just ordered the K2, KPA100, KSB2, K160RX, and K60XV. The most complicated project I've built heretofore was a Ten Tec 1340 so wish me luck as I delve into (gulp!) this project! Bill NZ0T ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
RE: [Elecraft] Ordered my K2!
JUST REMEMBER SET UP The video camera and take pictures and shoot the movie than spend some time narrating it and add some back ground music then you can give the DVD out for Christmas presents and save money so you can buy even more elecraft goodies. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Bill Carpenter Sent: Tuesday, August 15, 2006 5:08 PM To: elecraft@mailman.qth.net Subject: [Elecraft] Ordered my K2! I just ordered the K2, KPA100, KSB2, K160RX, and K60XV. The most complicated project I've built heretofore was a Ten Tec 1340 so wish me luck as I delve into (gulp!) this project! Bill NZ0T ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] Ordered my K2!
Bill Carpenter wrote: I just ordered the K2, KPA100, KSB2, K160RX, and K60XV. The most complicated project I've built heretofore was a Ten Tec 1340 so wish me luck as I delve into (gulp!) this project! Good move, Bill. Take your time. No more difficult than what you've already done, just more of it. Do a parts inventory before you start building. Double-check everything as you go. Solder carefully. When you're all done and filled with pride for you accomplishment, you'll be insufferable like the rest of us! Most of all enjoy the building as much as the operating. 73, Gus Hansen, KB0YH ___ 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] Ordered my K2!
Bill, Despite the number of parts, it all goes together like any other kit, one part at a time. Don't rush and avoid working when you are tired if you are to avoid mistakes. If you feel you do not understand the written instructions, ask here on the reflector, lots of assistance is available. Enjoy the experience of building, you will be rewarded with a great transceiver. One more important point - be certain to read any errata sheets and mark your manual accordingly before starting. 73, Don W3FPR -Original Message- I just ordered the K2, KPA100, KSB2, K160RX, and K60XV. The most complicated project I've built heretofore was a Ten Tec 1340 so wish me luck as I delve into (gulp!) this project! Bill NZ0T ___ 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] Logarithmic K2 Keyer Speed Pot Replacement?
At 03:03 PM 8/15/2006, Darrell Bellerive wrote... As an alternative is there a direct replacement logarithmic pot that could be substituted for the linear pot supplied with the kit? Elecraft p/n E520003 or Mouser p/n 317-2080F-5K ___ 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] KPA100 v1.10 vs v1.09
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 I couldn't see anywhere in the 60M manual any mention of firmware above 1.09. So the question remains, what is the difference between these 2 versions of firmware? If I have 1.09, what do I gain by upgrading the firmware. - -- Phil Carter, WD8QWR QRPARCI #9986, CQRP #3 Fists #6514, FP #262 QCWA #32302 -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.2.2 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFE4kVbXRrUupd04PkRAve0AKCPVFUrj1rVr7Y7U6oM2lWTbZGRmACdGguT mZrGrhnoK2eKIfGsYDadqug= =zd86 -END PGP SIGNATURE- ___ 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] From Science at NASA, Backward Sunspot...
...ay be indicator of next Solar Cycle starting. Details at: http://science.nasa.gov/headlines/y2006/15aug_backwards.htm?list841773 73, Rod Ai7NN ___ 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] Logarithmic K2 Keyer Speed Pot Replacement?
