Re: [Elecraft] P3 Feature Request - Transmit sampling
This moving to OT but interesting to a long-term JT65 user like me. JT65 was designed for weak-signal communication, so the situations on HF where strong signals are received might be a problem. I would like to hear what Joe Taylor (K1JT) would say regarding this. I have not used JT9 or many of the variants of JT65; no use of it on HF. So have no experience with strong JT signals. On eme a strong signal is -15 or higher. You may be correct about JT9 coding. With the K3 or KX3 the important point is to set up modulation the proper way using the ALC meter (four dashes with the fifth flickering). I really like the way Elecraft makes it simple to set up digital mode levels correctly and easily. Previous use of JT44 and then JT65 was with a FT-847 and one had to just find the point where level started compression and back of a tad. The DATA jack on the FT-847 was nice since Rx audio was low-level at constant amplitude and modulation was separated from the mic. But I think one still had to adjust mic gain and turn off mic compression for data modes (Not a preset mode like on Elecraft radios). 73, Ed - KL7UW --- From: Sverre Holm (LA3ZA) la...@nrrl.no To: elecraft@mailman.qth.net Subject: Re: [Elecraft] P3 Feature Request - Transmit sampling Message-ID: 1380125612061-7579228.p...@n2.nabble.com Content-Type: text/plain; charset=us-ascii As your post indicates, the splattering of JT65 signals has most likely nothing to do with your transmitter and setup. It is more likely to be due to the specifics of the JT65 display/decoding algorithm than anything else. I have done spectral estimation for some 30+ years and it reminds me very much of the phenomenon called sidelobe leakage. I have commented on that in my blog: Overmodulated JT65 on HF? http://la3za.blogspot.no/2013/04/overmodulated-jt65-on-hf.html WB4SON wrote Yesterday I received an email from a ham a few thousand miles away asking me to clean up my signal -- I was running JT65 at the time, and he saw my signal decode on his rig in a half-dozen spots across the waterfall. Later that night a nearby ham was nice enough to run a spectral analysis on my signal and found it looked clean as well. 73, Ed - KL7UW http://www.kl7uw.com dubus...@gmail.com Kits made by 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
[Elecraft] P3 Feature Request - Transmit sampling
If this feature is offered in the near future, it would be nice if the following features were incorporated into the making the P3 a very useful station tool. 1. Since the Dynamic range is rather limited on the P3, the ability or feature to allow 1 or 2 crystal notch filters to be inserted inline would be a nice feature. This would allow the dynamic range of the P3 to be increased to something well over 100db with the main TX signal notched. We would only a need a low frequency, mid and high frequency notches for dummy load testing. 2. The ability to define a IMD mask would be a nice feature. Rather than trying to squint at peak makers it would be much easier to set a fail alarm mask that alerts the operator to the fact that his or her's knobs to the right habit is causing problems up the band. 3. Multiple peak markers and a rifle scope type cross hair makers for making accurate and fast level measurements. Pre-set bounce peak level markers every 5 khz would be a nice feature. 4. Have multiple traces such as peak hold, quasi peak, average power, average power in a 2.4khz bandwidth, and peak power in a 2.4khz bandwidth These kinds of measurements would reflect the level of interference as seen on the typical S_meter rather than being a narrow resolution bandwidth measurement. 5. If you are doing transmitter sampling you might as well go all the way and offer the ability to use any directional coupler with the P3 with appropriate calibration routines. Similar to the http://www.meterbuilder.com/ meter. 6. Support software for the G4HFQ polar plotting software. http://www.g4hfq.co.uk/plphelp/plphelp.htm 7. While they at it a white noise generator plus a 2 tone or multitone generator can also be a option for TX testing. 8. Define a set bandwidth such as 20khz for TX monitoring that can be stored to one of the P3's function keys ALT would switch the waterfall display to the 20khz bandwidth and the averaging on the waterfall should indicate IMD level peaks averaged in a 2.4khz bandwidth. Its a complicated matter turning the P3 into a spectrum analyzer/station monitor once you start thinking about it from the perspective of a test engineer. It might be easier to do this on a DDC/DUC platform! That should round the P3 off very nicely if all these features are achievable. Only the firmware guru's will know if these features are possible. Keep on dreaming. 73 Craig __ 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 Feature Request - Transmit sampling
Out of any real estate optimization and the money needed to buy it, this link may show a needed parent to what we are asking for. http://www.telepostinc.com/LP-500.html When delivered, it would have the requested features and even more. Isn't it? 73 de iw1ayd Salvo PS this remember me that there, several years ago, in a link to another site I have seen something much like the P3 ... just mumbling. __ 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 Feature Request - Transmit sampling
