Re: [Elecraft] KPA500 / KAT500 and W2 watt meter question
If you use the key-line interrupter, then you must use the phono-plug cables to connect the K3, KPA and KAT. Otherwise PTT will not get to the amplifier. Of course using both without the key line interrupter is very redundant. You just don’t want to use both if an external device is included. 73, Jack, W6FB > On Oct 12, 2023, at 11:35 AM, Andy Durbin wrote: > > SteppIR will accept up to 200 W without damage and opening the amplifier key > line is the standard way protect SteppIR antennas. > > It has been asserted that "NO key line interrupter is needed". However, > Elecraft recognizes that they may be such a need and sells an adapter to > disable keying by AUX cable. The description even mentions including the W2 > is the protection system. > > https://ftp.elecraft.com/KPA/Manuals%20Downloads/E740160%20-%20KPAK3AUX%20Cable%20Set%20Instructions%20Rev%201E.pdf > > Andy, k3wyc > > __ > 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 jackbrin...@me.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] KPA500 / KAT500 and W2 watt meter question
SteppIR will accept up to 200 W without damage and opening the amplifier key line is the standard way protect SteppIR antennas. It has been asserted that "NO key line interrupter is needed". However, Elecraft recognizes that they may be such a need and sells an adapter to disable keying by AUX cable. The description even mentions including the W2 is the protection system. https://ftp.elecraft.com/KPA/Manuals%20Downloads/E740160%20-%20KPAK3AUX%20Cable%20Set%20Instructions%20Rev%201E.pdf Andy, k3wyc __ 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] KPA500 / KAT500 and W2 watt meter question
Key line interrupt would probably not be a good way since the transceiver is still transmitting, but at a lower level. All key line interrupt does is to disable the amplifier. I would think a better way would be to use the K3’s inhibit input signal if you really need no tx power coming out. Note that this has been handled in many, many stations to this point with few (or no) issues. 73, Jack, W6FB > On Oct 12, 2023, at 10:32 AM, Andy Durbin wrote: > > "In the KAT500 manual, page 5, Figure 1 Cabling Diagram, is the better and > safer way to configure the system. NO key line interrupter is needed. > > How does an Elecraft station that controls KPA500 and KAT500 using AUX cables > inhibit keying when a SteppIR antenna is moving the tapes? This protection > must be provided or element tapes and brushes can be damaged. > > Andy, k3wyc > > __ > 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 jackbrin...@me.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] KPA500 / KAT500 and W2 watt meter question
"In the KAT500 manual, page 5, Figure 1 Cabling Diagram, is the better and safer way to configure the system. NO key line interrupter is needed. How does an Elecraft station that controls KPA500 and KAT500 using AUX cables inhibit keying when a SteppIR antenna is moving the tapes? This protection must be provided or element tapes and brushes can be damaged. Andy, k3wyc __ 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] KPA500 / KAT500 and W2 watt meter question
The KAT500 will interrupt the amp properly. Radio key line goes to KAT, then KAT key line goes to KPA. Coax is opposite: Rig to Amp, then Amp to Tuner, then Tuner to Antenna. On 10/10/23 08:17, Glenn Maclean wrote: I just ordered the KPA500/KAT500 combo and W2 watt meter for my K3S. Should I use the key line interrupt connected to the W2 watt meter or should I connect the key line interrupt to the KAT500? Do I even need to use key line interrupt with the K line set up? Thanks in advance Glenn WA7SPY Sent from my iPhone __ 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 n4...@qsl.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 arch...@mail-archive.com
Re: [Elecraft] KPA500 / KAT500 and W2 watt meter question
Glenn; You will want the two Aux cables to connect the K3S to the KAT500, then the KAT500 to the KPA500. The cables are described in the equipment manuals. When the KAT500 is in a tune or finds some error situation, it will negate the key line to the KPA500 until the KAT is able to correct the situation. With this setup, you don’t need the key line interrupter that the W2 provides since the KAT500 is doing it for you. If you need any help, just ask. We hope you really enjoy your KPA500/KAT500 combination! 73, Jack, W6FB > On Oct 10, 2023, at 7:17 AM, Glenn Maclean wrote: > > I just ordered the KPA500/KAT500 combo and W2 watt meter for my K3S. Should I > use the key line interrupt connected to the W2 watt meter or should I connect > the key line interrupt to the KAT500? Do I even need to use key line > interrupt with the K line set up? > Thanks in advance > Glenn WA7SPY > > Sent from my iPhone > __ > 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 jackbrin...@me.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] KPA500 / KAT500 and W2 watt meter question
I don't see the original thread only Bob's reply? I've noticed these broken thread quite frequently...Has anyone else see this? 73 Dean K2WW On Tue, Oct 10, 2023, 11:09 AM Bob McGraw wrote: > Glenn: > > In the KAT500 manual, page 5. Figure 1 Cabling Diagram is the better way > to connect the items. It does not use the key line interrupt. That is > the configuration which I have used, very successfully, for years. > > In the K3S, set the MENU for 20 watts TUNE power, and from the CONFIG > menu PWR SET to Per Band. > > 73 > > Bob, K4TAX > > > > On 10/10/2023 7:18 AM, elecraft-requ...@mailman.qth.net wrote: > > Message: 23 Date: Tue, 10 Oct 2023 05:17:26 -0700 From: Glenn Maclean > > To: elecraft@mailman.qth.net Subject: [Elecraft] > > KPA500 / KAT500 and W2 watt meter question Message-ID: > > <3a0e28e4-8411-4394-a880-0fec58bf3...@att.net> Content-Type: > > text/plain; charset=us-ascii I just ordered the KPA500/KAT500 combo > > and W2 watt meter for my K3S. Should I use the key line interrupt > > connected to the W2 watt meter or should I connect the key line > > interrupt to the KAT500? Do I even need to use key line interrupt with > > the K line set up? Thanks in advance Glenn WA7SPY > __ > 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 dean.k...@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