Thanks for the part numbers Mike! Forgive my ignorance of audio taper pots, but would the audio taper pot spread out the slower keyer speeds or the higher keyer speeds. For some reason I was thinking I needed an inverse audio taper to spread out the slower keyer speeds. I been thinking to much again. Help! My brain hurts. :-) Darrell VA7TO K2#5093 On August 15, 2006 03:05 pm, Mike S wrote: At 03:03 PM 8/15/2006, Darrell Bellerive wrote... As an alternative is there a direct replacement logarithmic pot that could be substituted for the linear pot supplied with the kit? Elecraft p/n E520003 or Mouser p/n 317-2080F-5K -- Darrell Bellerive Amateur Radio Stations VA7TO and VE7CLA Grand Forks, British Columbia, Canada ___ 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] kpa100 not tracking power with K2
On Tue, 15 Aug 2006 08:53:22 -0400, Don Wilhelm [EMAIL PROTECTED] wrote : Pat, Something strange is happening here. First the facts of 'the case': 1) The KPA100 wattmeter should not be frequency dependent, and neither should your external wattmeter if it is functioning correctly. 2) Your KPA100 wattmeter apparently needs to be calibrated - use a good 50 ohm resistive dummy load and start over at the point where you adjust the trimmer cap - caution, a dummy load that is reactive will give you an incorrect indication of the null point. 3) If you use your external wattmeter to set the KPA100 forward power level, then the K2/100 indication should track with that external wattmeter afterwards. 4) Be aware that an external wattmeter may be in error by as much as 10 or 20% OF THE FULL SCALE READING! This is the typical spec for wattmeters. Be careful of the scale, on a 100 watt scale, that means that the error could be as large as 20 watts (at any point on the scale), so do not use a 100 watt scale to read a 20 watt level, use a 20 watt scale where the maximum error is only 4 watts. I cannot stress this subtle point strongly enough. Even a Bird wattmeter is speced at 5% of full scale, and that is only guaranteed after calibration! Don, I've done all this and taken it into account. I don't typically post unless I've spent several hours puzzling over a problem. You may have something else wrong there too, but as first steps, check the components in the wattmeter section and re-do the wattmeter calibration. Then see if the power control becomes proper. Here is what I think the problem is: U7 Pin 1 is listed as being between 0 and .8 volts on rx mine is 0 volts on transmit it is about whatever the supply voltage is, in this case 13.5v. Looking at the circuit, I see that it supplys voltage to Q5 and is part of the current sense. On transmit I measured zero volts on the emitter of Q5, TP1 and that end of R30. Seems like Q5 might be dead. I replaced Q5 and now U7 Pin 1 is about .5v on tx. However, U7 pin 7 is not right so guess Q4 might be suspect. Pat ___ 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] Hand Mic for K2
Hi, Dan, while not a hand mic, I use the Kenwood MC-60A desk mic with my K2. Got it on eBay for about 50-60% of the new price. Haven't had a lot of air time due to non-Ham obligations, but it seems to put out a decent signal. It has the up/dn keys pre-amp, and is wired per the K2 manual. From what I read on eBay, the older MC-60 is similar, except the MC-60 doesn't have the up/dn keys or pre-amp. 72 de N8PVZ ---bernie __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] Ordered my K2!
On Tue, 15 Aug 2006, Bill Carpenter wrote: I just ordered the K2, KPA100, KSB2, K160RX, and K60XV. The most complicated project I've built heretofore was a Ten Tec 1340 so wish me luck as I delve into (gulp!) this project! Best of luck.when you've finished it...log onto http://www.zerobeat.net/qrp/k2data.html You can add your K2 to the database. 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
Re: [Elecraft] Ordered my K2!
Good Luck! You will love your K2. Don't rush through any of the construction or testing steps. Never be afraid to ask any questions here on the list . This is the most supportive user community in Amateur Radio, in my opinion! If problems do develop, Elecraft support is the best. 73, Bill Allen WA5PB -Original Message- From: Bill Carpenter [EMAIL PROTECTED] Sent: Aug 15, 2006 4:08 PM To: elecraft@mailman.qth.net Subject: [Elecraft] Ordered my K2! I just ordered the K2, KPA100, KSB2, K160RX, and K60XV. The most complicated project I've built heretofore was a Ten Tec 1340 so wish me luck as I delve into (gulp!) this project! Bill NZ0T ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
RE: [Elecraft] Ordered my K2!
One time I watched Dr. Zahi Hawass, the Director General of Egypt's Supreme Council of Antiquities, do a demonstration of how the great pyramid was built. He showed workmen placing a limestone block on top of another block. He looked at the camera, smiled, and said, Just do that about 2.3 million more times and you have the great pyramid. Nothing to it! Fortunately, building a K2 doesn't involve heavy lifting. Just do it one step at a time. Elecraft even sends you the parts ready to install. No chipping, cutting or dressing blocks. Have fun! Ron AC7AC ___ 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] Ordered my K2!
