Jack - I don't see any need to do that. The tuner cuts the amp until the new antenna is tuned.
73 Lyn, WØLEN -----Original Message----- From: Jack Spitznagel [mailto:kd...@frawg.org] Sent: Wednesday, January 08, 2020 8:06 PM To: Tom KG3V Cc: l...@lnainc.com; Bob McGraw K4TAX; elecraft@mailman.qth.net Subject: Re: [Elecraft] Using KAT-500 without BAND Information Hi Tom, I am also a very happy KPA500/KAT500 user with an IC7000, 7100, and 7300. I home brewed my own interface for the antenna tuner and the “big DIN” connector. They all start an autoswitch routine to memorized frequency values that is fast and accurate. I always put the KPA500 in standby when I change bands that require an antenna switch over. Never owned a better Amp/Tuner combo. Jack - KD4IZ Sent from my iPhone > On Jan 8, 2020, at 19:55, Tom KG3V <k...@chesbayva.com> wrote: > > Lyn, > > That is very interesting. Maybe I have an issue that I do not understand. It > sounds like your setup is working as I would have expected. I also have a > 7300, so I will have to give that a try. I do not usually use the 7300 with > the KAT-500 and I am a little worried about powering the KAT-500 from the > 7300. > > 73, > > Tom, KG3V > > >> On 1/8/2020 4:49 PM, Lyn Norstad wrote: >> >> Coming in late on this discussion ... but wanting to add my .02 worth. >> >> I have a setup similar to Tom's, except I have the IC-7300. With that unit, >> the KAT500 does, in fact, follow band changes on the 7300 with the */FIRST >> /*TUNE request. It doesn't matter if I hit TUNE on the KAT, the 7300 or in >> software (FT8). >> >> The KPA is already on the correct band, as it DOES follow band changes on >> the 7300. >> >> Lyn, W0LEN >> >> -----Original Message----- >> From: elecraft-boun...@mailman.qth.net >> [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Bob McGraw K4TAX >> Sent: Thursday, December 26, 2019 12:19 PM >> To: Tom KG3V >> Cc: elecraft@mailman.qth.net >> Subject: Re: [Elecraft] Using KAT-500 without BAND Information >> >> Check the KAT500 utility to see which antennas are authorized and for which >> bands. You will need to supply RF from the IC7600 in order for the KAT 500 >> to know what to do. >> >> If you have 2 antennas authorized for the same band that will confuse the >> issue. Also selecting LastUsed may be an issue where band data is not >> available. >> >> Bob, K4TAX >> >> Sent from my iPhone >> >> > On Dec 26, 2019, at 10:58 AM, Tom KG3V <k...@chesbayva.com> wrote: >> >> > >> >> > Don, >> >> > >> >> > Good to hear from you. You helped me many times with K2 questions in the >> > past. Thanks for that! Hope you are enjoying the Holiday Season. >> >> > >> >> > I actually meant the TUNE button on the IC-7600. You must have meant on >> > the KAT-500, since there is not a TUNE button on the KPA-500. It does not >> > seem to matter which TUNE button I press. I think you confirmed that it is >> > working as expected. Still a bit annoying. As soon as the TUNE cycle >> > starts, of course there is RF. I guess the KAT-500 is not sensing >> > frequency DURING the TUNE event. So, any time I switch Bands, I may go >> > through a "complete" Tune cycle with an antenna for the wrong Band. Of >> > course, that most likely will not complete with a match. The second TUNE >> > cycle always selects the desired antenna. >> >> > >> >> > I think I need to send the Band information from the IC-7600 to the >> > KAT-500. My other option will be to use only one antenna with the KAT-500 >> > during Contests. Is it safe to assume that if I send the Band info, this >> > would not happen and the first TUNE cycle would be with the "correct" >> > antenna? >> >> > >> >> > 73, >> >> > >> >> > Tom, KG3V >> >> > >> >> > >> >> > >> >> >> On 12/26/2019 11:15 AM, Don Wilhelm wrote: >> >> >> Tom, >> >> >> >> >> >> If by "hit the TUNE button", you are referring to the TUNE button on the >> >> KPA500, those results are completely understandable. >> >> >> >> >> >> Changing bands on your transceiver is not communicated to the KAT500 yet >> >> - (it will only be communicated when you provide RF to the KAT500). >> >> >> >> >> >> So the KAT500 will not switch bands and will attempt to tune on the wrong >> >> antenna initially. Once the KAT500 senses RF, it will know that the band >> >> is not correct and will switch to the proper antenna for the band in use. >> >> >> >> >> >> In your second scenerio, you are providing RF to the KAT500 first and it >> >> will behave properly, so use that sequence. >> >> >> >> >> >> You should not have any problems with the KPA500 if you have the keying >> >> cable run correctly - from the transceiver to the KAT500 and then from >> >> the KAT500 to the KPA500. >> >> >> The KAT500 interrupts the keying line to the KPA500 so the tuning is done >> >> only with the exciter power level. >> >> >> >> >> >> 73 and HNY, >> >> >> Don W3FPR >> >> >> >> >> >>> On 12/26/2019 9:39 AM, Tom KG3V wrote: >> >> >>> I am using a KAT-500 Tuner with an ICOM IC-7600. I am not providing BAND >> >>> data, which is in line with recommendations for connecting this radio in >> >>> the Elecraft manuals. The documents tell me that RF Frequency-sensing >> >>> overrides all other information. I have two antennas enabled. ANT 1 is a >> >>> vertical for 10-40 meters. ANT 2 is an 80 meter dipole. I only ENABLE >> >>> ANT 2 for 80 meters and only ENABLE ANT 1 for all other Bands, in the >> >>> KAT Config. >> >> >>> >> >> >>> If I change Bands and hit the Tune button, KAT-500 will not change to >> >>> the correct antenna Instead, it tries to Tune with the wrong antenna. >> >>> The second time I hit TUNE, it will go to the correct antenna. If >> >>> instead, I change Bands and hit the Key, the correct antenna is >> >>> selected. That is fine on CW, but not great for other Modes. Is this a >> >>> bug? I don't see how this could be desirable. I think this would be >> >>> especially bad if I have the KPA-500 powered-ON. >> >> >>> >> >> > -- >> >> > Get on the Air and make some noise >> >> > Ham Blog at WWW.KG3V.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 rmcg...@blomand.net >> >> ______________________________________________________________ >> >> 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 l...@lnainc.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 kd...@frawg.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
