RE: [Elecraft] KPA100 High Wattage Resistors
Ben, The ratings are conservative, so they can be mounted right down on the board, but there is no harm in leaving a small gap - EXCEPT for the one mounted on the bottom of the board - that one must go right down to the board for physical clearance reasons. 73, Don W3FPR -Original Message- Should my 1W, 2W, and 3W resistors on my KPA100 be mounted pressed against the board, or should I leave some space between them? -Ben K1NT ___ 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 AGC - magic?
There's something about the K2 that I haven't figured out yet. When I listen to my 830s, 2B or the R4A, Omni V or other rigs I've owned, I find their AGC to be very aggressive (Esp. the 2B). When a signal hits, the AGC really drops the gain and when the signal is gone, the gain goes way up. This creates a very high background noise level significantly reducing the long-term apparent S/N ratio. What I hear with the K2 is different. Background noise is lower, giving the false impression of reduced sensitivity. Signals pop out of the quiet background. I think I'm hearing more dynamic range in the audio output. Loud signals are actually louder than quieter ones. With my other rigs, the only diff between a strong and weak signal is S/N ratio. With the K2, the recovered audio volume level is also a bit different. Am I hearing things? Were these effects on purpose? It makes for a very smooth operating radio that produces far less listener fatigue than other rigs. I operated for 1 hour in a Straight Key Sprint (or stroll as it may be) last night using the 830s. I was happy to turn the rig off when quitting time came around. My ears felt assaulted with the static, 850 Hz CW tone and harsh sounding sidetone. And the 830s is considered one of the great sounding rigs. - Keith N1AS - - K2 5411 - ___ 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 High Wattage Resistors
Thanks Don, I didn't think of this until after I had mounted several of them, so I'm glad they can be mounted right down to the board. -Ben K1NT Don Wilhelm [EMAIL PROTECTED] wrote: Ben, The ratings are conservative, so they can be mounted right down on the board, but there is no harm in leaving a small gap - EXCEPT for the one mounted on the bottom of the board - that one must go right down to the board for physical clearance reasons. 73, Don W3FPR -Original Message- Should my 1W, 2W, and 3W resistors on my KPA100 be mounted pressed against the board, or should I leave some space between them? -Ben K1NT ___ 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] WM1 Wattmeter and AT1
Hi Group, While I have already got a very nice LP100 from Larry, WM1 could be good for portable use. From reading the manual, it should be able to link with computer. Will there be any linking cable supplied by the kit to link WM1 with the PC? Where can I down load the program for the control of the WM1? I am also interested in the AT1 step-by-step attenuator. The shipping weight of it seems fairly heavy. It seems that it just consists of a few resistors. While the AT1 is so heavy? Could anyone enlighten me? 73 Johnny Siu VR2XMC _ 与世界各地的朋友进行交流，免费下载 Live Messenger; http://get.live.com/messenger/overview ___ 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] KPA1500, KPA800 rollout delay
Here's what I got from Elecraft last May. This may change, as this was some time back. The KPA 800 is a single box amplifier with an internal custom designed 60V switching power supply. It weighs approximately 36 lbs. Dimensions are 16.5w x 15.5d x 7h. The KPA1500 uses two enclosures. The main desktop RF deck is the same size as the KPA800. The power supply enclosure is approximately 4 high and is the same depth and width as the main unit. It can sit under the main enclosure or under your operating table. The KPA1500 easily makes 1500W+ on 160M - 10M. We also plan for it to cover 6M with lower power. (Approximately 400W). The main RF box weighs about 40 lbs and the power supply box about 15 lbs. Here is a short list of additional features: �Full Break-In Silent Diode T/R �Microprocessor Controlled �Auto Band Switching (RF Sensing) �Built In Auto-Tuner. Matches 3:1 at 1500W �SO2R ready. Two Rig Inputs / Two Antenna Outputs (2nd rig routes to alternate antenna) �RS-232 Port for remote control and firmware downloadable updates. �Key-In / Key-Out sequencing for older rigs �Custom Designed witching Power Supply (RF Quiet) The assembled version of the KPA1500 should sell for about $5,900; The KPA800 about $3,900. The kit versions for these should be around $300-500 less. (These are not final prices and may vary several hundred dollars.) We will pre-assemble the power supplies and the internal RF cards on the kits. Lou, W�FK Message: 11 Date: Tue, 7 Nov 2006 12:19:55 -0500 From: Darwin, Keith [EMAIL PROTECTED] Subject: RE: [Elecraft] KPA1500, KPA800 rollout delay To: Elecraft@mailman.qth.net Message-ID: [EMAIL PROTECTED] Content-Type: text/plain; charset=iso-8859-1 Refresh my memory. What are these? Linear amps, 800 and 1500 watts out? 100 watts in? Price? - Keith N1AS - - K2 5411 - -Original Message- Lou Laderman [EMAIL PROTECTED] wrote: The KPA1500 and KPA800 amps were earlier projected for an October/November rollout. Elecraft has advised me that they are now looking after the first of the year (the January/February time frame). Lou, W�FK ___ 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 vs FT1000D