I am really hoping the Sensor port will be used for this! (Soon?) kc2vmp On Sep 24, 2013, at 10:09 AM, Bob wb4...@gmail.com wrote: So I've been loving my P3 for about 2 years now, and I keep looking at that lonely sensor window in the back, dreaming and wishing Yesterday I received an email from a ham a few thousand miles away asking me to clean up my signal -- I was running JT65 at the time, and he saw my signal decode on his rig in a half-dozen spots across the waterfall. I panicked, of course, and immediately checked everything -- Line Level was four bars steady with an occasional fifth bar flickering, transmit power was 5.0 watts, monitor was sounding perfectly fine, and my handheld receiver was sounding OK too. Later that night a nearby ham was nice enough to run a spectral analysis on my signal and found it looked clean as well. Imagine how easy it would be for me to verify my outbound signal quality if my P3 had an outboard RF sampling tap that communicated via IR back to the P3 and allows the outbound RF to be displayed. One can dream and wish. 73, Bob, WB4SON __ 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] P3 Feature Request - Transmit sampling
As your post indicates, the splattering of JT65 signals has most likely nothing to do with your transmitter and setup. It is more likely to be due to the specifics of the JT65 display/decoding algorithm than anything else. I have done spectral estimation for some 30+ years and it reminds me very much of the phenomenon called sidelobe leakage. I have commented on that in my blog: Overmodulated JT65 on HF? http://la3za.blogspot.no/2013/04/overmodulated-jt65-on-hf.html WB4SON wrote Yesterday I received an email from a ham a few thousand miles away asking me to clean up my signal -- I was running JT65 at the time, and he saw my signal decode on his rig in a half-dozen spots across the waterfall. Later that night a nearby ham was nice enough to run a spectral analysis on my signal and found it looked clean as well. - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/P3-Feature-Request-Transmit-sampling-tp7579177p7579228.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] P3 Feature Request - Transmit sampling
If your neighbor tells you it's clean (and s/he knows how to look) then it's likely the other station at fault. Noise blanking, noise reduction, poor RX audio (over)driving are huge issues that can make any reception look bad. Bottom line: don't sweat it if your local stations tell you you're clean. whiners /dev/null 73, Rick wa6nhc Tiny iPhone 5 keypad, typos are inevitable On Sep 25, 2013, at 9:13 AM, Sverre Holm (LA3ZA) la...@nrrl.no wrote: As your post indicates, the splattering of JT65 signals has most likely nothing to do with your transmitter and setup. It is more likely to be due to the specifics of the JT65 display/decoding algorithm than anything else. I have done spectral estimation for some 30+ years and it reminds me very much of the phenomenon called sidelobe leakage. I have commented on that in my blog: Overmodulated JT65 on HF? http://la3za.blogspot.no/2013/04/overmodulated-jt65-on-hf.html WB4SON wrote Yesterday I received an email from a ham a few thousand miles away asking me to clean up my signal -- I was running JT65 at the time, and he saw my signal decode on his rig in a half-dozen spots across the waterfall. Later that night a nearby ham was nice enough to run a spectral analysis on my signal and found it looked clean as well. - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/P3-Feature-Request-Transmit-sampling-tp7579177p7579228.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] P3 Feature Request - Transmit sampling
FWIW, overload from a strong local signal can cause much weaker signals to behave this way. Once amplifier stages in a receiver are driven into overload, they produce all sorts of mixing products with any signal coming through. The overloading signal may have been far off frequency, even on another Ham band, so it was not obvious to the operator. 73, Ron AC7AC -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of kc2vmp Sent: Wednesday, September 25, 2013 8:34 AM To: Bob Cc: Elecraft Subject: Re: [Elecraft] P3 Feature Request - Transmit sampling I am really hoping the Sensor port will be used for this! (Soon?) kc2vmp On Sep 24, 2013, at 10:09 AM, Bob wb4...@gmail.com wrote: So I've been loving my P3 for about 2 years now, and I keep looking at that lonely sensor window in the back, dreaming and wishing Yesterday I received an email from a ham a few thousand miles away asking me to clean up my signal -- I was running JT65 at the time, and he saw my signal decode on his rig in a half-dozen spots across the waterfall. I panicked, of course, and immediately checked everything -- Line Level was four bars steady with an occasional fifth bar flickering, transmit power was 5.0 watts, monitor was sounding perfectly fine, and my handheld receiver was sounding OK too. Later that night a nearby ham was nice enough to run a spectral analysis on my signal and found it looked clean as well. Imagine how easy it would be for me to verify my outbound signal quality if my P3 had an outboard RF sampling tap that communicated via IR back to the P3 and allows the outbound RF to be displayed. One can dream and wish. 73, Bob, WB4SON __ 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] P3 Feature Request - Transmit sampling
