Model
Two Tube SW


     C1 140 pF. variable, BANDSET, Hammarlund MC-140-M
     C2 35 pF. variable, BANDSPREAD, Hammarlund MC-35-S
     C3 100 pF. / 400 v. mica, Sangamo
     C4 35 pF. variable, ANT. COMP., Hammarlund HF-35
     C5 250 pF. / 400 v. mica, Cornell-Dublier
     C6 0.1 uF. / 600 v. paper, Aerovox
     R1 3 Meg ohms, 1/2 w. carbon, Lynch
     R2 10 ohm rheostat, FIL ADJ, Amsco
     R3 50 K ohms, var., REGEN, IRC
     R4 200 K ohms, 1/2 w. carbon, IRC
     RFC 2.5 uH. choke, National
     T1 10:1 audio transformer, Rauland R-13, "All-American"
     V1 #30 triode, DETECTOR, Raytheon
     V2 #30 triode, AUDIO AMPLIFIER, Raytheon
     PHONES High impedance 3K ohms, Brandes "Superior Matched Tone"
     L1 |
     L2 | See Coil Chart below
     L3 |


    Coil   Freq. Coverage       L1 turns  L2 turns  L3 turns
      1    650 kHz - 1450 kHz   100        20        10
      2    1200 kHz - 2.5 mHz    50        20        10
      3    2.0 mHz - 4.2 mHz     20        10         7
      4    3.8 mHz - 8.0 mHz     11         5         7
      5    8.0 mHz - 15.5 mH      4-1/2     5         5
 
 

All coils are wound in the same direction using #30 AWG enameled wire, close-wound. There is 1/16" spacing between
coils. For each coil, L1 (grid) is the top winding, L2 (tickler) the middle and L3 (antenna) is the bottom. Hammarlund
XP-53, 5-pin type forms are used which are ribbed, but have an effective diameter of 1-1/2".