Hi Chris, Just outta curiosity, what does a tricked out Yaesu cost versus the K2? It's not a truly apples to apples comparison, but it gives one a feel for the value. The first place I put my effort is in the antennas, assuming you have a decent base rig. I'm betting, at least on QRP, the big difference in scores will be due to antennas and a second radio... Sorry we didn't QSO, maybe I'll catch you in the CQ WW DX or ARRL 160. 73, Julius n2wn ___ 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] CQ WW DX CW Team
Hello all, I posted this a while back, but we are closer to the contest now and thought I'd ask again. Would anyone like to play on 5 person teams for the CQ WW DX CW weekend? This will not change your ability to use your score for whatever club you may belong to, but it might be fun! Let me know ASAP so I can send the callsigns in to the contest committee. Cheers, Julius n2wn ___ 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 in SS CW...
Nice post Chris. Tnx for the comparison with a known contest rig. What I find amazing is that we're even comparing the K2 to an FT1000. That the $600 bone-stock K2 can truly run with the big boys (in this case, one that has been tricked out somewhat) is absolutely astounding. - Keith N1AS - - K2 5411 - Original Message- From: Chris Hurlbut I used my K2/100 and an FT1000D with the INRAD roofing filter mod in SO2R at WA7LT, low power. The close in *LOUD* signals is where there was a definite deficiency vs the FT1000D. A local, K7OX, was running HP, just a few miles away. If I was anywhere within about 10khz of him, I could still hear him on the K2. The FT1000D was dead quiet right up next to him. IMO, this is the only problem with the K2's RX! ___ 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 in SS CW...
Out of curiosity, did your K2 have the strong signal modification of the 2 diodes between pins 4 and 6 on U-12? Geoff, K6TFZ - . . . A local, K7OX, was running HP, just a few miles away. If I was anywhere within about 10khz of him, I could still hear him on the K2. ___ 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 Roofing Filter?
In view of this, and excuse me for not being an engineer in receiver design, why is there not a roofing filter option for the K2. Is it just not possible in a single conversion rig? de Joe, aa4nn The close in *LOUD* signals is where there was a definite deficiency vs the FT1000D. A local, K7OX, was running HP, just a few miles away. If I was anywhere within about 10khz of him, I could still hear him on the K2. The FT1000D was dead quiet right up next to him. IMO, this is the only problem with the K2's RX! ___ 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 Roofing Filter?
Joe, To generalize - 'roofing filter' would be placed right after the first mixer for best effectiveness to strip off extraneous mixing products. The K2 is a single conversion design and the IF filter is placed right after the first mixer (there is a post-mixer amp there for good dynamic range) - so it serves both as the IF filter and the 'roofing filter'. In other words, yes a roofing filter 'does not compute' for a single conversion design. 73, Don W3FPR -Original Message- In view of this, and excuse me for not being an engineer in receiver design, why is there not a roofing filter option for the K2. Is it just not possible in a single conversion rig? de Joe, aa4nn ___ 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 FOR SALE
K2 Serial Number 54XX is for sale. I built the unit about 6 monts ago and just added the KAT2. Now would like to build another kit, so need to move this one to a new home. The K2 comes with the following options installed: KIO2 Aux I/O module w/ gable KAT2 Automatic antenna tuner K160 160 meter module KNB2 Noise blanker KSB2 SSB module The K2 works well and is scratch free. I am an expereniced builder, having built many Heathkit over 45 years in Ham Radio pluse another K2 # 35XX that I use every day and it has been a stead fast companion. I would like to get $700.00 and I will ship to lower 48. Contact me off list. Kurt K0ARO ___ 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 Roofing Filter?