On Tue, 15 Aug 2006, Ron D'Eau Claire wrote: Fortunately, building a K2 doesn't involve heavy lifting. Just do it one step at a time. Elecraft even sends you the parts ready to install. No chipping, cutting or dressing blocks. To say nothing of the fact that you are not buried inside the unit when it's finished. Thom www.baltimorehon.com/Home of the Baltimore Lexicon 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
[Elecraft] First K2 question
I just ordered mine and a question has already popped up in my fevered brain. Since the parts are arranged in different bags, one for each board, does it make sense to inventory and separate parts for each board? In other words, inventory and separate the control board parts and then finish the board. Once done, then proceed to an inventory/separation/finish of the front panel board and then so on. It seems to me it would cut down on clutter from parts that are not yet needed and create more usable space on my workdesk. ___ 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 K2 question
Hi Bill, I won't presume to speak for the Elecraft guys, but they are very good and sending any parts that might be missing, and very quick about it too, I might add. With that said, it would probably be best to only open the bags as you need them, to avoid mixing the parts up. If a part is missing in a later bag, you can generally work around it (not always though), but even if you can't they'll have the part to you in a week at the outside. If I remember correctly the resistors are taped together in the order they are installed (not sure about that, though). Have fun and keep us posted (what's your serial number?) Tom WB2QDG K2 #1103 -- Teamwork is a lot of people doing what I say. - Original Message - From: Bill Carpenter [EMAIL PROTECTED] To: elecraft list elecraft@mailman.qth.net Sent: Tuesday, August 15, 2006 10:21 PM Subject: [Elecraft] First K2 question I just ordered mine and a question has already popped up in my fevered brain. Since the parts are arranged in different bags, one for each board, does it make sense to inventory and separate parts for each board? In other words, inventory and separate the control board parts and then finish the board. Once done, then proceed to an inventory/separation/finish of the front panel board and then so on. It seems to me it would cut down on clutter from parts that are not yet needed and create more usable space on my workdesk. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] First K2 question
Bill Carpenter wrote: I just ordered mine and a question has already popped up in my fevered brain. Since the parts are arranged in different bags, one for each board, does it make sense ... snip Hello Bill, When I was doing mine my wife remembered how disorganized I was with the OHR Kits and the K-1. So, she went shopping and came home with three plastic boxes with separators that could be re-positioned inside the larger boxes so as to make trays of various sizes. This helped with the inventory, immensely. However you decide to do it, the important thing is to get organized in a way that you will follow through with, at least that is my opinion. But the inventory should not be skipped because if your eyes are as iffy as mine, some of the parts are amazingly similar and it helps to sort out and double check those tiny numbers also, before any solder flows. Whatever you do, take your time and enjoy the build... 73, Terry W9TRB East Central Illinois ___ 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] Re: (Elecraft) First K2 question
Howdy Gang: I've built a bunch of kits over the years and the following technique works very well for me and keeps me from messing up...it is a bit labor intensive but it has proved to be foolproof for me (me being the fool or course:) I get sheet of legal size paper and write down the numbers of the components.i.e., R1, R2, C1 C2, etc, I do all the resistors and then the capacitors. I tape all the resistors and caps next to their designator on the paper. When I install a part I cross its number off of the list. I do this for diodes, transistors, toroids, etcnot the spare chassis parts though (grin) I can then tell when all those values have been used up and if I have any extra left over...meaning I made a mistake with another part and I can go looking for my mistake. It takes some time to do this but I find it much better than putting parts in certain containers by value.with my system I can tell if I have installed the correct number of a particular part value. Maybe not for everyone cause it is labor intensive but I find the kits go together faster and with much fewer mistakes with this system. 73, Joe W2KJ I QRP, therefore, I am ___ 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] Re: (Elecraft) First K2 question
