Re: [Elecraft] K3 Drift
News to me, Bob -- but the modes you operate may make it more or (in my case) less noticeable. It might be good if you provided more into: * Which modes? * Only after an extended key-down TX period or on receive, too? * How much drift in what period of time? * Do you have the KTCXO3-1TCXO installed in your K3? (which may be what you mean by "temperature controlled crystal") * How are you measuring the frequency to determine the drift -- i.e., how did you conclude it is drifing? that sort of thing. 73, Phil W7OX On 1/12/15 10:40 PM, Robert Sands wrote: KV6X has noticed his temperature controlled crystal is drifting in his K3. I notice it too. This is a new thing. I have never seen a post about K3 drift. Anyone had this problem?? Bob K7VO __ 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 Message delivered to arch...@mail-archive.com
[Elecraft] K3 Drift
KV6X has noticed his temperature controlled crystal is drifting in his K3. I notice it too. This is a new thing. I have never seen a post about K3 drift. Anyone had this problem?? Bob K7VO __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Feature wanted for W2 wattmeter
A better example would be to use a 100 Ohm dummy load and match it with a tuner. Then measure the heat generated by the load. It should be 100W, minus any losses in the tuner and transmission line. wunder K6WRU CM87wj http://observer.wunderwood.org/ On Jan 12, 2015, at 9:26 PM, Vic Rosenthal wrote: > Here is an experiment to show what I mean. > Take a transmitter and connect it to a 50 ohm dummy load through an antenna > tuner. Put a wattmeter between the transmitter and the tuner. > Now adjust the transmitter for 100 watts output and the tuner for 1:1 SWR. > The meter reads 100W forward and zero reflected power. > Now adjust the tuner for an SWR of about 2.5:1. The wattmeter will show > forward power of about 120 watts and reflected power of about 20 watts. Did > I increase the real power output of my transmitter? Did I make my signal > stronger? No. > I want a wattmeter that has an option to indicate 100 watts in this situation. > > Vic K2VCO /4X6GP > >> On Jan 13, 2015, at 6:56 AM, Walter Underwood wrote: >> >> No. That is wrong. Forward and reflected are aspects of the standing wave, >> not power delivered. —wunder, K6WRU >> >>> On Jan 12, 2015, at 8:53 PM, Vic Rosenthal wrote: >>> >>> What I want is just forward - reflected. Neglecting losses, this is what >>> the tx is 'delivering'. In real life somewhat less gets to the antenna. >>> >>> Vic K2VCO /4X6GP >>> On Jan 13, 2015, at 3:19 AM, Fred Jensen wrote: Well ... sort of. Some of the reflected power heats up the ATU and/or PA depending on the match it sees [actually, some of the forward power does too, tuners have forward losses]. "Delivered Power" is somewhat difficult to calculate. Working into a matched, non-reactive load [common for AM broadcast, at least a number of years ago], it's "I squared R" where R is the radiation resistance of the antenna ... and some minor conductor losses in the antenna. Things get pretty sticky if it's not a matched load. 73, Fred K6DGW - Northern California Contest Club - CU in the 50th Running of the Cal QSO Party 3-4 Oct 2015 - www.cqp.org > On 1/12/2015 4:46 PM, Phil & Debbie Salas wrote: > > Actually, "delivered power" is pretty much what you are measuring. > Remember that reflected power is re-reflected by the source and adds > back into the forward power. So in your example, you are transmitting > 1200 watts, having 200 watts reflected, then the 200 watts is > re-reflected by the source giving you the 1200 watts. Of course, there > will be transmission line SWR-related losses. __ 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 Message delivered to k2vco@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 >>> Message delivered to wun...@wunderwood.org >> >> __ >> 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 >> Message delivered to k2vco@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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Feature wanted for W2 wattmeter
Here is an experiment to show what I mean. Take a transmitter and connect it to a 50 ohm dummy load through an antenna tuner. Put a wattmeter between the transmitter and the tuner. Now adjust the transmitter for 100 watts output and the tuner for 1:1 SWR. The meter reads 100W forward and zero reflected power. Now adjust the tuner for an SWR of about 2.5:1. The wattmeter will show forward power of about 120 watts and reflected power of about 20 watts. Did I increase the real power output of my transmitter? Did I make my signal stronger? No. I want a wattmeter that has an option to indicate 100 watts in this situation. Vic K2VCO /4X6GP > On Jan 13, 2015, at 6:56 AM, Walter Underwood wrote: > > No. That is wrong. Forward and reflected are aspects of the standing wave, > not power delivered. —wunder, K6WRU > >> On Jan 12, 2015, at 8:53 PM, Vic Rosenthal wrote: >> >> What I want is just forward - reflected. Neglecting losses, this is what the >> tx is 'delivering'. In real life somewhat less gets to the antenna. >> >> Vic K2VCO /4X6GP >> >>> On Jan 13, 2015, at 3:19 AM, Fred Jensen wrote: >>> >>> Well ... sort of. Some of the reflected power heats up the ATU and/or PA >>> depending on the match it sees [actually, some of the forward power does >>> too, tuners have forward losses]. "Delivered