Re: [Elecraft] My K3 is Sick!
K3 7956 is sick enough to score FT5ZM on 17CW/SSB, 20CW/SSB, 30CW, 40CW/SSB, and 80CW, with 100w, inverted L and a cobwebb. Of course that's not to say any other 100watt radio wouldn't have worked them also but since we're bragging up our K3s.lol. 73 Gary KC9EE __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Antenna question
George, You do not say what power you are transmitting and it would be helpful to know the separation between the antennas. Will the vertical be as high as the yagi? Need to know what frequency is used. OK, in lieu of this data I will make some assumptions and show you the math to calculate the power received. F = 3.5-MHz Po = 100w = 50 dBm separation = 60 feet = 18.3m cross-pol loss = 20 dB (it will not be quite this much at this close separation) L = 32.4 + 20 Log F + 20 Log d, where F= MHz and d= km L = the space loss between antenna, in dB L = 32.4 +20 Log (3.5) + 20 Log (18.3/1000) L = 32.4 + 10.9 - 5 L = 38 dB Ltot = L + Lcross-pol = 58 dB Po - Ltot = -8 dBm That is a very strong signal but will not hurt the receiver. Typically anything under 0 dBm is safe. I run 1500w and have a preamp attached to the TR coax relay and have had no problems blowing up the very sensitive transistor in the preamp if the relay isolation is equal to the power in dBm. Now cross-pol loss is probably not 20 dB but more like 15 dB and your antennas are in near-field so these formula are not quite accurate. Ideally you would measure the power on the receiving antenna with a milliwatt power meter but I suppose you do not have one. Also I did not include antenna gains in this, but in close proximity they are probably not accurate. I have tested my tower mounted preamp by sending a test signal to an antenna about 130-foot away and using the space loss formula pretty accurately predicted received signal level. This let me test the preamp sensitivity without removing it from the tower. If you have a scope look at the received RF signal and measure the peak voltage. P = E^2*R or E = sq-rt (P/50) P = 0 dBm = 0.001w sq-rt(0.001/50) = .004v 73, Ed - KL7UW PS: If you run more than 100w then either short the receiver antenna line or use a coax relay to disconnect it when transmitting. Date: Tue, 11 Feb 2014 23:36:09 + From: George Thornton gthorn...@thorntonmostullaw.com To: 'elecraft @ mailman . qth . net' elecraft@mailman.qth.net Subject: Re: [Elecraft] Antenna question Message-ID: 040f2ec01a53458babf11914164d5...@server.thorntonmostullaw.com Content-Type: text/plain; charset=us-ascii This might be a stupid question, but here goes. I have a small lot. I currently am using a 3 element Yagi that barely fits on the property. I was thinking about getting a vertical as a second HF antenna. If I put it up it is going to have to be pretty close to the Yagi. I have a dual receive K3. If I have both receivers going, one on each channel, and I broadcast on one of these antennas, am I in any danger of overloading and frying the other receiver? 73, Ed - KL7UW http://www.kl7uw.com Kits made by KL7UW Dubus Mag business: dubus...@gmail.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Antenna question
Hi George, The 130 feet corresponds to lambda/2 on 80 and you can use the far field approximation (that Ed is using) there... At short distances (less than a quarter or a sixth of the wavelength), however, 1/r^2 and 1/r^3 (near field) components of E and H fields are still present (or dominant) and the far field approximation should not be used. You also have to be careful with the cross-polarization argument, since the electrical near field has all three vector components almost anywhere in space and the coupling can be much higher (depending on how well symmetry is preserved in the yagi+vertical system). Better use a NEC based program (e.g. EZNEC or the free 4nec2), if you have on access to a milliwatt-meter/scope and have to calculate... By the way, P should read P= E*I = E^2/R = E=sqrt(P*R)=223mV for a 0dBm (S9+67dB) signal (?) Greetings Ralf, DL6OAP Am 12.02.2014 um 10:31 schrieb Edward R Cole kl...@acsalaska.net: George, You do not say what power you are transmitting and it would be helpful to know the separation between the antennas. Will the vertical be as high as the yagi? Need to know what frequency is used. OK, in lieu of this data I will make some assumptions and show you the math to calculate the power received. F = 3.5-MHz Po = 100w = 50 dBm separation = 60 feet = 18.3m cross-pol loss = 20 dB (it will not be quite this much at this close separation) L = 32.4 + 20 Log F + 20 Log d, where F= MHz and d= km L = the space loss between antenna, in dB L = 32.4 +20 Log (3.5) + 20 Log (18.3/1000) L = 32.4 + 10.9 - 5 L = 38 dB Ltot = L + Lcross-pol = 58 dB Po - Ltot = -8 dBm That is a very strong signal but will not hurt the receiver. Typically anything under 0 dBm is safe. I run 1500w and have a preamp attached to the TR coax relay and have had no problems blowing up the very sensitive transistor in the preamp if the relay isolation is equal to the power in dBm. Now cross-pol loss is probably not 20 dB but more like 15 dB and your antennas are in near-field so these formula are not quite accurate. Ideally you would measure the power on the receiving antenna with a milliwatt power meter but I suppose you do not have one. Also I did not include antenna gains in this, but in close proximity they are probably not accurate. I have tested my tower mounted preamp by sending a test signal to an antenna about 130-foot away and using the space loss formula pretty accurately predicted received signal level. This let me test the preamp sensitivity without removing it from the tower. If you have a scope look at the received RF signal and measure the peak voltage. P = E^2*R or E = sq-rt (P/50) P = 0 dBm = 0.001w sq-rt(0.001/50) = .004v 73, Ed - KL7UW PS: If you run more than 100w then either short the receiver antenna line or use a coax relay to disconnect it when transmitting. Date: Tue, 11 Feb 2014 23:36:09 + From: George Thornton gthorn...@thorntonmostullaw.com To: 'elecraft @ mailman . qth . net' elecraft@mailman.qth.net Subject: Re: [Elecraft] Antenna question Message-ID: 040f2ec01a53458babf11914164d5...@server.thorntonmostullaw.com Content-Type: text/plain; charset=us-ascii This might be a stupid question, but here goes. I have a small lot. I currently am using a 3 element Yagi that barely fits on the property. I was thinking about getting a vertical as a second HF antenna. If I put it up it is going to have to be pretty close to the Yagi. I have a dual receive K3. If I have both receivers going, one on each channel, and I broadcast on one of these antennas, am I in any danger of overloading and frying the other receiver? 73, Ed - KL7UW http://www.kl7uw.com Kits made by KL7UW Dubus Mag business: dubus...@gmail.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] My K3 is Sick!
Will someone please pass me the coolade so I can comment :-) 73 Jeff kb2m -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Gary Hunt Sent: Monday, February 10, 2014 2:23 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] My K3 is Sick! K3 7956 is sick enough to score FT5ZM on 17CW/SSB, 20CW/SSB, 30CW, 40CW/SSB, and 80CW, with 100w, inverted L and a cobwebb. Of course that's not to say any other 100watt radio wouldn't have worked them also but since we're bragging up our K3s.lol. 73 Gary KC9EE __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] My K3 is Sick!
I seem to have the same issue. 73 Gary KC9EE Sent from Yahoo Mail on Android __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] My K3 is Sick!
Funny that Elecraft is the only amateur radio mfr I know of whose sick radios don't need a trip to the service center to be made well again. 73 de Dennis KD7CAC Scottsdale, AZ On Feb 12, 2014, at 4:49 AM, Gary Hunt kc...@yahoo.com wrote: I seem to have the same issue. 73 Gary KC9EE __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Antenna question
Good advice: I use wire antennas for 40m 80m with a HexBeam for the higher bands a 5BTV vertical. My sub-receiver is connected to a 50' vertical wire. The vertical wire is about 20' (horizontally) from the wire antennas and about 30' from the 5BTV and HexBeam When I installed the KPA500 I did the same test starting at 10 watts on 80m through 10m. I found that there was enough isolation on all antennas to leave the sub-receiver connected. I use the sub-receiver for diversity and would miss that feature. George -- From: WILLIS COOKE wrco...@yahoo.com Sent: Tuesday, February 11, 2014 10:21 PM To: George Thornton gthorn...@thorntonmostullaw.com; 'elecraft @ mailman . qth . net' elecraft@mailman.qth.net Subject: Re: [Elecraft] Antenna question Since the K3 will do the QRP thing down to 100 mw, think about installing the vertical above the beam on the mast and gradually try more and more power out of the K3 until you start getting some overloading. At least you can find your answer without frying anything and some folks find QRP lots of fun. Maybe you will too! Willis 'Cookie' Cooke, TDXS DX Chairman K5EWJ Trustee N5BPS, USS Cavalla, USS Stewart From: George Thornton gthorn...@thorntonmostullaw.com To: 'elecraft @ mailman . qth . net' elecraft@mailman.qth.net Sent: Tuesday, February 11, 2014 5:36 PM Subject: Re: [Elecraft] Antenna question This might be a stupid question, but here goes. I have a small lot. I currently am using a 3 element Yagi that barely fits on the property. I was thinking about getting a vertical as a second HF antenna. If I put it up it is going to have to be pretty close to the Yagi. I have a dual receive K3. If I have both receivers going, one on each channel, and I broadcast on one of these antennas, am I in any danger of overloading and frying the other receiver? __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Antenna question
Good advice: I use wire antennas for 40m 80m with a HexBeam for the higher bands a 5BTV vertical. My sub-receiver is connected to a 50' vertical wire. The vertical wire is about 20' (horizontally) from the wire antennas and about 30' from the 5BTV and HexBeam When I installed the KPA500 I did the same test starting at 10 watts on 80m through 10m. I found that there was enough isolation on all antennas to leave the sub-receiver connected. I use the sub-receiver for diversity and would miss that feature. George -- From: WILLIS COOKE wrco...@yahoo.com Sent: Tuesday, February 11, 2014 10:21 PM To: George Thornton gthorn...@thorntonmostullaw.com; 'elecraft @ mailman . qth . net' elecraft@mailman.qth.net Subject: Re: [Elecraft] Antenna question Since the K3 will do the QRP thing down to 100 mw, think about installing the vertical above the beam on the mast and gradually try more and more power out of the K3 until you start getting some overloading. At least you can find your answer without frying anything and some folks find QRP lots of fun. Maybe you will too! Willis 'Cookie' Cooke, TDXS DX Chairman K5EWJ Trustee N5BPS, USS Cavalla, USS Stewart From: George Thornton gthorn...@thorntonmostullaw.com To: 'elecraft @ mailman . qth . net' elecraft@mailman.qth.net Sent: Tuesday, February 11, 2014 5:36 PM Subject: Re: [Elecraft] Antenna question This might be a stupid question, but here goes. I have a small lot. I currently am using a 3 element Yagi that barely fits on the property. I was thinking about getting a vertical as a second HF antenna. If I put it up it is going to have to be pretty close to the Yagi. I have a dual receive K3. If I have both receivers going, one on each channel, and I broadcast on one of these antennas, am I in any danger of overloading and frying the other receiver? __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] My K3 is Sick!
