There are two sources of the reported SWR inaccuracies: - An SWR calculation scalar that I'll be adjusting in firmware; this is what's causing a 2:1 SWR to read closer to 1.8:1 on some K3s.
- The KAT3 itself, and to a much lesser degree, the KANT3, which is present if the ATU is not installed. Both modules have inherent stray reactance, part of which is due to the 8.2 MHz first-IF trap. These strays slightly alter the impedance seen by the K3's SWR bridge. Even when the scalar correction is applied, there will still be a small frequency-dependent variation in SWR reading between the K3's bridge and an external instrument. This has no impact on K3 operation. 73, Wayne N6KR ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