This is good to know. I had this same experience on PSK31, and it was trouble at the receiving end because it was happening on other signals as well, while other stations gave me a clean bill of health. I didn't know if it was his soundcard, software, or interface. Dick, n0ce - Original Message - From: Ron D'Eau Claire r...@cobi.biz To: Bob wb4...@gmail.com Cc: Elecraft Elecraft@mailman.qth.net Sent: Wednesday, September 25, 2013 11:31:25 AM Subject: Re: [Elecraft] P3 Feature Request - Transmit sampling FWIW, overload from a strong local signal can cause much weaker signals to behave this way. Once amplifier stages in a receiver are driven into overload, they produce all sorts of mixing products with any signal coming through. The overloading signal may have been far off frequency, even on another Ham band, so it was not obvious to the operator. 73, Ron AC7AC -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of kc2vmp Sent: Wednesday, September 25, 2013 8:34 AM To: Bob Cc: Elecraft Subject: Re: [Elecraft] P3 Feature Request - Transmit sampling I am really hoping the Sensor port will be used for this! (Soon?) kc2vmp On Sep 24, 2013, at 10:09 AM, Bob wb4...@gmail.com wrote: So I've been loving my P3 for about 2 years now, and I keep looking at that lonely sensor window in the back, dreaming and wishing Yesterday I received an email from a ham a few thousand miles away asking me to clean up my signal -- I was running JT65 at the time, and he saw my signal decode on his rig in a half-dozen spots across the waterfall. I panicked, of course, and immediately checked everything -- Line Level was four bars steady with an occasional fifth bar flickering, transmit power was 5.0 watts, monitor was sounding perfectly fine, and my handheld receiver was sounding OK too. Later that night a nearby ham was nice enough to run a spectral analysis on my signal and found it looked clean as well. Imagine how easy it would be for me to verify my outbound signal quality if my P3 had an outboard RF sampling tap that communicated via IR back to the P3 and allows the outbound RF to be displayed. One can dream and wish. 73, Bob, WB4SON __ 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
Re: [Elecraft] P3 Feature Request - Transmit sampling
That clears up something that has bothered me on JT65. Many times someone will complain about someone overdriving, but the signal appeared to be OK to me. It happens frequently. Now I think the complainer is probably receiving the station much more strongly than I am and it is overdriving his JT65 software. The signal is weaker for me and my software is not being overdriven. The transmitted signal is indeed clean. Thanks for the insight. Eric KE6US On 9/25/2013 9:13 AM, Sverre Holm (LA3ZA) wrote: As your post indicates, the splattering of JT65 signals has most likely nothing to do with your transmitter and setup. It is more likely to be due to the specifics of the JT65 display/decoding algorithm than anything else. I have done spectral estimation for some 30+ years and it reminds me very much of the phenomenon called sidelobe leakage. I have commented on that in my blog: Overmodulated JT65 on HF? http://la3za.blogspot.no/2013/04/overmodulated-jt65-on-hf.html WB4SON wrote Yesterday I received an email from a ham a few thousand miles away asking me to clean up my signal -- I was running JT65 at the time, and he saw my signal decode on his rig in a half-dozen spots across the waterfall. Later that night a nearby ham was nice enough to run a spectral analysis on my signal and found it looked clean as well. - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/P3-Feature-Request-Transmit-sampling-tp7579177p7579228.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] P3 Feature Request - Transmit sampling
Well nothing would put the issue to bed better than a nice printout of a P3 screen that was sampling the RF signal over a bandwidth of about 6KHz. That's why I would LOVE for Elecraft to continue developing the P3 and expanding its capability. I don't mind the report, and I take it seriously, but I'd rather be able to prove to myself that I'm clean rather than have a buddy stay up late at night to run tests on my behalf. And the other thing, of course, is the assumption that the decoding algorithm is perfect and doesn't make mistakes, nor that a 6 KHz wide bandwidth can be decoded with no artifacts on a Flex-3K -- these seem to be suspect to me as well. With so many accusations of bad modulation on what is essentially a weak signal mode during a sun-spot maximum, being able to be 100% sure you are clean seems like a very worthwhile goal. I continue to run 5 watts and enjoy JT65, JT9 and PSK31 very much. 73, Bob, WB4SON On Wed, Sep 25, 2013 at 12:19 PM, Rick Bates happymooseph...@gmail.comwrote: If your neighbor tells you it's clean (and s/he knows how to look) then it's likely the other station at fault. Noise blanking, noise reduction, poor RX audio (over)driving are huge issues that can make any reception look bad. Bottom line: don't sweat it if your local stations tell you you're clean. whiners /dev/null 73, Rick wa6nhc Tiny iPhone 5 keypad, typos are inevitable On Sep 25, 2013, at 9:13 AM, Sverre Holm (LA3ZA) la...@nrrl.no wrote: As your post indicates, the splattering of JT65 signals has most likely nothing to do with your transmitter and setup. It is more likely to be due to the specifics of the JT65 display/decoding algorithm than anything else. I have done spectral estimation for some 30+ years and it reminds me very much of the phenomenon called sidelobe leakage. I have commented on that in my blog: Overmodulated JT65 on HF? http://la3za.blogspot.no/2013/04/overmodulated-jt65-on-hf.html WB4SON wrote Yesterday I received an email from a ham a few thousand miles away asking me to clean up my signal -- I was running JT65 at the time, and he saw my signal decode on his rig in a half-dozen spots across the waterfall. Later that night a nearby ham was nice enough to run a spectral analysis on my signal and found it looked clean as well. - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/P3-Feature-Request-Transmit-sampling-tp7579177p7579228.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 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 Feature Request - Transmit sampling