Can I request that we try to stick to the king's English here? Admittedly, we hams have our jargon, but lets limit our foray's into today's POP culture terminology as much as we can. Are we kool with that? Groovy ! 73, Charlie k3ICH - Original Message - From: Jeff Griffin k...@comcast.net To: 'Gary Hunt' kc...@yahoo.com; elecraft@mailman.qth.net Sent: Wednesday, February 12, 2014 6:44 AM Subject: Re: [Elecraft] My K3 is Sick! Will someone please pass me the coolade so I can comment :-) 73 Jeff kb2m -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Gary Hunt Sent: Monday, February 10, 2014 2:23 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] My K3 is Sick! K3 7956 is sick enough to score FT5ZM on 17CW/SSB, 20CW/SSB, 30CW, 40CW/SSB, and 80CW, with 100w, inverted L and a cobwebb. Of course that's not to say any other 100watt radio wouldn't have worked them also but since we're bragging up our K3s.lol. 73 Gary KC9EE __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K2 Won't power on
With Q7/Q8 removed, the resistance from the Collector solder pad to ground on both is 70 ohms. Doing a Tune with Q7/Q8 removed results in 1.0V on the Base pads and a Low P on the display. I do have the KAT2 installed, just in case this makes a difference. This was done into a dummy load. The antenna that I normally run is an 80m Carolina Windom strung up between a tree in my front yard to a tree in my backyard. I have no additional grounding to it, just the baluns that are part of the normal antenna design. I am very cautious of lightning in the summer, and leave the antennas disconnected when not using the radio, however given that its winter here and sub zero temperatures, I didn't worry about it. I had never heard of static caused by the wind. What is a good way to protect against this? Thanks, Jeremy VA3ZTF -- View this message in context: http://elecraft.365791.n2.nabble.com/K2-Won-t-power-on-tp7584083p7584107.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] My K3 is Sick!
I agree the K3 is one sick piece of gear! It is also so killer! Keith AK6ZZ Sent from my iPhone please excuse typos On Feb 12, 2014, at 5:57 AM, Charlie T, K3ICH pin...@erols.com wrote: Can I request that we try to stick to the king's English here? Admittedly, we hams have our jargon, but lets limit our foray's into today's POP culture terminology as much as we can. Are we kool with that? Groovy ! 73, Charlie k3ICH - Original Message - From: Jeff Griffin k...@comcast.net To: 'Gary Hunt' kc...@yahoo.com; elecraft@mailman.qth.net Sent: Wednesday, February 12, 2014 6:44 AM Subject: Re: [Elecraft] My K3 is Sick! Will someone please pass me the coolade so I can comment :-) 73 Jeff kb2m -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Gary Hunt Sent: Monday, February 10, 2014 2:23 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] My K3 is Sick! K3 7956 is sick enough to score FT5ZM on 17CW/SSB, 20CW/SSB, 30CW, 40CW/SSB, and 80CW, with 100w, inverted L and a cobwebb. Of course that's not to say any other 100watt radio wouldn't have worked them also but since we're bragging up our K3s.lol. 73 Gary KC9EE __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] My K3 is Sick!
But the King's English is not what is spoken in America, or in much of the world. The guiding reference The King's English was printed in 1906, some 20 years before the production of Modern English Usage in the 1920s almost 100 years ago. American English has evolved some since then. International or Business English has also evolved. Sick meaning good has been in use since the 1980s and a roughly similar meaning was around in the 1920s. Wouldn't it be terrible if ham radio was associated with Pop culture. Oh my! You might have to deal with young people! You know, like those in their 60s. Grin Rich NU6T On 2/12/2014 5:55 AM, Charlie T, K3ICH wrote: Can I request that we try to stick to the king's English here? Admittedly, we hams have our jargon, but lets limit our foray's into today's POP culture terminology as much as we can. Are we kool with that? Groovy ! 73, Charlie k3ICH - Original Message - From: Jeff Griffin k...@comcast.net To: 'Gary Hunt' kc...@yahoo.com; elecraft@mailman.qth.net Sent: Wednesday, February 12, 2014 6:44 AM Subject: Re: [Elecraft] My K3 is Sick! Will someone please pass me the coolade so I can comment :-) 73 Jeff kb2m -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Gary Hunt Sent: Monday, February 10, 2014 2:23 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] My K3 is Sick! K3 7956 is sick enough to score FT5ZM on 17CW/SSB, 20CW/SSB, 30CW, 40CW/SSB, and 80CW, with 100w, inverted L and a cobwebb. Of course that's not to say any other 100watt radio wouldn't have worked them also but since we're bragging up our K3s.lol. 73 Gary KC9EE __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] My K3 is Sick!
The K3 is money! Keith AK6ZZ Sent from my iPhone please excuse typos On Feb 12, 2014, at 6:19 AM, Rich reh...@ix.netcom.com wrote: But the King's English is not what is spoken in America, or in much of the world. The guiding reference The King's English was printed in 1906, some 20 years before the production of Modern English Usage in the 1920s almost 100 years ago. American English has evolved some since then. International or Business English has also evolved. Sick meaning good has been in use since the 1980s and a roughly similar meaning was around in the 1920s. Wouldn't it be terrible if ham radio was associated with Pop culture. Oh my! You might have to deal with young people! You know, like those in their 60s. Grin Rich NU6T On 2/12/2014 5:55 AM, Charlie T, K3ICH wrote: Can I request that we try to stick to the king's English here? Admittedly, we hams have our jargon, but lets limit our foray's into today's POP culture terminology as much as we can. Are we kool with that? Groovy ! 73, Charlie k3ICH - Original Message - From: Jeff Griffin k...@comcast.net To: 'Gary Hunt' kc...@yahoo.com; elecraft@mailman.qth.net Sent: Wednesday, February 12, 2014 6:44 AM Subject: Re: [Elecraft] My K3 is Sick! Will someone please pass me the coolade so I can comment :-) 73 Jeff kb2m -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Gary Hunt Sent: Monday, February 10, 2014 2:23 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] My K3 is Sick! K3 7956 is sick enough to score FT5ZM on 17CW/SSB, 20CW/SSB, 30CW, 40CW/SSB, and 80CW, with 100w, inverted L and a cobwebb. Of course that's not to say any other 100watt radio wouldn't have worked them also but since we're bragging up our K3s.lol. 73 Gary KC9EE __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] 270V ERR KPA500
I'm getting this error from my amp when I turn it on and set it in the OPER mode. Then it requires shutoff via the rear switch to shut it off. I've been running it off 120v and has been working fine. What do I need to look for? 73 Dwight NS9I __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K2 Won't power on
Jeremy, 70 ohms is too low on the +12 volt power line, you should see a large capacitor charging and the resistance should climb if all is normal. 1 volt on the base during a TUNE is too high, so plan to replace Q11 and Q13 - they are included in the K2PAKIT. Yes, static can be induced by wind, rain and snow as well as nearby lightning - we sometimes have lightning even in Winter. Unfortunately, you will have to find where the problem origin is. You can lift one end of R45 to remove Q5. Check again at the collector pad for Q7 or Q8 after removing Q5. Then to remove Q6, lift one end of RFC4 and check again. To remove the RF Preamp from the 12 volt rail, lift one end of R74. Check again. To remove the Post Mixer Amp, lift one end of R82 and check once more. To remove the TX Buffer, lift one end of R97 and check again. If the 12 volt rail still shows low resistance to ground, you probably have a faulty capacitor. Those are difficult to locate - it is probably an electrolytic, so look for any that are not flat on the top. They normally expand inside when they fail, so you are looking for a slightly rounded top. Removal of all the capacitors on the 12 volt rail is the next step if you cannot spot a bad one visually. Look at the schematic and look for every line marked +12v - if there is a capacitor connected to that line, remove it and check the resistance on the board after each one. Yes, a low resistance to ground is a nasty problem to troubleshoot and just takes time to isolate to the failure. Work methodically - if you jump around and try to shotgun it, the normal result is frustration. 73, Don W3FPR On 2/12/2014 8:58 AM, JeremyJones wrote: With Q7/Q8 removed, the resistance from the Collector solder pad to ground on both is 70 ohms. Doing a Tune with Q7/Q8 removed results in 1.0V on the Base pads and a Low P on the display. I do have the KAT2 installed, just in case this makes a difference. This was done into a dummy load. The antenna that I normally run is an 80m Carolina Windom strung up between a tree in my front yard to a tree in my backyard. I have no additional grounding to it, just the baluns that are part of the normal antenna design. I am very cautious of lightning in the summer, and leave the antennas disconnected when not using the radio, however given that its winter here and sub zero temperatures, I didn't worry about it. I had never heard of static caused by the wind. What is a good way to protect against this? __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] 270V ERR KPA500
Dwight... Without a theory of operation manual and a good schematic, it's really difficult to tell what would cause this. I'd like to see Elecraft publish an addendum to assist troubleshooting this amp. Would a defective interlock switch cause this or a loose circuit board plug? That would be too easy. 270 and 60 volts run to the PA assembly. You would have to isolate the PA assembly from the power supply for troubleshooting. Give Elecraft a call and they will help you out! Joe Hutchens ( AJ8MH ) http://webpages.charter.net/aj8mh-radio/ On Wed, Feb 12, 2014 at 9:25 AM, DGB wrote: I'm getting this error from my amp when I turn it on and set it in the OPER mode. Then it requires shutoff via the rear switch to shut it off. I've been running it off 120v and has been working fine. What do I need to look for? 73 Dwight NS9I __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] Elecraft reflector
Can you please remove my e-mail address from the reflector now, its got almost as many Lids as your average pile-up these days and is no longer informative I am afraid to say, can't put up with this dribble any more. The US Lid who sited 'the Kings English' was the last straw. best of 73 Chris M5LRO --- This email is free from viruses and malware because avast! Antivirus protection is active. http://www.avast.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Antenna question
Also known as, The worst horizontal antenna is better than the best vertical antenna theory. It's always worked out for me. Now if I lived on the beach. Wes N7WS On 2/12/2014 12:09 AM, Jim Brown wrote: [snip] I'm still working on the comparison of verticals to horizontal antennas -- I've done all the modeling and know the results, but haven't organized it to show yet. AD5X has also done some excellent work on the 43 ft vertical idea. And QST recently published a piece showing that a better use of a 43 ft vertical might be as the center support for horizontal dipoles for 80 and 40, a concept with which I strongly agree. :) 73, Jim K9YC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] WG: Antenna question
I am all for caution! That is why I suggested to start with 100 mw and work up rather that full power and take your chances. There is also a big difference in the selected antennas. Either a Carolina Windom or a classic Windom has a lot of vertical polarization while a Yagi has very little. Also my opinion of the quality of a K3 versus an FT-2K is very much higher, but I think the ability to turn the power down to sub QRP levels and the difference in antennas is very important. Willis 'Cookie' Cooke, TDXS DX Chairman K5EWJ Trustee N5BPS, USS Cavalla, USS Stewart From: bernhard.ho...@bmw.de bernhard.ho...@bmw.de To: wrco...@yahoo.com Sent: Wednesday, February 12, 2014 9:00 AM Subject: WG: [Elecraft] Antenna question Hi Willis, I killed an FT-2000D with a windom on ANT1 and Groundplane on ANT2...they were both about 20feet apart! Before that happened that on 15m my SWR of the windom was bad when the GP was connected..so the isolation of the FT-2000D was pretty poor. But this was, after speaking to other FT-2k owners, only an issue with the 200W version. Using now a 2 el Ultrabeam (by the way cool antenna for small spaces ), HF2V Vertical, Longwire and 3 Band Windom but haven't tried this with the K3. Using a 4 x switch on the roof of the house now and one cable going to the shack. So I am pretty cautious with 2 ant on one rig...hi 73s from Bavaria Bernie DL5RDP -- From: WILLIS COOKE wrco...@yahoo.com Sent: Tuesday, February 11, 2014 10:21 PM To: George Thornton gthorn...@thorntonmostullaw.com; 'elecraft @ mailman . qth . net' elecraft@mailman.qth.net Subject: Re: [Elecraft] Antenna question Since the K3 will do the QRP thing down to 100 mw, think about installing the vertical above the beam on the mast and gradually try more and more power out of the K3 until you start getting some overloading. At least you can find your answer without frying anything and some folks find QRP lots of fun. Maybe you will too! Willis 'Cookie' Cooke, TDXS DX Chairman K5EWJ Trustee N5BPS, USS Cavalla, USS Stewart From: George Thornton gthorn...@thorntonmostullaw.com To: 'elecraft @ mailman . qth . net' elecraft@mailman.qth.net Sent: Tuesday, February 11, 2014 5:36 PM Subject: Re: [Elecraft] Antenna question This might be a stupid question, but here goes. I have a small lot. I currently am using a 3 element Yagi that barely fits on the property. I was thinking about getting a vertical as a second HF antenna. If I put it up it is going to have to be pretty close to the Yagi. I have a dual receive K3. If I have both receivers going, one on each channel, and I broadcast on one of these antennas, am I in any danger of overloading and frying the other receiver? __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Elecraft reflector
The US Lid who sited 'the Kings English' was the last straw. That should be cited. Dave Hachadorian, K6LL Yuma, AZ . __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] My K3 is Sick!
