the Hallicrafters Co., Chicago
S - 40 B
überarbeitet am 19.10.2010
the hallicrafters co. - I could recognize the lettering in the right
upper corner of set nearly completely hidden behind other transistor portables
in a small second hand electronics shop in St. Gallen. "I have to prevent,
that everybody coming in is fiddling around on this set", the shopkeeper gave
me as an explanation: "anybody really interested will recognize the set even
nearly hidden on the shelves...".
The Hallicrafters S - 40B is a single conversion receiver with an intermediate frequency of 455 kHz, it covers the following bands: 550 - 1600 kHz, 1,7-5,4 MHz, 5,3-16 MHz, 15-44 MHz. The set's analog dial is not linear, i.e. on low frequencies in the mediumwave band, a 2 mm distance covers 10 kHz, so dial accuracy is quite useful. In contrast in the 19 m band, 2 distance of 2 mm an the dial covers around 100 kHz, the dial calibration is almost useless for finding a station on a known frequency.
A bright green backlit semicircular dial covers the left side of the front panel,
it has dial marks for all four band ranges and a fifth 0 - 100 logging scale.
At the right of the main tuning dial, You find the window with a bandspread dial
calibrated with 0 - 100 marks, which You find helpful when You scan a band under
crowded conditions, but it won't be of any help if You want to tune in to a known
station again, it's calibration is shifted, when the main tuning dial is moved.
It's very interesting to have a look in the innards of the recveiver,
You just have to lift the lid of the metal cabinet.
With the more then fifty years old S - 40B, shortwave listening is a bit different then with a contemporary receiver with frequency keypad entry: good knowloedge of the active stations in a shortwave band are very helpful. You can estimate the reception frequency in the 49 m band with an accuracy of 25 kHz, in the 19 m band, it's less then 100 kHz. After a frequency is known from a frequency announcement over the waves, You can find the next 5 or 10 kHz channels lower and higher in the band. Finding out of band frequencies is less challenging, so I could listen to R. Korea on 6480 kHz and IRIB on 9022 kHz without any problems. If You know the station's interval signals well, You might identify a stations as our grandparents did, but nowadays, interval signals are seldom used...
© Martin Boesch