Yep, that is 100% correct. If the station that is offended would simply reduce their RF gain control, in most cases they will see the signal clean right up. Then the real issue is that they want to copy a weak signal that is in a chunk of spectrum that is full of strong signals (most likely due to excellent propagation). Somehow they think it is their right to complain to folks to lower their power. Imagine doing that in a contest!! (Hey Mr Strong station, I can work that weak guy 100 Hz away from you. Would you please lower your power? -- not that we might not wish it, but we would never say it over the air) So I try to avoid the flak by running 5 watts and making sure my signal is clean. A P3 that RF sampled would take care of the second part. But even 5 watts can be too much -- I worked Australia on 30 meters with 0.5 watts and received a signal report of -10. That wasn't me, that was all propagation. 73, Bob, WB4SON __ 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 Feature Request - Transmit sampling
My normal technique with sound card modes (mostly PSK31) is to look at the audio AtoD overload indicator in my software and reduce the RF gain so it indicates no overload. This procedure uses the minimum necessary gain through most of the radio/AtoD etc, limiting local distortion products. It works very well. Most of the time I still see band noise on the waterfall, so I'm not missing any weak signals. Sometimes the band noise goes away and I wish I had better dynamic range. Cheers - Bill, AE6JV On 9/25/13 at 10:21 AM, wb4...@gmail.com (Bob) wrote: If the station that is offended would simply reduce their RF gain control, in most cases they will see the signal clean right up. --- 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
[Elecraft] P3 Feature Request - Transmit sampling
So I've been loving my P3 for about 2 years now, and I keep looking at that lonely sensor window in the back, dreaming and wishing Yesterday I received an email from a ham a few thousand miles away asking me to clean up my signal -- I was running JT65 at the time, and he saw my signal decode on his rig in a half-dozen spots across the waterfall. I panicked, of course, and immediately checked everything -- Line Level was four bars steady with an occasional fifth bar flickering, transmit power was 5.0 watts, monitor was sounding perfectly fine, and my handheld receiver was sounding OK too. Later that night a nearby ham was nice enough to run a spectral analysis on my signal and found it looked clean as well. Imagine how easy it would be for me to verify my outbound signal quality if my P3 had an outboard RF sampling tap that communicated via IR back to the P3 and allows the outbound RF to be displayed. One can dream and wish. 73, Bob, WB4SON __ 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 Feature Request - Transmit sampling
Your not alone...:-( On 25 September 2013 00:09, Bob wb4...@gmail.com wrote: So I've been loving my P3 for about 2 years now, and I keep looking at that lonely sensor window in the back, dreaming and wishing Yesterday I received an email from a ham a few thousand miles away asking me to clean up my signal -- I was running JT65 at the time, and he saw my signal decode on his rig in a half-dozen spots across the waterfall. I panicked, of course, and immediately checked everything -- Line Level was four bars steady with an occasional fifth bar flickering, transmit power was 5.0 watts, monitor was sounding perfectly fine, and my handheld receiver was sounding OK too. Later that night a nearby ham was nice enough to run a spectral analysis on my signal and found it looked clean as well. Imagine how easy it would be for me to verify my outbound signal quality if my P3 had an outboard RF sampling tap that communicated via IR back to the P3 and allows the outbound RF to be displayed. One can dream and wish. 73, Bob, WB4SON __ 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 -- *Gary - VK1ZZ Skype: Gary.VK1ZZ http://www.qsl.net/vk1zz Motorhome Portable* *Grumpy's House* *Elecraft K3 KPA500FT KAT500FT** * __ 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 Feature Request - Transmit sampling
On 24/09/2013 15:11, Gary Gregory wrote: Your not alone...:-( +1 This is one of the nicer features of my Flex1500 Stewart/G3YSX __ 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 Feature Request - Transmit sampling
Sam, I still believe in the ol saying...the squeeky wheel get's the oil...so it's good to keep our requests up. 73 On 25 September 2013 01:03, Sam Morgan k5oai@gmail.com wrote: I know we aren't suppose to do the 'me to' kind of posts here and before hundreds of others add theirs and the topic gets canned (again)... as far as I am concerned this is the only remaining 'feature' that ruins an otherwise perfect station combo. perhaps the Flex is worth looking at again if this is never going to be addressed?? On 9/24/2013 9:11 AM, Gary Gregory wrote: Your not alone...:-( On 25 September 2013 00:09, Bob wb4...@gmail.com wrote: So I've been loving my P3 for about 2 years now, and I keep looking at that lonely sensor window in the back, dreaming and wishing Yesterday I received an email from a ham a few thousand miles away asking me to clean up my signal -- I was running JT65 at the time, and he saw my signal decode on his rig in a half-dozen spots across the waterfall. I panicked, of course, and immediately checked everything -- Line Level was four bars steady with an occasional fifth bar flickering, transmit power was 5.0 watts, monitor was sounding perfectly fine, and my handheld receiver was sounding OK too. Later that night a nearby ham was nice enough to run a spectral analysis on my signal and found it looked clean as well. Imagine how easy it would be for me to verify my outbound signal quality if my P3 had an outboard RF sampling tap that communicated via IR back to the P3 and allows the outbound RF to be displayed. One can dream and wish. 73, Bob, WB4SON -- GB 73 K5OAI Sam Morgan __**__**__ Elecraft mailing list Home: http://mailman.qth.net/**mailman/listinfo/elecrafthttp://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.