By the way, in case the news hasn't got round yet, we've had a Queen on the throne (Elizabeth II) since 1952... :-) Dave (G0DJA) - Original Message - To: elecraft@mailman.qth.net Sent: Wednesday, February 12, 2014 1:55 PM Subject: Re: [Elecraft] My K3 is Sick! Can I request that we try to stick to the king's English here? __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] room on your desks for those monster monitors!
Hi, he said: I hate you guys that have room on your desks for those monster monitors! I can just barely fit a pair of ACER 22 inchers and an old Lenovo 15 square (for the P3/SVGA) on mine and have room for everything else I need on the shelf. I have 4 large monitors running, made possible with: http://www.amazon.com/gp/product/B00358RFJ8/ref=oh_details_o05_s01_i00?ie=UTF8psc=1 They allow the monitors to 'float' above the equipment, permitting the rigs/etc. to be stacked side by side across the desk, and the monitors to be side by side above them. I needed more reach from the wall for the 2 side monitors so I added: http://www.amazon.com/gp/product/B006PYHYXG/ref=oh_details_o05_s00_i00?ie=UTF8psc=1 They are very well made, I tried cheaper brands, no comparison! One big advantage of this setup over the traditional wood shelf above the rigs with monitors on it is access to the rigs. Merely swing the monitor out of the way, no shelf blocking access to the back of the rigs. Steve AD0ES __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] My K3 is Sick!
On Wed, Feb 12, 2014 at 6:23 AM, Keith Heimbold ag...@hotmail.com wrote: The K3 is money! Totes McGoats! (Beat that one guys!) Frank KG6EYC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Elecraft reflector
Folks, Please, no personal criticisms or attacks of others on the list. Calling someone here a LID is a direct list rules violation and calls for a personal apology from the poster. Personal attacks, snide remarks and rude statements are outside of the list guidelines. Please also remember that we have a wide range of list users from many regions of the U.S. and the world with different cultures and languages. Posts from others are easily mis-interpreted, so please resist the urge to quickly post a negative reply. Criticizing a person's use of language in a post is also inappropriate. If you have the urge to criticize the posting of another, please avoid rushing to hit return and instead save it in your drafts folder overnight to see if it is really worth posting in the morning. Most of the time, once viewed after a good rest, it isn't. Please remember that this is just a hobby, with a wide range of interests, technical skill and time available for each of us to participate in it. The bottom line - let's just have fun and respect everyone on the list. Of course, drinking a little the Elecraft 'kool-aid' enthusiasm from time to time is OK ;-) Those posts re-energize us and keep us putting in the long hours each day to make more great radios and accessories. 73, Eric. WA6HHQ Your List moderator, who speaks Californian, Dude! elecraft.com (Now in our 16th year of making cool, gnarly and rad radios.) _..._ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] 270V ERR KPA500
Mine did this right from the start. Trace the 270 volt wire from PS go amp module, thru the Z bracket. Somewhere the 270 is going low. Mine had a bad cap on the circuit board near the 270 V connector. ... bill nr4c Sent from my Verizon Wireless 4G LTE DROID DGB ns9i2...@bayland.net wrote: I'm getting this error from my amp when I turn it on and set it in the OPER mode. Then it requires shutoff via the rear switch to shut it off. I've been running it off 120v and has been working fine. What do I need to look for? 73 Dwight NS9I __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] 270V ERR KPA500
Or the interlock hardware is installed wrong. 73 de Brian/K3KO On 2/12/2014 17:28, bill conkling wrote: Mine did this right from the start. Trace the 270 volt wire from PS go amp module, thru the Z bracket. Somewhere the 270 is going low. Mine had a bad cap on the circuit board near the 270 V connector. ... bill nr4c Sent from my Verizon Wireless 4G LTE DROID DGB ns9i2...@bayland.net wrote: I'm getting this error from my amp when I turn it on and set it in the OPER mode. Then it requires shutoff via the rear switch to shut it off. I've been running it off 120v and has been working fine. What do I need to look for? 73 Dwight NS9I __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html - No virus found in this message. Checked by AVG - www.avg.com Version: 2012.0.2247 / Virus Database: 3697/6586 - Release Date: 02/12/14 - No virus found in this message. Checked by AVG - www.avg.com Version: 2012.0.2247 / Virus Database: 3697/6586 - Release Date: 02/12/14 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] 270V ERR KPA500
The interlock switch and hardware checks out good. I've had this amp for a couple of years. Removing the p.s. now to check it out as Bill mentioned. thanks 73 Dwight NS9I On 2/12/2014 11:44 AM, Brian Alsop wrote: Or the interlock hardware is installed wrong. 73 de Brian/K3KO On 2/12/2014 17:28, bill conkling wrote: Mine did this right from the start. Trace the 270 volt wire from PS go amp module, thru the Z bracket. Somewhere the 270 is going low. Mine had a bad cap on the circuit board near the 270 V connector. ... bill nr4c Sent from my Verizon Wireless 4G LTE DROID DGB ns9i2...@bayland.net wrote: I'm getting this error from my amp when I turn it on and set it in the OPER mode. Then it requires shutoff via the rear switch to shut it off. I've been running it off 120v and has been working fine. What do I need to look for? 73 Dwight NS9I __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html - No virus found in this message. Checked by AVG - www.avg.com Version: 2012.0.2247 / Virus Database: 3697/6586 - Release Date: 02/12/14 - No virus found in this message. Checked by AVG - www.avg.com Version: 2012.0.2247 / Virus Database: 3697/6586 - Release Date: 02/12/14 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] kpa100 toroid changes
Over the years the type of toroids in the kpa100 have changed. Is this because of availability or other reasons? I have a prewound set of toroids for the kpa100 but its old enough to not have rfc1. Plus the the ones I have don’t match descriptions from the latest manual Im working off of. I don’t have the originals either since I never ordered the kit. Can I modify the L18 I don’t need anymore to work in rfc1 spot? john wt5y __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] What is actually present on Rx-Out BNC of the KXV3 RF bosrd??
On 2/11/2014 11:25, Joe Subich, W4TV wrote: There is nothing there on the RX Out unless one select RX Ant. Look at the K3 schematics and read the Owners Manual. read the manual. sadly lacking explaining the Rx-Out BNC. thanks for the help. Basically it's useless in light of the severe losses. I need it for the three transverters if I want to run MAP65 on the EME portions. Sig's already weak enough as it is. If you want to split the main receiver antenna feed, you will need to add a splitter to the RX Out, connect one output port to your Fucbr (whatever that is), hi hi, sorry, I need a new keyboard as this one has rubbed off letter as well as some keys, I now see, do not type if pressed to lightly. Funcube-Dongle-Pro-Plus -- Bob KD7YZ http://www.qrz.com/db/KD7YZ www.denstarfarm.us/LGD __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] kpa100 toroid changes
John, The toroids have changed because of the KPA100UPKT. If you have ordered that kit to update your older kit, you will have two blue toroid cores. The red cores for use at L15 and L16 will not be used. No, you cannot use those cores, you must have 15 uHy of inductance at L16 and RFC1 and it would take more turns on the red cores than you would want to wind. Make certain you also have the updated shield kit. If it is current you will have a shield for the speaker magnet and 3 grounding clips as well as 2 solder lugs to ground the SO-239 jack directly to the outer side of the shield. 73, Don W3FPR On 2/12/2014 2:11 PM, John Cooper wrote: Over the years the type of toroids in the kpa100 have changed. Is this because of availability or other reasons? I have a prewound set of toroids for the kpa100 but its old enough to not have rfc1. Plus the the ones I have don’t match descriptions from the latest manual Im working off of. I don’t have the originals either since I never ordered the kit. Can I modify the L18 I don’t need anymore to work in rfc1 spot? __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] What is actually present on Rx-Out BNC of the KXV3 RF bosrd??
