A second measurement at a known mismatch settled both the index and the scale.
At SWR 1.1: RM6=0. At SWR 1.5: RM6=52, while RM4 kept tracking the power.
52/255 = 0.204, which is the reflection coefficient of a 1.5 SWR to three
decimals. So the raw value is rho scaled to 255, and the ratio is
(1+rho)/(1-rho) — physics, not a curve fitted through two points, which is why
2.0 and 3.0 fall out of it correctly without ever having been measured.
The panel now shows that ratio, the number the operator reads on the rig, rather
than a percentage of meter travel — and a dash while receiving, since a stale SWR
from the last transmission reads as a live one.
Both measurements are recorded in the code and in a test, so the mapping is
evidence rather than a table borrowed from another model — which is exactly how
it came to read 81 in the first place.
Reported on the FTDX10: listening on 14.244 with VFO B still holding 18.115 from
an earlier session, pressing SPLIT threw the transmitter onto another band. The
button only flipped the rig's split flag, and the other VFO is stale by nature —
the only transmit frequency that makes sense is one derived from where the
operator is listening NOW. SPLIT therefore places the TX VFO too: up 1 kHz on CW
and the data modes, up 5 kHz on phone, the offsets operators actually call. The
+1k / +5k buttons remain for anything else, and a test pins the mapping.
The panel also drew its own flat meters while the Flex and Icom consoles use the
shared LED-segment MeterBar. Two instrument styles in one application is just
inconsistency — it now uses the shared component, and the local one is gone.
And the three consoles are named alike: "Flex Console", "Icom Console", "Yaesu
Console", in the tabs and in the Main-view pane list, in both languages.
rouggy