thank you
the band switches are 23 pcs. with 6 steps, driven in 2 lines by the geartrain from the knob. Addittional one pc. outside from the tuner chassis for the 12 little bulbs (6 steps x one left and one right) in the front. The most of the switches are to swapp filter coils, and related to the band the frequency of the IF1 and the second oscillator. picture Telefunken-10: this is a germanium diode ring mixer OA154Q. The tuning knob is pushed a coarse and pull a fine tuning by gear ratio. The radio have a crystal based calibrating oscillator with harmonic of 25kc for low bands, 200kc for high bands.
The oldie is a great performer in DX, also it can receive the Grimeton SAQ directly. Ideal combination with a shortwave boatanchor to have the complete AM bands. The shortwave brother from Telefunken is the E104, I dont have one, but EK07 (see
https://www.eevblog.com/forum/rf-microwave/140-lbs-of-radio-(restoration)/ ) from Rohde+Schwarz will do the job also perfect.
I have seen on a very old picture 3 of this E108 working in the german weather headquarter, there was plates with citiy names on the radios like NY, Moskau, ....
The frequency drift of the 1. oscillator is (by manual) <26Hz / 1hour, in the test with a rubidium locked counter it was below 20Hz, a warm up of a half hour is required to get that. It is full equipped with SQ tubes of long life time. There are no electrolytics, all is build with large metal paper Cs instead of them.
E108Lw4 is part 2 of my project "vintage boatanchor radio tower". The next restoration is the greatful field strenght measuring receiver HFH from Rohde+Schwarz. following a second EK07. then I will stack them on a cart with rolls.
greetings
Martin