Bob, Why don't you connect that Funcube Dongle to the K3 IF OUT jack? That will provide a broad spectrum at the 8 MHz IF. 73, Don W3FPR On 2/12/2014 2:21 PM, Bob KD7YZ wrote: On 2/11/2014 11:25, Joe Subich, W4TV wrote: There is nothing there on the RX Out unless one select RX Ant. Look at the K3 schematics and read the Owners Manual. read the manual. sadly lacking explaining the Rx-Out BNC. thanks for the help. Basically it's useless in light of the severe losses. I need it for the three transverters if I want to run MAP65 on the EME portions. Sig's already weak enough as it is. If you want to split the main receiver antenna feed, you will need to add a splitter to the RX Out, connect one output port to your Fucbr (whatever that is), hi hi, sorry, I need a new keyboard as this one has rubbed off letter as well as some keys, I now see, do not type if pressed to lightly. Funcube-Dongle-Pro-Plus __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] [Elecraft_K3] curious behavior of the K3/P3, etc.
Thanks Rich, that is a very clear and thorough explanation! I cannot relate all to my level of understanding, but your explanation is complete so I can study it. In really basic language, what I understand is that adjusting the width will only affect the upper limit until I get it narrow enough so that both are in an acceptable range. However, I am still left with some doubts: particularly, why does the upper limit change when I adjust the lo-cut, and the lower limit change when I adjust the hi-cut? Thus, if I want to narrow my bandwidth to avoid a station above the desired one, I must adjust the lo-cut (I can see this happen on the P3). This occurs on all bands on CW. You are good at giving explanations—I hope I am not trying your patience! Thanks, Scott AA0AA Date: Tue, 11 Feb 2014 14:06:56 -0500 From: Richard Ferch ve3...@storm.ca To: elecraft@mailman.qth.net elecraft@mailman.qth.net OK, if you're talking about CW, the K3's normal CW is on lower sideband. In CW the filter behaviour gets tangled up with the sidetone pitch setting, which is also the default FC (centre frequency) for the filters in CW mode. Suppose the sidetone pitch/FC is 500 Hz and the BW (bandwidth) is 2000 Hz. Given those numbers, the calculated hi-cut and lo-cut frequencies would be 1500 Hz (FC + BW/2) and -500 Hz (FC - BW/2). That's a minus sign on the lo-cut frequency, meaning it's on the other sideband. The firmware should not allow that; it needs to place the lo-cut frequency on the proper sideband far enough above zero to give adequate carrier and opposite sideband suppression. IIRC, the low-pass cutoff is adjustable in the latest firmware - I believe it can be set to 100 Hz, 200 Hz or 300 Hz. So, with the low-pass cutoff set at 200 Hz, FC at 500 Hz and BW at 2000 Hz, the actual filter bandpass will be from 200 Hz to 1500 Hz. Adjusting the Width control would only affect the upper limit, as the lower limit is fixed by the low-pass cutoff. If the Width setting is sufficiently narrow for the calculated lo-cut frequency to be at or above the low-pass cutoff (100, 200 or 300 Hz), the effect of the Width control becomes symmetric about the centre frequency, as you might have originally expected. Because CW is on the lower sideband, adjusting the Width control only affects the lower RF (=higher audio) edge of the bandpass - the upper edge is fixed by the low-pass cutoff. Does this help make sense of your observations? 73, Rich VE3KI Scott Monks cq_dx_de_aa...@yahoo.com wrote: Now before you guys think I too am complaining--no, I just have a curious mind! Two questions that I am sure you more experienced can help me with: 1. When I begin narrowing the DSP down, on filter 1 (2.7, std, offset -0.84) only the lower freq side moves.? The DSP switches to the 2.1 filter, reacting the same, but when it narrows to about 1.10 (within filter 2; 2.1, offset 0.0) it changes so that both low and high move equally.? Even narrowing continues through the 700 and 400 Hz filters.? The reverse occurs in the same way.?? I have checked the offsets with the K3 program, and they are set as required.? On the K-3 display the bar-thing always seems to move equally on both sides.? Is this normal? 2. When seen on the P-3, on hi-cut-lo, if I move the lo side, the higher freq side moves, and if I move the hi side, the lower freq side moves.? On the K-3 display the expected side moves.? Again, is this normal? I have the last production software installed.? This was first noticed when I got the P3 and a big screen, when in a contest I wanted to shift the receiver up to avoid a disturbing signal and found I had to move the hi side to move the lo side!? Now I am accustomed and just watch my screen to make sure I am moving outside of the interfering peak. These only bother me because I know there must be a reason but I don't why it happens!? If curiosity is going to kill the cat, don't tell me and I will just continue to be happy with my partial K-line! Thanks for your patience, Scott? AA0AA Scott AA0AA; XE1/AA0AA cq_dx_de_aa...@yahoo.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] (no subject)
referral program http://esgalicia.com/c11f714t9d0z8r.php From: Mike 2/12/2014 9:39:23 PM __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] (no subject)
Ralf, Thanks for catching my mistake in the ohm's law formula. P = E^2/R Regarding using the far-field loss formula it is probably prudent to try measuring power on the receiving antenna when transmitting on the other antenna (the yagi). At the very least check with a SWR meter in the lowest power range and see if you detect anything. If the meter deflects or twitches power is probably way too high and you need some kind of protection device. There are some simple milliwatt power meter designs in some ham Handbooks (look for field strength meters); simplest is a IN34 and 1ma meter. If you blow up the 1N34 you have your answer! Better that you use a couple 20-dB coax attenuators before the meter at first. I no power is seen then remove one and test again. You can rely on using 0 dBm as maximum survivable input to the receiver, but the receiver still will be driven into compression and not usable while transmitting. My example of 130-feet was at 144-MHz so not a fair comparison with HF freq. which have much longer wavelength. The space loss formula is useful for making measurements at far-field (google it) 73, Ed - KL7UW From: Ralf Wilhelm r...@super-deutschland.net Cc: Elecraft@mailman.qth.net Elecraft@mailman.qth.net Subject: Re: [Elecraft] Antenna question Message-ID: 8dbfe76b-9bb4-4da1-a0b9-4a507d1ae...@super-deutschland.net Content-Type: text/plain; charset=us-ascii Hi George, The 130 feet corresponds to lambda/2 on 80 and you can use the far field approximation (that Ed is using) there... At short distances (less than a quarter or a sixth of the wavelength), however, 1/r^2 and 1/r^3 (near field) components of E and H fields are still present (or dominant) and the far field approximation should not be used. You also have to be careful with the cross-polarization argument, since the electrical near field has all three vector components almost anywhere in space and the coupling can be much higher (depending on how well symmetry is preserved in the yagi+vertical system). Better use a NEC based program (e.g. EZNEC or the free 4nec2), if you have on access to a milliwatt-meter/scope and have to calculate... By the way, P should read P= E*I = E^2/R = E=sqrt(P*R)=223mV for a 0dBm (S9+67dB) signal (?) Greetings Ralf, DL6OAP 73, Ed - KL7UW http://www.kl7uw.com Kits made by KL7UW Dubus Mag business: dubus...@gmail.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Antenna question
Hi Ed, Actually, my S9+67 dB for 0dBm turned out to be wrong - I lost one 6 dB in my book keeping, so 0dBm is S9+73 dB - or S9 equals -73 dBm (which is the number I had in mind). No doubt about the space loss formula and the far field - free space loss is no dissipative loss like for example loss in the ground but just a geometry factor. Basically the free space formula calculates the aperture area of your rx antenna divided by the area of a sphere centered on the tx antenna and with radius r (r being the distance). But this is the free space loss only if E and H fields decay as 1/r because that means that power density decays as 1/r^2 and integration over the sphere yields the total emitted power (which is the idea behind the formula) and by definition 1/r decay is the far field. If the 1/r^2 and 1/r^3 components of the fields have not already decayed, the space loss formula gives wrong results (which is why the german FCC equivalent wants us to either perform a near field calculation or a measurement if we run more than 10 Watts ERP to be sure that we don't exceed the near field limits). Regarding the polarization decoupling you mentioned: one can see by a little gedankenexperiment (as we say in physics even in english) that all electrical field vector components exist in the near field of the transmitting antenna: a part of the near field of a (electrically short) dipole follows the charge distribution on the dipole immediately (almost no retardation) and looks pretty much the same as the field between a positive and a negative charge (a static dipole) - or a short magnet - there are some field lines leaving the positve charge perpendicular to the antenna axis and then bending towards the other charge. If you view this from the side, you can see that even a perfectly horizontally polarized antenna has a vertical near field component, but for a short dipole, this decays as 1/r^3 (I think so) and is not present in the far field any more but might be dominant in the near field - so, with the vertical in the near field, the polarization decoupling can be d rastically reduced. Only if the yagi plus vertical system is symmetric - the (balanced) yagi pointing exactly towards the vertical or exactly in the opposite direction - this near field component will vanish (for symmetry reasons) and the polarization decoupling works, but for the other directions of the yagi it won't... So, regardless if you simulate or measure, don't forget to turn the yagi antenna into several directions - may be the coupling is stronger when one end of the driven element is close to the vertical... Greetings Ralf, DL6OAP Am 12.02.2014 um 21:46 schrieb Edward R Cole kl...@acsalaska.net: Ralf, Thanks for catching my mistake in the ohm's law formula. P = E^2/R Regarding using the far-field loss formula it is probably prudent to try measuring power on the receiving antenna when transmitting on the other antenna (the yagi). At the very least check with a SWR meter in the lowest power range and see if you detect anything. If the meter deflects or twitches power is probably way too high and you need some kind of protection device. There are some simple milliwatt power meter designs in some ham Handbooks (look for field strength meters); simplest is a IN34 and 1ma meter. If you blow up the 1N34 you have your answer! Better that you use a couple 20-dB coax attenuators before the meter at first. I no power is seen then remove one and test again. You can rely on using 0 dBm as maximum survivable input to the receiver, but the receiver still will be driven into compression and not usable while transmitting. My example of 130-feet was at 144-MHz so not a fair comparison with HF freq. which have much longer wavelength. The space loss formula is useful for making measurements at far-field (google it) 73, Ed - KL7UW __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Antenna question
I see a number of people are trying to calculate whether any damage would be done by the situation originally posted. Frankly, I think this is a dangerous approach. There are too many variables in a particular situation to risk depending on calculations when expensive equipment is endangered. If you must go ahead with your situation, I strongly suggest, as others have done, that you measure the interaction rather than try to calculate it. 73, Bill W6WRT __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Polarization loss [was no subject]
