KPA1500 ATU Memories
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In my station I have a SteppIR yagi for 20M - 6M, a rotatable Optibeam
dipole for 30M & 40M and a wire dipole for 80m &160M. The SteppIR & Optibeam are both resonant antennas & I use the KPA1500 in ATU Bypass. However I need the ATU for the 80M wire dipole when moving from the CW end to the SSB end of the band or for using the dipole on 160M. A single output coax runs from the amplifier to an auto antenna switch (using BCD codes) at the base of the mast. The KPA1500 does not seem to remember which bands the ATU is in Bypass mode & which bands are in ATU Tune mode. If I forget to change the ATU setting in the heat of a Contest, the amp switches into Standby with the Hard fault condition. Can the KPA1500 ATU be made to remember whether the ATU is in Bypass or In by band or have I just got to be more careful? 73 Ray G3XLG ______________________________________________________________ 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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See "ATU Mode switch" in the KPA1500 Utility "Edit Configuration" dialog and
in KPA1500 Utility Help for the Edit Configuration tab. 73 de Dick, K6KR -----Original Message----- From: [hidden email] <[hidden email]> On Behalf Of Ray Spreadbury via Elecraft Sent: Monday, September 9, 2019 09:23 To: [hidden email] Subject: [Elecraft] KPA1500 ATU Memories In my station I have a SteppIR yagi for 20M - 6M, a rotatable Optibeam dipole for 30M & 40M and a wire dipole for 80m &160M. The SteppIR & Optibeam are both resonant antennas & I use the KPA1500 in ATU Bypass. However I need the ATU for the 80M wire dipole when moving from the CW end to the SSB end of the band or for using the dipole on 160M. A single output coax runs from the amplifier to an auto antenna switch (using BCD codes) at the base of the mast. The KPA1500 does not seem to remember which bands the ATU is in Bypass mode & which bands are in ATU Tune mode. If I forget to change the ATU setting in the heat of a Contest, the amp switches into Standby with the Hard fault condition. Can the KPA1500 ATU be made to remember whether the ATU is in Bypass or In by band or have I just got to be more careful? 73 Ray G3XLG ______________________________________________________________ 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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As Dick pointed out, use the utility program to set which bands to use the tuner and which to bypass. I only use the tuner on 80 and after going up the band and letting the tuner find a solution every 20 kHz it works great.
Dave wo2x Sent from my waxed string and tin cans. > On Sep 9, 2019, at 1:01 PM, Dick Dievendorff <[hidden email]> wrote: > > See "ATU Mode switch" in the KPA1500 Utility "Edit Configuration" dialog and > in KPA1500 Utility Help for the Edit Configuration tab. > > 73 de Dick, K6KR > > > -----Original Message----- > From: [hidden email] <[hidden email]> On > Behalf Of Ray Spreadbury via Elecraft > Sent: Monday, September 9, 2019 09:23 > To: [hidden email] > Subject: [Elecraft] KPA1500 ATU Memories > > In my station I have a SteppIR yagi for 20M - 6M, a rotatable Optibeam > dipole for 30M & 40M and a wire dipole for 80m &160M. The SteppIR & Optibeam > are both resonant antennas & I use the KPA1500 in ATU Bypass. > > However I need the ATU for the 80M wire dipole when moving from the CW end > to the SSB end of the band or for using the dipole on 160M. > > A single output coax runs from the amplifier to an auto antenna switch > (using BCD codes) at the base of the mast. > > The KPA1500 does not seem to remember which bands the ATU is in Bypass mode > & which bands are in ATU Tune mode. > > If I forget to change the ATU setting in the heat of a Contest, the amp > switches into Standby with the Hard fault condition. > > Can the KPA1500 ATU be made to remember whether the ATU is in Bypass or In > by band or have I just got to be more careful? > > 73 Ray G3XLG > > ______________________________________________________________ > 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] 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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