**htmhttp://mailman.qth.net/mmfaq.htm Post: mailto:elecr...@mailman.qth.**net Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html -- *Gary - VK1ZZ Skype: Gary.VK1ZZ http://www.qsl.net/vk1zz Motorhome Portable* *Grumpy's House* *Elecraft K3 KPA500FT KAT500FT** * __ 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 Feature Request - Transmit sampling
Just to add that three others have replied to me (as opposed to the entire group) saying they would like to see this too. I suspect this would be a wildly popular item. I've sort of bought everything Elecraft has to offer. I need a new accessory to continue transferring my money to Eric and Wayne (; Now I love my KX3, and appreciate all the fine improvements, but my K3/P3/KAT500/KPA500 is not feeling the love nearly as much. 73, Bob, WB4SON __ 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 Feature Request - Transmit sampling
Even if they never add the feature, wouldn't it be better to use a device like the Kenwood SM-230 monitor, rather than giving up an excellent XCVR for the sake of monitoring youe signal? Tom N5GE On Tue, 24 Sep 2013 10:03:50 -0500, you wrote: I know we aren't suppose to do the 'me to' kind of posts here and before hundreds of others add theirs and the topic gets canned (again)... as far as I am concerned this is the only remaining 'feature' that ruins an otherwise perfect station combo. perhaps the Flex is worth looking at again if this is never going to be addressed?? On 9/24/2013 9:11 AM, Gary Gregory wrote: Your not alone...:-( On 25 September 2013 00:09, Bob wb4...@gmail.com wrote: So I've been loving my P3 for about 2 years now, and I keep looking at that lonely sensor window in the back, dreaming and wishing Yesterday I received an email from a ham a few thousand miles away asking me to clean up my signal -- I was running JT65 at the time, and he saw my signal decode on his rig in a half-dozen spots across the waterfall. I panicked, of course, and immediately checked everything -- Line Level was four bars steady with an occasional fifth bar flickering, transmit power was 5.0 watts, monitor was sounding perfectly fine, and my handheld receiver was sounding OK too. Later that night a nearby ham was nice enough to run a spectral analysis on my signal and found it looked clean as well. Imagine how easy it would be for me to verify my outbound signal quality if my P3 had an outboard RF sampling tap that communicated via IR back to the P3 and allows the outbound RF to be displayed. One can dream and wish. 73, Bob, WB4SON __ 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 Feature Request - Transmit sampling
I don't have a P3, so my curiosity is only academic. The sampling function being referred to, would bring a low power sample of transmit power to the P3? This does not seem very difficult to roll your own sampler. I gather the P3 has the needed RF ckts to receive RF and demod it, or is that also needed? I use LP-Pan with my K3. The LP-Pan only works in Rx so not really usable for analyzing the K3's own transmissions. It will work to look at the KX3, of course. AFAIK the K3 will not work in duplex mode. I also have a SDR-IQ, which makes a superb spectrum analyzer for freq. up to 30-MHz. The SDR-IQ only needs a small antenna to sniff enough RF to display the spectrum as wide as 190-KHz or down to KHz if looking for IMD. The SDR-IQ can be used as IF Rx for transverters to extend usable frequency higher. I recently used it to analyze Sun noise performance of my dish on 1296-MHz and to measure insertion loss for some coax relays. Not usual for most ham stations, I also have a surplus HP141T with plug-ins for 0-1250 MHz and up to 26 GHz. 73, Ed - KL7UW http://www.kl7uw.com dubus...@gmail.com Kits made by 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] P3 Feature Request - Transmit sampling
Hi Tom, It's become very difficult to locate an SM-230 monitor in the used market and even when you do, they are asking an arm and a leg. I've got a pretty clean one, but I can't find anyone who seems to be able to service the unit. As you state It does do a pretty good job though for monitoring one's transmitted signal and could be an alternative if supply were not the issue. Maybe someone will come up with a simple adjunct 3rd party coupler that can sample the output as well as provide a visual via software, cheaply. Steve - W5JK On Sep 24, 2013, at 10:16 AM, Tom wrote: Even if they never add the feature, wouldn't it be better to use a device like the Kenwood SM-230 monitor, rather than giving up an excellent XCVR for the sake of monitoring youe signal? Tom N5GE __ 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] P3 Feature Request - Transmit sampling