On 2/12/2014 12:46 PM, Edward R Cole wrote: Ralf, Thanks for catching my mistake in the ohm's law formula. P = E^2/R It's been at least 100 years since I worked antenna problems out on my KE log-log duplex vector slide rule, but the rule of 20 dB loss with crossed polarization doesn't apply well [or at all] in the near-field. And, the near-field doesn't just suddenly end, it declines as 1/d^k where k is usually somewhere between 2 and 3 depending on a bunch of other factors. The result is that the NF fades into the FF, there's no sign out from the antenna that says, The Far-Field starts here.** :-) Again, I would be extremely careful connecting a second antenna to a receiver if the antennas are at all close. Many a radio has been fried on Field Days. On the subject of destroying the front end of a receiver, be very wary of precipitation static with ungrounded antennas. Each rain drop or snowflake deposits a tiny charge. In the absence of some path to ground, each tiny charge will add to the total charge on the input capacitance of the first stage [like an FET], and eventually the voltage will rise high enough to destroy the device. I believe Elecraft radios have internal bleeds on the antennas but I still have external ones on mine. The same crew with over 200 hours of aggregate ham experience that put the CW and SSB stations in the same cabin watched a tiny little bit of grass on the baseline of a 756Pro2 that we couldn't even hear as it began to snow. Then silence. So, being highly experienced, we replaced it with another 756Pro2, and watched it die the same death. Easiest way to do it externally is to solder a 50K or so resistor into a PL-259, screw it onto one arm of a coax T, put the antenna on the other arm and screw the T onto the radio. You can use an RF choke instead of a resistor, however that can sometimes lead to parasitic resonances. 73, Fred K6DGW - Northern California Contest Club - CU in the 2014 Cal QSO Party 4-5 Oct 2014 - www.cqp.org **The original transcontinental railroad began in Sacramento. The government subsidy to the railroad was higher for construction in the mountains. The terrain around Sacramento is very flat, and the foothills of the Sierra Nevada are a good 30 miles or more to the east. A few miles NE of downtown is a golf course [flat], and there is [or was] a plaque on a rock that read, The mountains begin here. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Antenna question
Wire a small grain-of-wheat incandescent light bulb to the unused antenna feed and fire up the transmitter. If the bulb lights brightly, you need some protection. Admittedly, this is a crude test, but it can point to a problem and takes into account all those variables in the calculations. Try all bands and start at low power, otherwise, you may blow the bulb before any relative results can be gleaned. 73, Charlie k3ICH - Original Message - From: Bill Turner dezrat1...@wildblue.net To: elecraft@mailman.qth.net Sent: Wednesday, February 12, 2014 5:45 PM Subject: Re: [Elecraft] Antenna question I see a number of people are trying to calculate whether any damage would be done by the situation originally posted. Frankly, I think this is a dangerous approach. There are too many variables in a particular situation to risk depending on calculations when expensive equipment is endangered. If you must go ahead with your situation, I strongly suggest, as others have done, that you measure the interaction rather than try to calculate it. 73, Bill W6WRT __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Antenna question
On 2/12/2014 7:29 AM, Wes (N7WS) wrote: Also known as, The worst horizontal antenna is better than the best vertical antenna theory. It's always worked out for me. Now if I lived on the beach... Hi Wes, Based on my model studies, I wouldn't go that far -- it depends on how high either of the antennas are, as well as the quality of the ground. If your criteria is low angle radiation and you have better than average soil, a vertical dipole that's 20 ft or more above ground will beat a low dipole. Here in the mountains, our soil is stinko, so the only band where a vertical beats a horizontal dipole is 160M. 73, Jim K9YC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] 270V ERR KPA500
Measure the voltage at end of wire thru Z bracket while not connected to the amp module. And also connected. Should be 270 V. Mine was 12 V when connected. ...bill nr4c Sent from my Verizon Wireless 4G LTE DROID DGB ns9i2...@bayland.net wrote: The interlock switch and hardware checks out good. I've had this amp for a couple of years. Removing the p.s. now to check it out as Bill mentioned. thanks 73 Dwight NS9I On 2/12/2014 11:44 AM, Brian Alsop wrote: Or the interlock hardware is installed wrong. 73 de Brian/K3KO On 2/12/2014 17:28, bill conkling wrote: Mine did this right from the start. Trace the 270 volt wire from PS go amp module, thru the Z bracket. Somewhere the 270 is going low. Mine had a bad cap on the circuit board near the 270 V connector. ... bill nr4c Sent from my Verizon Wireless 4G LTE DROID DGB ns9i2...@bayland.net wrote: I'm getting this error from my amp when I turn it on and set it in the OPER mode. Then it requires shutoff via the rear switch to shut it off. I've been running it off 120v and has been working fine. What do I need to look for? 73 Dwight NS9I __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html - No virus found in this message. Checked by AVG - www.avg.com Version: 2012.0.2247 / Virus Database: 3697/6586 - Release Date: 02/12/14 - No virus found in this message. Checked by AVG - www.avg.com Version: 2012.0.2247 / Virus Database: 3697/6586 - Release Date: 02/12/14 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] Why won't my K3 work split in FSK-D mode?
-- Dick - K4XU __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Antenna question
When we had our place in Silver Springs, NV, our 40-meter 4-square, with an excellent radial system, was killer. I cannot imagine anything short of a full-size 2, possibly 3, element yagi up at least 70 feet even coming close. I would think it would take the 3-element yagi to even approach the F/B ratio of the 4-square. On the beach works *real* well. Any antenna we tried at Ballenita, Ecuador, worked great. The QTH was roughly 10-meters inland from high-tide! :) Jack, W6NF/VE4SNA/HC2UA Shelley, K7MKL/HC2UB On 2/12/2014 3:17 PM, Jim Brown wrote: On 2/12/2014 7:29 AM, Wes (N7WS) wrote: Also known as, The worst horizontal antenna is better than the best vertical antenna theory. It's always worked out for me. Now if I lived on the beach... Hi Wes, Based on my model studies, I wouldn't go that far -- it depends on how high either of the antennas are, as well as the quality of the ground. If your criteria is low angle radiation and you have better than average soil, a vertical dipole that's 20 ft or more above ground will beat a low dipole. Here in the mountains, our soil is stinko, so the only band where a vertical beats a horizontal dipole is 160M. 73, Jim K9YC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] 270V ERR KPA500
Mine did too ... Elecraft is sending me a new one, was under warranty! Kudos to Elecraft! 73 Dwight NS9I On Feb 12, 2014 5:29 PM, bill conkling n...@widomaker.com wrote: Measure the voltage at end of wire thru Z bracket while not connected to the amp module. And also connected. Should be 270 V. Mine was 12 V when connected. ...bill nr4c *Sent from my Verizon Wireless 4G LTE DROID* DGB ns9i2...@bayland.net wrote: The interlock switch and hardware checks out good. I've had this amp for a couple of years. Removing the p.s. now to check it out as Bill mentioned. thanks 73 Dwight NS9I On 2/12/2014 11:44 AM, Brian Alsop wrote: Or the interlock hardware is installed wrong. 73 de Brian/K3KO On 2/12/2014 17:28, bill conkling wrote: Mine did this right from the start. Trace the 270 volt wire from PS go amp module, thru the Z bracket. Somewhere the 270 is going low. Mine had a bad cap on the circuit board near the 270 V connector. ... bill nr4c Sent from my Verizon Wireless 4G LTE DROID DGB ns9i2...@bayland.net wrote: I'm getting this error from my amp when I turn it on and set it in the OPER mode. Then it requires shutoff via the rear switch to shut it off. I've been running it off 120v and has been working fine. What do I need to look for? 73 Dwight NS9I __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html - No virus found in this message. Checked by AVG - www.avg.com Version: 2012.0.2247 / Virus Database: 3697/6586 - Release Date: 02/12/14 - No virus found in this message. Checked by AVG - www.avg.com Version: 2012.0.2247 / Virus Database: 3697/6586 - Release Date: 02/12/14 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Antenna question
Bill, You don't trust the traditional Smoke Test? :-) 73, Phil w7ox On 2/12/14, 2:45 PM, Bill Turner wrote: I see a number of people are trying to calculate whether any damage would be done by the situation originally posted. Frankly, I think this is a dangerous approach. There are too many variables in a particular situation to risk depending on calculations when expensive equipment is endangered. If you must go ahead with your situation, I strongly suggest, as others have done, that you measure the interaction rather than try to calculate it. 73, Bill W6WRT __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Why won't my K3 work split in FSK-D mode?
Dick, Make sure you don't have SYNC DATA enabled. You will know if you do by a -S just under the DATA indication on the right side of the screen. I ran into this while trying to work a DX station on AFSK A split. I kept getting UP UP W4JBB. Although everything indicated I *was* split, I was not. I don't know why. All I know is that with SYNC DATA enabled (I use it for WINMOR), it minimizes T/R delays by forcing the same crystal filter for both transmit and receive. 73, Joel - W4JBB On 2/12/14, 5:33 PM, Dick Frey wrote: __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Polarization loss [was no subject]
A 'technical' consideration - rather than a creating a path to 'ground' for the antenna, it is better to create a DC path across each feedline. Fred's suggestion works and works quite nicely. 73, Don W3FPR On 2/12/2014 6:09 PM, Fred Jensen wrote: Easiest way to do it externally is to solder a 50K or so resistor into a PL-259, screw it onto one arm of a coax T, put the antenna on the other arm and screw the T onto the radio. You can use an RF choke instead of a resistor, however that can sometimes lead to parasitic resonances. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Why won't my K3 work split in FSK-D mode?
As mentioned in the K3 owner's manual SPLIT is not available for all mode combinations. If you see N/A flashed on VFO B when you try to enter split, then either the VFO A and B modes in effect at present are not usable in SPLIT, or you may have VFO B in a different mode than you think. Try tapping AB twice to ensure that VFO A and B are in the same mode. In any case where SPLIT isn't available you can always use RIT or XIT. If you have the sub receiver, you can achieve split operation without going into SPLIT mode: just use VFO B to tune the station you're listening to, and use VFO A to find a clear spot to call. 73, Wayne N6KR On Feb 12, 2014, at 3:57 PM, Joel Black w4...@charter.net wrote: Dick, Make sure you don't have SYNC DATA enabled. You will know if you do by a -S just under the DATA indication on the right side of the screen. I ran into this while trying to work a DX station on AFSK A split. I kept getting UP UP W4JBB. Although everything indicated I *was* split, I was not. I don't know why. All I know is that with SYNC DATA enabled (I use it for WINMOR), it minimizes T/R delays by forcing the same crystal filter for both transmit and receive. 73, Joel - W4JBB On 2/12/14, 5:33 PM, Dick Frey wrote: __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Why won't my K3 work split in FSK-D mode?