Don, Wasn't there talk a while back about someone replacing the Noise Blanker with another crystal filter? If it was switchable, like switching in and out the Noise Blanker, would that add to the shape of the skirts in the present crystal filter? Not sure about making up for any loss in the added filter though. Maybe set up this added filter for CW (400-600HZ) ? I still haul the K2 down to WP2Z. 73, N2TK, Tony -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Don Wilhelm Sent: Wednesday, November 08, 2006 10:15 AM To: Joe-aa4nn; elecraft@mailman.qth.net Subject: RE: [Elecraft] K2 Roofing Filter? Joe, To generalize - 'roofing filter' would be placed right after the first mixer for best effectiveness to strip off extraneous mixing products. The K2 is a single conversion design and the IF filter is placed right after the first mixer (there is a post-mixer amp there for good dynamic range) - so it serves both as the IF filter and the 'roofing filter'. In other words, yes a roofing filter 'does not compute' for a single conversion design. 73, Don W3FPR -Original Message- In view of this, and excuse me for not being an engineer in receiver design, why is there not a roofing filter option for the K2. Is it just not possible in a single conversion rig? de Joe, aa4nn ___ 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] KPA1500, KPA800 rollout delay
I'm ready to order mine !!! I don't know witch one, but one for sure !!! J-F - Message initial De : Lou Laderman [EMAIL PROTECTED] À : elecraft@mailman.qth.net Envoyé le : mercredi 8 novembre 2006, 09 h 13 min 05 s Objet : RE: [Elecraft] KPA1500, KPA800 rollout delay Here's what I got from Elecraft last May. This may change, as this was some time back. The KPA 800 is a single box amplifier with an internal custom designed 60V switching power supply. It weighs approximately 36 lbs. Dimensions are 16.5w x 15.5d x 7h. The KPA1500 uses two enclosures. The main desktop RF deck is the same size as the KPA800. The power supply enclosure is approximately 4 high and is the same depth and width as the main unit. It can sit under the main enclosure or under your operating table. The KPA1500 easily makes 1500W+ on 160M - 10M. We also plan for it to cover 6M with lower power. (Approximately 400W). The main RF box weighs about 40 lbs and the power supply box about 15 lbs. Here is a short list of additional features: • Full Break-In Silent Diode T/R • Microprocessor Controlled • Auto Band Switching (RF Sensing) • Built In Auto-Tuner. Matches 3:1 at 1500W • SO2R ready. Two Rig Inputs / Two Antenna Outputs (2nd rig routes to alternate antenna) • RS-232 Port for remote control and firmware downloadable updates. • Key-In / Key-Out sequencing for older rigs • Custom Designed witching Power Supply (RF Quiet) The assembled version of the KPA1500 should sell for about $5,900; The KPA800 about $3,900. The kit versions for these should be around $300-500 less. (These are not final prices and may vary several hundred dollars.) We will pre-assemble the power supplies and the internal RF cards on the kits. __ Do You Yahoo!? En finir avec le spam? Yahoo! Courriel vous offre la meilleure protection possible contre les messages non nollicités http://mail.yahoo.ca Yahoo! Courriel ___ 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] How about a KS (SSB)?
I have a buddy interested in a K2. He wasn't until I loaned him mine while I was on vacation. He was luke-warm before he borrowed the rig. He borrowed, he listened, loved the receiver and is considering a purchase. Sweet. But he's mostly an SSB op and stumbles a bit at the mixed reviews of the K2 on SSB. How about a K-series rig optimized for SSB? Start with a K2 and do a few mods ... - Turn the Keyer speed pot into an IF shift pot. - Turn the Power pot into a mic gain pot. - PO would be a menu selection. - Keyer speed would be a menu selection. - Choice of narrow or wide Xmit Xtal filters (switchable? Build-time choice?). - New variable RX Xtal filter optimized for SSB bandwidths. - Optional fixed narrow CW filter. - Optional speech processor, menu controlled. - Optional DSP continues to provide notch NR. Base price of, say $729? By catering to the SSB crowd, you'd be able to add K4 sales without losing K2 sales. By basing the design on the already great K2, you minimize design costs and risk. Take the 2 out of K2, spin it backwards to emphasize the other half of ham radio and you have a KS for SSB. - Keith N1AS - - K2 5411 - ___ 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 Roofing Filter?