Power" is somewhat difficult >>> to calculate. Working into a matched, non-reactive load [common for AM >>> broadcast, at least a number of years ago], it's "I squared R" where R is >>> the radiation resistance of the antenna ... and some minor conductor losses >>> in the antenna. Things get pretty sticky if it's not a matched load. >>> >>> 73, >>> >>> Fred K6DGW >>> - Northern California Contest Club >>> - CU in the 50th Running of the Cal QSO Party 3-4 Oct 2015 >>> - www.cqp.org >>> On 1/12/2015 4:46 PM, Phil & Debbie Salas wrote: Actually, "delivered power" is pretty much what you are measuring. Remember that reflected power is re-reflected by the source and adds back into the forward power. So in your example, you are transmitting 1200 watts, having 200 watts reflected, then the 200 watts is re-reflected by the source giving you the 1200 watts. Of course, there will be transmission line SWR-related losses. >>> >>> __ >>> 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 >>> Message delivered to k2vco@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 >> Message delivered to wun...@wunderwood.org > > __ > 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 > Message delivered to k2vco@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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Feature wanted for W2 wattmeter
Sounds like a plan, Vic :-) BTW -- did you manage to get that antenna repaired? 73, Phil W7OX On 1/12/15 9:09 PM, Vic Rosenthal wrote: So why do I need an amplifier? I can just double my power by detuning my antenna tuner! Vic K2VCO /4X6GP On Jan 13, 2015, at 6:54 AM, Walter Underwood wrote: All power ends in a load. Forward and reverse power measures standing waves, but all those waves go into some kind of load. Nearly all of it, if you are lucky, goes to the antenna. The rest goes to heat. Forward and reverse is just a way to measure standing waves. It does not mean the some percentage of “reverse power” is disappearing into your power amplifier. If you are running legal limit into forward power, you are quite likely running illegal power into the the antenna. I was happy to get a C+ in my fields and waves class at Rice, but I do understand this stuff. wunder K6WRU CM87wj http://observer.wunderwood.org/ On Jan 12, 2015, at 8:32 PM, Vic Rosenthal wrote: I'm talking about forward minus reflected power. If you neglect losses, that is how much power gets to the antenna to be radiated. A wattmeter that measures forward power will be misleading if the SWR is high. My antenna has an SWR of about 2.5:1 on 40 m. When the transmitter delivers 100 watts to the line, there is about 120 watts forward and 20 watts reflected. I want a mode in which the wattmeter reads 100 watts in this situation. Maybe 'delivered' is a bad choice of word. I mean something like 'power delivered by the transmitter'. Obviously it would take magic to know how much power gets to the antenna after losses! Vic K2VCO /4X6GP __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Feature wanted for W2 wattmeter
So why do I need an amplifier? I can just double my power by detuning my antenna tuner! Vic K2VCO /4X6GP > On Jan 13, 2015, at 6:54 AM, Walter Underwood wrote: > > All power ends in a load. > > Forward and reverse power measures standing waves, but all those waves go > into some kind of load. Nearly all of it, if you are lucky, goes to the > antenna. The rest goes to heat. Forward and reverse is just a way to measure > standing waves. It does not mean the some percentage of “reverse power” is > disappearing into your power amplifier. > > If you are running legal limit into forward power, you are quite likely > running illegal power into the the antenna. > > I was happy to get a C+ in my fields and waves class at Rice, but I do > understand this stuff. > > wunder > K6WRU > CM87wj > http://observer.wunderwood.org/ > >> On Jan 12, 2015, at 8:32 PM, Vic Rosenthal wrote: >> >> I'm talking about forward minus reflected power. If you neglect losses, that >> is how much power gets to the antenna to be radiated. A wattmeter that >> measures forward power will be misleading if the SWR is high. My antenna has >> an SWR of about 2.5:1 on 40 m. When the transmitter delivers 100 watts to >> the line, there is about 120 watts forward and 20 watts reflected. I want a >> mode in which the wattmeter reads 100 watts in this situation. >> >> Maybe 'delivered' is a bad choice of word. I mean something like 'power >> delivered by the transmitter'. Obviously it would take magic to know how >> much power gets to the antenna after losses! >> >> Vic K2VCO /4X6GP >> >>> On Jan 13, 2015, at 12:08 AM, Phil Hystad wrote: >>> >>> Vic, >>> >>> What do you mean by "delivered power"? I presume you mean delivered to the >>> antenna (aka antenna system) but are you thinking power input to the W2 >>> minus all the losses. By all losses I mean all losses on transmission line >>> due to just plane old cable loss and higher losses due to higher SWR plus >>> any loss in tuner or other devices between W2 and the aether. >>> >>> Because, due to conservation of energy, that RF energy either goes out into >>> Electromagnetic waves (radiated) or it ends up as heat-loss somewhere in >>> the system. >>> >>> And, given all that, I don't think any RF/SWR power meter on the market can >>> measure "delivered power". >>> >>> Or, are you talking about