What if one defined the IF of the P3 to be at some PSK frequency and connect a loop of wire to it's RF input? Put the loop on the desk. There might not be enough resolution to clearly see anything but gross PSK signal infidelities. 73 de Brian/K3KO On 9/24/2013 16:40, Edward R Cole wrote: I don't have a P3, so my curiosity is only academic. The sampling function being referred to, would bring a low power sample of transmit power to the P3? This does not seem very difficult to roll your own sampler. I gather the P3 has the needed RF ckts to receive RF and demod it, or is that also needed? I use LP-Pan with my K3. The LP-Pan only works in Rx so not really usable for analyzing the K3's own transmissions. It will work to look at the KX3, of course. AFAIK the K3 will not work in duplex mode. I also have a SDR-IQ, which makes a superb spectrum analyzer for freq. up to 30-MHz. The SDR-IQ only needs a small antenna to sniff enough RF to display the spectrum as wide as 190-KHz or down to KHz if looking for IMD. The SDR-IQ can be used as IF Rx for transverters to extend usable frequency higher. I recently used it to analyze Sun noise performance of my dish on 1296-MHz and to measure insertion loss for some coax relays. Not usual for most ham stations, I also have a surplus HP141T with plug-ins for 0-1250 MHz and up to 26 GHz. 73, Ed - KL7UW http://www.kl7uw.com dubus...@gmail.com Kits made by 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 - No virus found in this message. Checked by AVG - www.avg.com Version: 2012.0.2242 / Virus Database: 3222/6194 - Release Date: 09/24/13 - No virus found in this message. Checked by AVG - www.avg.com Version: 2012.0.2242 / Virus Database: 3222/6194 - Release Date: 09/24/13 __ 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 Feature Request - Transmit sampling
It's become very difficult to locate an SM-230 monitor in the used market and even when you do, they are asking an arm and a leg. I've got a pretty clean one, but I can't find anyone who seems to be able to service the unit. A basic transmit monitor (amplitude domain) is extremely easy to make given an audio scope, gimmick capacitor (a couple turns of wire around the coax), and a small signal diode. I suspect such a device could be done for a buck using a sound card and off the shelf (free) audio scope software. If you're looking for a spectrum analyzer (frequency domain) that's another issue entirely as that requires some form of frequency tracking (local oscillator/mixer) and SDR software. However, since the receiver does not need to be particularly sensitive, one could probably use one of the very inexpensive SDR devices on the market these days as the core of any spectrum monitor. I *hope* that whatever solution Elecraft choose for a potential P3 sensor option it *does not require the SVGA option*. To me the SVGA is redundant (I don't need another display, text decode or another dedicated keyboard) and I would be very disappointed to see that cost be a requirement for either an amplitude or spectrum scope. 73, ... Joe, W4TV On 9/24/2013 1:00 PM, Steven Kline wrote: Hi Tom, It's become very difficult to locate an SM-230 monitor in the used market and even when you do, they are asking an arm and a leg. I've got a pretty clean one, but I can't find anyone who seems to be able to service the unit. As you state It does do a pretty good job though for monitoring one's transmitted signal and could be an alternative if supply were not the issue. Maybe someone will come up with a simple adjunct 3rd party coupler that can sample the output as well as provide a visual via software, cheaply. Steve - W5JK On Sep 24, 2013, at 10:16 AM, Tom wrote: Even if they never add the feature, wouldn't it be better to use a device like the Kenwood SM-230 monitor, rather than giving up an excellent XCVR for the sake of monitoring youe signal? Tom N5GE __ 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] P3 Feature Request - Transmit sampling
Resolution would be the same as on received signals - frequency resolution of span/450 and amplitude range 10 - 80 dB. One gotcha is that the P3 only handles IF's up to 21.7 MHz so presumably there would need to be some hardware to allow up to 54 MHz. I'm also looking forward to a transmit monitoring feature. I hope it will allow viewing the transmitted signal in the time domain, like the traditional old tech monitors, as well as frequency domain. John, KU4AF Pittsboro, NC What if one defined the IF of the P3 to be at some PSK frequency and connect a loop of wire to it's RF input? Put the loop on the desk. There might not be enough resolution to clearly see anything but gross PSK signal infidelities. 73 de Brian/K3KO -- View this message in context: http://elecraft.365791.n2.nabble.com/P3-Feature-Request-Transmit-sampling-tp7579177p7579203.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] P3 Feature Request - Transmit sampling
I would like to state a glitch that happens once in a great while on my P3. It will stay on while transmitting and I see my transmitted signal. If it is a glitch, it must be a SW one because the display hardware is doing its job. Then one would suggest it could be toggled on and off What a wonderful thought hint hint. Mel, K6KBE From: Gary Gregory vk1zzg...@gmail.com To: Sam Morgan k5oai@gmail.com Cc: elecraft@mailman.qth.net elecraft@mailman.qth.net Sent: Tuesday, September 24, 2013 8:06 AM Subject: Re: [Elecraft] P3 Feature Request - Transmit sampling Sam, I still believe in the ol saying...the squeeky wheel get's the oil...so it's good to keep our requests up. 73 On 25 September 2013 01:03, Sam Morgan k5oai@gmail.com wrote: I know we aren't suppose to do the 'me to' kind of posts here and before hundreds of others add theirs and the topic gets canned (again)... as far as I am concerned this is the only remaining 'feature' that ruins an otherwise perfect station combo. perhaps the Flex is worth looking at again if this is never going to be addressed?? On 9/24/2013 9:11 AM, Gary Gregory wrote: Your not alone...:-( On 25 September 2013 00:09, Bob wb4...