Since the NB occurs right before the existing Xtal filter, adding more filtering in the NB slot would increase the skirts of the filter, but it wouldn't do a whole lot more. In other rigs with 2 filters, they are at different IFs and have other stages between them. Having a 2nd filter earlier in the signal chain helps to protect the RX from out of band signals. The K2 already does that by having the only filter be as early as possible. But, a cool option would be to have a narrow SSB filter that could go in that slot. That way you could configure your SSB adapter to have a wide Xtal filter for good sound and then add the narrow one for contests and tough band conditions without having to resort to the variable CW filter (which performs poorly at wide bandwidths). Of course, if you can live without your NB. I certainly can. - Keith N1AS - -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of N2TK, Tony Sent: Wednesday, November 08, 2006 10:32 AM To: [EMAIL PROTECTED]; elecraft@mailman.qth.net Subject: RE: [Elecraft] K2 Roofing Filter? Don, Wasn't there talk a while back about someone replacing the Noise Blanker with another crystal filter? If it was switchable, like switching in and out the Noise Blanker, would that add to the shape of the skirts in the present crystal filter? Not sure about making up for any loss in the added filter though. Maybe set up this added filter for CW (400-600HZ) ? I still haul the K2 down to WP2Z. 73, N2TK, Tony -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Don Wilhelm Sent: Wednesday, November 08, 2006 10:15 AM To: Joe-aa4nn; elecraft@mailman.qth.net Subject: RE: [Elecraft] K2 Roofing Filter? Joe, To generalize - 'roofing filter' would be placed right after the first mixer for best effectiveness to strip off extraneous mixing products. The K2 is a single conversion design and the IF filter is placed right after the first mixer (there is a post-mixer amp there for good dynamic range) - so it serves both as the IF filter and the 'roofing filter'. In other words, yes a roofing filter 'does not compute' for a single conversion design. 73, Don W3FPR -Original Message- In view of this, and excuse me for not being an engineer in receiver design, why is there not a roofing filter option for the K2. Is it just not possible in a single conversion rig? de Joe, aa4nn ___ 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 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 power mod
I've recently seen reference to a KX1 power modwhere can I find this mod and what version of the KX1 is it used on?? I checked the Elecraft site but didn't find it...did I miss something on the site?? 73, Joe W2KJ K1, KX1, K2, 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] WM1 Wattmeter and AT1
Hi Johnny, There was a typo on the order form and the weight was a little high for the AT1. This normally wouldn't be a big issue since it is ordered with other products, but when ordered alone for international orders, it could make a difference in shipping costs. It is now corrected and is listed at 0.5 lb. Thanks for the notice! 73, Eric WA6HHQ Siu Johnny wrote: Hi Group, I am also interested in the AT1 step-by-step attenuator. The shipping weight of it seems fairly heavy. It seems that it just consists of a few resistors. While the AT1 is so heavy? Could anyone enlighten me? ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
RE: [Elecraft] KX1 power mod
Joe, The 'KX1 power mod' is available from Elecraft as PN E850230. I could not find it on the website, and I really don't know why. The change is quite easy - just 2 resistors to change. R30 increases to 33 ohms (from 22) and R11 is decreased to 4.7 ohms (from 10). If you have the 1/4 watt resistors, you can make the change. Someone who had excess offered them on the reflector a day or two ago. The change is needed for the KXB3080 installation, and has been shipped with that option, but it can be installed on any KX1, even though it is not required. Do not exceed 4 watts for any significant length of time with your KX1, and keep a watch on the temperature above the tuning knob if you are operating at higher power levels. 73, Don W3FPR -Original Message- I've recently seen reference to a KX1 power modwhere can I find this mod and what version of the KX1 is it used on?? I checked the Elecraft site but didn't find it...did I miss something on the site?? 73, Joe W2KJ K1, KX1, K2, 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] K2 Roofing Filter?