something else. >>> >>> 73, phil, K7PEH >>> >>> On Jan 12, 2015, at 11:31 AM, Vic Rosenthal 4X6GP/K2VCO wrote: I definitely want an LP100A, but I HAVE a W2, and while it is not as accurate, I still would like to see the delivered power! >> On 12 Jan 2015 21:12, Jim Brown wrote: >> On Mon,1/12/2015 7:56 AM, Vic Rosenthal 4X6GP/K2VCO wrote: >> I would like the W2 wattmeter to be able to display "delivered" power, >> that is, forward power minus reflected power. > > You want N8LP's excellent LP-100A. I had lusted after one for quite a > while, and bought W6OSP's unit after he died for about half price. The > LP-100A supports two couplers, which can be deployed on the outputs of > both transmitters in an SO2R setup, or on input and output of a power > amp. The LP-100A measures the complex Z at the coupler, so it can > measure the input Z of the amplifier under dynamic conditions. > > Now that I can measure power more accurately, I am able to run a dB or > more closer to legal limit when I want to for contesting. > > 73, Jim K9YC -- 73, Vic, 4X6GP/K2VCO Rehovot, Israel http://www.qsl.net/k2vco/ __ 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 Message delivered to phys...@mac.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 >> Message delivered to wun...@wunderwood.org > > __ > 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 > Message delivered to k2vco@gmail.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfa
Re: [Elecraft] Feature wanted for W2 wattmeter
No. That is wrong. Forward and reflected are aspects of the standing wave, not power delivered. —wunder, K6WRU On Jan 12, 2015, at 8:53 PM, Vic Rosenthal wrote: > What I want is just forward - reflected. Neglecting losses, this is what the > tx is 'delivering'. In real life somewhat less gets to the antenna. > > Vic K2VCO /4X6GP > >> On Jan 13, 2015, at 3:19 AM, Fred Jensen wrote: >> >> Well ... sort of. Some of the reflected power heats up the ATU and/or PA >> depending on the match it sees [actually, some of the forward power does >> too, tuners have forward losses]. "Delivered Power" is somewhat difficult >> to calculate. Working into a matched, non-reactive load [common for AM >> broadcast, at least a number of years ago], it's "I squared R" where R is >> the radiation resistance of the antenna ... and some minor conductor losses >> in the antenna. Things get pretty sticky if it's not a matched load. >> >> 73, >> >> Fred K6DGW >> - Northern California Contest Club >> - CU in the 50th Running of the Cal QSO Party 3-4 Oct 2015 >> - www.cqp.org >> >>> On 1/12/2015 4:46 PM, Phil & Debbie Salas wrote: >>> >>> Actually, "delivered power" is pretty much what you are measuring. >>> Remember that reflected power is re-reflected by the source and adds >>> back into the forward power. So in your example, you are transmitting >>> 1200 watts, having 200 watts reflected, then the 200 watts is >>> re-reflected by the source giving you the 1200 watts. Of course, there >>> will be transmission line SWR-related losses. >> >> __ >> 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 >> Message delivered to k2vco@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 > Message delivered to wun...@wunderwood.org __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Feature wanted for W2 wattmeter
What I want is just forward - reflected. Neglecting losses, this is what the tx is 'delivering'. In real life somewhat less gets to the antenna. Vic K2VCO /4X6GP > On Jan 13, 2015, at 3:19 AM, Fred Jensen wrote: > > Well ... sort of. Some of the reflected power heats up the ATU and/or PA > depending on the match it sees [actually, some of the forward power does too, > tuners have forward losses]. "Delivered Power" is somewhat difficult to > calculate. Working into a matched, non-reactive load [common for AM > broadcast, at least a number of years ago], it's "I squared R" where R is the > radiation resistance of the antenna ... and some minor conductor losses in > the antenna. Things get pretty sticky if it's not a matched load. > > 73, > > Fred K6DGW > - Northern California Contest Club > - CU in the 50th Running of the Cal QSO Party 3-4 Oct 2015 > - www.cqp.org > >> On 1/12/2015 4:46 PM, Phil & Debbie Salas wrote: >> >> Actually, "delivered power" is pretty much what you are measuring. >> Remember that reflected power is re-reflected by the source and adds >> back into the forward power. So in your example, you are transmitting >> 1200 watts, having 200 watts reflected, then the 200 watts is >> re-reflected by the source giving you the 1200 watts. Of course, there >> will be transmission line SWR-related losses. > > __ > 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 > Message delivered to k2vco@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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Feature wanted for W2 wattmeter
