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".