|Year: 1936||Type: Broadcast Receiver - or past WW2 Tuner|
|Valves / Tubes||7: 78 6A7 78 85 42 42 80|
|Principle||Superhet with RF-stage; ZF/IF 460 kHz|
|Wave bands||Broadcast plus 2 Short Wave bands.|
|Power type and voltage||Alternating Current supply (AC) / 115 Volt|
|Loudspeaker||Electro Magnetic Dynamic LS (moving-coil with field excitation coil)|
|Power out||7 W (unknown quality)|
|from Radiomuseum.org||Model: 645K - Philco, Philadelphia Stg. Batt|
|Shape||Console with any shape - in general|
|Notes||The Philco model 645 series (1936) is a follow-on to the 640 series (1935) and uses a 7-tube 3-band chassis with shadow meter (tuning aid). The bands covered are BC, 1.75-5.8 MHz, and 5.75-18 MHz.
There are two individual models with different cabinet styles. Model 645B is a simple rectangular tombstone with rounded upper corners. Model 645K is a floor-type console with a slightly tapered (trapezoidal) profile.
The model 37-640 series (1936-37) is electrically very similar, although the latter series has updated tubes and different band coverage.
|Price in first year of sale||90.00 $|
|Source of data||Philco Radio 1928-1942, Ramirez|
|Circuit diagram reference||Rider's Perpetual, Volume 7 = 1936 and before|
|Literature/Schematics (2)||Pre-War Consoles; Stein, 2000|
Model page created by Thomas Albrecht. See "Data change" for further contributors.
All listed radios etc. from Philco, Philadelphia Stg. Batt. Co.; USA
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