K3 band data query
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I operate a vertical antenna for 80 & 160M where the bandwidth is such that I need to switch in reactance between the phone and CW portions of each band. I currently do this manually, but am installing vacuum relays for switching remotely. Is there a way the K3, through the data port or whatever, can send a signal when migrating between traditional (or operator defined) phone and CW portions of the band?
Antenna matched points on 160 are at 1825 and 1855; 80M are 3520 and 3800. I had considered sensing the K3 mode, but that’s not an acceptable solution. The 160M CW contests can often extend into the traditional phone area and FT8/WSPR often use USB mode in the CW portion. Thoughts? Dennis, K7FL Las Vegas, NV ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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Dennis,
Frequency data is available from the RS-232 data, but needs decoding which implies that a smart device is needed (computer). See the K3 Programmer's Reference Manual for the commands and responses. 73, Don W3FPR On 10/18/2020 2:28 PM, Dennis Ashworth wrote: > I operate a vertical antenna for 80 & 160M where the bandwidth is such that I need to switch in reactance between the phone and CW portions of each band. I currently do this manually, but am installing vacuum relays for switching remotely. Is there a way the K3, through the data port or whatever, can send a signal when migrating between traditional (or operator defined) phone and CW portions of the band? > > Antenna matched points on 160 are at 1825 and 1855; 80M are 3520 and 3800. > > I had considered sensing the K3 mode, but that’s not an acceptable solution. The 160M CW contests can often extend into the traditional phone area and FT8/WSPR often use USB mode in the CW portion. > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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In reply to this post by Dennis Ashworth-2
This is easy to do with an Arduino if you are capable with those kind of things. The serial port on the Arduino can read the data from the K3, and set/clear a relay at any frequency you want. Some assembly required. :^)
Ken K6MR From: Dennis Ashworth<mailto:[hidden email]> Sent: Sunday, October 18, 2020 11:30 To: [hidden email]<mailto:[hidden email]> Subject: [Elecraft] K3 band data query I operate a vertical antenna for 80 & 160M where the bandwidth is such that I need to switch in reactance between the phone and CW portions of each band. I currently do this manually, but am installing vacuum relays for switching remotely. Is there a way the K3, through the data port or whatever, can send a signal when migrating between traditional (or operator defined) phone and CW portions of the band? Antenna matched points on 160 are at 1825 and 1855; 80M are 3520 and 3800. I had considered sensing the K3 mode, but that’s not an acceptable solution. The 160M CW contests can often extend into the traditional phone area and FT8/WSPR often use USB mode in the CW portion. Thoughts? Dennis, K7FL Las Vegas, NV ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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> Some assembly required. :^) microHAM Station Master (band decoder) has programmable "band edges" and can generate separate controls for any arbitrary frequency segment: <http://microham-usa.com/store/product-info.php?pid12.html>. No assembly required <G>. 73, ... Joe, W4TV On 2020-10-18 4:21 PM, Ken K6MR wrote: > This is easy to do with an Arduino if you are capable with those kind of things. The serial port on the Arduino can read the data from the K3, and set/clear a relay at any frequency you want. Some assembly required. :^) > > Ken K6MR > > From: Dennis Ashworth<mailto:[hidden email]> > Sent: Sunday, October 18, 2020 11:30 > To: [hidden email]<mailto:[hidden email]> > Subject: [Elecraft] K3 band data query > > I operate a vertical antenna for 80 & 160M where the bandwidth is such that I need to switch in reactance between the phone and CW portions of each band. I currently do this manually, but am installing vacuum relays for switching remotely. Is there a way the K3, through the data port or whatever, can send a signal when migrating between traditional (or operator defined) phone and CW portions of the band? > > Antenna matched points on 160 are at 1825 and 1855; 80M are 3520 and 3800. > > I had considered sensing the K3 mode, but that’s not an acceptable solution. The 160M CW contests can often extend into the traditional phone area and FT8/WSPR often use USB mode in the CW portion. > > Thoughts? > > Dennis, K7FL > Las Vegas, NV ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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In reply to this post by k6mrmagnet
Wait a minute. The Arduino is usually programmed in C, not
Assembly. :-) 73 Bill AE6JV On 10/18/20 at 4:21 PM, [hidden email] (Ken K6MR) wrote: >This is easy to do with an Arduino if you are capable with >those kind of things. The serial port on the Arduino can read >the data from the K3, and set/clear a relay at any frequency >you want. Some assembly required. :^) ----------------------------------------------------------------------- Bill Frantz | There's nothing so clear | Periwinkle (408)348-7900 | as a design you haven't | 150 Rivermead Rd #235 www.pwpconsult.com | written down. - Dean Tribble| Peterborough, NH 03458 ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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In reply to this post by Dennis Ashworth-2
Dennis,
The K3's BCD outputs are defined by band, not frequency. You need something that tracks QRG, but the following may be serious overkill for your needs... If you use the general purpose logger DXLabs, or the contest logger N1MM, consider a freeware Band Decoder called FreqEZ. The program receives frequency info from those loggers and allows you to to define 255 band segments that control any combination of 16 remote relay lines. The software is free, but the hardware components are not. The FreqEZ website describes a DIY solution or an Assembled and Tested solution. (DISCLAIMER: I wrote the free software, but I also sell the Assembled and Tested hardware) www.freqez.info If you only need a few outputs, you could probably cobble together something that uses the free software but is simpler and cheaper. Contact me if you're interested. -larry (K8UT) ------ Original Message ------ From: "Dennis Ashworth" <[hidden email]> To: [hidden email] Sent: 2020-10-18 2:28:42 PM Subject: [Elecraft] K3 band data query >I operate a vertical antenna for 80 & 160M where the bandwidth is such that I need to switch in reactance between the phone and CW portions of each band. I currently do this manually, but am installing vacuum relays for switching remotely. Is there a way the K3, through the data port or whatever, can send a signal when migrating between traditional (or operator defined) phone and CW portions of the band? > >Antenna matched points on 160 are at 1825 and 1855; 80M are 3520 and 3800. > >I had considered sensing the K3 mode, but that’s not an acceptable solution. The 160M CW contests can often extend into the traditional phone area and FT8/WSPR often use USB mode in the CW portion. > >Thoughts? > >Dennis, K7FL >Las Vegas, NV >______________________________________________________________ >Elecraft mailing list >Home: http://mailman.qth.net/mailman/listinfo/elecraft >Help: http://mailman.qth.net/mmfaq.htm >Post: mailto:[hidden email] > >This list hosted by: http://www.qsl.net >Please help support this email list: http://www.qsl.net/donate.html >Message delivered to [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] |
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