I got the electronics schematic on the american radio Midland 75-440 and there are a two adjustments point called RV555 and it for hipower adjustment and one called Rv561 and its for low power adjustment the midland have 2w output hipower and 0,5w low power
and when i email the swedish agent for Alan they said thet the Hp-446 dont have any adjustment like the 75-440 but even if it had i dont think they woul told me
give me your adress i can mail you the schematics .