Nice job and not a model I've ever seen, I think I first heard of Pennine through adverts in some old copies of the Trader. Interesting about Frederick Waterhouse, I have - or did it leave? - a very small extension speaker produced by them, in red wrinkle finished metal case. Had always tended to guess that they'd bought in the drive unit, but perhaps not so.
I'll admit I didn't noticeably bat an eyelid at the thought of a 100 kc/s intermediate frequency, as something in the 110-130 kc/s range was very widely employed until 1935 when SW became a usual feature in domestic radios. I can't think of any instances of its post-war use, but smaller companies were quite often a law unto themselves (especially Yorkshire ones? Ambassador with their various odd circuit features, Pegasus marketing sets with dials calibrated only in kc/s in the middle 1930s...) and its resurrection for what I take to be a MW/LW only chassis didn't seem impossible.
Paul
I'll admit I didn't noticeably bat an eyelid at the thought of a 100 kc/s intermediate frequency, as something in the 110-130 kc/s range was very widely employed until 1935 when SW became a usual feature in domestic radios. I can't think of any instances of its post-war use, but smaller companies were quite often a law unto themselves (especially Yorkshire ones? Ambassador with their various odd circuit features, Pegasus marketing sets with dials calibrated only in kc/s in the middle 1930s...) and its resurrection for what I take to be a MW/LW only chassis didn't seem impossible.
Paul