@gmail.com wrote: So I've been loving my P3 for about 2 years now, and I keep looking at that lonely sensor window in the back, dreaming and wishing Yesterday I received an email from a ham a few thousand miles away asking me to clean up my signal -- I was running JT65 at the time, and he saw my signal decode on his rig in a half-dozen spots across the waterfall. I panicked, of course, and immediately checked everything -- Line Level was four bars steady with an occasional fifth bar flickering, transmit power was 5.0 watts, monitor was sounding perfectly fine, and my handheld receiver was sounding OK too. Later that night a nearby ham was nice enough to run a spectral analysis on my signal and found it looked clean as well. Imagine how easy it would be for me to verify my outbound signal quality if my P3 had an outboard RF sampling tap that communicated via IR back to the P3 and allows the outbound RF to be displayed. One can dream and wish. 73, Bob, WB4SON -- GB 73 K5OAI Sam Morgan __**__**__ Elecraft mailing list Home: http://mailman.qth.net/**mailman/listinfo/elecrafthttp://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.**htmhttp://mailman.qth.net/mmfaq.htm Post: mailto:elecr...@mailman.qth.**net Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html -- *Gary - VK1ZZ Skype: Gary.VK1ZZ http://www.qsl.net/vk1zz Motorhome Portable* *Grumpy's House* *Elecraft K3 KPA500FT KAT500FT** * __ 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] P3 Feature Request - Transmit sampling
If you disconnect the RS232 cable between the P3 and the K3, the P3 display stays on during tx and shows the tx signal. I haven't tried it in digital modes but it certainly works for CW and SSB. It's a good workaround that has been mentioned on this reflector in the past. 73 to all Geoff G3UCK -Original Message- From: Mel Farrer Sent: Tuesday, September 24, 2013 8:49 PM To: Gary Gregory ; Sam Morgan Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] P3 Feature Request - Transmit sampling I would like to state a glitch that happens once in a great while on my P3. It will stay on while transmitting and I see my transmitted signal. If it is a glitch, it must be a SW one because the display hardware is doing its job. Then one would suggest it could be toggled on and off What a wonderful thought hint hint. Mel, K6KBE From: Gary Gregory vk1zzg...@gmail.com To: Sam Morgan k5oai@gmail.com Cc: elecraft@mailman.qth.net elecraft@mailman.qth.net Sent: Tuesday, September 24, 2013 8:06 AM Subject: Re: [Elecraft] P3 Feature Request - Transmit sampling Sam, I still believe in the ol saying...the squeeky wheel get's the oil...so it's good to keep our requests up. 73 On 25 September 2013 01:03, Sam Morgan k5oai@gmail.com wrote: I know we aren't suppose to do the 'me to' kind of posts here and before hundreds of others add theirs and the topic gets canned (again)... as far as I am concerned this is the only remaining 'feature' that ruins an otherwise perfect station combo. perhaps the Flex is worth looking at again if this is never going to be addressed?? On 9/24/2013 9:11 AM, Gary Gregory wrote: Your not alone...:-( On 25 September 2013 00:09, Bob wb4...@gmail.com wrote: So I've been loving my P3 for about 2 years now, and I keep looking at that lonely sensor window in the back, dreaming and wishing Yesterday I received an email from a ham a few thousand miles away asking me to clean up my signal -- I was running JT65 at the time, and he saw my signal decode on his rig in a half-dozen spots across the waterfall. I panicked, of course, and immediately checked everything -- Line Level was four bars steady with an occasional fifth bar flickering, transmit power was 5.0 watts, monitor was sounding perfectly fine, and my handheld receiver was sounding OK too. Later that night a nearby ham was nice enough to run a spectral analysis on my signal and found it looked clean as well. Imagine how easy it would be for me to verify my outbound signal quality if my P3 had an outboard RF sampling tap that communicated via IR back to the P3 and allows the outbound RF to be displayed. One can dream and wish. 73, Bob, WB4SON -- GB 73 K5OAI Sam Morgan __**__**__ Elecraft mailing list Home: http://mailman.qth.net/**mailman/listinfo/elecrafthttp://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.**htmhttp://mailman.qth.net/mmfaq.htm Post: mailto:elecr...@mailman.qth.**net Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html -- *Gary - VK1ZZ Skype: Gary.VK1ZZ http://www.qsl.net/vk1zz Motorhome Portable* *Grumpy's House* *Elecraft K3 KPA500FT KAT500FT** * __ 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] P3 Feature Request - Transmit sampling
On 9/24/2013 4:44 PM, Geoffrey Downs wrote: If you disconnect the RS232 cable between the P3 and the K3, the P3 display stays on during tx and shows the tx signal. However, when you do this you are seeing the 8 MHz *IF* signal. You are not seeing the effect of the final mixer, low power amplifier or 100W amplifier if installed. This kludge shows only the effect of the DSP modulation process - compression and EQ - and does not always represent the goodness of the final transmitted signal. 