All power ends in a load. Forward and reverse power measures standing waves, but all those waves go into some kind of load. Nearly all of it, if you are lucky, goes to the antenna. The rest goes to heat. Forward and reverse is just a way to measure standing waves. It does not mean the some percentage of “reverse power” is disappearing into your power amplifier. If you are running legal limit into forward power, you are quite likely running illegal power into the the antenna. I was happy to get a C+ in my fields and waves class at Rice, but I do understand this stuff. wunder K6WRU CM87wj http://observer.wunderwood.org/ On Jan 12, 2015, at 8:32 PM, Vic Rosenthal wrote: > I'm talking about forward minus reflected power. If you neglect losses, that > is how much power gets to the antenna to be radiated. A wattmeter that > measures forward power will be misleading if the SWR is high. My antenna has > an SWR of about 2.5:1 on 40 m. When the transmitter delivers 100 watts to the > line, there is about 120 watts forward and 20 watts reflected. I want a mode > in which the wattmeter reads 100 watts in this situation. > > Maybe 'delivered' is a bad choice of word. I mean something like 'power > delivered by the transmitter'. Obviously it would take magic to know how much > power gets to the antenna after losses! > > Vic K2VCO /4X6GP > >> On Jan 13, 2015, at 12:08 AM, Phil Hystad wrote: >> >> Vic, >> >> What do you mean by "delivered power"? I presume you mean delivered to the >> antenna (aka antenna system) but are you thinking power input to the W2 >> minus all the losses. By all losses I mean all losses on transmission line >> due to just plane old cable loss and higher losses due to higher SWR plus >> any loss in tuner or other devices between W2 and the aether. >> >> Because, due to conservation of energy, that RF energy either goes out into >> Electromagnetic waves (radiated) or it ends up as heat-loss somewhere in the >> system. >> >> And, given all that, I don't think any RF/SWR power meter on the market can >> measure "delivered power". >> >> Or, are you talking about something else. >> >> 73, phil, K7PEH >> >> >>> On Jan 12, 2015, at 11:31 AM, Vic Rosenthal 4X6GP/K2VCO >>> wrote: >>> >>> I definitely want an LP100A, but I HAVE a W2, and while it is not as >>> accurate, I still would like to see the delivered power! >>> On 12 Jan 2015 21:12, Jim Brown wrote: > On Mon,1/12/2015 7:56 AM, Vic Rosenthal 4X6GP/K2VCO wrote: > I would like the W2 wattmeter to be able to display "delivered" power, > that is, forward power minus reflected power. You want N8LP's excellent LP-100A. I had lusted after one for quite a while, and bought W6OSP's unit after he died for about half price. The LP-100A supports two couplers, which can be deployed on the outputs of both transmitters in an SO2R setup, or on input and output of a power amp. The LP-100A measures the complex Z at the coupler, so it can measure the input Z of the amplifier under dynamic conditions. Now that I can measure power more accurately, I am able to run a dB or more closer to legal limit when I want to for contesting. 73, Jim K9YC >>> >>> -- >>> 73, >>> Vic, 4X6GP/K2VCO >>> Rehovot, Israel >>> http://www.qsl.net/k2vco/ >>> __ >>> 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 >>> Message delivered to phys...@mac.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 > Message delivered to wun...@wunderwood.org __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Feature wanted for W2 wattmeter
You are implying that I can arbitrarily increase my power output by detuning my antenna! You are right that reflected power is re-reflected by the source, but there is a sense in which the 'real' power output in my example is 1 kW. Vic K2VCO /4X6GP > On Jan 13, 2015, at 2:46 AM, Phil & Debbie Salas wrote: > > "I would like the W2 wattmeter to be able to display "delivered" power, that > is, forward power minus reflected power. This would give a more accurate > indication of power going to an antenna when the SWR is not 1:1. For > example, if the SWR on the line is about 2.5 and forward power indicates 1.2 > kW, there is about 200 watts reflected power. In that case only about 1 kW > (less line losses, of course) is being delivered to the load. It is > misleading to look at just forward power." > > Actually, "delivered power" is pretty much what you are measuring. Remember > that reflected power is re-reflected by the source and adds back into the > forward power. So in your example, you are transmitting 1200 watts, having > 200 watts reflected, then the 200 watts is re-reflected by the source giving > you the 1200 watts. Of course, there will be transmission line SWR-related > losses. > > Phil - AD5X > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to k2vco@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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Feature wanted for W2 wattmeter
I'm talking about forward minus reflected power. If you neglect losses, that is how much power gets to the antenna to be radiated. A wattmeter that measures forward power will be misleading if the SWR is high. My antenna has an SWR of about 2.5:1 on 40 m. When the transmitter delivers 100 watts to the line, there is about 120 watts forward and 20 watts reflected. I want a mode in which the wattmeter reads 100 watts in this situation. Maybe 'delivered' is a bad choice of word. I mean something like 'power delivered by the transmitter'. Obviously it would take magic to know how much power gets to the antenna after losses! Vic K2VCO /4X6GP > On Jan 13, 2015, at 12:08 AM, Phil Hystad wrote: > > Vic, > > What do you mean by "delivered power"? I presume you mean delivered to the > antenna (aka antenna system) but are you thinking power input to the W2 minus > all the losses. By all losses I mean all losses on transmission line due to > just plane old cable loss and higher losses due to higher