I've built a bunch of kits over the years and the following technique works very well for me and keeps me from messing up...it is a bit labor intensive but it has proved to be foolproof for me (me being the fool or course:) I get sheet of legal size paper and write down the numbers of the components.i.e., R1, R2, C1 C2, etc, I do all the resistors and then the capacitors. I tape all the resistors and caps next to their designator on the paper. Just to keep the universe in balance let me suggest the complete opposite technique: I separate the parts by type (resistors, capacitors, diodes, etc.). I don't do an inventory (Christine usually does a really, really good job) but I do make sure I have the right part in my hand before soldering. While I've messed up some other things (put a electrolytic cap in backwards but fortunately none of the smoke got out) I haven't had a problem with this method. To each his own, of course. IMHO, YMMV, etc. Craig NZ0R K1 #1966 K2/100 #4941 KX1 #1499 KX1 #1541 (still in the box) K1 #?? (in the postal system somewhere) ___ 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 K2 question
Bill, There is one bag for the Control Board - open it and do the inventory - you will have to dip into the Hardware bag for a couple screws while doing the control board assembly, so your choice is either to inventory the hardware bag first or keep track of the parts used from it. Assemble the Control Board. If you have not done it already, inventory the hardware bag. The front panel is similar, inventory the Front Panel bag just before doing the front panel. The standoffs come in the hardware bag and the Serial Number packet contains the plastic parts. The screws are in the hardware bag. Aseemble the Front Panel. When you get to the RF board, there are 2 bags to inventory - RFa and RFb. I have not yet figured out exactly what the rationale is for separating the capacitors into the two bags, so you can plan on inventoring both together. Assemble the RF Board. There are really 3 steps to the RF board assembly. Do everything in the order spelled out in the manual and all should be well - do not skip about in the instructions until you have assembled several K2s and the process begins to make sense. Following the steps in the manual in order will yield you a fine functioning K2. 73, Don W3FPR -Original Message- I just ordered mine and a question has already popped up in my fevered brain. Since the parts are arranged in different bags, one for each board, does it make sense to inventory and separate parts for each board? In other words, inventory and separate the control board parts and then finish the board. Once done, then proceed to an inventory/separation/finish of the front panel board and then so on. It seems to me it would cut down on clutter from parts that are not yet needed and create more usable space on my workdesk. ___ 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] Re: (Elecraft) First K2 question
Craig, While this method works, it is not the best advice for those who do not have a few K2 assembly experiences under their belt. I would like to resurrect a favorite method of sorting parts that I use (I believe there are photos on Tom Hammond's website www.n0ss.net ). I cut a corrugated box in half (the USPS Priority Mail boxes work great to create 2 'trays'. The leaded components are placed (in value order) into the open end of the corrugations. This enables me to quickly locate any component and quickly mount it - the misc hardware and oddball components just lay in the center of the tray. I line up the capacitors on the left side of the tray and the diodes, inductors and misc leaded components on the right - larger values toward the rear of the tray. This is a method that was advocated with the old Heathkit instructions, and I find it much more useful than putting the components in bins or taping them to a sheet of paper, but then Your Mileage May Vary - organize the components in ny way that you can easily access them when needed, that is more important than the precise method of accomplishing that goal. Fortunately, the base K2 now packages the resistors in assembly step order on a strip, so you do not have to sort the resistors as we did in the earlier days. 73, Don W3FPR -Original Message- I've built a bunch of kits over the years and the following technique works very well for me and keeps me from messing up...it is a bit labor intensive but it has proved to be foolproof for me (me being the fool or course:) I get sheet of legal size paper and write down the numbers of the components.i.e., R1, R2, C1 C2, etc, I do all the resistors and then the capacitors. I tape all the resistors and caps next to their designator on the paper. Just to keep the universe in balance let me suggest the complete opposite technique: I separate the parts by type (resistors, capacitors, diodes, etc.). I don't do an inventory (Christine usually does a really, really good job) but I do make sure I have the right part in my hand before soldering. While I've messed up some other things (put a electrolytic cap in backwards but fortunately none of the smoke got out) I haven't had a problem with this method. To each his own, of course. IMHO, YMMV, etc. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
