Same thing here with that wee Radio Shack TRF -- a terrific buy it turned out to be. The wife uses it with ease -- her 'little buddy' -- as though it were one of those electric-shaver-sized transistor radios from the early Sixties.
I don't know what model it is, though. IIrc, there were at least two models. I remember reading a DXer article about customizing it for trenchant DX ..... the phrase I recall was 'that laughingly wide tuner indicator'. The front of it says 'Long Range TRF Circuit' twice. It was made in Taiwan, is AM-only, and has a high-low tone *switch* instead of a variable option.
It's also fallen off everything on which it had been perched -- shelves and tables going back over thirty years. The carrying handle is long gone, for example. Yet it keeps on ticking. To today, I've always loved the relatively tight tuning it has.
Lol -- whenever I want to hear a Yankee game on WCBS 880, whose tower is 150 miles away, I'll first tune the TRF to it, and then parallel it on the GE Superadio III. It seems that the latter radio, despite being more sensitive and having far better sonics, has this appalling 910 broadband malignancy that goes from 850 to 950. It's otherwise hard to find WCBS amid that gruesome speed bump.
(The GE Superadio II is garaged for 'serious' DX only, hi)
But the little TRF has none of those 910 hassles ; those '2 times 455 IF' problems. It's * crystal * at that spot. Good little radio. And the Pooch here, despite her verbal disdain for DXing (half in protest, I'm convinced) can take the TRF and become a veritable transistor sister when she wants to find her oldies on it. If it works for her ; it works for me.