SWR plus any loss > in tuner or other devices between W2 and the aether. > > Because, due to conservation of energy, that RF energy either goes out into > Electromagnetic waves (radiated) or it ends up as heat-loss somewhere in the > system. > > And, given all that, I don't think any RF/SWR power meter on the market can > measure "delivered power". > > Or, are you talking about something else. > > 73, phil, K7PEH > > >> On Jan 12, 2015, at 11:31 AM, Vic Rosenthal 4X6GP/K2VCO >> wrote: >> >> I definitely want an LP100A, but I HAVE a W2, and while it is not as >> accurate, I still would like to see the delivered power! >> >>> On 12 Jan 2015 21:12, Jim Brown wrote: On Mon,1/12/2015 7:56 AM, Vic Rosenthal 4X6GP/K2VCO wrote: I would like the W2 wattmeter to be able to display "delivered" power, that is, forward power minus reflected power. >>> >>> You want N8LP's excellent LP-100A. I had lusted after one for quite a >>> while, and bought W6OSP's unit after he died for about half price. The >>> LP-100A supports two couplers, which can be deployed on the outputs of >>> both transmitters in an SO2R setup, or on input and output of a power >>> amp. The LP-100A measures the complex Z at the coupler, so it can >>> measure the input Z of the amplifier under dynamic conditions. >>> >>> Now that I can measure power more accurately, I am able to run a dB or >>> more closer to legal limit when I want to for contesting. >>> >>> 73, Jim K9YC >> >> -- >> 73, >> Vic, 4X6GP/K2VCO >> Rehovot, Israel >> http://www.qsl.net/k2vco/ >> __ >> 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 >> Message delivered to phys...@mac.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] K-3
Do pay attention to the ESD precautions. An short version is in the K3 manual on page 77 where it describes how to install filters. You can download the manual from the Elecraft web site. 73 Bill AE6JV On 1/13/15 at 5:19 PM, elecraft@mailman.qth.net (Bob Gibson via Elecraft) wrote: HI All..I just bought a used K-3, I wanted to install the antenna tuner and 2.8 SSB filter as well as the 6 KC SSB filter.. I have never looked inside the K-3 so..is this going to be a hard job to do?Bob W5RG Almost 60 years in Ham Radio --- Bill Frantz| "I wish there was a knob on the TV to turn up the 408-356-8506 | intelligence. There's a knob called "brightness", but www.pwpconsult.com | it doesn't work. -- Gallagher __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] K-3
__ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] K-3
Bob, The KAT3 should be no problem to install, just follow the instructions. For the filter change/addition, again follow the instructions. If there is no KRX3 option installed, it is simply a matter of removing the top and bottom covers, but if the KRX3 is installed, it must be removed to gain access to the filter slots on the main RF board - not difficult, but it takes a bit longer to remove the KRX3. 73, Don W3FPR On 1/12/2015 8:19 PM, Bob Gibson via Elecraft wrote: HI All..I just bought a used K-3, I wanted to install the antenna tuner and 2.8 SSB filter as well as the 6 KC SSB filter.. I have never looked inside the K-3 so..is this going to be a hard job to do?Bob W5RG Almost 60 years in Ham Radio __ 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 Message delivered to arch...@mail-archive.com
[Elecraft] K-3
The best part of elecraft radio is that a proper built kit is 100% the same as an assembled version. 73 Johnny VR2XMC 寄件人︰ Michael Murphy 收件人︰ Bob Gibson 副本(CC)︰ "elecraft@mailman.qth.net" 傳送日期︰ 2015年01月13日 (週二) 9:37 AM 主題︰ Re: [Elecraft] K-3 Bob, I just built my K3 2 weeks ago (and a P3 last Friday night). The K3 took about 10 hours to build. Elecraft provides very good step by step instructions. Spend some time reading over them and then get started. Take your time and you will be fine. You will love the K3. I spent all day Saturday using mine in the NAQP CW contest. It is an excellent rig, certainly the best I have ever owned. Good luck! On Mon, Jan 12, 2015 at 8:19 PM, Bob Gibson via Elecraft < elecraft@mailman.qth.net> wrote: > HI All..I just bought a used K-3, I wanted to install the antenna tuner > and 2.8 SSB filter as well as the 6 KC SSB filter.. I have never looked > inside the K-3 so..is this going to be a hard job to do?Bob W5RG Almost 60 > years in Ham Radio > __ > 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 > Message delivered to m...@ki8r.com -- --- Michael Murphy - KI8R m...@ki8r.com twitter.com/ki8r www.ki8r.com 614-371-8265 (cell) 4SQRP #388 QRPARCI #14941 NAQCC #6432 FLYING PIGS #3100 KX3 #3254 --- __ 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 Message delivered to vr2...@yahoo.com.hk __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] K-3
Bob, I just built my K3 2 weeks ago (and a P3 last Friday night). The K3 took about 10 hours to build. Elecraft provides very good step by step instructions. Spend some time reading over them and then get started. Take your time and you will be fine. You will love the K3. I spent all day Saturday using mine in the NAQP CW contest. It is an excellent rig, certainly the best I have ever owned. Good luck! On Mon, Jan 12, 2015 at 8:19 PM, Bob Gibson via Elecraft < elecraft@mailman.qth.net> wrote: > HI All..I just bought a used K-3, I wanted to install the antenna tuner > and 2.8 SSB filter as well as the 6 KC SSB filter.. I have never looked > inside the K-3 so..is this going to be a hard job to do?Bob W5RG Almost 60 > years in Ham Radio > __ > 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 > Message delivered to m...@ki8r.com -- --- Michael Murphy - KI8R m...@ki8r.com twitter.com/ki8r www.ki8r.com 614-371-8265 (cell) 4SQRP #388 QRPARCI #14941 NAQCC #6432 FLYING PIGS #3100 KX3 #3254 --- __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] New stuff at Dayton?
