[Elecraft] KPA1500 with K4 tracks VFOs with 1 kHz resolution

[Wayne Burdick]

Andy (K3WYC) wrote:

> I still don't see the advantage of AUX bus giving the KPA1500 the TX frequency to 1 kHz resolution.   What am I missing?


Hi Andy,

The improved resolution ensures that the correct bin is detected when you get within +/- 1 kHz of the target ATU LC data bin rather than +/- 8 kHz. This improves repeatability of selected LC values vs. VFO frequency, especially on 160 and 80 meters where it's most likely to matter.

This also means that, in the future, we could use smaller bin width on some bands if desired. This could be helpful if you were using the ATU to fine-tune a very narrowband antenna such as a loop or electrically short vertical.

73,
Wayne
N6KR