MOst frequently for me is I haven't pressed A-B twice to set the second VFO to the same mode etc. as the primary one. Cheers - Bill, AE6JV - Bill Frantz| Re: Hardware Management Modes: | Periwinkle (408)356-8506 | If there's a mode, there's a | 16345 Englewood Ave www.pwpconsult.com | failure mode. - Jerry Leichter | Los Gatos, CA 95032 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] Upright Whip Antenna
I am using an MFJ-1899T antenna on my KX3 using the right angle BNC connector I purchased from Elecraft. My issue is that the antenna will not stand up straight because the right angle connector does not lock into place. It rotates freely around the axis connected to the KX3. Is there a solution for keeping the antenna upright other than holding it with my fingers which will probably affect SWR. 73, Rich NC4EN __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] Percentage of KX3 owners who bought a KXPA100
A while ago, someone postulated about the percentage of KX3 owners who might also buy a KXPA100 amp. At the time, I though that it sounded a bit high. Today I read that KXPA100 #605 had been received, as has KX3 #5485. My math shows that only 11% of KX3 owners are also owners of the KXPA100. I don't expect this percentage to change much with time, now that (I believe) Elecraft has caught up with all of the pre-orders on the KXPA100 and, certainly, the KX3. I also believe that almost everyone who was on the proverbial fence about either, has jumped in and ordered at this point. It will be interesting to see what the trend is on the 2m module. I'm hoping that the big announcement will be made soon, and the gate opened for pre-orders on the 2m module; at least, before I go in the hospital for surgery on the 24th. 72/73 de Jim - AD6CW __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Antenna question
I love my 40 mtr 4 SQ it's in the woods of FAR NW WI. Poor soil, good ground system (36 each vertical) and very exact construction. Antennas are surrounded by much taller aspen. I moved from a location where I had a big 2 element at 125'. It feels very similar and at 72, I'm done climbing big towers. Sure is easier to maintain/fix/adjust. For those considering, it's verybroadbanded and even has directivity on 30! Worked FT5ZM on CW and rtty on 30 using the 40 mtr 4 SQ. It stinks for ss on 40, but great band opener for DX (further away the better). John, N0IJ Sent from my iPhone On Feb 12, 2014, at 5:34 PM, Jack vhfp...@gmail.com wrote: When we had our place in Silver Springs, NV, our 40-meter 4-square, with an excellent radial system, was killer. I cannot imagine anything short of a full-size 2, possibly 3, element yagi up at least 70 feet even coming close. I would think it would take the 3-element yagi to even approach the F/B ratio of the 4-square. On the beach works *real* well. Any antenna we tried at Ballenita, Ecuador, worked great. The QTH was roughly 10-meters inland from high-tide! :) Jack, W6NF/VE4SNA/HC2UA Shelley, K7MKL/HC2UB On 2/12/2014 3:17 PM, Jim Brown wrote: On 2/12/2014 7:29 AM, Wes (N7WS) wrote: Also known as, The worst horizontal antenna is better than the best vertical antenna theory. It's always worked out for me. Now if I lived on the beach... Hi Wes, Based on my model studies, I wouldn't go that far -- it depends on how high either of the antennas are, as well as the quality of the ground. If your criteria is low angle radiation and you have better than average soil, a vertical dipole that's 20 ft or more above ground will beat a low dipole. Here in the mountains, our soil is stinko, so the only band where a vertical beats a horizontal dipole is 160M. 73, Jim K9YC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Antenna question
Surprised me too. It ALWAYS produces results. Eric KE6US On 2/12/2014 3:46 PM, Phil Wheeler wrote: Bill, You don't trust the traditional Smoke Test? :-) 73, Phil w7ox On 2/12/14, 2:45 PM, Bill Turner wrote: I see a number of people are trying to calculate whether any damage would be done by the situation originally posted. Frankly, I think this is a dangerous approach. There are too many variables in a particular situation to risk depending on calculations when expensive equipment is endangered. If you must go ahead with your situation, I strongly suggest, as others have done, that you measure the interaction rather than try to calculate it. 73, Bill W6WRT __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K2 Won't power on
Lifting one end of R45 still showed 70 ohms. Lifting one end of RFC4 increased to 87 ohms. I left the leg of R45 disconnected when taking this measurement, and I want to confirm whether I should leave the components disconnected as I go through, or reconnect them before moving on to the next. Thanks, Jeremy VA3ZTF -- View this message in context: http://elecraft.365791.n2.nabble.com/K2-Won-t-power-on-tp7584083p7584150.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Antenna question
ORIGINAL MESSAGE: (may be snipped) On 2/12/2014 3:46 PM, Phil Wheeler wrote: Bill, You don't trust the traditional Smoke Test? :-) 73, Phil w7ox REPLY: Of course I trust it. I use it whenever I need smoke. :-) 73, Bill W6WRT __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Why won't my K3 work split in FSK-D mode?
I don't think it's supposed to. I don't remember why. ...bill nr4c Sent from my Verizon Wireless 4G LTE DROID Dick Frey k4xu.1...@gmail.com wrote: -- Dick - K4XU __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K2 Won't power on
Jeremy, Leave them disconnected until you find the culprit. Take notes of waht you have done if necessary so you can restore things after you have found the problem. 73, Don W3FPR On 2/12/2014 8:46 PM, JeremyJones wrote: Lifting one end of R45 still showed 70 ohms. Lifting one end of RFC4 increased to 87 ohms. I left the leg of R45 disconnected when taking this measurement, and I want to confirm whether I should leave the components disconnected as I go through, or reconnect them before moving on to the next. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Why won't my K3 work split in FSK-D mode?
When using RTTY I only use FSK-D and DX pileups always mean split. You must have something misconfigured. You're welcome to email me direct and we can compare settings. 73 jim ab3cv On Wed, Feb 12, 2014 at 8:56 PM, bill conkling n...@widomaker.com wrote: I don't think it's supposed to. I don't remember why. ...bill nr4c Sent from my Verizon Wireless 4G LTE DROID Dick Frey k4xu.1...@gmail.com wrote: -- Dick - K4XU __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Why won't my K3 work split in FSK-D mode?
ORIGINAL MESSAGE: (may be snipped) On 2/12/2014 4:07 PM, Bill Frantz wrote: MOst frequently for me is I haven't pressed A-B twice to set the second VFO to the same mode etc. as the primary one. REPLY: For my style of split operation I always press it twice. This would be a nice option in the Config menu: Press once to transfer frequency only or to transfer all A VFO settings. 73, Bill W6WRT __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] [Elecraft_K3] curious behavior of the K3/P3, etc.
Let's see if I can make this clearer. Let's suppose you are listening to a CW signal that is on exactly 14020.00 kHz. Let's also suppose that the sidetone pitch in your K3 is set to 500 Hz. Leaving aside all the frequency translation stuff that goes on inside a superhet and just talking about the frequencies you observe from outside the radio, what actually happens in the receiver is that its effective BFO frequency (which digital-mode amateurs today often refer to as the suppressed carrier frequency) is tuned to 14020.50 kHz. What you hear in your speaker or headphones is the 500 Hz beat between the BFO and the actual transmitted signal. Note that in CW, the K3's dial displays the actual CW frequency, not the suppressed carrier frequency as it does in SSB. You can verify this in practice by tuning in a CW signal until its pitch exactly matches your sidetone pitch, then changing modes to LSB. In order to hear the same thing you hear in CW, you will find that you have to tune the dial frequency higher by an amount equal to your sidetone pitch, at which point what you hear in LSB will be the same as what you heard in CW. Actually, there is a VFO OFS setting in the K3 (under CONFIG:CW WGHT, 5 button) that will do this retune automatically for you when you switch modes, if that is how you want the rig to behave. OK, so with the suppressed carrier tuned to 14020.50 kHz, the centre of your filter bandpass is on 14020.00 (assuming you have left FC equal to the sidetone pitch). Let's suppose your filter is set to 400 Hz bandwidth, so that it passes audio frequencies between 300 Hz and 700 Hz. The frequency at the bottom of the audio range (the lo-cut frequency) is 300 Hz below the suppressed carrier, i.e. 14020.20 kHz. The frequency at the top of the audio range (the hi-cut frequency) is 700 Hz below the suppressed carrier, i.e. 14019.80 kHz. Note that the lo-cut audio frequency is the higher frequency at RF, and the hi-cut audio frequency is the lower frequency at RF. The reason the AF and RF bandpasses are inverted with respect to one another is that normal CW in the K3 is on the lower sideband, i.e. the suppressed carrier or BFO is above the frequency you are listening to. In CW-REV, the suppressed carrier is below the frequency you are listening to (i.e. the receiver is in USB), and in that case the AF and RF bandpasses are no longer inverted with respect to one another. Hope this helps. 73, Rich VE3KI On 2014-02-12 2:44 PM, Scott wrote: Thanks Rich, that is a very clear and thorough explanation! I cannot relate all to my level of understanding, but your explanation is complete so I can study it. In really basic language, what I understand is that adjusting the width will only affect the upper limit until I get it narrow enough so that both are in an acceptable range. However, I am still left with some doubts: particularly, why does the upper limit change when I adjust the lo-cut, and the lower limit change when I adjust the hi-cut? Thus, if I want to narrow my bandwidth to avoid a station above the desired one, I must adjust the lo-cut (I can see this happen on the P3). This occurs on all bands on CW. You are good at giving explanations—I hope I am not trying your patience! Thanks, Scott AA0AA Date: Tue, 11 Feb 2014 14:06:56 -0500 From: Richard Ferch ve3...@storm.ca mailto:ve3...@storm.ca To: elecraft@mailman.qth.net mailto:elecraft@mailman.qth.net elecraft@mailman.qth.net mailto:elecraft@mailman.qth.net OK, if you're talking about CW, the K3's normal CW is on lower sideband. In CW the filter behaviour gets tangled up with the sidetone pitch setting, which is also the default FC (centre frequency) for the filters in CW mode. Suppose the sidetone pitch/FC is 500 Hz and the BW (bandwidth) is 2000 Hz. Given those numbers, the calculated hi-cut and lo-cut frequencies would be 1500 Hz (FC + BW/2) and -500 Hz (FC - BW/2). That's a minus sign on the lo-cut frequency, meaning it's on the other sideband. The firmware should not allow that; it needs to place the lo-cut frequency on the proper sideband far enough above zero to give adequate carrier and opposite sideband suppression. IIRC, the low-pass cutoff is adjustable in the latest firmware - I believe it can be set to 100 Hz, 200 Hz or 300 Hz. So, with the low-pass cutoff set at 200 Hz, FC at 500 Hz and BW at 2000 Hz, the actual filter bandpass will be from 200 Hz to 1500 Hz. Adjusting the Width control would only affect the upper limit, as the lower limit is fixed by the low-pass cutoff. If the Width setting is sufficiently narrow for the calculated lo-cut frequency to be at or above the low-pass cutoff (100, 200 or 300 Hz), the effect of the Width control becomes symmetric about the centre frequency, as you might have originally expected. Because CW is on the lower sideband, adjusting the Width control only