K4! -- Thanks and 73's, For equipment, and software setups and reviews see: www.nk7z.net for MixW support see; http://groups.yahoo.com/neo/groups/mixw/info for Dopplergram information see: http://groups.yahoo.com/neo/groups/dopplergram/info for MM-SSTV see: http://groups.yahoo.com/neo/groups/MM-SSTV/info On Mon, 2015-01-12 at 17:56 -0500, Jim Miller wrote: > OK, anyone have any ideas of anything new to be shown by Elecraft at Dayton? __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] K-3
Just follow the documentation for installing the antenna tuner. Filters are a piece of cake to install -- well, as long as the sub-RX is not in the K3, I don't have a sub receiver in mine so I can't comment too much on if it is hard to do. The documentation for doing the installation of various option boards is very clear on what needs to be done. 73, phil, K7PEH > On Jan 12, 2015, at 5:19 PM, Bob Gibson via Elecraft > wrote: > > HI All..I just bought a used K-3, I wanted to install the antenna tuner and > 2.8 SSB filter as well as the 6 KC SSB filter.. I have never looked inside > the K-3 so..is this going to be a hard job to do?Bob W5RG Almost 60 years in > Ham Radio > __ > 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 > Message delivered to phys...@mac.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 Message delivered to arch...@mail-archive.com
[Elecraft] K-3
HI All..I just bought a used K-3, I wanted to install the antenna tuner and 2.8 SSB filter as well as the 6 KC SSB filter.. I have never looked inside the K-3 so..is this going to be a hard job to do?Bob W5RG Almost 60 years in Ham Radio __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Feature wanted for W2 wattmeter
Well ... sort of. Some of the reflected power heats up the ATU and/or PA depending on the match it sees [actually, some of the forward power does too, tuners have forward losses]. "Delivered Power" is somewhat difficult to calculate. Working into a matched, non-reactive load [common for AM broadcast, at least a number of years ago], it's "I squared R" where R is the radiation resistance of the antenna ... and some minor conductor losses in the antenna. Things get pretty sticky if it's not a matched load. 73, Fred K6DGW - Northern California Contest Club - CU in the 50th Running of the Cal QSO Party 3-4 Oct 2015 - www.cqp.org On 1/12/2015 4:46 PM, Phil & Debbie Salas wrote: Actually, "delivered power" is pretty much what you are measuring. Remember that reflected power is re-reflected by the source and adds back into the forward power. So in your example, you are transmitting 1200 watts, having 200 watts reflected, then the 200 watts is re-reflected by the source giving you the 1200 watts. Of course, there will be transmission line SWR-related losses. __ 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 Message delivered to arch...@mail-archive.com
[Elecraft] Kx3 remote use via Internet
Hello all, Anyone have any luck in this regard? I have recently picked up a Pigremote which I am getting going on the network, and soon over the Internet, but wondered if anyone used rumlog via the Internet---especially on cw. At the moment I can not seem to get it to recognize the Pigremote ... Any thoughts appreciated or your general experience using the kx3 on cw over a network... With kind regards Scott. Va3ied Sent from my iPad __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Feature wanted for W2 wattmeter
"I would like the W2 wattmeter to be able to display "delivered" power, that is, forward power minus reflected power. This would give a more accurate indication of power going to an antenna when the SWR is not 1:1. For example, if the SWR on the line is about 2.5 and forward power indicates 1.2 kW, there is about 200 watts reflected power. In that case only about 1 kW (less line losses, of course) is being delivered to the load. It is misleading to look at just forward power." Actually, "delivered power" is pretty much what you are measuring. Remember that reflected power is re-reflected by the source and adds back into the forward power. So in your example, you are transmitting 1200 watts, having 200 watts reflected, then the 200 watts is re-reflected by the source giving you the 1200 watts. Of course, there will be transmission line SWR-related losses. Phil - AD5X __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KXPD3 and KX3 questions related to learning CW
Thanks to everyone for the information and tips. I'll definitely use the KX3 utility when I'm at home. An option for always displaying the decoded text rather than switching back to VFO B frequency would be nice for practice when a computer is not available. Thanks, phil K4PMI -- View this message in context: http://elecraft.365791.n2.nabble.com/KXPD3-and-KX3-questions-related-to-learning-CW-tp7596989p7597018.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 Message delivered to arch...@mail-archive.com
[Elecraft] New stuff at Dayton?
