Contrary to our earlier plan we decided to move on to Denham today. This was partly due to our finding a potential issue with our HF radio, but more on that later.
We are currently anchored at 25 56.0s 113 34.4e in 2.6m (reduced to datum) over weedy sand. We are about a cable (~200m) N of the first port channel marker which marks the outer end of the dredged channel into Denham. It is flat calm. Here is our track from Meade Island...
|Zen Again track|
|Zen Again track detail shown on WA DoT charts in Memory-Map|
We had to motor through the flats north of Cape Heiresson (on the right above) since wind was then 2-4 knots ESE and we couldn't keep the boat moving.
|Approaching first flats|
|Denham outer port mark|
Then we did some HF radio tests to try to figure out why we are not being heard when using the radio for voice transmissions. We have a radio frequency power meter which clamps around the antenna feed, directly measuring transmitted power. It showed that our antenna tuner needs a lot of signal to trigger its tuning process. So if my voice isn't _very_ loud the antenna isn't tuned, so the poor signal strength is further degraded by poor tuning.
The solution we came up with was to enlist our recorder (the music instrument kind). It easily generates a tone which triggers the tuner. This solves our problem! The tuner should not need such a high level signal but at least we have a work-around for the issue. Transmitting DSC messages or other digital formats (eg to send/receive email over HF) isn't a problem since they easily trigger the antenna tuner.
Tomorrow we plan to explore Denham. We're told there may be a shower we can use.