Re: [Elecraft] K2 Won't power on
I have lifted R45, RFC4, R74, R82 and R97, with only a slight increase from 70 ohms to 87 ohms after lifting RFC4. I'll continue troubleshooting tomorrow by removing any capacitors connected to 12V. I also want to confirm that I should be doing these resistance checks with no power applied. Also, I am using an inexpensive ohm meter. Will that have enough power to charge the capacitors up enough to show the expected resistance? Thanks, Jeremy VA3ZTF -- View this message in context: http://elecraft.365791.n2.nabble.com/K2-Won-t-power-on-tp7584083p7584157.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K2 Won't power on
Jeremy, Yes, you should be doing the resistance checks with no power applied. Inexpensive ohmmeter? Well, if it is a digital multimeter in resistance mode, you should be OK, but i it is an analog VOM or VTVM, it may not be showing you the real picture because the voltage may be sufficient to turn on semiconductor junctions. 73, Don W3FPR On 2/12/2014 9:15 PM, JeremyJones wrote: I have lifted R45, RFC4, R74, R82 and R97, with only a slight increase from 70 ohms to 87 ohms after lifting RFC4. I'll continue troubleshooting tomorrow by removing any capacitors connected to 12V. I also want to confirm that I should be doing these resistance checks with no power applied. Also, I am using an inexpensive ohm meter. Will that have enough power to charge the capacitors up enough to show the expected resistance? Thanks, Jeremy VA3ZTF -- View this message in context: http://elecraft.365791.n2.nabble.com/K2-Won-t-power-on-tp7584083p7584157.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] P3 160M issue
Hi, I just bought a used P3 with SVGA card and am experiencing something interesting on 160M: When on all other bands the P3 display presents with an appropriate S meter reading on the left of the P3 monitor but on 160 my S level in the K3 is S10+ but the P3 display does not display higher than S9 so all I can see is the noise level, no signals. When going to all other bands the P3 acts as expected and the S meter on the P3 shows: +35 on 80M, +50 on 60M, +35 on 40M, +60 on 30M, +35 on 20M, +40 on 17M, +45 on 15M, +35 on 17M, +20 on 10M and +35 on 6M - All of these bands I see a waterfall display. When the K3 is on 160M, all you see are the lower yellow tips of the RF moving at the top of the VGA, no S readings are displayed on the left side of the VGA monitor. On the P3 monitor it is all blue, pink where the waterfall should be and the highest reading displayed on the left is S9. When I switch to 160M I can immediately see there are signals on 160 but the reading floats to the top in about 2-3 seconds. Is there a setting I haven't come across yet to address this? 73, Gary KA1J --- This email is free from viruses and malware because avast! Antivirus protection is active. http://www.avast.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] P3 160M issue
You should adjust the REF LVL. See the column of switches on the right? matt W6NIA On Wed, 12 Feb 2014 22:32:19 -0500, you wrote: Hi, I just bought a used P3 with SVGA card and am experiencing something interesting on 160M: When on all other bands the P3 display presents with an appropriate S meter reading on the left of the P3 monitor but on 160 my S level in the K3 is S10+ but the P3 display does not display higher than S9 so all I can see is the noise level, no signals. When going to all other bands the P3 acts as expected and the S meter on the P3 shows: +35 on 80M, +50 on 60M, +35 on 40M, +60 on 30M, +35 on 20M, +40 on 17M, +45 on 15M, +35 on 17M, +20 on 10M and +35 on 6M - All of these bands I see a waterfall display. When the K3 is on 160M, all you see are the lower yellow tips of the RF moving at the top of the VGA, no S readings are displayed on the left side of the VGA monitor. On the P3 monitor it is all blue, pink where the waterfall should be and the highest reading displayed on the left is S9. When I switch to 160M I can immediately see there are signals on 160 but the reading floats to the top in about 2-3 seconds. Is there a setting I haven't come across yet to address this? 73, Gary KA1J --- This email is free from viruses and malware because avast! Antivirus protection is active. http://www.avast.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Matt Zilmer, W6NIA -- Give me six hours to chop down a tree and I will spend the first four sharpening the axe. -A. Lincoln __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K3 10Mhz IF questions with the latest beta
Starting to setup for some LF up conversion with the new 10Mhz IF. Settings: XV1 on XV1 RF 0 XV1 IF 10 XV1 PWR L .05 XV1 OFS 0.00 XV1 ADR trn1 When I exit the CONFIG menu the frequency shows 333.045.80. Seems odd... P3 display shows 14.333.037.30 for the cursor location. I would have thought the display would have read KHz with some reasonable values and the P3 would likewise display the desired result. I must be doing something wrong. Suggestions? jim ab3cv __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] P3 160M issue
Thanks for all the replies. I'd tried the Ref LVL but didn't get that point regarding the adjustment with the pot. Yes, it looks like it had been set up for this earlier. I didn't realize about the two inter-related functions with that switch. Now I am getting it to work. Still reading the manual but now I have it so I can make sense of it. Thanks! 73, Gary KA1J I'm guessing the other bands have already been setup this way but 160m has not, try this below: tap the REF LVL button and turn the knob so the Ref Lvl (-dBm): numbers go down then when you have the grass (noise floor) at the bottom hold the REF LVL button and turn the knob until you have the 'scale' showing thetop signals at the level you want to see On 2/12/2014 9:32 PM, Gary Smith wrote: Hi, I just bought a used P3 with SVGA card and am experiencing something interesting on 160M: When on all other bands the P3 display presents with an appropriate S meter reading on the left of the P3 monitor but on 160 my S level in the K3 is S10+ but the P3 display does not display higher than S9 so all I can see is the noise level, no signals. When going to all other bands the P3 acts as expected and the S meter on the P3 shows: +35 on 80M, +50 on 60M, +35 on 40M, +60 on 30M, +35 on 20M, +40 on 17M, +45 on 15M, +35 on 17M, +20 on 10M and +35 on 6M - All of these bands I see a waterfall display. When the K3 is on 160M, all you see are the lower yellow tips of the RF moving at the top of the VGA, no S readings are displayed on the left side of the VGA monitor. On the P3 monitor it is all blue, pink where the waterfall should be and the highest reading displayed on the left is S9. When I switch to 160M I can immediately see there are signals on 160 but the reading floats to the top in about 2-3 seconds. Is there a setting I haven't come across yet to address this? 73, Gary KA1J -- GB 73 K5OAI Sam Morgan --- This email is free from viruses and malware because avast! Antivirus protection is active. http://www.avast.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 10Mhz IF questions with the latest beta
Hi Jim, If you tune below 0.000.00 as indicated on the display, you encounter a leetle buglet not yet fixed. Try rotating the VFO clockwise until you get above 0. Wayne N6KR On Feb 12, 2014, at 7:47 PM, Jim Miller j...@jtmiller.com wrote: Starting to setup for some LF up conversion with the new 10Mhz IF. Settings: XV1 on XV1 RF 0 XV1 IF 10 XV1 PWR L .05 XV1 OFS 0.00 XV1 ADR trn1 When I exit the CONFIG menu the frequency shows 333.045.80. Seems odd... P3 display shows 14.333.037.30 for the cursor location. I would have thought the display would have read KHz with some reasonable values and the P3 would likewise display the desired result. I must be doing something wrong. Suggestions? jim ab3cv __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 10Mhz IF questions with the latest beta
Just entered 0 for frequency via buttons and 0.490.00 (MHz) showed up on VFOA display. Can't go below 490. If I enter via buttons 1 as the frequency I get to 1.000.00 (presumably Mhz) but still can't dial below 490. The 630M band will be 472-479Khz so that won't work. Plus I was hoping this would work from 10 to 10.5Mhz to allow for SWL activity outside the 630M band. I've got the general coverage filters. Thanks jim ab3cv -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-10Mhz-IF-questions-with-the-latest-beta-tp7584161p7584164.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] KX3 TX EQ menu feature
Hi, I started to use today my KX3 + KPA100 as my main rig at home. I always dream using the same rig at home and during portable outdoor. I also wish to limit the settings adjustment at a minimum when switching between both separate activities. To have different settings for TX EQ would be really great, and I really think this wish do not imply such big development for Elecraft team. TX EQ menu could be set to : 1- OFF (flat EQ) 2- EQ 1 (8 bands settings for home operation, rag chew or DX) 3- EQ 2 (8 bands settings for outdoors, optimize for more audio punch) It will give us also more flexibility when trying to compare between to different TX setup on the air with other guys if we could switch fast between 2 different settings. I really hope this feature could be implemented in a future release. Thanks Elecraft for all the works !!! Regards, J-F VA2SS -- View this message in context: http://elecraft.365791.n2.nabble.com/KX3-TX-EQ-menu-feature-tp7584165.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 10Mhz IF questions with the latest beta
Also switching to 160 and back again reverts to 334.076.00 odd display. jim ab3cv (chasing V26M...) -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-10Mhz-IF-questions-with-the-latest-beta-tp7584161p7584166.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] # 5607 first contact QRP!