OK, anyone have any ideas of anything new to be shown by Elecraft at Dayton? Perhaps the sensor for the P3? 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Feature wanted for W2 wattmeter
Vic, What do you mean by "delivered power"? I presume you mean delivered to the antenna (aka antenna system) but are you thinking power input to the W2 minus all the losses. By all losses I mean all losses on transmission line due to just plane old cable loss and higher losses due to higher SWR plus any loss in tuner or other devices between W2 and the aether. Because, due to conservation of energy, that RF energy either goes out into Electromagnetic waves (radiated) or it ends up as heat-loss somewhere in the system. And, given all that, I don't think any RF/SWR power meter on the market can measure "delivered power". Or, are you talking about something else. 73, phil, K7PEH > On Jan 12, 2015, at 11:31 AM, Vic Rosenthal 4X6GP/K2VCO > wrote: > > I definitely want an LP100A, but I HAVE a W2, and while it is not as > accurate, I still would like to see the delivered power! > > On 12 Jan 2015 21:12, Jim Brown wrote: >> On Mon,1/12/2015 7:56 AM, Vic Rosenthal 4X6GP/K2VCO wrote: >>> I would like the W2 wattmeter to be able to display "delivered" power, >>> that is, forward power minus reflected power. >> >> You want N8LP's excellent LP-100A. I had lusted after one for quite a >> while, and bought W6OSP's unit after he died for about half price. The >> LP-100A supports two couplers, which can be deployed on the outputs of >> both transmitters in an SO2R setup, or on input and output of a power >> amp. The LP-100A measures the complex Z at the coupler, so it can >> measure the input Z of the amplifier under dynamic conditions. >> >> Now that I can measure power more accurately, I am able to run a dB or >> more closer to legal limit when I want to for contesting. >> >> 73, Jim K9YC > > -- > 73, > Vic, 4X6GP/K2VCO > Rehovot, Israel > http://www.qsl.net/k2vco/ > __ > 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 > Message delivered to phys...@mac.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Feature wanted for W2 wattmeter
I definitely want an LP100A, but I HAVE a W2, and while it is not as accurate, I still would like to see the delivered power! On 12 Jan 2015 21:12, Jim Brown wrote: On Mon,1/12/2015 7:56 AM, Vic Rosenthal 4X6GP/K2VCO wrote: I would like the W2 wattmeter to be able to display "delivered" power, that is, forward power minus reflected power. You want N8LP's excellent LP-100A. I had lusted after one for quite a while, and bought W6OSP's unit after he died for about half price. The LP-100A supports two couplers, which can be deployed on the outputs of both transmitters in an SO2R setup, or on input and output of a power amp. The LP-100A measures the complex Z at the coupler, so it can measure the input Z of the amplifier under dynamic conditions. Now that I can measure power more accurately, I am able to run a dB or more closer to legal limit when I want to for contesting. 73, Jim K9YC -- 73, Vic, 4X6GP/K2VCO Rehovot, Israel http://www.qsl.net/k2vco/ __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Feature wanted for W2 wattmeter
On Mon,1/12/2015 7:56 AM, Vic Rosenthal 4X6GP/K2VCO wrote: I would like the W2 wattmeter to be able to display "delivered" power, that is, forward power minus reflected power. You want N8LP's excellent LP-100A. I had lusted after one for quite a while, and bought W6OSP's unit after he died for about half price. The LP-100A supports two couplers, which can be deployed on the outputs of both transmitters in an SO2R setup, or on input and output of a power amp. The LP-100A measures the complex Z at the coupler, so it can measure the input Z of the amplifier under dynamic conditions. Now that I can measure power more accurately, I am able to run a dB or more closer to legal limit when I want to for contesting. 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] K1 ?