73, ... Joe, W4TV On 9/24/2013 4:44 PM, Geoffrey Downs wrote: If you disconnect the RS232 cable between the P3 and the K3, the P3 display stays on during tx and shows the tx signal. I haven't tried it in digital modes but it certainly works for CW and SSB. It's a good workaround that has been mentioned on this reflector in the past. 73 to all Geoff G3UCK -Original Message- From: Mel Farrer Sent: Tuesday, September 24, 2013 8:49 PM To: Gary Gregory ; Sam Morgan Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] P3 Feature Request - Transmit sampling I would like to state a glitch that happens once in a great while on my P3. It will stay on while transmitting and I see my transmitted signal. If it is a glitch, it must be a SW one because the display hardware is doing its job. Then one would suggest it could be toggled on and off What a wonderful thought hint hint. Mel, K6KBE From: Gary Gregory vk1zzg...@gmail.com To: Sam Morgan k5oai@gmail.com Cc: elecraft@mailman.qth.net elecraft@mailman.qth.net Sent: Tuesday, September 24, 2013 8:06 AM Subject: Re: [Elecraft] P3 Feature Request - Transmit sampling Sam, I still believe in the ol saying...the squeeky wheel get's the oil...so it's good to keep our requests up. 73 On 25 September 2013 01:03, Sam Morgan k5oai@gmail.com wrote: I know we aren't suppose to do the 'me to' kind of posts here and before hundreds of others add theirs and the topic gets canned (again)... as far as I am concerned this is the only remaining 'feature' that ruins an otherwise perfect station combo. perhaps the Flex is worth looking at again if this is never going to be addressed?? On 9/24/2013 9:11 AM, Gary Gregory wrote: Your not alone...:-( On 25 September 2013 00:09, Bob wb4...@gmail.com wrote: So I've been loving my P3 for about 2 years now, and I keep looking at that lonely sensor window in the back, dreaming and wishing Yesterday I received an email from a ham a few thousand miles away asking me to clean up my signal -- I was running JT65 at the time, and he saw my signal decode on his rig in a half-dozen spots across the waterfall. I panicked, of course, and immediately checked everything -- Line Level was four bars steady with an occasional fifth bar flickering, transmit power was 5.0 watts, monitor was sounding perfectly fine, and my handheld receiver was sounding OK too. Later that night a nearby ham was nice enough to run a spectral analysis on my signal and found it looked clean as well. Imagine how easy it would be for me to verify my outbound signal quality if my P3 had an outboard RF sampling tap that communicated via IR back to the P3 and allows the outbound RF to be displayed. One can dream and wish. 73, Bob, WB4SON -- GB 73 K5OAI Sam Morgan __**__**__ Elecraft mailing list Home: http://mailman.qth.net/**mailman/listinfo/elecrafthttp://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.**htmhttp://mailman.qth.net/mmfaq.htm Post: mailto:elecr...@mailman.qth.**net 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] P3 Feature Request - Transmit sampling
Mel, Not a 'glitch'. That is a hardware artifact. The transmit signal you see is going through the 8 MHz IF which is being sampled by the P3. So yes, you see your transmitted signal, but before it gets to the mixer and on-frequency RF stages. It should still be useful for seeing that your audio levels and the modulation is OK, but it will not show you if the final RF output is still OK. If all is working OK in the K3 (RF wise), then that is a good indication, but should the RF stages go non-linear (or other condition) because of some fault, that will not be seen on the P3. 73, Don W3FPR On 9/24/2013 3:49 PM, Mel Farrer wrote: I would like to state a glitch that happens once in a great while on my P3. It will stay on while transmitting and I see my transmitted signal. If it is a glitch, it must be a SW one because the display hardware is doing its job. Then one would suggest it could be toggled on and off What a wonderful thought hint hint. Mel, K6KBE From: Gary Gregory vk1zzg...@gmail.com To: Sam Morgan k5oai@gmail.com Cc: elecraft@mailman.qth.net elecraft@mailman.qth.net Sent: Tuesday, September 24, 2013 8:06 AM Subject: Re: [Elecraft] P3 Feature Request - Transmit sampling Sam, I still believe in the ol saying...the squeeky wheel get's the oil...so it's good to keep our requests up. 73 On 25 September 2013 01:03, Sam Morgan k5oai@gmail.com wrote: I know we aren't suppose to do the 'me to' kind of posts here and before hundreds of others add theirs and the topic gets canned (again)... as far as I am concerned this is the only remaining 'feature' that ruins an otherwise perfect station combo. perhaps the Flex is worth looking at again if this is never going to be addressed?? On 9/24/2013 9:11 AM, Gary Gregory wrote: Your not alone...:-( On 25 September 2013 00:09, Bob wb4...@gmail.com wrote: So I've been loving my P3 for about 2 years now, and I keep looking at that lonely sensor window in the back, dreaming and wishing Yesterday I received an email from a ham a few thousand miles away asking me to clean up my signal -- I was running JT65 at the time, and he saw my signal decode on his rig in a half-dozen spots across the waterfall. I panicked, of course, and immediately checked everything -- Line Level was four bars steady with an occasional fifth bar flickering, transmit power was 5.0 watts, monitor was sounding perfectly fine, and my handheld receiver was sounding OK too. Later that night a nearby ham was nice enough to run a spectral analysis on my signal and found it looked clean as well. Imagine how easy it would be for me to verify my outbound signal quality if my P3 had an outboard RF sampling tap that communicated via IR back to the P3 and allows the outbound RF to be displayed. One can dream and wish. 73, Bob, WB4SON -- GB 73 K5OAI Sam Morgan __**__**__ Elecraft mailing list Home: http://mailman.qth.net/**mailman/listinfo/elecrafthttp://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.**htmhttp://mailman.qth.net/mmfaq.htm Post: mailto:elecr...@mailman.qth.**net 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