Cop a Butchers at - Sorry in English Take a look at http://homepages.nildram.co.uk/~baker/K2_Overview.html 73 Stewart G3RXQ On Wed, 8 Nov 2006 11:26:03 -0500, Darwin, Keith wrote: Since the NB occurs right before the existing Xtal filter, adding more filtering in the NB slot would increase the skirts of the filter, but it wouldn't do a whole lot more. In other rigs with 2 filters, they are at different IFs and have other stages between them. Having a 2nd filter earlier in the signal chain helps to protect the RX from out of band signals. The K2 already does that by having the only filter be as early as possible. But, a cool option would be to have a narrow SSB filter that could go in that slot. That way you could configure your SSB adapter to have a wide Xtal filter for good sound and then add the narrow one for contests and tough band conditions without having to resort to the variable CW filter (which performs poorly at wide bandwidths). Of course, if you can live without your NB. I certainly can. - Keith N1AS - -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of N2TK, Tony Sent: Wednesday, November 08, 2006 10:32 AM To: [EMAIL PROTECTED]; elecraft@mailman.qth.net Subject: RE: [Elecraft] K2 Roofing Filter? Don, Wasn't there talk a while back about someone replacing the Noise Blanker with another crystal filter? If it was switchable, like switching in and out the Noise Blanker, would that add to the shape of the skirts in the present crystal filter? Not sure about making up for any loss in the added filter though. Maybe set up this added filter for CW (400-600HZ) ? I still haul the K2 down to WP2Z. 73, N2TK, Tony -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Don Wilhelm Sent: Wednesday, November 08, 2006 10:15 AM To: Joe-aa4nn; elecraft@mailman.qth.net Subject: RE: [Elecraft] K2 Roofing Filter? Joe, To generalize - 'roofing filter' would be placed right after the first mixer for best effectiveness to strip off extraneous mixing products. The K2 is a single conversion design and the IF filter is placed right after the first mixer (there is a post-mixer amp there for good dynamic range) - so it serves both as the IF filter and the 'roofing filter'. In other words, yes a roofing filter 'does not compute' for a single conversion design. 73, Don W3FPR -Original Message- In view of this, and excuse me for not being an engineer in receiver design, why is there not a roofing filter option for the K2. Is it just not possible in a single conversion rig? de Joe, aa4nn ___ 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 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] KX1 power output mod
Thanks to a fellow Elecrafter I now have the info on the KX1 power mod. 73, Joe W2KJ ___ 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 - Message Endings
Joe W2KJ wrote at the end of a posting: ... I QRP, therefore I am That reminds me of my response to a CB'er some 30 years ago asking what *real* difference there was between licensed radio amateurs and Citizen Banders: I think, therefore I ham! 73, Mike / KK5F ___ 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 Power Mod
Sorry Joe I meant to send this to the reflector There is no direct link to the Mods Page that I could find, however; For the benefit of the Elecraft Reflector Archive and any others that are looking for the KX1 Power Mod; you can find it by going to the Builders Resources page, on the top of the Builder's Resources page you will find a link to the Spare Parts and Mod Kits page, go to the Spare Parts and Mod's page and all the way on the bottom is the PDF file that describes the KX1 Power Modification. The link is http://www.elecraft.com/manual/E740099%20KX1%20Application%20Note%20Rev%20B.pdf/ Sorry but I had problems getting TinyURL to work 73 K2CG Chuck G ___ 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] Wide SSB caps or not?
So guys, I just ordered the SSB board and the 100 watt PA. I also ordered the wide SSB caps. Should I put them in or leave them out? Can you hear the difference between 2.4 KHz and 2.6 KHz on receive? On transmit? SSB is only about 5% of my operating time. I'll dabble in 'phone here and there. Everything from contests to DX to rag chewing. - Keith N1AS - - K2 5411 - ___ 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] Wide SSB caps or not?
