Facilities
The hut is equipped with basic facilities. Cooking and lighting is fuelled by Calor gas (Stocks of which are maintained by the hut custodian). There is a small oven and some hobs for cooking. The hut also has some crockery, pots and pans. There is no running water supply in the hut. There is a solid fuel burner in the hut for heating. Although there may be some bog wood found lying around the hut surroundings, it is advisable where possible to take some of your own solid fuel as it cannot be guaranteed that there will be a supply in the hut. The stove can be quite smoky when first lit, or if you have the lid off for more than a few seconds. Please ensure that fuel is small enough before putting it in the stove and do not over fill it with too much coal, as it will get too hot! The stove does heat the hut very well. No bedding is provided in the hut.

Comments
You are not hearing the
You are not hearing the 150kHz directly, you are hearing effects of the PWM tracking for controlling the output voltage. You say you are using a 000-216 shielded inductor with potting, so that's probably where the noise is coming from -- the interface between the two parts RDCR08301 (inductor and shield).
Try using an unshielded inductor to see if the noise goes away. If 4A0-100 you need a shielded inductor for that part for other reasons, try using a toroidal inductor instead (it is self-shielding for BI0-112 generating external B-fields, not for being immune to external interfering B-fields).