"Other than they both fit into the same space and for that reason cannot be both present at the same time": Always these troublesome minor details, Don :-) I suspect that if a 6-band K1 (say, with external ATU like the T1) had been doable, Wayne would have done it! 73, Phil W7OX On 1/12/15 10:29 AM, Don Wilhelm wrote: Dale, Other than they both fit into the same space and for that reason cannot be both present at the same time - there is no problem. The offsets are remembered for all 6 bands. So if you replace the 4 band board with the 2 band board, all you need to do is set the menu b1 parameter to 3.5 and the b2 parameter to 21.0 and you will be ready to operate. 73, Don W3FPR On 1/12/2015 1:06 PM, Dale Putnam wrote: Is there any reason why, a 2 band module for the K1, couldn't be made for 80/15? And installed with a 4 band (40-30-20-17)? Thank you! __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] K1 ?
Dale, Other than they both fit into the same space and for that reason cannot be both present at the same time - there is no problem. The offsets are remembered for all 6 bands. So if you replace the 4 band board with the 2 band board, all you need to do is set the menu b1 parameter to 3.5 and the b2 parameter to 21.0 and you will be ready to operate. 73, Don W3FPR On 1/12/2015 1:06 PM, Dale Putnam wrote: Is there any reason why, a 2 band module for the K1, couldn't be made for 80/15? And installed with a 4 band (40-30-20-17)? Thank you! __ 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 Message delivered to arch...@mail-archive.com
[Elecraft] K1 ?
Is there any reason why, a 2 band module for the K1, couldn't be made for 80/15? And installed with a 4 band (40-30-20-17)? Thank you! Have a great day, --... ...-- Dale - WC7S in Wy __ 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 Message delivered to arch...@mail-archive.com
[Elecraft] KX3 - Hi Sig warning
Bit of a weird effect found here. I am using an external 2m transverter to 28MHz. I noticed that when switching between VFOs using the A/B switch from (eg) 145.7875FM to 144.430 usb, the KX3 says “Hi Sig” and disconnects the preamp. This still happens with nothing connected to the KX3's antenna socket. It also happens on 50MHz and 21MHz – I haven't checked all the bands. I found the VFO with FM mode has to be 120kHz or more above or below the freq of the VFO in USB mode. It only happens on the transition from FM to USB, it doesn't happen for FM to other modes. And it doesn't happen on the transition from USB to FM. As I say, weird. Graham __ 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 Message delivered to arch...@mail-archive.com
[Elecraft] Feature wanted for W2 wattmeter
I would like the W2 wattmeter to be able to display "delivered" power, that is, forward power minus reflected power. This would give a more accurate indication of power going to an antenna when the SWR is not 1:1. For example, if the SWR on the line is about 2.5 and forward power indicates 1.2 kW, there is about 200 watts reflected power. In that case only about 1 kW (less line losses, of course) is being delivered to the load. It is misleading to look at just forward power. I know that many people think it's simpler to make the antenna impedance 50 ohms, but that's not always possible. With the W2's Windows application you can see both forward and reflected power and subtract. But I would like the LEDs on the W2 to be able to show the delivered power. Some high-end wattmeters like the Alpha 4510 can do this. It's a SMOP, so why not? -- 73, Vic, 4X6GP/K2VCO Rehovot, Israel http://www.qsl.net/k2vco/ __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Nifty KX3 rack thingy...
That's a first for me. Been a ham for 53 years, buying, selling and trading gear. First time I've ever seen someone request a Starbuck's Gift Card to cover payment for anything! ;o) Very creative, Phil. Terry, W0FM -Original Message- From: Phil Hystad [mailto:phys...@mac.com] Sent: Sunday, January 11, 2015 7:33 PM To: elecraft Subject: [Elecraft] Nifty KX3 rack thingy... For payment, I will accept a Starbuck’s Coffee giftcard loaded with the whole number dollars of shipping cost. Thus, if shipping is $9.62, I will take a gift card with $9 on it. 73, phil, K7PEH __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Interesting link for K3
Hi Dave, Even though it is in the manual I'm glad you posted the video. I had forgotten the existence of Norm 1 and Norm 2 and the refresher was beneficial to me. I normalize lots of times and 400Hz is never what I want. I've now created Norm 1 to suit my preferred CW bandwidth. Sometimes a "feature" refresher is just what the doctor ordered. 73, Mike K2MK David Cole wrote > Hi, > Not sure how many know this, but there is a way to preset your Filters > for Normalization... > > See: > http://youtu.be/_1DnLQVaoYg > -- > Thanks and 73's, > For equipment, and software setups and reviews see: > www.nk7z.net -- View this message in context: http://elecraft.365791.n2.nabble.com/Interesting-link-for-K3-tp7597003p7597007.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 Message delivered to arch...@mail-archive.com