Kieth, If you have the KDSP2 installed, its SSB low pass filter function cuts off the high frequency end of the 2.6 kHz filter, and you end up with about a 2.4 kHz bandwidth for receive anyway. What I am saying is that the 2.4 is about ideal for receive. If you want a more Hi-Fi transmitted signal, then the 2.6 will give you a bit more bandwidth in your transmitted signal. Without the KDSP2, the 2.6 kHz will give you a wider receive bandwidth, and signals tune a little easier as a result, but you have 200 Hz more high frequency noise along with the signal which may negate the advantages. The choice depends on your ears and your tastes. 73, Don W3FPR -Original Message- So guys, I just ordered the SSB board and the 100 watt PA. I also ordered the wide SSB caps. Should I put them in or leave them out? Can you hear the difference between 2.4 KHz and 2.6 KHz on receive? On transmit? SSB is only about 5% of my operating time. I'll dabble in 'phone here and there. Everything from contests to DX to rag chewing. - Keith N1AS - - K2 5411 - ___ 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] KX1 power mod
Here's the link to the KX1 Power Mod on the Elecraft website. I searched for it also and couldn't find it. So I tried a Google search, and there it was - very well hidden. Don't know why it isn't easier to find along with the other Elecraft mods. http://www.elecraft.com/manual/E740099%20KX1%20Application%20Note%20Rev%20A.pdf 72/73, ed - k9ew On 11/8/06, Joseph Trombino Jr [EMAIL PROTECTED] wrote: I've recently seen reference to a KX1 power modwhere can I find this mod and what version of the KX1 is it used on?? I checked the Elecraft site but didn't find it...did I miss something on the site?? 73, Joe W2KJ K1, KX1, K2, 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 ___ 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] LU/NM6E KX1 QRP active 11/8-11/16
Hi folks, I am here in Buenos Aires with my KX1 on a business trip. I plan to mostly try working the strongest folks as best I can or even try a CQ on 7.040 or 7.060 +/- I am walking out to the park in 15 minutes so lets see how it plays. I will be trying this for the next 9 days and play around with antenna configurations. Operations will mostly be starting off around 22:30 or 23:00 hours UTC. Javier LU/NM6E Javier NM6E K2 #4409 K1 #1103 KX1 #813 ARCI #11908 ___ 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] Wide SSB caps or not?
I found that the wider filter gave me more flexibility for adjusting the FL1/OPT1 BFO frequency for the transmit audio I liked best. The wider filter does allow more HF response, which shows up as high frequency noise on receive, so I set FL2 to use the OPT1 filter too but with the BFO adjusted to shift the bandpass for more low and less high frequency response. That gives me a great deal of control over the sound of other station's signals that I may find are a bit too bright (lows cut off). Since the FL1 settings are those used automatically for xmit, choosing different setups for the other filters does not change the transmit audio. Ron AC7AC -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Darwin, Keith Sent: Wednesday, November 08, 2006 1:33 PM To: elecraft@mailman.qth.net Subject: [Elecraft] Wide SSB caps or not? So guys, I just ordered the SSB board and the 100 watt PA. I also ordered the wide SSB caps. Should I put them in or leave them out? Can you hear the difference between 2.4 KHz and 2.6 KHz on receive? On transmit? SSB is only about 5% of my operating time. I'll dabble in 'phone here and there. Everything from contests to DX to rag chewing. - Keith N1AS - - K2 5411 - ___ 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] Elecraft CW Net Non Announcement
Good Evening Javier, Here is what I append to the end of my announcements: Please join us: Monday z (Sunday 4:00 PM PST) 14050 kHz Monday 0300z (Sunday 7 PM PST) 7045 kHz Long shot or not I think it would be great to see if we can get you logged in. Next weekend I hope to have a few folks listening from various parts of North America so we may find you. I will address this to the Elecraft list so others will know you are going to try. Relayed stations are always welcome. Good luck and thank you for your note. Kevin. KD5ONS K2 #2511 On Tue, 07 Nov 2006 19:12:06 -0800, Javier Campos [EMAIL PROTECTED] wrote: Hi Kevin, Can you let me know what the meeting times are and freqs? I just landed here in Buenos Aires and brought my KX1.. I know, it's lng shot but there plenty of trees near my hotel and parks that, after work, I can try Javier LU/NM6E Javier NM6E K2 #4409 K1 #1103 KX1 #813 ARCI #11908 ___ 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
