Hi James: That's a very, very old and outdated draft. In those earlier drafts we simply used rough version of the block diagram as a "filler" illustration. In most, the ATU does not even appear.
I don't have any control over which drafts are passed around. You might check with whoever sent you that version for the latest, dated October 16. 73, Ron AC7AC -----Original Message----- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of James Wilson Sent: Thursday, November 2, 2017 1:45 PM To: Elecraft Subject: [Elecraft] KPA1500 with P3 Transmit Monitor Ron D'Eau Claire wrote: I presume that by "draft" you are looking at a prelim copy of the KPA1500 Owner's manual. --------------------------- Yes, Ron. KAP1500 Owner's Manual Revision A1 (Draft) dated August 9, 2017. To further simplify its block diagram the signal path is like this: TRANSCEIVER (external) --> AMPLIFIER --> INTERNAL SWR BRIDGE --> ATU --> ANTENNA SYSTEM (external) The SWR briege in the KPA1500 will report the SWR the amplifier "sees" going into the ATU. As you know, the point of the ATU is to ensure the amplifier itself is feeding a 52 ohm non-reactive load which is expressed as an SWR in the link between the amp and the ATU. ______________________________________________________________ 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 r...@elecraft.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