Congratulations Dale !! You make me remember my first one too !! Best 73. J-F VA2SS -- View this message in context: http://elecraft.365791.n2.nabble.com/5607-first-contact-QRP-tp7583670p7584167.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Percentage of KX3 owners who bought a KXPA100
Greetings, I'm sure a number of people are in the same boat as me. I plan on getting one but am holding off for now for a few reasons. 1) finances 2) letting the bulk of the bugs get worked out 3) waiting to hear feedback from others 4) did I mention finances...boy diapers are expensive 5) didn't order one initially due to the delay of order fulfillment 6) as you mentioned the 2 meter module, cant decide if I want that or the amp first 7) the xyl factor... God forbid I buy more radio gear before buying her the extremely overpriced purse that she wants...8) something at home always needs to be repaired/replaced taking from the radio fund... I'm sure the ratio will move up as time goes on. Good luck with your surgery Jim. I wish you a speedy recovery. 73 Steve KS6PD On Wednesday, February 12, 2014, Jim Lowman jmlow...@sbcglobal.net wrote: A while ago, someone postulated about the percentage of KX3 owners who might also buy a KXPA100 amp. At the time, I though that it sounded a bit high. Today I read that KXPA100 #605 had been received, as has KX3 #5485. My math shows that only 11% of KX3 owners are also owners of the KXPA100. I don't expect this percentage to change much with time, now that (I believe) Elecraft has caught up with all of the pre-orders on the KXPA100 and, certainly, the KX3. I also believe that almost everyone who was on the proverbial fence about either, has jumped in and ordered at this point. It will be interesting to see what the trend is on the 2m module. I'm hoping that the big announcement will be made soon, and the gate opened for pre-orders on the 2m module; at least, before I go in the hospital for surgery on the 24th. 72/73 de Jim - AD6CW __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K1-4
For sale K1-4 Bands: 40,30,20 and 17meters KAT1 : Automatic Tuner KNB1: Noise Blanker Backlight Mod It is a surplus to my needs, now that I have a KX3. Asking $375. Very good condition with limited use. Clarence, KH6G __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 10Mhz IF questions with the latest beta
Switch to the transverter band you setup using the BAND up/dwn buttons. When you see 334.076.00, move the VFO clockwise to pass the 0.000 point and continue upwards if you're headed for 475 kHz territory, set the VFO to Course tuning to get there faster. DON'T enter direct frequency, doing that will change the freq. of the 160M band slot, it just doesn't work the way you are expecting. That is why when you move down after entering the freq. you hit a wall at 490 kHz. For now, if you have a frequency in the transverter band to QSY to, move there with the VFO. Running the 10 MHz IF here with dual diversity RX and TX. Currently running a side-by-side digital mode TX test tonight around 475.5 kHz. GL 73 Eric NO3M / WG2XJM On 02/12/2014 11:09 PM, Jim AB3CV wrote: Also switching to 160 and back again reverts to 334.076.00 odd display. jim ab3cv (chasing V26M...) __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Percentage of KX3 owners who bought a KXPA100
I have one. Luckily money is not an issue. Up dates? Who cares! It works great as is. Software bugs, eh. Ask me I am an old software developer. It is a great companion for the kx3. It also drives a linear nicely George,W6GF -- On Wed, Feb 12, 2014 8:24 PM PST Stephen Selberg wrote: Greetings, I'm sure a number of people are in the same boat as me. I plan on getting one but am holding off for now for a few reasons. 1) finances 2) letting the bulk of the bugs get worked out 3) waiting to hear feedback from others 4) did I mention finances...boy diapers are expensive 5) didn't order one initially due to the delay of order fulfillment 6) as you mentioned the 2 meter module, cant decide if I want that or the amp first 7) the xyl factor... God forbid I buy more radio gear before buying her the extremely overpriced purse that she wants...8) something at home always needs to be repaired/replaced taking from the radio fund... I'm sure the ratio will move up as time goes on. Good luck with your surgery Jim. I wish you a speedy recovery. 73 Steve KS6PD On Wednesday, February 12, 2014, Jim Lowman jmlow...@sbcglobal.net wrote: A while ago, someone postulated about the percentage of KX3 owners who might also buy a KXPA100 amp. At the time, I though that it sounded a bit high. Today I read that KXPA100 #605 had been received, as has KX3 #5485. My math shows that only 11% of KX3 owners are also owners of the KXPA100. I don't expect this percentage to change much with time, now that (I believe) Elecraft has caught up with all of the pre-orders on the KXPA100 and, certainly, the KX3. I also believe that almost everyone who was on the proverbial fence about either, has jumped in and ordered at this point. It will be interesting to see what the trend is on the 2m module. I'm hoping that the big announcement will be made soon, and the gate opened for pre-orders on the 2m module; at least, before I go in the hospital for surgery on the 24th. 72/73 de Jim - AD6CW __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 10Mhz IF questions with the latest beta
Jim, You can't use FREQ ENT if XVn RF is set to 0, because there's a regular K3 band (160 m) that captures that range. You got 490 kHz when you entered 0 using FREQ ENT because that the lowest the K3 can tune on 160 m. If you just switch to your 10-MHz transverter band, then rotate the VFO, you should be able to get to the desired frequency. Wayne N6KR On Feb 12, 2014, at 8:06 PM, Jim AB3CV j...@jtmiller.com wrote: Just entered 0 for frequency via buttons and 0.490.00 (MHz) showed up on VFOA display. Can't go below 490. If I enter via buttons 1 as the frequency I get to 1.000.00 (presumably Mhz) but still can't dial below 490. The 630M band will be 472-479Khz so that won't work. Plus I was hoping this would work from 10 to 10.5Mhz to allow for SWL activity outside the 630M band. I've got the general coverage filters. Thanks jim ab3cv -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-10Mhz-IF-questions-with-the-latest-beta-tp7584161p7584164.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Percentage of KX3 owners who bought a KXPA100
Re: I'm sure a number of people are in the same boat as me.Yep, Steve, we are on the same cruise, and our boat is floating on the water in my kitchen! Just found out today that I may have a water leak in the kitchen under the slab. While they have the slab dug up the wife will be thinking new cabinets, countertops, somewhat different layout, etc., etc., etc. By the time we get all of this done, I probably could have bought 10 KXPA100's...maybe 20!I am walking around mumbling a very Eeyore-like, Oh me, oh my!MarkKE6BB From: Stephen Selbergke6...@gmail.com Sent: Wed, Feb 12, 2014 at 8:25 PM To: Jim Lowman jmlow...@sbcglobal.net; elecraft@mailman.qth.net elecraft@mailman.qth.net Subject: Re: [Elecraft] Percentage of KX3 owners who bought a KXPA100 Greetings,I'm sure a number of people are in the same boat as me. I plan on gettingone but am holding off for now for a few reasons. 1) finances 2) lettingthe bulk of the bugs get worked out 3) waiting to hear feedback from others4) did I mention finances.. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Percentage of KX3 owners who bought a KXPA100
I am one of those that opted for the KPA500 instead. I have a Hardrock50 with the QSK board which keeps up with the KPA500 quite nicely. I have the best of both worlds 200w on 30m and 500w everywhere else. My KX3 does yeoman's duty in the shack. The K2 is dedicated to RTTY, JT65 and PSK and occasional phone. I have an SO2R arrangement ready to pounce when the opportunity strikes. Of course I do QRP as well. I just got a card in the mail from a DX requesting confirmation. How often does that happen? It was for a QRP contact with Japan on 80m. He was running 1 kW and I was running 5 watts. He was running an FT920 and I was running a KX3. Most of the time I am running 500w on 80m. When propagation is good and the DX is strong - I run 5w. Ariel NY4G Date: Wed, 12 Feb 2014 22:12:02 -0800 From: rv6am...@yahoo.com To: elecraft@mailman.qth.net Subject: Re: [Elecraft] Percentage of KX3 owners who bought a KXPA100 Re: I'm sure a number of people are in the same boat as me.Yep, Steve, we are on the same cruise, and our boat is floating on the water in my kitchen! Just found out today that I may have a water leak in the kitchen under the slab. While they have the slab dug up the wife will be thinking new cabinets, countertops, somewhat different layout, etc., etc., etc. By the time we get all of this done, I probably could have bought 10 KXPA100's...maybe 20!I am walking around mumbling a very Eeyore-like, Oh me, oh my!MarkKE6BB From: Stephen Selbergke6...@gmail.com Sent: Wed, Feb 12, 2014 at 8:25 PM To: Jim Lowman jmlow...@sbcglobal.net; elecraft@mailman.qth.net elecraft@mailman.qth.net Subject: Re: [Elecraft] Percentage of KX3 owners who bought a KXPA100 Greetings,I'm sure a number of people are in the same boat as me. I plan on gettingone but am holding off for now for a few reasons. 1) finances 2) lettingthe bulk of the bugs get worked out 3) waiting to hear feedback from others4) did I mention finances.. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] Percentage of KX3 owners who bought a KXPA100
Hello Ariel, I am also using HR50 and KPA500. Could you please give me a wiring diagram among KX3 + HR50 + KPA500 for my reference? It will be a piece of useful information. 73 Johnny VR2XMC 寄件人︰ Ariel Jacala n...@hotmail.com 收件人︰ Mark Petiford rv6am...@yahoo.com; elecraft reflector elecraft@mailman.qth.net 傳送日期︰ 2014年02月13日 (週四) 2:30 PM 主題︰ Re: [Elecraft] Percentage of KX3 owners who bought a KXPA100 I am one of those that opted for the KPA500 instead. I have a Hardrock50 with the QSK board which keeps up with the KPA500 quite nicely. I have the best of both worlds 200w on 30m and 500w everywhere else. My KX3 does yeoman's duty in the shack. The K2 is dedicated to RTTY, JT65 and PSK and occasional phone. I have an SO2R arrangement ready to pounce when the opportunity strikes. Of course I do QRP as well. I just got a card in the mail from a DX requesting confirmation. How often does that happen? It was for a QRP contact with Japan on 80m. He was running 1 kW and I was running 5 watts. He was running an FT920 and I was running a KX3. Most of the time I am running 500w on 80m. When propagation is good and the DX is strong - I run 5w. Ariel NY4G Date: Wed, 12 Feb 2014 22:12:02 -0800 From: rv6am...@yahoo.com To: elecraft@mailman.qth.net Subject: Re: [Elecraft] Percentage of KX3 owners who bought a KXPA100 Re: I'm sure a number of people are in the same boat as me.Yep, Steve, we are on the same cruise, and our boat is floating on the water in my kitchen! Just found out today that I may have a water leak in the kitchen under the slab. While they have the slab dug up the wife will be thinking new cabinets, countertops, somewhat different layout, etc., etc., etc. By the time we get all of this done, I probably could have bought 10 KXPA100's...maybe 20!I am walking around mumbling a very Eeyore-like, Oh me, oh my!MarkKE6BB From: Stephen Selbergke6...@gmail.com Sent: Wed, Feb 12, 2014 at 8:25 PM To: Jim Lowman jmlow...@sbcglobal.net; elecraft@mailman.qth.net elecraft@mailman.qth.net Subject: Re: [Elecraft] Percentage of KX3 owners who bought a KXPA100 Greetings,I'm sure a number of people are in the same boat as me. I plan on gettingone but am holding off for now for a few reasons. 1) finances 2) lettingthe bulk of the bugs get worked out 3) waiting to hear feedback from others4) did I mention finances.. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net/ Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net/ Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KX3 TX EQ menu feature
I would look at the Macros utility, but I am not an expert. 72' -- View this message in context: http://elecraft.365791.n2.nabble.com/KX3-TX-EQ-menu-feature-tp7584165p7584176.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
